# Patent

## Title
Multiple catalyst and reactor system for olefin polymerization and polymers produced therefrom

## Abstract

Disclosed is a process for producing branched polymers including at least 50 mol % C3–C40 olefins. The process may include: (1) feeding a first catalyst, an activator, and one or more C2–C40 olefins into a first reaction zone at a temperature of greater than 70° C. and a residence time of 120 minutes or less to produce a product; (2) feeding the product a second catalyst, and an activator into a second reaction zone at a temperature of greater than 70° C., and a residence time of 120 minutes or less. One of the catalysts should be chosen to produce a polymer having a weight average molecular weight of 100,000 or less and a crystallinity of 20% or less. The other catalyst should be chosen to producing a polymer having a weight average molecular weight of 100,000 or less and a crystallinity of 20% or more.

## Background
RELATED CASE INFORMATION
This application is a continuation-in-part of U.S. Ser. No. 10/686,951, filed Oct. 15, 2003 which claims priority from U.S. Ser. No. 60/418,482, filed Oct. 15, 2002 and U.S. Ser. No. 60/460,714, filed Apr. 4, 2003. This application is also a continuation-in-part of U.S. Ser. No. 10/687,508, filed Oct. 15, 2003 which claims priority from U.S. Ser. No. 60/418,482, filed Oct. 15, 2002 and U.S. Ser. No. 60/460,714, filed Apr. 4, 2003.
This application is related to: 1) U.S. Ser. No. 60/199,093 filed on Apr. 21, 2000, 2) U.S. Ser. No. 60/171,715 filed Dec. 21, 1999, 3) U.S. Ser. No. 09/745,394 filed Dec. 21, 2000, 4) U.S. Ser. No. 09/746,332 filed Dec. 21, 2000, and 5) WO 01/81493.


FIELD OF THE INVENTION
This invention relates to a process to polymerize olefins using multiple catalysts and multiple reactors and polymers produced therefrom. In particular this invention relates to a process to produce polyolefin adhesives and the adhesives so produced.
BACKGROUND OF THE INVENTION
For some applications such as adhesives individual polymers do not possess the necessary combination of properties. Individual polyolefins having certain characteristics are often blended together in the hope of combining the positive attributes of the individual components. Typically the result is a blend which displays an average of the individual properties of the individual resins. For example EP 0 527 589 discloses blends of flexible, low molecular weight amorphous polypropylene with higher molecular weight isotactic polypropylene to obtain compositions with balanced mechanical strength and flexibility. These compositions show better flexibility compared to that of the isotactic polypropylene alone, but are still lacking in other physical attributes. Physical blends also have the problems of inadequate miscibility. Unless the components are selected for their compatibility they can phase separate or smaller components can migrate to the surface. Reactor blends, also called intimate blends (a composition comprising two or more polymers made in the same reactor or in a series of reactors) are often used to address these issues, however finding catalyst systems that will operate under the same environments to produce different polymers has been a challenge.
Multiple catalyst systems have been used in the past to produce reactor blends (also called intimate blends) of various polymers and other polymer compositions. Reactor blends and other one-pot polymer compositions are often regarded as superior to physical blends of similar polymers. For example U.S. Pat. No. 6,248,832 discloses a polymer composition produced in the presence of one or more stereospecific metallocene catalyst systems and at least one non-stereospecific metallocene catalyst system. The resultant polymer has advantageous properties over the physical blends disclosed in EP 0 527 589 and U.S. Pat. No. 5,539,056.
Thus there has been interest in the art in developing multiple catalyst systems to produce new polymer compositions. For example, U.S. Pat. No. 5,516,848 discloses the use of two different cyclopentadienyl based transition metal compounds activated with alumoxane or non-coordinating anions. In particular, the examples disclose, among other things, catalyst compounds in combination, such as (Me2Si(Me4C5)(N-c-C12H23)TiCl2 and rac-Me2Si(H4Ind)ZrCl2, or Me2Si(Me4C5)(N-c-C12H23)TiCl2 and Me2Si(Ind2)HfMe2, (Ind=indenyl) activated with activators such as methylalumoxane or N,N-dimethyl anilinium tetrakis(pentafluorphenyl) borate to produce polypropylenes having bimodal molecular weight distributions (Mw/Mn), varying amounts of isotacticity (from 12 to 52 weight % isotactic PP in the product in Ex 2, 3 and 4), and having weight average molecular weights over 100,000, and some even as high as 1,200,000 for use as thermoplastics. Likewise, U.S. Pat. No. 6,184,327 discloses a thermoplastic elastomer comprising a branched olefin polymer having crystalline sidechains and an amorphous backbone wherein at least 90 mole percent of the sidechains are isotactic or syndiotactic polypropylene and at least 80 mole percent of the backbone is atactic polypropylene produced by a process comprising: a) contacting, in solution, at a temperature from about 90° C. to about 120° C., propylene monomers with a catalyst composition comprising a chiral, stereorigid transition metal catalyst compound capable of producing isotactic or syndiotactic polypropylene; b) copolymerizing the product of a) with propylene and, optionally, one or more copolymerizable monomers, in a polymerization reactor using an achiral transition metal catalyst capable of producing atactic polypropylene; and c) recovering a branched olefin polymer. Similarly U.S. Pat. No. 6,147,180 discloses the synthesis of a thermoplastic polymer composition, which is produced by first polymerizing monomers to produce at least 40% vinyl terminated macromonomers and then copolymerizing the macromonomers with ethylene. In addition U.S. Pat. No. 6,323,284 discloses a method to produce thermoplastic compositions (mixtures of crystalline and amorphous polyolefin copolymers) by copolymerizing alpha-olefins and alpha, omega dienes using two separate catalyst systems.
Likewise others have experimented with multiple stage processes to produce new polymer compositions. For example EP 0 366 411 discloses a graft polymer having an EPDM backbone with polypropylene grafted thereto at one or more of the diene monomer sites through, the use of a two-step process using a different Ziegler-Natta catalyst system in each step. This graft polymer is stated to be useful for improving the impact properties in blended polypropylene compositions.
Although each of the polymers described in the above references has interesting combinations of properties, there remains a need for new composition that offer other new and different property balances tailored for a variety of end uses. In particular, it would be desirable to find a composition that is strong yet has adhesive characteristics and the ability to be applied using adhesive technology and equipment.
For general information in this area, one may refer to:
1. DeSouza and Casagrande, in 2001 addressed the issue of binary catalyst systems in “Recent Advances in Olefin Polymerization Using Binary Catalyst Systems, Macromol. Rapid Commun. 2001, 22, No. 16 (pages 1293 to 1301). At page 1299 they report propylene systems that produce a “gooey” product.
2. Studies with respect to the production of stereoblock polypropylene by using in-situ mixtures of metallocene catalysts with different stereoselectivity were recently performed by Lieber and Brintzinger in “Propene Polymerization with Catalyst Mixtures Containing Different Ansa-Zirconocenes: Chain Transfer to Alkylaluminum Cocatalysts and Formation of Stereoblock Polymers”, Macromolecules 2000, 33, No. 25 (pages 9192–9199). Propylene polymerization reactions were performed using metallocene catalysts H4C2(Flu)2ZrCl2, rac-Me2Si(2-Me-4-tBu-C5H2)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 in the presence of either MAO (methylalumoxane) or triisobutylaluminium (AliBu3)/triphenylcarbenium tetrakis(perfluorophenylborate) (trityl borate) as the cocatalyst. Propylene polymerization using the mixed catalysts, H4C2(Flu)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 in the presence of either MAO or AliBu3/trityl borate produced waxy solids, which are completely separable into an atactic (diethyl ether-soluble) and an isotactic (insoluble) fraction. Neither fraction contained any combination of isotactic and atactic pentad patterns indicating that these catalyst mixtures did not form stereoblock polymers.
3. Aggarwal addressed the various polymers produced in “Structures and Properties of Block Polymers and Multiphase Polymer Systems: An Overview of Present Status and Future Potential”, S. L. Aggarwal, Sixth Biennial Manchester Polymer Symposium (UMIST Manchester, March 1976)
4. “Selectivity in Propene Polymerization with Metallocene Catalysts” Resconi, et al, Chem Rev. 2000, 100, 1253–1345.
None of the references above has directly addressed the need for polyolefin based adhesives containing both amorphous and crystalline components. Such adhesives are desired in the industry as a replacement for blends requiring significant amount of hydrocarbon resin tackifiers.
Additional references that are of interest include:
1) EP Patents: EP 0 619 325 B1, and EP 719 802 B1;
2) U.S. patents/Publications: U.S. Pat. Nos. 6,207,606, 6,258,903, 6,271,323, 6,340,703, 6,297,301, US 2001/0007896 A1, U.S. Pat. Nos. 6,184,327, 6,225,432, 6,342,574, 6,147,180, 6,114,457, 6,143,846, 5,998,547, 5,696,045; 5,350,817, and 6,659,965.
3) PCT Publications: WO 00/37514, WO 01/81493, WO 98/49229, WO 98/32784; and WO 01/09200
4) “Metallocene-Based Branch-Block thermoplastic Elastomers,” Markel, et al. Macromolecules 2000, Volume 33, No. 23. pgs 8541–8548.
SUMMARY OF THE INVENTION
This invention relates to a continuous process to produce a branched olefin polymer comprising:
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 20% or less under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more, (preferably 40% or more) at the selected polymerization conditions;
3) contacting a catalyst component, one or more activators and one or more C2 to C40 olefins in a first reaction zone, at a temperature of greater than 70° C., and at a residence time of 120 minutes or less; and
4) transfering the contents of the first reaction zone to a second reaction zone and further contacting the contents with a catalyst component, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C., and at a residence time of 120 minutes or less; and
5) optionally, transferring the contents of the second reaction zone to a third reaction zone and further contacting the contents with a catalyst compound, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C., and at a residence time of 120 minutes or less; and
6) recovering a branched olefin polymer comprising at least 50 mole % of one or more C3 to C40 olefins,
where the first catalyst component is present in at least one reaction zone and the second catalyst component is present in a second reaction zone and where in at least one reaction zone the C2 to C40 olefin is a C3 to C40 alpha-olefin.


DETAILED DESCRIPTION
For the purposes of this invention and the claims thereto and for ease of reference when a polymer is referred to as comprising an olefin, the olefin present in the polymer is the polymerized form of the olefin.
In another embodiment this invention relates to a polymer comprising one or more C3 to C40 olefins, preferably propylene, and less than 50 mole % of ethylene, having:
a) a Dot T-Peel between 1 Newton and the 10,000 Newtons; and
b) a Mz/Mn of 2 to 200; and/or
c) an Mw of X and a g′ of Y (measured at the Mz of the polymer) according to the following Table C:








TABLE C





X (Mw)
Y (g′)







100,000 or less, preferably 80,000 or less, preferably 70,000 or less, more
0.9 or less,


preferably 60,000 or less, more preferably 50,000 or less, more preferably
preferably


40,000 or less, more preferably 30,000 or less, more preferably 20,000 or less,
0.7 or less


more preferably 10,000 or less. In some embodiments X is also at least 1000,
Preferably


preferably at least 2000, more preferably at least 3000, more preferably at least
between


4000, more preferably at least 5000, more preferably at least 7000, more
0.3–0.9


preferably 10,000, more preferably at least 15,000.


75,000 or less, preferably 70,000 or less, more preferably 60,000 or less, more
0.92 or less,


preferably 50,000 or less, more preferably 40,000 or less, more preferably
preferably,


30,000 or less, more preferably 20,000 or less, more preferably 10,000 or less.
0.6 or less


In some embodiments A is also at least 1000, preferably at least 2000, more
preferably


preferably at least 3000, more preferably at least 4000, more preferably at least
between


5000, more preferably at least 7000, more preferably 10,000, more preferably at
0.4–0.6-


least 15,000.


50,000 or less, more preferably 40,000 or less, more preferably 30,000 or less,
0.95 or less,


more preferably 20,000 or less, more preferably 10,000 or less. In some
preferably


embodiments A is also at least 1000, preferably at least 2000, more preferably
0.7 or less


at least 3000, more preferably at least 4000, more preferably at least 5000,
preferably


more preferably at least 7000, more preferably 10,000, more preferably at least
between


15,000.
0.5–0.7-


30,000 or less, preferably 25,000 or less, more preferably 20,000 or less, more
0.98 or less


preferably 15,000 or less, more preferably 10,000 or less. In some
preferably


embodiments A is also at least 1000, preferably at least 2000, more preferably
between


at least 3000, more preferably at least 4000, more preferably at least 5000,
0.7–0.98


more preferably at least 7000, more preferably 10,000, more preferably at least


15,000.









In a some embodiments the g′ is 0.9 or less, 0.8 or less, 0.7 or less, 0.6 or less, 0.5 or less, 0.4 or less, 0.3 or less measured at the Mz of the polymer.
In another embodiment the polymer described above also has a peak melting point (Tm) between 40 and 250° C., or between 60 and 190° C., or between about 60 and 150° C., or between 80 and 130° C. In some embodiments the peak melting point is between 60 and 160° C. In other embodiments the peak melting point is between 124–140° C. In other embodiments the peak melting temperature is between 40–130° C.
In another embodiment the polymer described above also has a viscosity of 90,000 mPa·sec or less at 190° C. (as measured by ASTM D 3236 at 190° C.); or 80,000 or less, or 70,000 or less, or 60,000 or less, or 50,000 or less, or 40,000 or less, or 30,000 or less, or 20,000 or less, or 10,000 or less, or 8,000 or less, or 5000 or less, or 4000 or less, or 3000 or less, or 1500 or less, or between 250 and 6000 mPa·sec, or between 500 and 5500 mPa·sec, or between 500 and 3000 mPa·sec, or between 500 and 1500 mPa·sec, and/or a viscosity of 8000 mPa·sec or less at 160° C. (as measured by ASTM D 3236 at 160° C.); or 7000 or less, or 6000 or less, or 5000 or less, or 4000 or less, or 3000 or less, or 1500 or less, or between 250 and 6000 mPa·sec, or between 500 and 5500 mPa·sec, or between 500 and 3000 mPa·sec, or between 500 and 1500 mPa·sec. In other embodiments the viscosity is 200,000 mPa·sec or less at 190° C., depending on the application. In other embodiments the viscosity is 50,000 mPa·sec or less depending on the applications.
In another embodiment the polymer described above also has a heat of fusion of 70 J/g or less, or 60 J/g or less, or 50 J/g or less; or 40 J/g or less, or 30 J/g or less, or 20 J/g or less and greater than zero, or greater than 1 J/g, or greater than 10 J/g, or between 20 and 50 J/g.
In another embodiment the polymer described above also has a Shore A Hardness (as measured by ASTM 2240) of 95 or less, 70 or less, or 60 or less, or 50 or less, or 40 or less or 30 or less, or 20 or less. In other embodiments the Shore A Hardness is 5 or more, 10 or more, or 15 or more. In certain applications, such as packaging, the Shore A Hardness is preferably 60–70.
In another embodiment the polymer of this invention has an Mz/Mn of 2 to 200, preferably 2 to 150, preferably 10 to 100.
In another embodiment the polymer described above also has a Shear Adhesion Fail Temperature (SAFT—as measured by ASTM 4498) of 200° C. or less, or of 40 to 150° C., or 60 to 130° C., or 65 to 110° C., or 70–80° C. In certain embodiments SAFT's of 130–140° C. are preferred.
In another embodiment the polymer described above also has a Dot T-Peel of between 1 Newton and 10,000 Newtons, or 3 and 4000 Newtons, or between 5 and 3000 Newtons, or between 10 and 2000 Newtons, or between 15 and 1000 Newtons. Dot T-Peel is determined according to ASTM D 1876, except that the specimen is produced by combining two 1 inch by 3 inch (2.54 cm×7.62 cm) Kraft paper substrate cut outs with a dot of adhesive with a volume that, when compressed under a 500 gram weight occupies about 1 square inch of area (1 inch=2.54 cm). Once made all the specimens are pulled apart in side by side testing (at a rate of 2 inches per minute) by a machine that records the destructive force of the insult being applied. The maximum force achieved for each sample tested was recorded and averaged, thus producing the Average Maximum Force which is reported as the Dot T-Peel.
In another embodiment the polymer described above also has a set time of several days to 1 second, or 60 seconds or less, or 30 seconds or less, or 20 seconds or less, or 15 seconds or less, or 10 seconds or less, or 5 seconds or less, or 4 seconds or less, or 3 seconds or less, more or 2 seconds or less, or 1 second or less.
In another embodiment the polymer described above also has an Mw/Mn of 2 to 75, or 4 to 60, or 5 to 50, or 6 to 20.
In another embodiment the polymer described above also has an Mz of 500,000 or less, preferably 15,000 to 500,000, or 20,000 to 400,000, or 25,000 to 350,000.
In another embodiment the polymer described above may also have a strain at break (as measured by ASTM D-1708 at 25° C.) of 50 to 1000%, preferably 80 to 200%. In some other embodiments the strain at break is 100 to 500%.
In another embodiment, the polymer described herein has a tensile strength at break (as measured by ASTM D-1708 at 25° C.) of 0.5 MPa or more, alternatively 0.75 MPa or more, alternatively 1.0 MPa or more, alternatively 1.5 MPa or more, alternatively 2.0 MPa or more, alternatively 2.5 MPa or more, alternatively 3.0 MPa or more, alternatively 3.5 MPa or more.
In another embodiment the polymer described above also has a crystallization point (Tc) between 20 and 110° C. In some embodiments the Tc is between 70 to 100° C. In other embodiments the Tc is between 30 to 80° C. In other embodiments the Tc is between 20 to 50° C.
In some embodiment the polymers described above has a slope of −0.1 or less, preferably −0.15 or less, more preferably −0.25 or less in the trace of complex viscosity versus temperature as shown in FIG. 1 (as measured by ARES dynamic mechanical spectrometer operating at a frequency of 10 rad/s, with a strain of 20% under a nitrogen atmosphere, and a cooling rate of 10° C./min) over the range of temperatures from Tc+10° C. to Tc+40° C. The slope is defined as a derivative of log (complex viscosity) with respect to temperature.
In another embodiment the polymer described above has a Tc that is at least 10° C. below the Tm, preferably at least 20° C. below the Tm, preferably at least 30° C. below the Tm, more preferably at least 35° C. below the Tm.
In another embodiment some polymers described above have a melt index ratio (I10/I2) of 6.5 or less, preferably 6.0 or less, preferably 5.5 or less, preferably 5.0 or less, preferably 4.5 or less, preferably between 1 and 6.0. (I10 and I2 are measured according to ASTM 1238 D, 2.16 kg, 190° C.).
In another embodiment some polymers described above have a melt index (as determined by ASTM 1238 D, 2.16 kg, 190 deg. C.) of 25 dg/min or more, preferably 50 dg/min or more, preferably 100 dg/min or more, more preferably 200 dg/min or more, more preferably 500 dg/mn or more, more preferably 2000 dg/min or more.
In another embodiment the polymer has a melt index of 900 dg/min or more.
In another embodiment the polymer described above has a range of crystallization of 10 to 60° C. wide, preferably 20 to 50° C., preferably 30 to 45° C. in the DSC traces. In DSC traces where there are two or more non-overlapping peaks, then each peak has a range of crystallization of 10 to 60° C. wide, preferably 20 to 50° C., preferably 30 to 45° C. in the DSC traces.
In another embodiment the polymer produced by this invention has a molecular weight distribution (Mw/Mn) of at least 2, preferably at least 5, preferably at least 10, even more preferably at least 20.
In another embodiment the polymer produced may have a unimodal, bimodal, or multimodal molecular weight distribution (Mw/Mn) distribution of polymer species as determined by Size Exclusion Chromatography (SEC). By bimodal or multimodal is meant that the SEC trace has more than one peak or inflection points. An inflection point is that point where the second derivative of the curve changes in sign (e.g., from negative to positive or vice versus).
In another embodiment the polymer described above has an Energy of activation of 8 to 15 cal/mol. Energy of activation was calculated using the relationships of complex viscosity and temperature over the region where thermal effects are responsible for viscosity increase (assuming an Arrhenius-like relationship).
In another embodiment the polymers of this invention may have a crystallinity of at least 5%.
In another embodiment the polymer described above may also have one or more of the following:
a) a peak melting point between 60 and 190° C., or between about 60 and 150° C., or between 80 and 130° C.; and/or
b) a viscosity of 8000 mPa·sec or less at 190° C. (as measured by ASTM D 3236 at 190° C.); or 5000 or less, or 4000 or less, or 3000 or less, or 1500 or less, or between 250 and 6000 mPa·sec, or between 500 and 5500 mPa·sec, or between 500 and 3000 mPa·sec, or between 500 and 1500 mPa·sec, or a viscosity of 8000 mPa·sec or less at 160° C. (as measured by ASTM D 3236 at 160° C.); or 7000 or less, or 6000 or less, or 5000 or less, or 4000 or less, or 3000 or less, or 1500 or less, or between 250 and 6000 mPa·sec, or between 500 and 5500 mPa·sec, or between 500 and 3000 mPa·sec, or between 500 and 1500 mPa·sec; and/or
c) an Hf (Heat of fusion) of 70 J/g or less, or 60 J/g or less, or 50 J/g or less; or 40 J/g or less, or 30 J/g or less, or 20 J/g or less and greater than zero, or greater than 1 J/g, or greater than 10 J/g, or between 20 and 50 J/g; and or
d) a Shore A Hardness (as measured by ASTM 2240) of 70 or less, or 60 or less, or 50 or less, or 40 or less or 30 or less, or 20 or less; and or
e) a Shear Adhesion Fail Temperature (SAFT—as measured by ASTM 4498) of 40 to 150° C., or 60 to 130° C., or 65 to 110° C., or 70–80° C.; and or;
f) a Dot T-Peel of between 1 Newton and 10,000 Newtons, or 3 and 4000 Newtons, or between 5 and 3000 Newtons, or between 10 and 2000 Newtons, or between 15 and 1000 Newtons; and/or
g) a set time of several days to 0.1 second, or 60 seconds or less, or 30 seconds or less, or 20 seconds or less, or 15 seconds or less, or 10 seconds or less, or 5 seconds or less, or 4 seconds or less, or 3 seconds or less, more or 2 seconds or less, or 1 second or less; and or
h) an Mw/Mn of greater than 1 to 75, or 2 to 60, or 2 to 50, or 3 to 20; and/or
i) an Mz of 500,000 or less, preferably 15,000 to 500,000, or 20,000 to 400,000, or 25,000 to 350,000.
Useful combinations of features include polymers as described above having a Dot T-Peel of between 1 Newton and 10,000 Newtons, or 3 and 4000 Newtons, or between 5 and 3000 Newtons, or between 10 and 2000 Newtons, or between 15 and 1000 Newtons and:
1. an Mw of 30,000 or less, a peak melting point between 60 and 190° C., a Heat of fusion of 1 to 70 J/g, a branching index (g′) of 0.90 or less measured at the Mz of the polymer; and a melt viscosity of 8000 mPa·sec or less at 190° C.; or
2. an Mz of 20,000 to 500,000 and a SAFT of 60 to 150° C.; or
3. an Mz/Mn of 2–200 and a set time of 2 seconds or less; or
4. an Hf (heat of fusion) of 20 to 50 J/g, an Mz or 20,000–500,000 and a shore hardness of 50 or less; or
5. an Mw/Mn of greater than 1 to 50, a viscosity of 5000 or less mPa·sec at 190° C.; or
6. an Mw of 50,000 or less, a peak melting point between 60 and 190° C., a heat of fusion of 2 to 70 J/g, a branching index (g′) of 0.70 or less measured at the Mz of the polymer, and a melt viscosity of 8000 mPa·sec or less at 190° C.
In a preferred embodiment, the polymer of this invention comprises amorphous, crystalline and branch-block molecular structures.
In a preferred embodiment the polymer comprises at least 50 weight % propylene, preferably at least 60% propylene, alternatively at least 70% propylene, alternatively at least 80% propylene. In another embodiment the polymer comprises propylene and 50 mole % ethylene or less, preferably 45 mole % ethylene or less, more preferably 40 mole % ethylene or less, more preferably 35 mole % ethylene or less, more preferably 30 mole % ethylene or less, more preferably 25 mole % ethylene or less, more preferably 20 mole % ethylene or less, more preferably 15 mole % ethylene or less, more preferably 10 mole % ethylene or less, more preferably 5 mole % ethylene or less.
In another embodiment the polymer produced has a glass transition temperature (Tg) as measured by ASTM E 1356 of 0° C. or less, preferably −5° C. or less, alternatively between −5° C. and −40° C., alternatively between −5° C. and −15° C.
In another embodiment the polymer of this invention has an amorphous content of at least 50%, alternatively at least 60%, alternatively at least 70%, even alternatively between 50 and 95%. Percent amorphous content is determined using Differential Scanning Calorimetry measurement according to ASTM E 794-85.
In another embodiment the polymer of this invention has a crystallinity of at least 40%, preferably at least 30%, alternatively at least 35%, alternatively at least 20%, alternatively between 10% and 30%. Percent crystallinity content is determined using Differential Scanning Calorimetry measurement according to ASTM E 794-85. In another embodiment the polymer of this invention has a crystallinity of 40% or less, alternatively 30% or less, alternatively 20% or less, even alternatively between 10% and 30%. Percent amorphous content is determined by substracting the % crystallinity from 100.
In another embodiment the polymer produced by this invention has a molecular weight distribution (Mw/Mn) of at least 1.5, preferably at least 2, preferably at least 5, preferably at least 10, even alternatively at least 20. In other embodiments the Mw/Mn is 20 or less, 10 or less, even 5 or less. Molecular weight distribution generally depends on the catalysts used and process conditions such as temperature, monomer concentration, catalyst ratio, if multiple catalysts are used, and the presence or absence of hydrogen. Hydrogen may be used at amounts up to 2 weight %, but is preferably used at levels of 50 to 500 ppm.
In another embodiment the polymer produced is found to have at least two molecular weights fractions are present at greater than 20 weight % each based upon the weight of the polymer as measured by Gel Permeation Chromatography. The fractions can be identified on the GPC trace by observing two distinct populations of molecular weights. An example would be a GPC trace showing a peak at 20,000 Mw and another peak at 50,000 Mw where the area under the first peak represents more than 20 weight % of the polymer and the area under the second peak represents more than 20 weight % of the polymer.
In another embodiment the polymer of this invention has 20 weight % or more (based upon the weight of the starting polymer) of hexane room temperature soluble fraction, and 70 weight % or less, preferably 50 weight % or less of Soxhlet boiling heptane insolubles, based upon the weight of the polymer. Soxhlet heptane insoluble refers to one of the fractions obtained when a sample is fractionated using successive solvent extraction technique. The fractionations are carried out in two steps: one involves room temperature solvent extraction, the other soxhlet extraction. In the room temperature solvent extraction, about one gram of polymer is dissolved in 50 ml of solvent (hexane) to isolate the amorphous or very low molecular weight polymer species. The mixture is stirred at room temperature for about 12 hours. The soluble fraction is separated from the insoluble material using filtration under vacuum. The insoluble material is then subjected to a Soxhlet extraction procedure. This involves the separation of polymer fractions based on their solubility in various solvents having boiling points from just above room temperature to 110° C. The insoluble material from the room temperature solvent extraction is first extracted overnight with hexane (Soxhlet); the extracted material is recovered by evaporating the solvent and weighing the residue. The insoluble sample is then extracted with heptane and after solvent evaporation, it is weighed. The insolubles and the thimble from the final stage are air-dried in a hood to evaporate most of the solvent, then dried in a nitrogen-purged vacuum oven. The amount of insoluble left in the thimble is then calculated, provided the tare weight of the thimble is known.
In another embodiment, the polymers produced in this invention have a heptane insoluble fraction between 20% and 70 weight %, based upon the weight of the starting polymer, and the heptane insoluble fraction has branching index g′ of 0.9 (preferably 0.7) or less as measured at the Mz of the polymer. In a preferred embodiment the composition also has at least 20 weight % hexane soluble fraction, based upon the weight of the starting polymer. In another embodiment, the polymers produced in this invention have a heptane insoluble fraction between 20% and 70 weight %, based upon the weight of the starting polymer and a Mz between 20,000 and 500,000 of the heptane insoluble portion. In a preferred embodiment the composition also has at least 20 weight % hexane soluble fraction, based upon the weight of the starting polymer. In another embodiment the polymers produced have a hexane soluble portion of at least 20 weight %, based upon the weight of the starting polymer and that hexane soluble portion has a Tg but not a Tm.
In another embodiment the polymer of this invention comprises less than 4.5 mole % of ethylene, preferably less than 4.0 mole % ethylene, alternatively less than 3.5 mole % ethylene, alternatively less than 3.0 mole % ethylene, alternatively less than 2.5 mole % ethylene, alternatively less than 2.0 mole % ethylene, alternatively less than 1.5 mole % ethylene, alternatively less than 1.0 mole % ethylene, alternatively less than 0.5 mole % ethylene, alternatively less than 0.25 mole % ethylene, alternatively 0 mole % ethylene.
For ease of reference the polymer produced by the second catalyst having at least 40% crystallinity may also be referred to as the “semi-crystalline polymer” and the polymer produced by the first catalyst component having a crystallinity of less than 20% may be referred to as the “amorphous polymer.”
In another embodiment of this invention the polymer produced has a characteristic three-zone complex viscosity-temperature pattern, as shown in FIG. 1. The temperature dependence of complex viscosity was measured using ARES dynamic mechanical spectrometer operating at a frequency of 10 rad/s, with a strain of 20% under a nitrogen atmosphere, and a cooling rate of 10° C./min. The sample was first molten then gradually cooled down to room temperature while monitoring the build-up in complex viscosity. Above the melting point, which is typical of polymer processing temperature, the complex viscosity is relatively low (Zone I) and increases gradually with decreaseing temperature. In zone II, a sharp increase in complex viscosity appears as temperature is dropped. The third zone (Zone III) is the high complex viscosity zone, which appears at lower temperatures corresponding to application temperatures. In Zone III the complex viscosity is high and increases gradually with further decrease in temperature. Such a complex viscosity profile provides, in hot melt adhesive applications, a desirable combination of long opening time at processing temperatures and fast set time at lower temperatures.
In a preferred embodiment, the polymers produced herein having less than 1 mol % ethylene, have at least 2 mol % (CH2)2 units, preferably 4 mol %, preferably 6 mol %, more preferably 8 mol %, more preferably 10 mol %, more preferably 12 mol %, more preferably 15 mol %, more preferably 18 mol %, more preferably 20 mol % as measured by Carbon 13 NMR as described below.
In an another embodiment, the polymers produced herein having between 1 and 5 mol % ethylene, have at least 2+X mol % (CH2)2 units, preferably 4+X mol %, preferably 6+X mol %, more preferably 8+X mol %, more preferably 10+X mol %, more preferably 12+X mol %, more preferably 15+X mol %, more preferably 18+X mol %, more preferably 20+X mol %, where X is the mole % of ethylene as measured by Carbon 13 NMR as described below.
In a preferred embodiment, the polymers produced herein, having less than 1 Mol % ethylene, have an amorphous component (which is defined to be that portion of the polymer composition that has a crystallinity of less than 20%) which contains at least 3 mol % (CH2)2 units, preferably 4 mol %, preferably 6 mol %, more preferably 8 mol %, more preferably 10 mol %, more preferably 12 mol %, more preferably 15 mol %, more preferably 18 mol %, more preferably 20 mol % as measured by Carbon 13 NMR as described below.
In an another embodiment, the polymers produced herein having between 1 and 5 mol % ethylene, have an amorphous component (which is defined to be that portion of the polymer composition that has a crystallinity of less than 20%) which contains at least 3+X mol % (CH2)2 units, preferably 4+X mol %, preferably 6+X mol %, more preferably 8+X mol %, more preferably 10+X mol %, more preferably 12+X mol %, more preferably 15+X mol %, more preferably 18+X mol %, more preferably 20+X mol %, where X is the mole % of ethylene as measured by Carbon 13 NMR as described below.
Monomers
In a preferred embodiment the polymer comprises an olefin homopolymer or copolymer, comprising one or more C3 to C40 alpha olefins. In another preferred embodiment the olefin polymer further comprises one or more diolefin comonomers, preferably one or more C4 to C40 diolefins.
In a preferred embodiment the polymer comprises an olefin homopolymer or copolymer, having less than 5 mol % ethylene, and comprising one or more C3 to C40 alpha olefins. In another preferred embodiment the olefin polymer, having less than 5 mol % ethylene, further comprises one or more diolefin comonomers, preferably one or more C4 to C40 diolefins.
In a preferred embodiment the polymer produced herein is a propylene homopolymer or copolymer. The comonomer is preferably a C4 to C20 linear, branched or cyclic monomer, and in one embodiment is a C4 to C12 linear or branched alpha-olefin, preferably butene, pentene, hexene, heptene, octene, nonene, decene, dodecene, 4-methyl-pentene-1,3-methyl pentene-1,3,5,5-trimethyl-hexene-1, and the like. Ethylene may be present at 5 mol % or less.
In another embodiment the polymer produced herein is a copolymer of one or more linear or branched C3 to C30 prochiral alpha-olefins or C5 to C30 ring containing olefins or combinations thereof capable of being polymerized by either stereospecific and non-stereospecific catalysts. Prochiral, as used herein, refers to monomers that favor the formation of isotactic or syndiotactic polymer when polymerized using stereospecific catalyst(s).
The polymerizable olefinic moiety can be linear, branched, cyclic-containing, or a mixture of these structures. Preferred linear alpha-olefins include C3 to C8 alpha-olefins, more preferably propylene, 1-butene, 1-hexene, and 1-octene, even more preferably propylene or 1-butene. Preferred branched alpha-olefins include 4-methyl-1-pentene, 3-methyl-1-pentene, and 3,5,5-trimethyl-1-hexene, 5-ethyl-1-nonene. Preferred aromatic-group-containing monomers contain up to 30 carbon atoms. Suitable aromatic-group-containing monomers comprise at least one aromatic structure, preferably from one to three, more preferably a phenyl, indenyl, fluorenyl, or naphthyl moiety. The aromatic-group-containing monomer further comprises at least one polymerizable double bond such that after polymerization, the aromatic structure will be pendant from the polymer backbone. The aromatic-group containing monomer may further be substituted with one or more hydrocarbyl groups including but not limited to C1 to C10 alkyl groups. Additionally two adjacent substitutions may be joined to form a ring structure. Preferred aromatic-group-containing monomers contain at least one aromatic structure appended to a polymerizable olefinic moiety. Particularly preferred aromatic monomers include styrene, alpha-methylstyrene, para-alkylstyrenes, vinyltoluenes, vinylnaphthalene, allyl benzene, and indene, especially styrene, paramethyl styrene, 4-phenyl-1-butene and allyl benzene.
Non aromatic cyclic group containing monomers are also preferred. These monomers can contain up to 30 carbon atoms. Suitable non-aromatic cyclic group containing monomers preferably have at least one polymerizable olefinic group that is either pendant on the cyclic structure or is part of the cyclic structure. The cyclic structure may also be further substituted by one or more hydrocarbyl groups such as, but not limited to, C1 to C10 alkyl groups. Preferred non-aromatic cyclic group containing monomers include vinylcyclohexane, vinylcyclohexene, vinylnorbornene, ethylidene norbornene, cyclopentadiene, cyclopentene, cyclohexene, cyclobutene, vinyladamantane and the like.
Preferred diolefin monomers useful in this invention include any hydrocarbon structure, preferably C4 to C30, having at least two unsaturated bonds, wherein at least two of the unsaturated bonds are readily incorporated into a polymer by either a stereospecific or a non-stereospecific catalyst(s). It is further preferred that the diolefin monomers be selected from alpha, omega-diene monomers (i.e. di-vinyl monomers). More preferably, the diolefin monomers are linear di-vinyl monomers, most preferably those containing from 4 to 30 carbon atoms. Examples of preferred dienes include butadiene, pentadiene, hexadiene, heptadiene, octadiene, nonadiene, decadiene, undecadiene, dodecadiene, tridecadiene, tetradecadiene, pentadecadiene, hexadecadiene, heptadecadiene, octadecadiene, nonadecadiene, icosadiene, heneicosadiene, docosadiene, tricosadiene, tetracosadiene, pentacosadiene, hexacosadiene, heptacosadiene, octacosadiene, nonacosadiene, triacontadiene, particularly preferred dienes include 1,6-heptadiene, 1,7-octadiene, 1,8-nonadiene, 1,9-decadiene, 1,10-undecadiene, 1,11-dodecadiene, 1,12-tridecadiene, 1,13-tetradecadiene, and low molecular weight polybutadienes (Mw less than 1000 g/mol). Preferred cyclic dienes include cyclopentadiene, vinylnorbornene, norbornadiene, ethylidene norbornene, divinylbenzene, dicyclopentadiene or higher ring containing diolefins with or without substituents at various ring positions.
In a preferred embodiment one or more dienes are present in the polymer produced herein at up to 10 weight %, preferably at 0.00001 to 1.0 weight %, preferably 0.002 to 0.5 weight %, even more preferably 0.003 to 0.2 weight %, based upon the total weight of the composition. In some embodiments 500 ppm or less of diene is added to the polymerization, preferably 400 ppm or less, preferably or 300 ppm or less. In other embodiments at least 50 ppm of diene is added to the polymerization, or 100 ppm or more, or 150 ppm or more.
In a preferred embodiment the olefin polymer is homo-polypropylene. In another preferred embodiment the olefin polymer comprises propylene, ethylene, preferably less than 5 mol % ethylene, and at least one divinyl comonomer. In another preferred embodiment the olefin polymer comprises propylene and at least one divinyl comonomer.
In another embodiment, the olefin polymer comprises:
a first monomer present at from 40 to 95 mole %, preferably 50 to 90 mole %, preferably 60 to 80 mole %, and
a comonomer present at from 5 to 40 mole %, preferably 10 to 60 mole %, more preferably 20 to 40 mole %, and
a termonomer present at from 0 to 10 mole %, more preferably from 0.5 to 5 mole %, more preferably 1 to 3 mole %.
In a preferred embodiment the first monomer comprises one or more of any C3 to C8 linear, branched or cyclic alpha-olefins, including propylene, butene (and all isomers thereof), pentene (and all isomers thereof), hexene (and all isomers thereof), heptene (and all isomers thereof), and octene (and all isomers thereof). Preferred monomers include propylene, 1-butene, 1-hexene, 1-octene, and the like.
In a preferred embodiment the comonomer comprises one or more of any C2 to C40 linear, branched or cyclic alpha-olefins (provided ethylene, if present, is present at 5 mole % or less), including ethylene, propylene, butene, pentene, hexene, heptene, and octene, nonene, decene, undecene, dodecene, hexadecene, styrene, 3,5,5-trimethylhexene-1,3-methylpentene-1,4-methylpentene-1, norbornene and cyclopentene.
In a preferred embodiment the termonomer comprises one or more of any C2 to C40 linear, branched or cyclic alpha-olefins, (preferably ethylene, if present, is present at 5 mole % or less), including, but not limited to, ethylene, propylene, butene, pentene, hexene, heptene, and octene, nonene, decene, undecene, dodecene, hexadecene, butadiene, 1,5-hexadiene, 1,6-heptadiene, 1,4-pentadiene, 1,7-octadiene, 1,8-nonadiene, 1,9-decadiene, 1,11-dodecadiene, styrene, 3,5,5-trimethylhexene-1,3-methylpentene-1,4-methylpentene-1, and cyclopentadiene.
In a preferred embodiment the polymer comprises propylene and from 0 to 50 mole % ethylene, preferably from 0 to 30 mole % ethylene, more prefeably from 0 to 15 mole % ethylene, more preferably from 0 to 10 mole % ethylene, more preferably from 0 to 5 mole % ethylene.
In a preferred embodiment the polymer comprises propylene and from 0 to 50 mole % butene, preferably from 0 to 30 mole % butene, more prefeably from 0 to 15 mole % butene, more preferably from 0 to 10 mole % butene, more preferably from 0 to 5 mole % butene.
In a preferred embodiment the polymer comprises propylene and from 0 to 50 mole % hexene, preferably from 0 to 30 mole % hexene, more prefeably from 0 to 15 mole % hexene, more preferably from 0 to 10 mole % hexene, more preferably from 0 to 5 mole % hexene.
Process
This invention relates to a continuous process to produce a branched olefin polymer comprising:
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 20% or less (preferably 5% or less) under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 40% (preferably 20% or more) or more at the selected polymerization conditions;
3) contacting a catalyst component, one or more activators and one or more C2 to C40 olefins in a first reaction zone, at a temperature of greater than 70° C. (preferably 100° C. or more), and at a residence time of 120 minutes or less (preferably 60 minutes or less); and
4) transfering the contents of the first reaction zone to a second reaction zone and further contacting the contents with a catalyst component, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C. (preferably 100° C. or more), and at a residence time of 120 minutes or less (preferably 60 minutes or less); and
5) optionally, transferring the contents of the second reaction zone to a third reaction zone and further contacting the contents with a catalyst compound, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C. (preferably greater than 100° C.), and at a residence time of 120 minutes or less, (preferably 60 minutes or less); and
6) recovering a branched olefin polymer comprising at least 50 mole % of one or more C3 to C40 olefins,
where the first catalyst component is present in at least one reaction zone and the second catalyst component is present in a second reaction zone and where in at least one reaction zone the C2 to C40 olefin is a C3 to C40 alpha-olefin.
This invention further relates to a continuous process to produce a branched olefin polymer comprising:
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and and a heat of fusion of 70 J/g or less (preferably 10 J/g or less) under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more (preferably 30% or more) at the selected polymerization conditions;
3) contacting a catalyst component, one or more activators and one or more C2 to C40 olefins in a first reaction zone, at a temperature of greater than 70° C. (preferably greater than 100° C.), and at a residence time of 120 minutes or less, (preferably 60 minutes or less); and
4) transfering the contents of the first reaction zone to a second reaction zone and further contacting the contents with a catalyst component, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C., (preferably greater than 100° C.), and at a residence time of 120 minutes or less (preferably 60 minutes or less); and
5) optionally, transferring the contents of the second reaction zone to a third reaction zone and further contacting the contents with a catalyst compound, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C. (preferably greater than 100° C.), and at a residence time of 120 minutes or less (preferably 60 minutes or less); and
6) recovering a branched olefin polymer comprising at least 50 mole % of one or more C3 to C40 olefins,
where the first catalyst component is present in at least one reaction zone and the second catalyst component is present in a second reaction zone and where in at least one reaction zone the C2 to C40 olefin is a C3 to C40 alpha-olefin.
This invention further relates to a continuous process to produce a branched olefin polymer comprising:
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a heat of fusion of 70 J/g or less (preferably 10 J/g or less), capable of polymerizing macromonomers having reactive termini at the selected polymerization conditions;
2) selecting a second catalyst component capable of producing macromonomers having reactive termini, an Mw of 100,000 or less and a crystallinity of 20% or more (preferably 30% or more) at the selected polymerization conditions;
3) contacting a catalyst component, one or more activators and one or more C2 to C40 olefins in a first reaction zone, at a temperature of greater than 70° C., (preferably greater than 100° C.), and at a residence time of 120 minutes or less, (preferably 60 minutes or less); and
4) transfering the contents of the first reaction zone to a second reaction zone and further contacting the contents with a catalyst component, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C., (preferably greater than 100° C.), and at a residence time of 120 minutes or less, (preferably 60 minutes or less); and
5) optionally, transferring the contents of the second reaction zone to a third reaction zone and further contacting the contents with a catalyst compound, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C., (preferably greater than 100° C.), and at a residence time of 120 minutes or less, (preferably 60 minutes or less); and
6) recovering a branched olefin polymer comprising at least 50 mole % of one or more C3 to C40 olefins,
where the first catalyst component is present in at least one reaction zone and the second catalyst component is present in a second reaction zone and where in at least one reaction zone the C2 to C40 olefin is a C3 to C40 alpha-olefin.
This invention further relates to a process to produce the olefin polymers described above comprising:
1) selecting a first catalyst component capable of producing a polymer having an Mw of 30,000 or less and a heat of fusion of 70 J/g or less (preferably 10 J/g or less), capable of polymerizing macromonomers having reactive termini;
2) selecting a second catalyst component capable of producing macromonomers having reactive termini, an Mw of 30,000 or less and a crystallinity of 20% or more (preferably 30% or more);
3) contacting a catalyst component, one or more activators and one or more C2 to C40 olefins in a first reaction zone, at a temperature of greater than 70° C., (preferably greater than 100° C.), and at a residence time of 120 minutes or less, (preferably 60 minutes or less); and
4) transfering the contents of the first reaction zone to a second reaction zone and further contacting the contents with a catalyst component, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C., (preferably greater than 100° C.), and at a residence time of 120 minutes or less, (preferably 60 minutes or less); and
5) optionally, transferring the contents of the second reaction zone to a third reaction zone and further contacting the contents with a catalyst compound, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C., (preferably greater than 100° C.), and at a residence time of 120 minutes or less, (preferably 60 minutes or less); and
6) recovering a branched olefin polymer comprising at least 50 mole % of one or more C3 to C40 olefins,
where the first catalyst component is present in at least one reaction zone and the second catalyst component is present in a second reaction zone and where in at least one reaction zone the C2 to C40 olefin is a C3 to C40 alpha-olefin.
In another preferred embodiment this invention relates to a continuous process to produce a branched olefin polymer comprising:
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less, preferably 80,000 or less, preferably 60,000 or less and a crystallinity of 20% or less, preferably 15% or less, more preferably 10% or less, under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less, preferably 80,000 or less, preferably 60,000 or less and a crystallinity of 20% or more, preferably 40% or more, preferably 50% or more, more preferably 60% or more at the selected polymerization conditions;
3) contacting a catalyst component, one or more activators and one or more C2 to C40 olefins (preferably one or more C3 to C12 olefins, preferably C3 and one or more of ethylene and/or C4 to C20 comonomers, and, optionally one or more diolefins, preferably a C4 to C20 diene) in a first reaction zone, at a temperature of greater than 70° C., (preferably greater than 100° C., more preferably greater than 105° C., more preferably greater than 110° C., more preferably greater than 115° C.), and at a residence time of 120 minutes or less, (preferably 60 minutes or less, more preferably 50 minutes or less, preferably 40 minutes, preferably 30 minutes or less, preferably 25 minutes or less, more preferably 20 minutes or less, more preferably 15 minutes or less, more preferably at 10 minutes or less, more preferably at 5 minutes or less, more preferably at 3 minutes or less); and
4) transfering the contents of the first reaction zone to a second reaction zone and further contacting the contents with a catalyst component, an activator and or one or more C2 to C40 olefins (preferably one or more C3 to C12 olefins, preferably C3 and one or more of ethylene and/or C4 to C20 comonomers, and, optionally one or more diolefins, preferably a C4 to C20 diene), at a temperature of greater than 70° C., preferably greater than 100° C., more preferably greater than 105° C., more preferably greater than 110° C., more preferably greater than 115° C.), and at a residence time of 120 minutes or less, preferably 60 minutes or less, more preferably 50 minutes or less, preferably 40 minutes, preferably 30 minutes or less, preferably 25 minutes or less, more preferably 20 minutes or less, more preferably 15 minutes or less, more preferably at 10 minutes or less, more preferably at 5 minutes or less, more preferably at 3 minutes or less); and
5) optionally, transferring the contents of the second reaction zone to a third reaction zone and further contacting the contents with a catalyst compound, an activator and or one or more C2 to C40 olefins (preferably one or more C3 to C12 olefins, preferably C3 and one or more of ethylene and/or C4 to C20 comonomers, and, optionally one or more diolefins, preferably a C4 to C20 diene), at a temperature of greater than 70° C., (preferably greater than 100° C., more preferably greater than 105° C., more preferably greater than 110° C., more preferably greater than 115° C.), and at a residence time of 120 minutes or less, (preferably 60 minutes or less, more preferably 50 minutes or less, preferably 40 minutes, preferably 30 minutes or less, preferably 25 minutes or less, more preferably 20 minutes or less, more preferably 15 minutes or less, more preferably at 10 minutes or less, more preferably at 5 minutes or less, more preferably at 3 minutes or less); and
6) recovering a branched olefin polymer comprising at least 50 mole % of one or more C3 to C40 olefins, where the first catalyst component is present in at least one reaction zone and the second catalyst component is present in a second (preferably different) reaction zone and where in at least one reaction zone the C2 to C40 olefin is a C3 to C40 alpha-olefin; and
a) wherein the ratio of the first catalyst to the second catalyst is from 1:1 to 50:1, preferably 1:1 to 30:1, preferably 1:1 to 20:1, more preferably 1:1 to 1:10;
b) wherein the activity of the catalyst components is at least 3 kilograms, preferably at least 50 kilograms, more preferably at least 100 kilograms, more preferably at least 200 kilograms, more preferably, 300 kilograms, more preferably 400 kilograms, more preferably 50 kilograms of polymer per gram of the catalyst mixture; and wherein at least 80%, preferably at least 85%, more preferably at least 90%, more preferably at least 95% of the olefins are converted to polymer.
In another embodiment at least 20% or more of the olefins are converted to polymer, preferably 20% or more, more preferably 60% or more, more preferably 75% or more, more preferably 85% or more, more preferaby 95% or more.
In a preferred embodiment the process described above takes place in a solution phase, slurry or bulk phase polymerization process.
By continuous is meant a system that operates (or is intended to operate) without interuption or cessation. For example a continuous process to produce a polymer would be one wherethe reactants are continually introduced into one or more reactors and polymer product is continually withdrawn.
In another preferred embodiment, in the process described above the concentrations of the reactants vary by 20% or less in the reaction zone during the residence time, preferably by 15% or less, more preferably by 10% or less. In a preferred embodiment the concentration of the monomer(s) remains constant in the reaction zone during the residence time. Preferably the concentration of the monomer(s) varies by 20% or less, preferably by 15% or less, more preferably by 10% or less, more preferably by 5% or less.
In a preferred embodiment the concentration of the catalyst components remains constant in the reaction zone during the residence time. Preferably the concentration of the monomer(s) varies by 20% or less, preferably by 15% or less, more preferably by 10% or less, more preferably by 5% or less.
In a preferred embodiment the concentration of the activator(s) remains constant in the reaction zone during the residence time. Preferably the concentration of the monomer(s) varies by 20% or less, preferably by 15% or less, more preferably by 10% or less, more preferably by 5% or less.
In another preferred embodiment a third catalyst (or more) may be present in the processes described above. The third catalyst may be any of the catalyst components listed herein. Preferred third catalysts include catalysts that are capable of producing waxes. Particularly preferred third catalysts include those capable of producing polymer having an Mw of 20,000 or less and a crystallinity of 10% or less at the selected polymerization conditions. In another embodiment, particularly preferred third catalysts include those capable of producing polymer having an Mw of 20,000 or less and a crystallinity of 10% or more, preferably 20% or more, at the selected polymerization conditions.
Other preferred third catalysts may include any catalyst described herein. One may select two or more catalysts to produce various macromonomers having reactive termini, used in combination with a catalyst that can polymerize such macromonomers. One may select two or more catalysts that can polymerize macromonomers and one catalyst that can produce macromonomers with reactive termini. Likewise one could also select three catalysts that produce different polymers under the same reaction conditions. For example one could select a catalyst that produces a somewhat crystalline polymer, one that produces a very crystalline polymer and one that produces an amorphous polymer, any of which may produce macromonomers with reactive termini or polymerize polymers having reactive termini. Similarly one could select two catalysts, one that produces crystalline polymers and one that produces an amorphous polymer, any of which may make macromonomers with reactive termini or polymerize polymers having reactive termini. Likewise one could select a catalyst that produces a somewhat crystalline polymer, one that produces a wax and one that produces an amorphous polymer, any of which may make macromonomers with reactive termini or polymerize polymers having reactive termini.
By reaction zone is meant an area where the activated catalyst and monomers can react.
By macromonomers having reactive termini is meant a polymer having twelve or more carbon atoms (preferably 20 or more, more preferably 30 or more, more preferably between 12 and 8000 carbon atoms) and having a vinyl, vinylidene, vinylene or other terminal group that can be polymerized into a growing polymer chain. By capable of polymerizing macromonomer having reactive termini is meant a catalyst component that can incorporate a macromonomer (which tend to be molecules larger than a typical single monomer such as ethylene or propylene), having reactive termni into a growing polymer chain. Vinyl terminated chains are generally more reactive than vinylene or vinylidene terminated chains.
In a preferred embodiment propylene is present in the first, second and or third reaction zone, preferably at an amout of 20 to 100 weight %, based upon the weight of the monomers present in the reaction zone, preferably 40 to 99 weight %, more preferably 60 to 95 weight %.
In a preferred embodiment ethylene is present in the first, second and or third reaction zone, preferably at an amount of up to 50 weight %, preferably at 1 to 40 weight %, preferably 5–20 weight %, preferably at 5–10 weight%, based upon the weight of the monomers in the reaction zone. In another embodiment, ethylene is not present in the reaction zone, or if present is present at 10 weight % or less, preferably 5 weight % or less, preferably 3 weight % or less, preferably 2 weight % or less, preferably 1 weight % or less, preferably 0.5 weight % or less, based uon the weight of the monomers in the reaction zone.
In a preferred embodiment ethylene and propylene are present in the first, second and or third reaction zone.
In another embodiment propylene is present in the first reaction zone at 100 weight %, (based upon the weight of the monomers present in the first reaction zone) and ethylene is present in the second reaction zone at up to 50 weight %, (based upon the weight of the monomers present in the second reaction zone).
In another embodiment ethylene is present in the first reaction zone at 100 weight %, (based upon the weight of the monomers present in the first reaction zone).
In another embodiment propylene is present at 100 weight %, (based upon the weight of the monomers present in the first reaction zone) in the first reaction zone and the second reaction zone.
In another embodiment propylene and ethylene are present in the the first reaction zone and no ethylene, other than residual ethylene monomer present in the contents of the first reaction zone, is introduced into the second reaction zone.
In another embodiment ethylene is intermittently introduced into one or more reaction zones.
In another embodiment propylene is present in the first reaction zone, ethylene is present in the second reaction zone, the second catalyst component is present in the first reaction zone, and the first catalyst component is present in the second reaction zone.
In another embodiment propylene is present in the first reaction zone, propylene and ethylene or other monomers are present in the second reaction zone, the second catalyst component is present in the first reaction zone, and the first catalyst component is present in the second reaction zone.
In another embodiment propylene is present in the first reaction zone, propylene and ethylene are present in the second reaction zone, the second catalyst component is present in the first reaction zone, and the first catalyst component is present in the second reaction zone.
In another embodiment propylene and ethylene are present in the first reaction zone, propylene is present in the second reaction zone, the first catalyst component is present in the first reaction zone, and the second catalyst component is present in the second reaction zone.
In another embodiment propylene is present in the first reaction zone, propylene and ethylene are present in the second reaction zone, the second catalyst component is present in the first reaction zone, and the second catalyst component is present in the second reaction zone.
In another embodiment ethylene is present in the first reaction zone, propylene and ethylene or other monomers are present in the second reaction zone, the first catalyst component is present in the first reaction zone, and the first and the second catalyst components are present in the second reaction zone, and the catalyst compound present in the first reaction zone is capable of producing polymer having an Mw of 20,000 or less and a crystallinity of 50% or more at the selected polymerization conditions.
In another embodiment ethylene is present in the first reaction zone, propylene is present in the second reaction zone, propylene is present in the third reaction zone, the first catalyst component is present in the second reaction zone, and the second catalyst component is present in the third reaction zone, and the catalyst compound present in the first reaction zone is capable of producing polymer having an Mw of 20,000 or less and a crystallinity of 10% or less at the selected polymerization conditions.
In another embodiment ethylene is present in the first reaction zone, propylene is present in the second reaction zone, propylene is present in the third reaction zone, the first catalyst component is present in the second reaction zone, and the second catalyst component is present in the third reaction zone, and the catalyst compound present in the first reaction zone is capable of producing polymer having an Mw of 20,000 or less and a crystallinity of 10% or more, preferably 20% or more, preferably 30% or more, preferably 40% or more, preferably 50% or more at the selected polymerization conditions.
In another embodiment all catalyst components are only introduced into the first reaction zone and no catalyst components, other than residual catalyst components present in the contents of the first reaction zone, is introduced into the second reaction zone.
In another embodiment only one catalyst component is present in all the reaction zones. The catalyst component can be introducted into the first reaction zone only, or introcuced into multiple reaction zones.
In another embodiment more than two catalyst components are present in one or all reaction zones, at least one of the catalyst components is capable of producing a polymer having a crystallininty of 5% or less, and at least one other of the catalyst components is capable of producing a polymer having a crystallininty of 20% or more at the selected polymerization condtions.
In another embodiment a diolefin monomer is present in one or all of the reaction zones.
In another embodiment hydrogen is present in one or all of the reaction zones.
In a particular embodiment the present invention is directed to a polyolefin polymer produced by copolymerizing one or more C3 or higher alpha-olefins and/or one or more di-vinyl monomers, and optionally up to 5 mol % ethylene, in the presence of at least one stereospecific catalyst system and at least one other catalyst system. The polymer so produced may contain amorphous polymer segments and crystalline polymer segments in which at least some of the segments are linked. Typically the amorphous and the crystalline polymer segments are copolymers of one or more alpha-olefins (optionally including up to 5 mol % ethylene) and/or one or more monomers having at least two olefinically unsaturated bonds. Both of these unsaturated bonds are suitable for and readily incorporated into a growing polymer chain by coordination polymerization using either the first or second catalyst systems independently such that the di-olefin is incorporated into polymer segments produced by both catalysts in the mixed catalyst system according to this invention. In a preferred embodiment these monomers having at least two olefinically unsaturated bonds are di-olefins, preferably di-vinyl monomers. Crosslinking of at least a portion of the mixture of polymer segments is believed to be accomplished during the polymerization of the composition by incorporation of a portion of di-vinyl comonomers into two polymer segments, thus producing a crosslink between those segments.
In another embodiment, polyolefin branch-block compositions containing amorphous and semi-crystalline components may be prepared in two or more reactors to yield desired property balance. In particular, aPP-g-scPP branch structures may be produced in-situ in two or more continuous solution reactors using mixed catalysts and propylene as the preferred feed. In one embodiment stereospecific bridged bis-indenyl group 4 catalysts can be selected to produce semicrystalline PP macromonomers. (All references to the Periodic Table of the Elements are to the Table published in Chemical and Engineering News, 63(5), 27, 1985.) A bridged mono-cyclopentadienyl heteroatom group 4 catalyst can be used to build amorphous PP (aPP) backbone while simultaneously incorporating some of the semi-crystalline macromonomers (scPP). This is believed to produce a aPP-g-scPP structure where the “-g-” indicates that the polymer types are at least partially grafted. By selecting the catalysts, the polymerization reaction conditions, and/or by introducing a diene modifier, the amorphous and crystalline components can be linked together to produce various branch-block structures. To effectively incorporate into a growing chain, a macromonomer with vinyl end group is preferred. Other types of chain end unsaturations (vinylene and vinylidene) can also be used. While not wishing to be bound by theory, branch-block copolymer is believed to comprise an amorphous backbone having crystalline side chains originating from the scPP macromonomers and the sidechains are believed to be polypropylene macromonomers, which can be prepared under solution polymerization conditions with catalysts suitable for preparing either of isotactic or syndiotactic polypropylene.
A preferred reaction process to produce polypropylene macromonomers having high levels of terminal vinyl unsaturation is described in U.S. Pat. No. 6,117,962. Typically used catalysts are stereorigid, chiral or asymmetric, bridged metallocenes. See, for example, U.S. Pat. No. 4,892,851, U.S. Pat. No. 5,017,714, U.S. Pat. No. 5,132,281, U.S. Pat. No. 5,296,434, U.S. Pat. No. 5,278,264, U.S. Pat. No. 5,304,614, U.S. Pat. No. 5,510,502, WO-A-(PCT/US92/10066) WO-A-93/19103, EP-A2-0 577 581, EP-A1-0 578 838, and academic literature “The Influence of Aromatic Substituents on the Polymerization Behavior of Bridged Zirconocene Catalysts”, Spaleck, W., el al, Organometallics 1994, 13, 954–963, and “ansa-Zirconocene Polymerization Catalysts with Annelated Ring Ligands-Effects on Catalytic Activity and Polymer Chain Lengths”, Brinzinger, H., et al, Organometallics 1994, 13, 964–970, and documents referred to therein.
In some embodiments, the first catalyst which comprises a stereorigid transition metal pre-catalyst compound used to produce the semi-crystalline polypropylene macromonomers of the present invention is selected from the group consisting of racemic bridged bis(indenyl) zirconocenes or hafnocenes. In a another embodiment, the transition metal pre-catalyst compound is a rac-dimethylsilyl-bridged bis(indenyl) zirconocene or hafnocene. In another embodiment, the transition metal pre-catalyst compound is rac-dimethylsilyl bis(2-methyl-4-phenylindenyl)zirconium or hafnium dichloride or dimethyl. In another preferred embodiment, the transition metal catalyst is a rac-dimethylsilyl-bridged bis(indenyl)hafnocene such as rac-dimethylsilyl bis(indenyl)hafnium dimethyl or dichloride.
It is believed that the fraction of branch-block and the level of branching depend on the availability of macromonomers with unsaturated chain end and macromonomer incorporation capability of the specific catalyst. To increase the population of aPP-g-scPP branch-block composition, one typically operates within a process window that favors macromonomer production and insertion. Such conditions have been described in U.S. Pat. No. 6,117,962 and the journal article by W. Weng et. al, Macromol. Rapid Commun., 2000, 21, 1103–1107 and are further illustrated by the examples therein.
It is also believed that the higher the population of vinyl terminated scPP macromonomers the higher the probability of getting them incorporated into aPP backbone and therefore the higher the branch-block population.
To further increase the population of macromonomers having vinyl chain ends diolefin monomers can be introduced into the reaction medium. The resultant product is typically a blend comprised of isotactic polypropylene segments, atactic polypropylene segments, and increased population of branch-block species resulting from the additional couplings brought about by the diolefin crosslinking agent.
Crosslinking typically refers to the connection of two polymer segments by incorporation of each double bond of a diolefin monomer into two different polymer segments. The polymer segments so connected can be the same or different, with respect to their crystallinity. Three or more polymer segments may also be connected via incorporation of two or more diolefins in on polymer segment into two other polymer segments.
A consideration for selection of the monomer, or combinations of monomers, is that, both crystalline and amorphous polymer segments can be formed with the selection of two or more different catalyst systems. In some embodiments it is further desired that the level of incorporation of the diolefin monomer, if present, into the crystalline segments be limited to an amount that will not substantially alter its crystallinity. The diolefin coupling agent is typically kept minimum to insure the overall composition has a viscosity of 8000 mPa·s or less for some adhesive applications.
As mentioned above, to increase the population of aPP-g-scPP branch-block composition, one typically operates within a process window that favors macromonomer production and insertion. Favorablve conditions include:
1. High concentration of catalyst producing the semi-crystalline vinyl terminated macromonomers, and or
2. Adjusting the Al/metal ratio; and or
3. High operating temperature; and or
4. Catalyst structure that has a high affility for macromonomer incorporation; and or
5. Relatively long residence time; and or
6. High monomer conversion (monomer starvation condition enhances the insertion of macromonomer); and or
7. Addition of modifier (diene) to enhance the population of vinyl terminated macromonomers.
Another method of enhancing aPP-g-scPP branch block compositions is to add in a chain transfer agent that transfers a vinyl group to the end of the polymer chain while deactivating the catalyst. Such chain transfer agents include, but are not limited to, vinyl chloride, vinyl fluoride, vinyl bromide. In the process, the catalyst is reactivated by the presence of an aluminum alkyl activator such as an alumoxane (typically methylalumoxane).
Similarly, melting and crystallization characteristics can be controlled through catalyst selection, comonomer addition and changes in process conditions such as temperature and catalyst ratio if more than one catalyst is used.
Catalyst Compounds
Any catalyst compound that can produce the desired polymer species (i.e. a polymer having an Mw of 100,000 or less and a heat of fusion of 70 J/g or less, or a polymer having an Mw of 100,000 or less and a crystallinity of 20% or more) may be used in the practice of this invention. In the description herein the transition metal compound may be described as a catalyst precursor, a pre-catalyst compound or a catalyst compound, and these terms are used interchangeably. A catalyst system is combination of a catalyst precursor and an activator.
Catalyst Compounds and Selection
Any pre-catalyst compound (catalyst precursor compound) that can produce the desired polymer species (i.e. a polymer having an Mw of 100,000 or less and crystallinity of 5% or less, or a polymer having an Mw of 100,000 or less and a crystallinity of 20% or more) may be used in the practice of this invention. Pre-catalyst compounds which may be utilized in the process of the invention include metallocene transition metal compounds (containing one, two, or three cyclopentadienyl ligands per metal atom), non-metallocene early transition metal compounds (including those with amide and/or phenoxide type ligands), non-metallocene late transition metal compounds (including those with diimine or diiminepyridyl ligands), and other transition metal compounds.
Generally, bulky ligand metallocene compounds (pre-catalysts) useful in this invention include half and full sandwich compounds having one or more bulky ligands bonded to at least one metal atom. Typical bulky ligand metallocene compounds are generally described as containing one or more bulky ligand(s) and one or more leaving group(s) bonded to at least one metal atom. The bulky ligands are generally represented by one or more open, acyclic, or fused ring(s) or ring system(s) or a combination thereof. These bulky ligands, preferably the ring(s) or ring system(s) are typically composed of atoms selected from Groups 13 to 16 atoms of the Periodic Table of Elements, preferably the atoms are selected from the group consisting of carbon, nitrogen, oxygen, silicon, sulfur, phosphorous, germanium, boron and aluminum or a combination thereof. Most preferably, the ring(s) or ring system(s) are composed of carbon atoms such as but not limited to those cyclopentadienyl ligands or cyclopentadienyl-type ligand structures or other similar functioning ligand structure such as a pentadienyl, a cyclooctatetraendiyl, a cyclobutadienyl, or a substituted allyl ligand. Other ligands that can function similarly to a cyclopentadienyl-type ligand include amides, phosphides, imines, phosphinimines, amidinates, and ortho-substituted phenoxides. The metal atom is preferably selected from Groups 3 through 15 and or lanthanide or actinide series of the Periodic Table of Elements. Preferably the metal is a transition metal from Groups 3 through 12, more preferably Groups 4, 5 and 6, and most preferably the transition metal is from Group 4.
In one embodiment, the catalyst composition useful in the invention includes one or more bulky ligand metallocene catalyst compounds represented by the formula:

LALBMQ*n  (1)

where M is a metal atom from the Periodic Table of the Elements and may be a Group 3 to 12 metal or from the lanthanide or actinide series of the Periodic Table of Elements, preferably M is a Group 4, 5 or 6 transition metal, more preferably M is a Group 4 transition metal, even more preferably M is zirconium, hafnium or titanium. The bulky ligands, LA and LB, are open, acyclic or fused ring(s) or ring system(s) and are any ancillary ligand system, including unsubstituted or substituted, cyclopentadienyl ligands or cyclopentadienyl-type ligands, heteroatom substituted and/or heteroatom containing cyclopentadienyl-type ligands. Non-limiting examples of bulky ligands include cyclopentadienyl ligands, cyclopentaphenanthreneyl ligands, indenyl ligands, benzindenyl ligands, fluorenyl ligands, dibenzo[b,h]fluorenyl ligands, benzo[b]fluorenyl ligands, cyclooctatetraendiyl ligands, cyclopentacyclododecene ligands, azenyl ligands, azulene ligands, pentalene ligands, phosphoyl ligands, phosphinimine (WO 99/40125), pyrrolyl ligands, pyrozolyl ligands, carbazolyl ligands, boratobenzene ligands and the like, including hydrogenated versions thereof, for example tetrahydroindenyl ligands. In one embodiment, LA and LB may be any other ligand structure capable of π-bonding to M. In yet another embodiment, the atomic molecular weight (MW) of LA or LB exceeds 60 a.m.u., preferably greater than 65 a.m.u. In another embodiment, LA and LB may comprise one or more heteroatoms, for example, nitrogen, silicon, boron, germanium, sulfur and phosphorous, in combination with carbon atoms to form an open, acyclic, or preferably a fused, ring or ring system, for example, a hetero-cyclopentadienyl ancillary ligand. Other LA and LB bulky ligands include but are not limited to bulky amides, phosphides, alkoxides, aryloxides, imides, carbolides, borollides, porphyrins, phthalocyanines, corrins and other polyazomacrocycles. Independently, each LA and LB may be the same or different type of bulky ligand that is bonded to M. In one embodiment of Formula 1 only one of either LA or LB is present.

Independently, each LA and LB may be unsubstituted or substituted with a combination of substituent groups R*. Non-limiting examples of substituent groups R* include one or more from the group selected from hydrogen, or linear or branched alkyl radicals, alkenyl radicals, alkynyl radicals, cycloalkyl radicals, aryl radicals, acyl radicals, aroyl radicals, alkoxy radicals, aryloxy radicals, alkylthio radicals, dialkylamino radicals, alkoxycarbonyl radicals, aryloxycarbonyl radicals, carbomoyl radicals, alkyl- or dialkyl-carbamoyl radicals, acyloxy radicals, acylamino radicals, aroylamino radicals or combination thereof. In a preferred embodiment, substituent groups R* have up to 50 non-hydrogen atoms, preferably from 1 to 30 carbon, that can also be substituted with halogens or heteroatoms or the like. Non-limiting examples of alkyl substituents R* include methyl, ethyl, propyl, butyl, pentyl, hexyl, cyclopentyl, cyclohexyl, benzyl or phenyl groups and the like, including all their isomers, for example tertiary butyl, isopropyl, and the like. Other hydrocarbyl radicals include fluoromethyl, fluoroethyl, difluoroethyl, iodopropyl, bromohexyl, chlorobenzyl and hydrocarbyl substituted organometalloid radicals including trimethylsilyl, trimethylgermyl, methyldiethylsilyl and the like; and halocarbyl-substituted organometalloid radicals including tris(trifluoromethyl)silyl, methyl-bis(difluoromethyl)silyl, bromomethyldimethylgermyl and the like; and disubstituted boron radicals including dimethylboron for example; and disubstituted pnictogen radicals including dimethylamine, dimethylphosphine, diphenylamine, methylphenylphosphine, chalcogen radicals including methoxy, ethoxy, propoxy, phenoxy, methylsulfide and ethylsulfide. Non-hydrogen substituents R* include the atoms carbon, silicon, boron, aluminum, nitrogen, phosphorous, oxygen, tin, sulfur, germanium and the like, including olefins such as but not limited to olefinically unsaturated substituents including vinyl-terminated ligands, for example but-3-enyl, prop-2-enyl, hex-5-enyl and the like. Also, at least two R* groups, preferably two adjacent R groups, are joined to form a ring structure having from 3 to 30 atoms selected from carbon, nitrogen, oxygen, phosphorous, silicon, germanium, aluminum, boron or a combination thereof. Also, a substituent group, R*, may also be a diradical bonded to L at one end and forming a carbon sigma bond to the metal M. Other ligands may be bonded to the metal M, such as at least one leaving group Q*. In one embodiment, Q* is a monoanionic labile ligand having a sigma-bond to M. Depending on the oxidation state of the metal, the value for n is 0, 1 or 2 such that Formula 1 above represents a neutral bulky ligand metallocene catalyst compound. Non-limiting examples of Q* ligands include weak bases such as amines, phosphines, ethers, carboxylates, dienes, hydrocarbyl radicals having from 1 to 20 carbon atoms, hydrides or halogens and the like or a combination thereof. In another embodiment, two or more Q*'s form a part of a fused ring or ring system. Other examples of Q* ligands include those substituents for R* as described above and including cyclobutyl, cyclohexyl, heptyl, tolyl, trifluoromethyl, tetramethylene (both Q*), pentamethylene (both Q*), methylidene (both Q*), methoxy, ethoxy, propoxy, phenoxy, bis(N-methylanilide), dimethylamide, dimethylphosphide radicals and the like.
In another embodiment, the catalyst composition useful in the invention may include one or more bulky ligand metallocene catalyst compounds where LA and LB of Formula 1 are bridged to each other by at least one bridging group, A*, as represented by Formula 2.

LAA*LBMQ*n  (2)

The compounds of Formula 2 are known as bridged, bulky ligand metallocene catalyst compounds. LA, LB, M, Q* and n are as defined above. Non-limiting examples of bridging group A* include bridging groups containing at least one Group 13 to 16 atom, often referred to as a divalent moiety such as but not limited to at least one of a carbon, oxygen, nitrogen, silicon, aluminum, boron, germanium and tin atom or a combination thereof. Preferably bridging group A* contains a carbon, silicon or germanium atom, most preferably A* contains at least one silicon atom or at least one carbon atom. The bridging group A* may also contain substituent groups R* as defined above including halogens and iron. Non-limiting examples of bridging group A* may be represented by R′2C, R′2CCR′2, R′2Si, R′2SiCR′2, R′2SiSiR′2 R′2Ge, R′P, R′N, R′B where R′ is independently, a radical group which is hydride, hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, hydrocarbyl-substituted organometalloid, halocarbyl-substituted organometalloid, disubstituted boron, disubstituted pnictogen, substituted chalcogen, or halogen or two or more R′ may be joined to form a ring or ring system. In one embodiment, the bridged, bulky ligand metallocene catalyst compounds of Formula 2 have two or more bridging groups A* (EP 664 301 B1).

In another embodiment, the bulky ligand metallocene catalyst compounds are those where the R* substituents on the bulky ligands LA and LB of Formulas 1 and 2 are substituted with the same or different number of substituents on each of the bulky ligands. In another embodiment, the bulky ligands LA and LB of Formulas 1 and 2 are different from each other.
Other bulky ligand metallocene catalyst compounds and catalyst systems useful in the invention may include those described in U.S. Pat. Nos. 5,064,802, 5,145,819, 5,149,819, 5,243,001, 5,239,022, 5,276,208, 5,296,434, 5,321,106, 5,329,031, 5,304,614, 5,677,401, 5,723,398, 5,753,578, 5,854,363, 5,856,547 5,858,903, 5,859,158, 5,900,517 and 5,939,503 and PCT publications WO 93/08221, WO 93/08199, WO 95/07140, WO 98/11144, WO 98/41530, WO 98/41529, WO 98/46650, WO 99/02540 and WO 99/14221 and European publications EP-A-0 578 838, EP-A-0 638 595, EP-B-0 513 380, EP-A1-0 816 372, EP-A2-0 839 834, EP-B1-0 632 819, EP-B1-0 748 821 and EP-B1-0 757 996, all of which are herein fully incorporated by reference.
In another embodiment, the catalyst compositions useful in the invention may include bridged heteroatom, mono-bulky ligand metallocene compounds. These types of catalysts and catalyst systems are described in, for example, PCT publication WO 92/00333, WO 94/07928, WO 91/04257, WO 94/03506, WO96/00244, WO 97/15602 and WO 99/20637 and U.S. Pat. Nos. 5,057,475, 5,096,867, 5,055,438, 5,198,401, 5,227,440 and 5,264,405 and European publication EP-A-0 420 436, all of which are herein fully incorporated by reference.
In another embodiment, the catalyst composition useful in the invention includes one or more bulky ligand metallocene catalyst compounds represented by Formula 3:

LCA*J*MQ*n  (3)

where M is a Group 3 to 16 metal atom or a metal selected from the Group of actinides and lanthanides of the Periodic Table of Elements, preferably M is a Group 3 to 12 transition metal, and more preferably M is a Group 4, 5 or 6 transition metal, and most preferably M is a Group 4 transition metal in any oxidation state, and is especially titanium; LC is a substituted or unsubstituted bulky ligand bonded to M; J* is bonded to M; A* is bonded to J* and LC; J* is a heteroatom ancillary ligand; and A* is a bridging group; Q* is a univalent anionic ligand; and n is the integer 0, 1 or 2. In Formula 3 above, LC, A* and J* form a fused ring system. In an embodiment, LC of Formula 3 is as defined above for LA. A*, M and Q* of Formula 3 are as defined above in Formula 1. In Formula 3, J* is a heteroatom containing ligand in which J* is an element with a coordination number of three from Group 15 or an element with a coordination number of two from Group 16 of the Periodic Table of Elements. Preferably J* contains a nitrogen, phosphorus, oxygen or sulfur atom with nitrogen being most preferred. In an embodiment of the invention, the bulky ligand metallocene catalyst compounds are heterocyclic ligand complexes where the bulky ligands, the ring(s) or ring system(s), include one or more heteroatoms or a combination thereof. Non-limiting examples of heteroatoms include a Group 13 to 16 element, preferably nitrogen, boron, sulfur, oxygen, aluminum, silicon, phosphorous and tin. Examples of these bulky ligand metallocene catalyst compounds are described in WO 96/33202, WO 96/34021, WO 97/17379 and WO 98/22486 and EP-A1-0 874 005 and U.S. Pat. Nos. 5,637,660, 5,539,124, 5,554,775, 5,756,611, 5,233,049, 5,744,417, and 5,856,258 all of which are herein incorporated by reference.

In one embodiment, the bulky ligand metallocene compounds (pre-catalysts) are those complexes based on bidentate ligands containing pyridine or quinoline moieties, such as those described in U.S. application Ser. No. 09/103,620 filed Jun. 23, 1998, which is herein incorporated by reference. In another embodiment, the bulky ligand metallocene catalyst compounds are those described in PCT publications WO 99/01481 and WO 98/42664, which are fully incorporated herein by reference.
In another embodiment, the bulky ligand metallocene catalyst compound is a complex of a metal, preferably a transition metal, a bulky ligand, preferably a substituted or unsubstituted pi-bonded ligand, and one or more heteroallyl moieties, such as those described in U.S. Pat. Nos. 5,527,752 and 5,747,406 and EP-B1-0 735 057, all of which are herein fully incorporated by reference.
In another embodiment, the bulky ligand metallocene catalyst compounds are those described in PCT publications WO 99/01481 and WO 98/42664, which are fully incorporated herein by reference.
Useful Group 6 bulky ligand metallocene catalyst systems are described in U.S. Pat. No. 5,942,462, which is incorporated herein by reference.
Still other useful catalysts include those multinuclear metallocene catalysts as described in WO 99/20665 and U.S. Pat. No. 6,010,794, and transition metal metaaracyle structures described in EP 0 969 101 A2, which are herein incorporated herein by reference. Other metallocene catalysts include those described in EP 0 950 667 A1, double cross-linked metallocene catalysts (EP 0 970 074 A1), tethered metallocenes (EP 970 963 A2) and those sulfonyl catalysts described in U.S. Pat. No. 6,008,394, which are incorporated herein by reference.
It is also contemplated that in one embodiment the bulky ligand metallocene catalysts, described above, include their structural or optical or enantiomeric isomers (meso and racemic isomers, for example see U.S. Pat. No. 5,852,143, incorporated herein by reference) and mixtures thereof.
It is further contemplated that any one of the bulky ligand metallocene catalyst compounds, described above, have at least one fluoride or fluorine containing leaving group as described in U.S. application Ser. No. 09/191,916 filed Nov. 13, 1998.
The Group 15 containing metal compounds utilized in the catalyst composition of the invention are prepared by methods known in the art, such as those disclosed in EP 0 893 454 A1, U.S. Pat. No. 5,889,128 and the references cited in U.S. Pat. No. 5,889,128 which are all herein incorporated by reference. U.S. application Ser. No. 09/312,878, filed May 17, 1999, discloses a gas or slurry phase polymerization process using a supported bisamide catalyst, which is also incorporated herein by reference. For additional information of Group 15 containing metal compounds, please see Mitsui Chemicals, Inc. in EP 0 893 454 A1 which discloses transition metal amides combined with activators to polymerize olefins.
In one embodiment the Group 15 containing metal compound is allowed to age prior to use as a polymerization. It has been noted on at least one occasion that one such catalyst compound (aged at least 48 hours) performed better than a newly prepared catalyst compound.
It is further contemplated that bis-amide based pre-catalysts may be used. Exemplary compounds include those described in the patent literature. International patent publications WO 96/23010, WO 97/48735 and Gibson, et al., Chem. Comm., pp. 849–850 (1998), which disclose diimine-based ligands for Group-8–10 compounds that undergo ionic activation and polymerize olefins. Polymerization catalyst systems from Group-5–10 metals, in which the active center is highly oxidized and stabilized by low-coordination-number, polyanionic, ligand systems, are described in U.S. Pat. No. 5,502,124 and its divisional U.S. Pat. No. 5,504,049. See also the Group-5 organometallic catalyst compounds of U.S. Pat. No. 5,851,945 and the tridentate-ligand-containing, Group-5–10, organometallic catalysts of U.S. Pat. No. 6,294,495. Group-11 catalyst precursor compounds, activatable with ionizing cocatalysts, useful for olefin and vinylic polar molecules are described in WO 99/30822.
Other useful catalyst compounds are those Group 5 and 6 metal imido complexes described in EP-A2-0 816 384 and U.S. Pat. No. 5,851,945, which is incorporated herein by reference. In addition, metallocene catalysts include bridged bis(arylamido) Group 4 compounds described by D. H. McConville, et al., in Organometallics 1995, 14, 5478–5480, which is herein incorporated by reference. In addition, bridged bis(amido) catalyst compounds are described in WO 96/27439, which is herein incorporated by reference. Other useful catalysts are described as bis(hydroxy aromatic nitrogen ligands) in U.S. Pat. No. 5,852,146, which is incorporated herein by reference. Other useful catalysts containing one or more Group 15 atoms include those described in WO 98/46651, which is herein incorporated herein by reference.
U.S. Pat. No. 5,318,935 describes bridged and unbridged, bisamido catalyst compounds of Group-4 metals capable of α-olefins polymerization. Bridged bi(arylamido)-Group-4 compounds for olefin polymerization are described by D. H. McConville, et al., in Organometallics 1995, 14, 5478–5480. This reference presents synthetic methods and compound characterizations. Further work appearing in D. H. McConville, et al, Macromolecules 1996, 29, 5241–5243, describes bridged bis(arylamido)-Group-4 compounds that are polymerization catalysts for 1-hexene. Additional invention-suitable transition metal compounds include those described in WO 96/40805. Cationic Group-3- or Lanthanide-metal olefin polymerization complexes are disclosed in copending U.S. application Ser. No. 09/408,050, filed 29 Sep. 1999. A monoanionic bidentate ligand and two monoanionic ligands stabilize those catalyst precursors, which can be activated with this invention's ionic cocatalysts.
The literature describes many additional suitable catalyst-precursor compounds. Compounds that contain abstractable ligands or that can be alkylated to contain abstractable ligands suit this invention. See, for instance, V. C. Gibson, et al; “The Search for New-Generation Olefin Polymerization Catalysts: Life Beyond Metallocenes”, Angew. Chem. Int. Ed., 38, 428–447 (1999).
This invention may also be practiced with the catalysts containing phenoxide ligands such as those disclosed in EP 0 874 005 A1, which in incorporated by reference herein.
In another embodiment, conventional-type transition metal catalysts may be used in the practice of this invention. Conventional-type transition metal catalysts are those traditional Ziegler-Natta, vanadium and Phillips-type catalysts well known in the art. Such as, for example Ziegler-Natta catalysts as described in Ziegler-Natta Catalysts and Polymerizations, John Boor, Academic Press, New York, 1979. Examples of conventional-type transition metal catalysts are also discussed in U.S. Pat. Nos. 4,115,639, 4,077,904, 4,482,687, 4,564,605, 4,721,763, 4,879,359 and 4,960,741, all of which are herein fully incorporated by reference. The conventional-type transition metal catalyst compounds that may be used in the present invention include transition metal compounds from Groups 3 to 17, preferably 4 to 12, more preferably 4 to 6 of the Periodic Table of Elements.
Preferred conventional-type transition metal catalysts may be represented by the formula: MRx, where M is a metal from Groups 3 to 17, preferably Group 4 to 6, more preferably Group 4, most preferably titanium; R is a halogen or a hydrocarbyloxy group; and x is the oxidation state of the metal M. Non-limiting examples of R include alkoxy, phenoxy, bromide, chloride and fluoride. Non-limiting examples of conventional-type transition metal catalysts where M is titanium include TiCl4, TiBr4, Ti(OC2H5)3Cl, Ti(OC2H5)Cl3, Ti(OC4H9)3Cl, Ti(OC3H7)2Cl2, Ti(OC2H5)2Br2, TiCl3.1⁄3AlCl3 and Ti(OC12H25)Cl3. Conventional-type transition metal catalyst compounds based on magnesium/titanium electron-donor complexes that are useful in the invention are described in, for example, U.S. Pat. Nos. 4,302,565 and 4,302,566, which are herein fully incorporate by reference. The MgTiCl6 (ethyl acetate)4 derivative is particularly preferred.
British Patent Application 2,105,355 and U.S. Pat. No. 5,317,036, herein incorporated by reference, describes various conventional-type vanadium catalyst compounds. Non-limiting examples of conventional-type vanadium catalyst compounds include vanadyl trihalide, alkoxy halides and alkoxides such as VOCl3, VOCl2(OBu) where Bu=butyl and VO(OC2H5)3; vanadium tetra-halide and vanadium alkoxy halides such as VCl4 and VCl3(OBu); vanadium and vanadyl acetyl acetonates and chloroacetyl acetonates such as V(AcAc)3 and VOCl2(AcAc) where (AcAc) is an acetyl acetonate. The preferred conventional-type vanadium catalyst compounds are VOCl3, VCl4 and VOCl2—OR where R is a hydrocarbon radical, preferably a C1 to C10 aliphatic or aromatic hydrocarbon radical such as ethyl, phenyl, isopropyl, butyl, propyl, n-butyl, iso-butyl, tertiary-butyl, hexyl, cyclohexyl, naphthyl, etc., and vanadium acetyl acetonates.
Conventional-type chromium catalyst compounds, often referred to as Phillips-type catalysts, suitable for use in the present invention include CrO3, chromocene, silyl chromate, chromyl chloride (CrO2Cl2), chromium-2-ethyl-hexanoate, chromium acetylacetonate (Cr(AcAc)3), and the like. Non-limiting examples are disclosed in U.S. Pat. Nos. 3,709,853, 3,709,954, 3,231,550, 3,242,099 and 4,077,904, which are herein fully incorporated by reference.
Still other conventional-type transition metal catalyst compounds and catalyst systems suitable for use in the present invention are disclosed in U.S. Pat. Nos. 4,124,532, 4,302,565, 4,302,566, 4,376,062, 4,379,758, 5,066,737, 5,763,723, 5,849,655, 5,852,144, 5,854,164 and 5,869,585 and published EP-A2 0 416 815 A2 and EP-A1 0 420 436, which are all herein incorporated by reference.
Other catalysts may include cationic catalysts such as AlCl3, and other cobalt, iron, nickel and palladium catalysts well known in the art. See for example U.S. Pat. Nos. 3,487,112, 4,472,559, 4,182,814 and 4,689,437, all of which are incorporated herein by reference.
It is also contemplated that other catalysts can be combined with the catalyst compounds in the catalyst composition useful in the invention. For example, see U.S. Pat. Nos. 4,937,299, 4,935,474, 5,281,679, 5,359,015, 5,470,811, and 5,719,241 all of which are herein fully incorporated herein reference.
It is further contemplated that one or more of the catalyst compounds described above or catalyst systems may be used in combination with one or more conventional catalyst compounds or catalyst systems. Non-limiting examples of mixed catalysts and catalyst systems are described in U.S. Pat. Nos. 4,159,965, 4,325,837, 4,701,432, 5,124,418, 5,077,255, 5,183,867, 5,391,660, 5,395,810, 5,691,264, 5,723,399 and 5,767,031 and PCT Publication WO 96/23010 published Aug. 1, 1996, all of which are herein fully incorporated by reference.
Preferred metallocene catalysts used in this invention can more specifically be represented by one of the following general formulae (all references to Groups being the new Group notation of the Period Table of the Elements as described by Chemical and Engineering News, 63(5), 27, 1985):

[{[(A-Cp)MX1]+}d]{[B′]d−}  (4)

[{[(A-Cp)MX1L]+}d]{[B′]d−}  (5)





wherein:

    (A-Cp) is either (Cp), (Cp*) or Cp-A′-Cp*; Cp and Cp* are the same or different cyclopentadienyl rings substituted with from zero to five substituent groups S′′, each substituent group S′′ being, independently, a radical group which is a hydrocarbyl, substituted-hydrocarbyl, halocarbyl, substituted-halocarbyl, hydrocarbyl-substituted organometalloid, halocarbyl-substituted organometalloid, disubstituted boron, disubstituted pnictogen, substituted chalcogen or halogen radicals, or Cp and Cp* are cyclopentadienyl rings in which any two adjacent S′′ groups are joined forming a C4 to C20 ring to give a saturated or unsaturated polycyclic cyclopentadienyl ligand; Cp and Cp* may also have one or two carbon atoms within the ring replaced by a Group 15 or 16 element especially, S, O, N or P;
    A′ is a bridging group;
    (C5H5-y-xS′′x) is a cyclopentadienyl ring substituted with from zero to five S′′ radicals as defined above;
    x is from 0 to 5 denoting the degree of substitution;
    M is titanium, zirconium or hafnium;
    X1 is a hydride radical, hydrocarbyl radical, substituted-hydrocarbyl radical, hydrocarbyl-substituted organometalloid radical or halocarbyl-substituted organometalloid radical which radical may optionally be covalently bonded to both or either M and L or L′ or all or any M, S′′ or S′, and provided that X1 is not a substituted or unsubstituted cyclopentadienyl ring;
    (JS′z-1-y) is a heteroatom ligand in which J is an element from Group 15 of the Periodic Table of Elements with a coordination number of 3 or an element from Group 16 with a coordination number of 2; S′ is a radical group which is a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, hydrocarbyl-substituted organometalloid, or halocarbyl-substituted organometalloid; and z is the coordination number of the element J;
    y is 0 or 1;
    L is an olefin, diolefin or aryne ligand. L′ is the same as L, and can additionally be an amine, phosphine, ether, or sulfide ligand, or any other neutral Lewis base; L′ can also be a second transition metal compound of the same type such that the two metal center M and M* are bridged by X1 and X′1, wherein M* has the same meaning as M, X′1, X2 and X′2 have the same meaning as X1, where such dimeric compounds which are precursors to the cationic portion of the catalyst are represented by the formula:






wherein

    w is an integer from 0 to 3;
    B′ is a chemically stable, non-nucleophilic anionic complex having a molecular diameter about or greater than 4 Angstroms or an anionic Lewis-acid activator resulting from the reaction of a Lewis-acid activator with the precursor to the cationic portion of the catalyst system described in formulae 1–4. When B′ is a Lewis-acid activator, X1 can also be an alkyl group donated by the Lewis-acid activator; and
    d is an integer representing the charge of B′.


The catalysts are preferably prepared by combining at least two components. In one preferred method, the first component is a cyclopentadienyl derivative of a Group 4 metal compound containing at least one ligand which will combine with the second component or at least a portion thereof such as a cation portion thereof. The second component is an ion-exchange compound comprising a cation which will irreversibly react with at least one ligand contained in said Group 4 metal compound (first component) and a non-coordinating anion which is either a single coordination complex comprising a plurality of lipophilic radicals covalently coordinated to and shielding a central formally charge-bearing metal or metalloid atom or an anion comprising a plurality of boron atoms such as polyhedral boranes, carboranes and metallacarboranes.
In general, suitable anions for the second component may be any stable and bulky anionic complex having the following molecular attributes: 1) the anion should have a molecular diameter greater than 4 Angstroms; 2) the anion should form stable ammonium salts; 3) the negative charge on the anion should be delocalized over the framework of the anion or be localized within the core of the anion; 4) the anion should be a relatively poor nucleophile; and 5) the anion should not be a powerful reducing or oxidizing agent. Anions meeting these criteria—such as polynuclear boranes, carboranes, metallacarboranes, polyoxoanions and anionic coordination complexes are well described in the chemical literature.
The cation portion of the second component may comprise Bronsted acids such as protons or protonated Lewis bases or may comprise Lewis acids such as ferricinum, tropylium, triphenylcarbenium or silver cations.
In another preferred method, the second component is a Lewis-acid complex which will react with at least one ligand of the first component, thereby forming an ionic species described in formulae 4–6 with the ligand abstracted from the first component now bound to the second component. Alumoxanes and especially methylalumoxane, the product formed from the reaction of trimethylaluminum in an aliphatic or aromatic hydrocarbon with stoichiometric quantities of water, are particularly preferred Lewis-acid second components. Modified alumoxanes are also preferred. Alumoxanes are well known in the art and methods for their preparation are illustrated by U.S. Pat. Nos. 4,542,199; 4,544,762; 5,015,749; and 5,041,585. A technique for preparing modified alumoxanes has been disclosed in U.S. Pat. No. 5,041,584, in EPA 0 516 476, and in EPA 0 561 476, which are incorporated by reference herein.
Upon combination of the first and second components, the second component reacts with one of the ligands of the first component, thereby generating an anion pair consisting of a Group 4 metal cation and the aforementioned anion, which anion is compatible with and non-coordinating towards the Group 4 metal cation formed from the first component. The anion of the second compound must be capable of stabilizing the Group 4 metal cation's ability to function as a catalyst and must be sufficiently labile to permit displacement by an olefin, diolefin or an acetylenically unsaturated monomer during polymerization. The catalysts of this invention may be supported. U.S. Pat. No. 4,808,561, issued Feb. 28, 1989; U.S. Pat. No. 4,897,455 issued Jan. 3, 1990; U.S. Pat. No. 5,057,475 issued Oct. 15, 1991; U.S. patent application Ser. No. 459,921 (published as PCT International publication WO 91/09882), Canadian Patent 1,268,753, U.S. Pat. No. 5,240,894 and WO 94 03506 disclose such supported catalysts and the methods to produce such and are herein incorporated by reference.
The Group 4 metal compounds; i.e., titanium, zirconium and hafnium metallocene compounds, useful as first compounds (pre-catalysts) in the preparation of the preferred metallocene catalysts of this invention are cyclopentadienyl derivatives of titanium, zirconium and hafnium. In general, useful titanocenes, zirconocenes and hafnocenes may be represented by the following general formulae:

(A-Cp)MX1X2  (8)

(A-Cp)ML  (9)





wherein:

    (A-Cp) is either (Cp)(Cp*) or Cp-A′-Cp*; Cp and Cp* are the same or different cyclopentadienyl rings substituted with from zero to five substituent groups S′′, each substituent group S′′ being, independently, a radical group which is a hydrocarbyl, substituted-hydrocarbyl, halocarbyl, substituted-halocarbyl, hydrocarbyl-substituted organometalloid, halocarbyl-substituted organometalloid, disubstituted boron, disubstituted pnictogen, substituted chalcogen or halogen radicals, or Cp and Cp* are cyclopentadienyl rings in which any two adjacent S′′ groups are joined forming a C4 to C20 ring to give a saturated or unsaturated polycyclic cyclopentadienyl ligand;
    A′ is a bridging group;
    y is 0 or 1;
    (C5H5-y-xS′′x) is a cyclopentadienyl ring substituted with from zero to five S′′ radicals as defined above;
    x is from 0 to 5 denoting the degree of substitution;
    (JS′z-1-y) is a heteroatom ligand in which J is an element from Group 15 of the Periodic Table of Elements with a coordination number of 3 or an element from Group 16 with a coordination number of 2, S′ is a radical group which is a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, hydrocarbyl-substituted organometalloid, or halocarbyl-substituted organometalloid; and z is the coordination number of the element J;
    L is an olefin, diolefin or aryne ligand. L′ is the same as L and can additionally be an amine, phosphine, ether, or sulfide ligand, or any other neutral Lewis base; L′ can also be a second transition metal compound of the same type such that the two metal centers M and M* are bridged by X1 and X′1, wherein M* has the same meaning as M, X′1 has the same meaning as X1 and X′2 has the same meaning as X2 where such dimeric compounds which are precursors to the cationic portion of the catalyst are represented by formula 7 above;
    w is an integer from 0 to 3; and
    X1 and X2 are, independently, hydride radicals, hydrocarbyl radicals, substituted hydrocarbyl radicals, halocarbyl radicals, substituted halocarbyl radicals, and hydrocarbyl- and halocarbyl-substituted organometalloid radicals, substituted pnictogen radicals, or substituted chalcogen radicals; or X1 and X2 are joined and bound to the metal atom to form a metallacycle ring containing from about 3 to about 20 carbon atoms; or X1 and X2 together can be an olefin, diolefin or aryne ligand; or when Lewis-acid activators, such as methylalumoxane, which are capable of donating an X1 ligand as described above to the transition metal component are used, X1 and X2 may independently be a halogen, alkoxide, aryloxide, amide, phosphide or other univalent anionic ligand or both X1 and X2 can also be joined to form a anionic chelating ligand and with the proviso that X1 and X2 are not a substituted or unsubstituted cyclopentadienyl ring.


Table A depicts representative constituent moieties for the metallocene components of formulae 7–10. The list is for illustrative purposes only and should not be construed to be limiting in any way. A number of final components may be formed by permuting all possible combinations of the constituent moieties with each other. When hydrocarbyl radicals including alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, cycloalkynyl and aromatic radicals are disclosed in this application the term includes all isomers. For example, butyl includes n-butyl, 2-methylpropyl, 1-methylpropyl, tert-butyl, and cyclobutyl; pentyl includes n-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1-ethylpropyl, neopentyl, cyclopentyl and methylcyclobutyl; butenyl includes E and Z forms of 1-butenyl, 2-butenyl, 3-butenyl, 1-methyl-1-propenyl, 1-methyl-2-propenyl, 2-methyl-1-propenyl and 2-methyl-2-propenyl. This includes when a radical is bonded to another group, for example, propylcyclopentadienyl include n-propylcyclopentadienyl, isopropylcyclopentadienyl and cyclopropylcyclopentadienyl. In general, the ligands or groups illustrated in Table A include all isomeric forms. For example, dimethylcyclopentadienyl includes 1,2-dimethylcyclopentadienyl and 1,3-dimethylcyclopentadienyl; methylindenyl includes 1-methylindenyl, 2-methylindenyl, 3-methylindenyl, 4-methylindenyl, 5-methylindenyl, 6-methylindenyl and 7-methylindenyl; methylethylphenyl includes ortho-methylethylphenyl, meta-methylethylphenyl and para-methylethylphenyl. Examples of specific invention catalyst precursors take the following formula where some components are listed in Table A. To illustrate members of the transition metal component, select any combination of the species listed in Tables A. For nomenclature purposes, for the bridging group, A′, the words “silyl” and “silylene” are used interchangeably, and represent a diradical species. For the bridging group A′, “ethylene” refers to a 1,2-ethylene linkage and is distinguished from ethene-1,1-diyl. Thus, for the bridging group A′, “ethylene” and “1,2-ethylene” are used interchangeably. For compounds processing a bridging group, A′, the bridge position on the cyclopentadienyl-type ring is always considered the 1-position. Thus, for example, the use of “1-fluorenyl” is interchangeable with the use of “fluorenyl”
Illustrative compounds of the formula 8 type are:

    bis(cyclopentadienyl)hafnium dimethyl, ethylenebis(tetrahydroindenyl)zirconium dihidryde, bis(pentamethyl)zirconium diethyl, dimethylsilyl(1-fluorenyl)(cyclopentadienyl)titanium dichloride and the like.


Illustrative compounds of the formula 9 type are:

    bis(cyclopentadienyl)(1,3-butadiene)zirconium, bis(cyclopentadienyl)(2,3-dimethyl-1,3-butadiene)zirconium, bis(pentamethylcyclopentadienyl)(benzene)zirconium, bis(pentamethylcyclopentadienyl)titanium ethylene and the like.


Illustrative compounds of the formula 10 type are:

    dimethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)zirconium dichloride, ethylene(methylcyclopentadienyl)(phenylamido)titanium dimethyl, methylphenylsilyl(indenyl)(phenyphosphido)hafnium dihydride and (pentamethylcyclopentadienyl)(di-t-butylamido)hafnium dimethoxide.


The conditions under which complexes containing neutral Lewis base ligands such as ether or those which form dimeric compounds is determined by the steric bulk of the ligands about the metal center. For example, the t-butyl group in Me2Si(Me4C5)(N-t-Bu)ZrCl2 has greater steric requirements that the phenyl in Me2Si(Me4C5)(NPh)ZrCl2.Et2O thereby not permitting ether coordination in the former compound in its solid state. Similarly, due to the decreased steric bulk of the trimethylsilylcyclopentadienyl group in [Me2Si(Me3SiC5H3)(N-t-Bu)ZrCl2]2 versus that of the tetramethylcyclopentadienyl group in Me2Si(Me4C5)(N-t-Bu)ZrCl2, the former compound is dimeric and the latter is not.









TABLE A









A′



Dimethylsilylene



Diethylsilylene



Dipropylsilylene



Dibutylsilylene



dipentylsilylene



dihexylsilylene



diheptylsilylene



dioctylsilylene



dinonylsilylene



didecylsilylene



diundecylsilylene



didodecylsilylene



ditridecylsilylene



ditetradecylsilylene



dipentadecylsilylene



dihexadecylsilylene



diheptadecylsilylene



dioctadecylsilylene



dinonadecylsilylene



dieicosylsilylene



diheneicosylsilylene



didocosylsilylene



ditricosylsilylene



ditetracosylsilylene



dipentacosylsilylene



dihexacosylsilylene



diheptacosylsilylene



dioctacosylsilylene



dinonacosylsilylene



ditriacontylsilylene



dicyclohexylsilylene



dicyclopentylsilylene



dicycloheptylsilylene



dicyclooctylsilylene



dicyclodecylsilylene



dicyclododecylsilylene



dinapthylsilylene



diphenylsilylene



ditolylsilylene



dibenzylsilylene



diphenethylsilylene



di(butylphenethyl)silylene



methylethylsilylene



methylpropylsilylene



methylbutylsilylene



methylhexylsilylene



methylphenylsilylene



ethylphenylsilylene



ethylpropylsilylene



ethylbutylsilylene



propylphenylsilylene



dimethylgermylene



diethylgermylene



diphenylgermylene



methylphenylgermylene



cyclotetramethylenesilylene



cyclopentamethylenesilylene



cyclotrimethylenesilylene



cyclohexylazanediyl



butylazanediyl



methylazanediyl



phenylazanediyl



perfluorophenylazanediyl



methylphosphanediyl



ethylphosphanediyl



propylphosphanediyl



butylphosphanediyl



cyclohexylphosphanediyl



phenylphosphanediyl



methylboranediyl



phenylboranediyl



methylene



dimethylmethylene



diethylmethylene



dibutylmethylene



dipropylmethylene



diphenylmethylene



ditolylmethylene



di(butylphenyl)methylene



di(trimethylsilylphenyl)methylene



di(triethylsilylphenyl)methylene



dibenzylmethylene



cyclotetramethylenemethylene



cyclopentamethylenemethylene



ethylene



methylethylene



dimethylethylene



trimethylethylene



tetramethylethylene



cyclopentylene



cyclohexylene



cycloheptylene



cyclooctylene



propanediyl



methylpropanediyl



dimethylpropanediyl



trimethylpropanediyl



tetramethylpropanediyl



pentamethylpropanediyl



hexamethylpropanediyl



tetramethyldisiloxylene



vinylene



ethene-1,1-diyl



divinylsilylene



dipropenylsilylene



dibutenylsilylene



methylvinylsilylene



methylpropenylsilylene



methylbutenylsilylene



dimethylsilylmethylene



diphenylsilylmethylene



dimethylsilylethylene



diphenylsilylethylene



dimethylsilylpropylene



diphenylsilylpropylene



dimethylstannylene



diphenylstannylene



Cp, Cp*, CpR or (C5H5−y−xS′′x)



Cyclopentadienyl



methylcyclopentadienyl



Dimethylcyclopentadienyl



Trimethylcyclopentadienyl



Tetramethylcyclopentadienyl



Pentamethylcyclopentadienyl (no A′)



Ethylcyclopentadienyl



Diethylcyclopentadienyl



Propylcyclopentadienyl



Dipropylcyclopentadienyl



Butylcyclopentadienyl



Dibutylcyclopentadienyl



Pentylcyclopentadienyl



Dipentylcyclopentadienyl



Hexylcyclopentadienyl



Dihexylcyclopentadienyl



Heptylcyclopentadienyl



Diheptylcyclopentadienyl



Octylcyclopentadienyl



Dioctylcyclopentadienyl



Nonylcyclopentadienyl



Dinonylcyclopentadienyl



Decylcyclopentadienyl



Didecylcyclopentadienyl



Undecylcyclopentadienyl



Dodecylcyclopentadienyl



Tridecylcyclopentadienyl



Tetradecylcyclopentadienyl



Pentadecylcyclopentadienyl (no A′)



Hexadecylcyclopentadienyl



Heptadecylcyclopentadienyl



Octadecylcyclopentadienyl



Nonadecylcyclopentadienyl



Eicosylcyclopentadienyl



Heneicosylcyclopentadienyl



Docosylcyclopentadienyl



Tricosylcyclopentadienyl



Tetracosylcyclopentadienyl



Pentacosylcyclopentadienyl



Hexacosylcyclopentadienyl



Heptacosylcyclopentadienyl



Octacosylcyclopentadienyl



Nonacosylcyclopentadienyl



Triacontylcyclopentadienyl



Cyclohexylcyclopentadienyl



Phenylcyclopentadienyl



Diphenylcyclopentadienyl



triphenylcyclopentadienyl



tetraphenylcyclopentadienyl



pentaphenylcyclopentadienyl



tolylcyclopentadineyl



benzylcyclopentadienyl



phenethylcyclopentadienyl



cyclohexylmethylcyclopentadienyl



napthylcyclopentadienyl



methylphenylcyclopentadienyl



methyltolylcyclopentadienyl



methylethylcyclopentadienyl



methylpropylcyclopentadienyl



methylbutylcyclopentadienyl



methylpentylcyclopentadienyl



methylhexylcyclopentadienyl



methylheptylcyclopentadienyl



methyloctylcyclopentadienyl



methylnonylcyclopentadienyl



methyldecylcyclopentadienyl



vinylcyclopentadienyl



propenylcyclopentadienyl



butenylcyclopentadienyl



indenyl



methylindenyl



dimethylindenyl



trimethylindenyl



methylpropylindenyl



dimethylpropylindenyl



methyldipropylindenyl



methylethylindenyl



methylbutylindenyl



ethylindenyl



propylindenyl



butylindenyl



pentylindenyl



hexylindenyl



heptylindenyl



octylindenyl



nonylindenyl



decylindenyl



phenylindenyl



(fluorophenyl)indenyl



(methylphenyl)indenyl



biphenylindenyl



(bis(trifluoromethyl)phenyl)indenyl



napthylindenyl



phenanthrylindenyl



benzylindenyl



benzindenyl



cyclohexylindenyl



methylphenylindenyl



ethylphenylindenyl



propylphenylindenyl



methylnapthylindenyl



ethylnapthylindenyl



propylnapthylindenyl



(methylphenyl)indenyl



(dimethylphenyl)indenyl



(ethylphenyl)indenyl



(diethylphenyl)indenyl



(propylphenyl)indenyl



(dipropylphenyl)indenyl



methyltetrahydroindenyl



dimethyltetrahydroindenyl



dimethyldihydroindenyl



dimethyltrihydroindenyl



methylphenyltetrahydroindenyl



methylphenyldihydroindenyl



methylphenyltrihydroindenyl



ethyltetrahydroindenyl



propyltetrahydroindenyl



butyltetrahydroindenyl



phenyltetrahydroindenyl



fluorenyl



methylfluorenyl



dimethylfluorenyl



trimethylfluorenyl



ethylfluorenyl



propylfluorenyl



butylfluorenyl



dibutylfluorenyl



pentylfluorenyl



hexylfluorenyl



heptylfluorenyl



octylfluorenyl



nonylfluorenyl



decylfluorenyl



phenylfluorenyl



napthylfluorenyl



benzylfluorenyl



methylphenylfluorenyl



ethylphenylfluorenyl



propylphenylfluorenyl



methylnapthylfluorenyl



ethylnapthylfluorenyl



propylnapthylfluorenyl



octahydrofluorenyl



tetrahydrofluorenyl



octamethyloctahydrodibenzo[b,h]fluorenyl



tetramethyltetrahydrobenzo[b]fluorenyl



diphenylmethylcyclopentadienyl



trimethylsilylcyclopentadienyl



triethylsilylcyclopentadienyl



trimethylgermylcyclopentadienyl



trimethylstannylcyclopentadienyl



triethylplumbylcyclopentadienyl



trifluromethylcyclopentadienyl



N,N-dimethylamidocyclopentadienyl



P,P-dimethylphosphidocyclopentadienyl



N,N-diethylamidocyclopentadienyl



methoxycyclopentadienyl



ethoxycyclopentadienyl



trimethylsiloxycyclopentadienyl



(N,N-dimethylamidomethyl)cyclopentadienyl



methyoxyindenyl



dimethyoxyindenyl



N,N-dimethylaminoindenyl



trimethylsiloxyindenyl



butyldimethylsiloxyindenyl



bis(N,N-dimethylamino)indenyl



di(trimethylsiloxy)indenyl



di(butyldimethylsiloxy)indenyl



methoxyfluorenyl



dimethoxyfluorenyl



N,N-dimethylaminofluorenyl



trimethylsiloxyfluorenyl



butyldimethylsiloxyfluorenyl



dimethoxyfluorenyl



bis(N,N-dimethylamino)fluorenyl



di(trimethylsiloxy)fluorenyl



di(butyldimethylsiloxy)fluorenyl



(JS′z−1−y) (y = 1)



Methylamido



Ethylamido



Propylamido



Butylamido



Pentylamido



Hexylamido



Heptylamido



Octylamido



Nonylamido



Decylamido



Eicosylamido



Heneicosylamido



Docosylamido



Tricosylamido



Tetracosylamido



Pentacosylamido



Hexacosylamido



Heptacosylamido



Octacosylamido



Nonacosylamido



Triacontylamido



Phenylamido



Tolylamido



Phenethylamido



Benzylamido



Cyclobutylamido



Cyclopentylamido



Cyclohexylamido



Cycloheptylamido



Cyclooctylamido



Cyclononylamido



Cyclodecylamido



Cyclododecylamido



Adamantylamido



Norbornylamido



Perfluorophenylamido



Fluorophenylamido



Difluorophenylamido



Oxo



Sulfido



(JS′z−1−y) (y = 0)



Methoxide



Ethoxide



Phenoxide



Dimethylphenoxide



Dipropylphenoxide



Methylthio



Ethylthio



Phenylthio



Dimethylphenylthio



Dipropylphenylthio



X1 or X2



chloride



bromide



iodide



fluoride



hydride



methyl



ethyl



propyl



butyl



pentyl



hexyl



heptyl



octyl



nonyl



decyl



undecyl



dodecyl



tridecyl



tetradecyl



pentadecyl



hexadecyl



heptadecyl



octadecyl



nonadecyl



eicosyl



heneicosyl



docosyl



tricosyl



tetracosyl



pentacosyl



hexacosyl



heptacosyl



octacosyl



nonacosyl



triacontyl



phenyl



benzyl



phenethyl



tolyl



methoxy



ethoxy



propoxy



butoxy



dimethylamido



diethylamido



methylethylamido



phenoxy



benzoxy



allyl



X1 and X2 together



methylidene



ethylidene



propylidene



tetramethylene



pentamethylene



hexamethylene



ethylenedihydroxy



butadiene



methylbutadiene



dimethylbutadiene



pentadiene



methylpentadiene



dimethylpentadiene



hexadiene



methylhexadiene



dimethylhexadiene



M



titanium



zirconium



hafnium



L or L′ (optional)



ethylene



propylene



butene



hexene



styrene



hexadiene



butadiene



dimethylbutadiene



pentadiene



methylhexadiene



dimethylhexadiene



acetylene



methylacetylene



ethylacetylene



benzyne



cyclopentene



cyclohexene



L′ (optional)



diethylether



dimethylether



trimethylamine



triphenylamine



triethylamine



tricyclohexylphosphine



triphenylphosphine



trimethylphosphine



tetrahydrofuran



furan



thiophene



dimethylsulfide



diphenylsulfide










Additional preferred catalysts include those described in WO 01/48034, which is incorporated herein by reference. Particularly preferred catalyst compounds include those disclosed at page 9, line 38 to page 25, line 42, page 28, lines 5 to 17, and page 30, line 37 to page 35, line 28.
Activators and Activation Methods for Catalyst Compounds
The polymerization pre-catalyst compounds, described above, are typically activated in various ways to yield compounds having a vacant coordination site that will coordinate, insert, and polymerize olefin(s). For the purposes of this patent specification and appended claims, the terms “cocatalyst” and “activator” are used herein interchangeably and are defined to be any compound which can activate any one of the catalyst compounds described above by converting the neutral catalyst compound to a catalytically active catalyst compound cation. Non-limiting activators, for example, include alumoxanes, aluminum alkyls, ionizing activators, which may be neutral or ionic, and conventional-type cocatalysts. Preferred activators typically include alumoxane compounds, modified alumoxane compounds, and ionizing anion precursor compounds that abstract one reactive, σ-bound, metal ligand making the metal complex cationic and providing a charge-balancing noncoordinating or weakly coordinating anion.
Aluminoxane and Aluminum Alkyl Activators
In one embodiment, alumoxane activators are utilized as an activator in the catalyst composition useful in the invention. Alumoxanes are generally oligomeric compounds containing —Al(R1)—O— sub-units, where R1 is an alkyl group. Examples of alumoxanes include methylalumoxane (MAO), modified methylalumoxane (MMAO), ethylalumoxane and isobutylalumoxane. Alkylalumoxanes and modified alkylalumoxanes are suitable as catalyst activators, particularly when the abstractable ligand is a halide, alkoxide or amide. Mixtures of different alumoxanes and modified alumoxanes may also be used.
The activator compounds comprising Lewis-acid activators and in particular alumoxanes are represented by the following general formulae:

(R3—Al—O)p  (11)

R4(R5—Al—O)p—AlR62  (12)

(M′)m+Q′m  (13)

An alumoxane is generally a mixture of both the linear and cyclic compounds. In the general alumoxane formula, R3, R4, R5 and R6 are, independently a C1–C30 alkyl radical, for example, methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, and “p” is an integer from 1 to about 50. Most preferably, R3, R4, R5 and R6 are each methyl and “p” is a least 4. When an alkyl aluminum halide or alkoxide is employed in the preparation of the alumoxane, one or more R3-6 groups may be halide or alkoxide. M′ is a metal or metalloid, and Q′ is a partially or fully fluorinated hydrocarbyl.
It is recognized that alumoxane is not a discrete material. A typical alumoxane will contain free trisubstituted or trialkyl aluminum, bound trisubstituted or trialkyl aluminum, and alumoxane molecules of varying degree of oligomerization. Those methylalumoxanes most preferred contain lower levels of trimethylaluminum. Lower levels of trimethylaluminum can be achieved by reaction of the trimethylaluminum with a Lewis base or by vacuum distillation of the trimethylaluminum or by any other means known in the art. It is also recognized that after reaction with the transition metal compound, some alumoxane molecules are in the anionic form as represented by the anion in equations 4–6, thus for our purposes are considered “non-coordinating” anions.
For further descriptions, see U.S. Pat. Nos. 4,665,208, 4,952,540, 5,041,584, 5,091,352, 5,206,199, 5,204,419, 4,874,734, 4,924,018, 4,908,463, 4,968,827, 5,329,032, 5,248,801, 5,235,081, 5,157,137, 5,103,031 and EP 0 561 476 A1, EP 0 279 586B1, EP 0 516 476A, EP 0 594 218A1 and WO 94/10180.
When the activator is an alumoxane (modified or unmodified), some embodiments select the maximum amount of activator at a 5000-fold molar excess Al/M over the catalyst precursor (per metal catalytic site). The minimum activator-to-catalyst-precursor is a 1:1 molar ratio.
Alumoxanes may be produced by the hydrolysis of the respective trialkylaluminum compound. MMAO may be produced by the hydrolysis of trimethylaluminum and a higher trialkylaluminum such as triisobutylaluminum. MMAO's are generally more soluble in aliphatic solvents and more stable during storage. There are a variety of methods for preparing alumoxane and modified alumoxanes, non-limiting examples of which are described in U.S. Pat. Nos. 4,665,208, 4,952,540, 5,091,352, 5,206,199, 5,204,419, 4,874,734, 4,924,018, 4,908,463, 4,968,827, 5,308,815, 5,329,032, 5,248,801, 5,235,081, 5,157,137, 5,103,031, 5,391,793, 5,391,529, 5,693,838, 5,731,253, 5,731,451, 5,744,656, 5,847,177, 5,854,166, 5,856,256 and 5,939,346 and European publications EP-A-0 561 476, EP-B1-0 279 586, EP-A-0 594-218 and EP-B1-0 586 665, and PCT publications WO 94/10180 and WO 99/15534, all of which are herein fully incorporated by reference. It may be preferable to use a visually clear methylalumoxane. A cloudy or gelled alumoxane can be filtered to produce a clear solution or clear alumoxane can be decanted from the cloudy solution. Another alumoxane is a modified methyl alumoxane (MMAO) cocatalyst type 3A (commercially available from Akzo Chemicals, Inc. under the trade name Modified Methylalumoxane type 3A, covered under patent number U.S. Pat. No. 5,041,584).
Aluminum alkyl or organoaluminum compounds which may be utilized as activators (or scavengers) include trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-hexylaluminum, tri-n-octylaluminum and the like.
Ionizing Activators
It is within the scope of this invention to use an ionizing or stoichiometric activator, neutral or ionic, such as tri(n-butyl)ammonium tetrakis (pentafluorophenyl)boron, a trisperfluorophenyl boron metalloid precursor or a trisperfluoronaphtyl boron metalloid precursor, polyhalogenated heteroborane anions (WO 98/43983), boric acid (U.S. Pat. No. 5,942,459) or combination thereof. It is also within the scope of this invention to use neutral or ionic activators alone or in combination with alumoxane or modified alumoxane activators.
Examples of neutral stoichiometric activators include tri-substituted boron, tellurium, aluminum, gallium and indium or mixtures thereof. The three substituent groups are each independently selected from alkyls, alkenyls, halogen, substituted alkyls, aryls, arylhalides, alkoxy and halides. Preferably, the three groups are independently selected from halogen, mono or multicyclic (including halosubstituted)aryls, alkyls, and alkenyl compounds and mixtures thereof, preferred are alkenyl groups having 1 to 20 carbon atoms, alkyl groups having 1 to 20 carbon atoms, alkoxy groups having 1 to 20 carbon atoms and aryl groups having 3 to 20 carbon atoms (including substituted aryls). More preferably, the three groups are alkyls having 1 to 4 carbon groups, phenyl, napthyl or mixtures thereof. Even more preferably, the three groups are halogenated, preferably fluorinated, aryl groups. Most preferably, the neutral stoichiometric activator is trisperfluorophenyl boron or trisperfluoronapthyl boron.
Ionic stoichiometric activator compounds may contain an active proton, or some other cation associated with, but not coordinated to, or only loosely coordinated to, the remaining ion of the ionizing compound. Such compounds and the like are described in European publications EP-A-0 570 982, EP-A-0 520 732, EP-A-0 495 375, EP-B1-0 500 944, EP-A-0 277 003 and EP-A-0 277 004, and U.S. Pat. Nos. 5,153,157, 5,198,401, 5,066,741, 5,206,197, 5,241,025, 5,384,299 and 5,502,124 and U.S. patent application Ser. No. 08/285,380, filed Aug. 3, 1994, all of which are herein fully incorporated by reference.
Ionic catalysts can be preparedly reacting a transition metal compound with some neutral Lewis acids, such as B(C6F6)3, which upon reaction with the hydrolyzable ligand (X) of the transition metal compound forms an anion, such as ([B(C6F5)3(X)]−), which stabilizes the cationic transition metal species generated by the reaction. The catalysts can be, and preferably are, prepared with activator components which are ionic compounds or compositions. However preparation of activators utilizing neutral compounds is also contemplated by this invention.
Compounds useful as an activator component in the preparation of the ionic catalyst systems used in the process of this invention comprise a cation, which is preferably a Bronsted acid capable of donating a proton, and a compatible non-coordinating anion which anion is relatively large (bulky), capable of stabilizing the active catalyst species (the Group 4 cation) which is formed when the two compounds are combined and said anion will be sufficiently labile to be displaced by olefinic diolefinic and acetylenically unsaturated substrates or other neutral Lewis bases such as ethers, nitrites and the like. Two classes of compatible non-coordinating anions have been disclosed in EPA 277,003 and EPA 277,004 published 1988: 1) anionic coordination complexes comprising a plurality of lipophilic radicals covalently coordinated to and shielding a central charge-bearing metal or metalloid core, and 2) anions comprising a plurality of boron atoms such as carboranes, metallacarboranes and boranes.
In a preferred embodiment, the stoichiometric activators include a cation and an anion component, and may be represented by the following formula:

(L-H)d+(Ad−)  (14)

wherein L is an neutral Lewis base;

    H is hydrogen;
    (L-H)+ is a Bronsted acid
    Ad− is a non-coordinating anion having the charge d−
    d is an integer from 1 to 3.


The cation component, (L-H)d+ may include Bronsted acids such as protons or protonated Lewis bases or reducible Lewis acids capable of protonating or abstracting a moiety, such as an alkyl or aryl, from the bulky ligand metallocene containing transition metal catalyst precursor, resulting in a cationic transition metal species.
The activating cation (L-H)d+ may be a Bronsted acid, capable of donating a proton to the transition metal catalytic precursor resulting in a transition metal cation, including ammoniums, oxoniums, phosphoniums, silyliums, and mixtures thereof, preferably ammoniums of methylamine, aniline, dimethylamine, diethylamine, N-methylaniline, diphenylamine, trimethylamine, triethylamine, N,N-dimethylaniline, methyldiphenylamine, pyridine, p-bromo N,N-dimethylaniline, p-nitro-N,N-dimethylaniline, phosphoniums from triethylphosphine, triphenylphosphine, and diphenylphosphine, oxomiuns from ethers such as dimethyl ether diethyl ether, tetrahydrofuran and dioxane, sulfoniums from thioethers, such as diethyl thioethers and tetrahydrothiophene, and mixtures thereof. The activating cation (L-H)d+ may also be a moiety such as silver, tropylium, carbeniums, ferroceniums and mixtures, preferably carboniums and ferroceniums. Most preferably (L-H)d+ is triphenyl carbonium.
The anion component Ad− include those having the formula [Mk+Qn]d− wherein k is an integer from 1 to 3; n is an integer from 2–6; n−k=d; M is an element selected from Group 13 of the Periodic Table of the Elements, preferably boron or aluminum, and Q is independently a hydride, bridged or unbridged dialkylamido, halide, alkoxide, aryloxide, hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, and halosubstituted-hydrocarbyl radicals, said Q having up to 20 carbon atoms with the proviso that in not more than 1 occurrence is Q a halide. Preferably, each Q is a fluorinated hydrocarbyl group having 1 to 20 carbon atoms, more preferably each Q is a fluorinated aryl group, and most preferably each Q is a pentafluoryl aryl group. Examples of suitable Ad− also include diboron compounds as disclosed in U.S. Pat. No. 5,447,895, which is fully incorporated herein by reference.
Illustrative, but not limiting examples of boron compounds which may be used as an activating cocatalyst in the preparation of the improved catalysts of this invention are tri-substituted ammonium salts such as:

    trimethylammonium tetraphenylborate, triethylammonium tetraphenylborate, tripropylammonium tetraphenylborate, tri(n-butyl)ammonium tetraphenylborate, tri(t-butyl)ammonium tetraphenylborate, N,N-dimethylanilinium tetraphenylborate, N,N-diethylanilinium tetraphenylborate, N,N-dimethyl-(2,4,6-trimethylanilinium)tetraphenylborate, tropillium tetraphenylborate, triphenylcarbenium tetraphenylborate, triphenylphosphonium tetraphenylborate triethylsilylium tetraphenylborate, benzene(diazonium)tetraphenylborate, trimethylammonium tetrakis(pentafluorophenyl)borate, triethylammonium tetrakis(pentafluorophenyl)borate, tripropylammonium tetrakis(pentafluorophenyl)borate, tri(n-butyl)ammonium tetrakis(pentafluorophenyl)borate, tri(sec-butyl)ammonium tetrakis(pentafluorophenyl)borate, N,N-dimethylanilinium tetrakis(pentafluorophenyl)borate, N,N-diethylanilinium tetrakis(pentafluorophenyl)borate, N,N-dimethyl-(2,4,6-trimethylanilinium) tetrakis(pentafluorophenyl)borate, tropillium tetrakis(pentafluorophenyl)borate, triphenylcarbenium tetrakis(pentafluorophenyl)borate, triphenylphosphonium tetrakis(pentafluorophenyl)borate, triethylsilylium tetrakis(pentafluorophenyl)borate, benzene(diazonium) tetrakis(pentafluorophenyl)borate, trimethylammonium tetrakis-(2,3,4,6-tetrafluorophenyl) borate, triethylammonium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, tripropylammonium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, tri(n-butyl)ammonium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, dimethyl(t-butyl)ammonium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, N,N-dimethylanilinium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, N,N-diethylanilinium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, N,N-dimethyl-(2,4,6-trimethylanilinium)tetrakis-(2,3,4,6-tetrafluorophenyl)borate, tropillium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, triphenylcarbenium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, triphenylphosphonium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, triethylsilylium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, benzene(diazonium)tetrakis-(2,3,4,6-tetrafluorophenyl)borate, trimethylammonium tetrakis(perfluoronapthyl)borate, triethylammonium tetrakis(perfluoronapthyl)borate, tripropylammonium tetrakis(perfluoronapthyl)borate, tri(n-butyl)ammonium tetrakis(perfluoronapthyl)borate, tri(t-butyl)ammonium tetrakis(perfluoronapthyl)borate, N,N-dimethylanilinium tetrakis(perfluoronapthyl)borate, N,N-diethylanilinium tetrakis(perfluoronapthyl)borate, N,N-dimethyl-(2,4,6-trimethylanilinium) tetrakis(perfluoronapthyl)borate, tropillium tetrakis(perfluoronapthyl)borate, triphenylcarbenium tetrakis(perfluoronapthyl)borate, triphenylphosphonium tetrakis(perfluoronapthyl)borate, triethylsilylium tetrakis(perfluoronapthyl)borate, benzene(diazonium)tetrakis(perfluoronapthyl)borate, trimethylammonium tetrakis(perfluorobiphenyl)borate, triethylammonium tetrakis(perfluorobiphenyl)borate, tripropylammonium tetrakis(perfluorobiphenyl)borate, tri(n-butyl)ammonium tetrakis(perfluorobiphenyl)borate, tri(t-butyl)ammonium tetrakis(perfluorobiphenyl)borate, N,N-dimethylanilinium tetrakis(perfluorobiphenyl)borate, N,N-diethylanilinium tetrakis(perfluorobiphenyl)borate, N,N-dimethyl-(2,4,6-trimethylanilinium) tetrakis(perfluorobiphenyl)borate, tropillium tetrakis(perfluorobiphenyl)borate, triphenylcarbenium tetrakis(perfluorobiphenyl)borate, triphenylphosphonium tetrakis(perfluorobiphenyl)borate, triethylsilylium tetrakis(perfluorobiphenyl)borate, benzene(diazonium) tetrakis(perfluorobiphenyl)borate, trimethylammonium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, triethylammonium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, tripropylammonium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, tri(n-butyl)ammonium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, tri(t-butyl)ammonium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, N,N-dimethylanilinium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, N,N-diethylanilinium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, N,N-dimethyl-(2,4,6-trimethylanilinium) tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, tropillium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, triphenylcarbenium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, triphenylphosphonium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, triethylsilylium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, benzene(diazonium)tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, and dialkyl ammonium salts such as: di-(i-propyl)ammonium tetrakis(pentafluorophenyl)borate, and dicyclohexylammonium tetrakis(pentafluorophenyl)borate; and additional tri-substituted phosphonium salts such as tri(o-tolyl)phosphonium tetrakis(pentafluorophenyl)borate, and tri(2,6-dimethylphenyl)phosphonium tetrakis(pentafluorophenyl)borate.


Most preferably, the ionic stoichiometric activator (L-H)d+(Ad−) is N,N-dimethylanilinium tetra(perfluorophenyl)borate, N,N-dimethylanilinium tetrakis(perfluoronapthyl)borate, N,N-dimethylanilinium tetrakis(perfluorobiphenyl)borate, N,N-dimethylanilinium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, triphenylcarbenium tetrakis(perfluoronapthyl)borate, triphenylcarbenium tetrakis(perfluorobiphenyl)borate, triphenylcarbenium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate, or triphenylcarbenium tetra(perfluorophenyl)borate.
In one embodiment, an activation method using ionizing ionic compounds not containing an active proton but capable of producing a bulky ligand metallocene catalyst cation and their non-coordinating anion are also contemplated, and are described in EP-A-0 426 637, EP-A-0 573 403 and U.S. Pat. No. 5,387,568, which are all herein incorporated by reference.
The term “non-coordinating anion” (NCA) means an anion which either does not coordinate to said cation or which is only weakly coordinated to said cation thereby remaining sufficiently labile to be displaced by a neutral Lewis base. “Compatible” non-coordinating anions are those which are not degraded to neutrality when the initially formed complex decomposes. Further, the anion will not transfer an anionic substituent or fragment to the cation so as to cause it to form a neutral four coordinate metallocene compound and a neutral by-product from the anion. Non-coordinating anions useful in accordance with this invention are those that are compatible, stabilize the metallocene cation in the sense of balancing its ionic charge at +1, yet retain sufficient lability to permit displacement by an ethylenically or acetylenically unsaturated monomer during polymerization. These types of cocatalysts sometimes use tri-isobutyl aluminum or tri-octyl aluminum as a scavenger.
Invention process also can employ cocatalyst compounds or activator compounds that are initially neutral Lewis acids but form a cationic metal complex and a noncoordinating anion, or a zwitterionic complex upon reaction with the invention compounds. For example, tris(pentafluorophenyl)boron or aluminum act to abstract a hydrocarbyl or hydride ligand to yield an invention cationic metal complex and stabilizing noncoordinating anion, see EP-A-0 427 697 and EP-A-0 520 732 for illustrations of analogous Group-4 metallocene compounds. Also, see the methods and compounds of EP-A-0 495 375. For formation of zwitterionic complexes using analogous Group 4 compounds, see U.S. Pat. Nos. 5,624,878; 5,486,632; and 5,527,929.
When the cations of noncoordinating anion precursors are Bronsted acids such as protons or protonated Lewis bases (excluding water), or reducible Lewis acids such as ferrocenium or silver cations, or alkali or alkaline earth metal cations such as those of sodium, magnesium or lithium, the catalyst-precursor-to-activator molar ratio may be any ratio. Combinations of the described activator compounds may also be used for activation. For example, tris(perfluorophenyl)boron can be used with methylalumoxane.
Conventional-Type Cocatalysts (Activators)
Typically, conventional transition metal catalyst compounds excluding some conventional-type chromium catalyst compounds are activated with one or more of the conventional cocatalysts which may be represented by the formula:

M3M4vX2cR2b-c  (15)

wherein M3 is a metal from Group 1 to 3 and 12 to 13 of the Periodic Table of Elements; M4 is a metal of Group 1 of the Periodic Table of Elements; v is a number from 0 to 1; each X2 is any halogen; c is a number from 0 to 3; each R2 is a monovalent hydrocarbon radical or hydrogen; b is a number from 1 to 4; and wherein b minus c is at least 1. Other conventional-type organometallic cocatalyst compounds for the above conventional-type transition metal catalysts have the formula M3R2k, where M3 is a Group IA, IIA, IIB or IIIA metal, such as lithium, sodium, beryllium, barium, boron, aluminum, zinc, cadmium, and gallium; k equals 1, 2 or 3 depending upon the valency of M3 which valency in turn normally depends upon the particular Group to which M3 belongs; and each R2 may be any monovalent hydrocarbon radical.

Non-limiting examples of conventional-type organometallic cocatalyst compounds useful with the conventional-type catalyst compounds described above include methyllithium, butyllithium, dihexylmercury, butylmagnesium, diethylcadmium, benzylpotassium, diethylzinc, tri-n-butylaluminum, diisobutyl ethylboron, diethylcadmium, di-n-butylzinc and tri-n-amylboron, and, in particular, the aluminum alkyls, such as tri-hexyl-aluminum, triethylaluminum, trimethylaluminum, and tri-isobutylaluminum. Other conventional-type cocatalyst compounds include mono-organohalides and hydrides of Group 2 metals, and mono- or di-organohalides and hydrides of Group 3 and 13 metals. Non-limiting examples of such conventional-type cocatalyst compounds include di-isobutylaluminum bromide, isobutylboron dichloride, methyl magnesium chloride, ethylberyllium chloride, ethylcalcium bromide, di-isobutylaluminum hydride, methylcadmium hydride, diethylboron hydride, hexylberyllium hydride, dipropylboron hydride, octylmagnesium hydride, butylzinc hydride, dichloroboron hydride, di-bromo-aluminum hydride and bromocadmium hydride. Conventional-type organometallic cocatalyst compounds are known to those in the art and a more complete discussion of these compounds may be found in U.S. Pat. Nos. 3,221,002 and 5,093,415, which are herein fully incorporated by reference.
Additional Activators
Other activators include those described in PCT publication WO 98/07515 such as tris (2,2′,2′′-nonafluorobiphenyl)fluoroaluminate, which publication is fully incorporated herein by reference. Combinations of activators are also contemplated by the invention, for example, alumoxanes and ionizing activators in combinations, see for example, EP-B1 0 573 120, PCT publications WO 94/07928 and WO 95/14044 and U.S. Pat. Nos. 5,153,157 and 5,453,410 all of which are herein fully incorporated by reference.
Other suitable activators are disclosed in WO 98/09996, incorporated herein by reference, which describes activating bulky ligand metallocene catalyst compounds with perchlorates, periodates and iodates including their hydrates. WO 98/30602 and WO 98/30603, incorporated by reference, describe the use of lithium (2,2′-bisphenyl-ditrimethylsilicate).4THF as an activator for a bulky ligand metallocene catalyst compound. WO 99/18135, incorporated herein by reference, describes the use of organo-boron-aluminum acitivators. EP-B1-0 781 299 describes using a silylium salt in combination with a non-coordinating compatible anion. Also, methods of activation such as using radiation (see EP-B1-0 615 981 herein incorporated by reference), electro-chemical oxidation, and the like are also contemplated as activating methods for the purposes of rendering the neutral bulky ligand metallocene catalyst compound or precursor to a bulky ligand metallocene cation capable of polymerizing olefins. Other activators or methods for activating a bulky ligand metallocene catalyst compound are described in for example, U.S. Pat. Nos. 5,849,852, 5,859,653 and 5,869,723 and WO 98/32775, WO 99/42467 (dioctadecylmethylammonium-bis(tris(pentafluorophenyl)borane)benzimidazolide), which are herein incorporated by reference.
Another suitable ion forming, activating cocatalyst comprises a salt of a cationic oxidizing agent and a noncoordinating, compatible anion represented by the formula:

(OXe+)d(Ad−)e  (16)

wherein OXe+ is a cationic oxidizing agent having a charge of e+; e is an integer from 1 to 3; and A−, and d are as previously defined. Examples of cationic oxidizing agents include: ferrocenium, hydrocarbyl-substituted ferrocenium, Ag+, or Pb+2. Preferred embodiments of Ad− are those anions previously defined with respect to the Bronsted acid containing activators, especially tetrakis(pentafluorophenyl)borate.

It within the scope of this invention that catalyst compounds can be combined one or more activators or activation methods described above. For example, a combination of activators have been described in U.S. Pat. Nos. 5,153,157 and 5,453,410, European publication EP-B1 0 573 120, and PCT publications WO 94/07928 and WO 95/14044. These documents all discuss the use of an alumoxane and an ionizing activator with a bulky ligand metallocene catalyst compound.
The Choice of Transition Metal Catylst Components
The catalyst system of this invention comprises two or more transition metal compounds as described above. At least one of the compounds must be capable of producing a crystalline poly-α-olefin, preferably isotactic polypropylene or syndiotactic polypropylene, having a crystallinity of 40% or more. The other compound must be capable of producing an amorphous poly-α-olefin, preferably atactic polypropylene, having a crystallinity of 20% or less.
The choice of transition metal component for the crystalline polymer fraction is a subset of the transition metal component of equations 8–9. This preferred component is illustrated in equation 17:




wherein A′, M, X1 and X2 are as previously defined. Substituents S′′v are independently defined as S′′ in equations 8–9 where the subscript “v” denotes the carbon atom on the Cp-ring to which the substituent is bonded.

Preferably metallocene precursors for producing poly-α-olefins having enhanced isotactic character are those of Equation 17 where S′′v are independently chosen such that the metallocene framework 1) has no plane of symmetry containing the metal center, and 2) has a C2-axis of symmetry through the metal center. Such complexes, such as rac-Me2Si(indenyl)2ZrMe2 and rac-Me2Si(indenyl)2HfMe2 are well known in the art and generally produce isotactic polymers with higher degrees of stereoregularity than the less symmetric chiral systems. Likewise another preferred class of transition metal compounds that can produce isotactic polymers useful in this invention are those monocyclopentadienyl catalysts disclosed in U.S. Pat. No. 5,026,798, which is incorporated by reference herein.
Preferred chiral racemic metallocene compounds which, according to the present invention, provide catalyst systems which are specific to the production of isotactic poly-α-olefins include the racemic versions of:

    dimethylsilylbis(indenyl)zirconium dichloride, dimethylsilylbis(indenyl) zirconium dimethyl, diphenylsilylbis(indenyl)zirconium dichloride, diphenylsilylbis(indenyl)zirconium dimethyl, methylphenylsilylbis(indenyl) zirconium dichloride, methylphenylsilylbis(indenyl)zirconium dimethyl, ethylenebis(indenyl)zirconium dichloride, ethylenebis(indenyl)zirconium dimethyl, methylenebis(indenyl) zirconium dichloride, methylenebis(indenyl)zirconium dimethyl, dimethylsilylbis(indenyl)hafnium dichloride, dimethylsilylbis(indenyl)hafnium dimethyl, diphenylsilylbis(indenyl)hafnium dichloride, diphenylsilylbis(indenyl) hafnium dimethyl, methylphenylsilylbis(indenyl)hafnium dichloride, methylphenylsilylbis(indenyl)hafnium dimethyl, ethylenebis(indenyl)hafnium dichloride, ethylenebis(indenyl)hafnium dimethyl, methylenebis(indenyl)hafnium dichloride, methylenebis(indenyl)hafnium dimethyl, dimethylsilylbis(tetrahydroindenyl)zirconium dichloride, dimethylsilylbis(tetrahydroindenyl)zirconium dimethyl, diphenylsilylbis(tetrahydroindenyl)zirconium dichloride, diphenylsilylbis(tetrahydroindenyl)zirconium dimethyl, methylphenylsilylbis(tetrahydroindenyl)zirconium dichloride, methylphenylsilylbis(tetrahydroindenyl)zirconium dimethyl, ethylenebis(tetrahydroindenyl)zirconium dichloride, ethylenebis(tetrahydroindenyl)zirconium dimethyl, methylenebis(tetrahydroindenyl)zirconium dichloride, methylenebis(tetrahydroindenyl)zirconium dimethyl, dimethylsilylbis(tetrahydroindenyl)hafnium dichloride, dimethylsilylbis(tetrahydroindenyl)hafnium dimethyl, diphenylsilylbis(tetrahydroindenyl)hafnium dichloride, diphenylsilylbis(tetrahydroindenyl)hafnium dimethyl, methylphenylsilylbis(tetrahydroindenyl)hafnium dichloride, methylphenylsilylbis(tetrahydroindenyl)hafnium dimethyl, ethylenebis(tetrahydroindenyl)hafnium dichloride, ethylenebis(tetrahydroindenyl) hafnium dimethyl, methylenebis(tetrahydroindenyl)hafnium dichloride, methylenebis(tetrahydroindenyl)hafnium dimethyl, dimethylsilylbis(2-methylindenyl) zirconium dichloride, dimethylsilylbis(2-methylindenyl)zirconium dimethyl, diphenylsilylbis(2-methylindenyl)zirconium dichloride, diphenylsilylbis(2-methylindenyl)zirconium dimethyl, methylphenylsilylbis(2-methylindenyl) zirconium dichloride, methylphenylsilylbis(2-methylindenyl) zirconium dimethyl, ethylenebis(2-methylindenyl)zirconium dichloride, ethylenebis(2-methylindenyl)zirconium dimethyl, methylenebis(2-methylindenyl) zirconium dichloride, methylenebis(2-methylindenyl)zirconium dimethyl, dimethylsilylbis(2-methylindenyl)hafnium dichloride, dimethylsilylbis(2-methylindenyl) hafnium dimethyl, diphenylsilylbis(2-methylindenyl)hafnium dichloride, diphenylsilylbis(2-methylindenyl)hafnium dimethyl, methylphenylsilylbis(2-methylindenyl)hafnium dichloride, methylphenylsilylbis(2-methylindenyl)hafnium dimethyl, ethylenebis(2-methylindenyl) hafnium dichloride, ethylenebis(2-methylindenyl)hafnium dimethyl, methylenebis(2-methylindenyl)hafnium dichloride, methylenebis(2-methylindenyl) hafnium dimethyl, rac-dimethylsilylbis(2-methyl-4-phenylindenyl) zirconium dichloride, diphenylsilylbis(2-methyl-4-phenylindenyl) zirconium dimethyl, diphenylsilylbis(2-methyl-4-phenylindenyl)zirconium dichloride, diphenylsilylbis(2-methyl-4-phenylindenyl)zirconium dimethyl, methylphenylsilylbis(2-methyl-4-phenylindenyl)zirconium dichloride, methylphenylsilylbis(2-methyl-4-phenylindenyl)zirconium dimethyl, ethylenebis(2-methyl-4-phenylindenyl)zirconium dichloride, ethylenebis(2-methyl-4-phenylindenyl)zirconium dimethyl, methylenebis(2-methyl-4-phenylindenyl) zirconium dichloride, methylenebis(2-methyl-4-phenylindenyl) zirconium dimethyl, dimethylsilylbis(2-methyl-4-phenylindenyl)hafnium dichloride, dimethylsilylbis(2-methyl-4-phenylindenyl)hafnium dimethyl, diphenylsilylbis(2-methyl-4-phenylindenyl)hafnium dichloride, diphenylsilylbis(2-methyl-4-phenylindenyl)hafnium dimethyl, methylphenylsilylbis(2-methyl-4-phenylindenyl)hafnium dichloride, methylphenylsilylbis(2-methyl-4-phenylindenyl)hafnium dimethyl, ethylenebis(2-methyl-4-phenylindenyl)hafnium dichloride, ethylenebis(2-methyl-4-phenylindenyl) hafnium dimethyl, methylenebis(2-methyl-4-phenylindenyl) hafnium dichloride, methylenebis(2-methyl-4-phenylindenyl)hafnium dimethyl, dimethylsilylbis(4,7-dimethylindenyl)zirconium dichloride, dimethylsilylbis(4,7-dimethylindenyl) zirconium dimethyl, diphenylsilylbis(4,7-dimethylindenyl) zirconium dichloride, diphenylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, methylphenylsilylbis(4,7-dimethylindenyl)zirconium dichloride, methylphenylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, ethylenebis(4,7-dimethylindenyl) zirconium dichloride, ethylenebis(4,7-dimethylindenyl) zirconium dimethyl, methylenebis(4,7-dimethylindenyl)zirconium dichloride, methylenebis(4,7-dimethylindenyl)zirconium dimethyl, dimethylsilylbis(4,7-dimethylindenyl) hafnium dichloride, dimethylsilylbis(4,7-dimethylindenyl) hafnium dimethyl, diphenylsilylbis(4,7-dimethylindenyl)hafnium dichloride, diphenylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, methylphenylsilylbis(4,7-dimethylindenyl)hafnium dichloride, methylphenylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, ethylenebis(4,7-dimethylindenyl) hafnium dichloride, ethylenebis(4,7-dimethylindenyl)hafnium dimethyl, methylenebis(4,7-dimethylindenyl)hafnium dichloride, methylenebis(4,7-dimethylindenyl)hafnium dimethyl, dimethylsilylbis(2-methyl-4-napthylindenyl)zirconium dichloride, dimethylsilylbis(2-methyl-4-napthylindenyl) zirconium dimethyl, diphenylsilylbis(2-methyl-4-napthylindenyl) zirconium dichloride, diphenylsilylbis(2-methyl-4-napthylindenyl)zirconium dimethyl, methylphenylsilylbis(2-methyl-4-napthylindenyl)zirconium dichloride, methylphenylsilylbis(2-methyl-4-napthylindenyl)zirconium dimethyl, ethylenebis(2-methyl-4-napthylindenyl)zirconium dichloride, ethylenebis(2-methyl-4-napthylindenyl)zirconium dimethyl, methylenebis(2-methyl-4-napthylindenyl) zirconium dichloride, methylenebis(2-methyl-4-napthylindenyl) zirconium dimethyl, dimethylsilylbis(2-methyl-4-napthylindenyl)hafnium dichloride, dimethylsilylbis(2-methyl-4-napthylindenyl)hafnium dimethyl, diphenylsilylbis(2-methyl-4-napthylindenyl)hafnium dichloride, diphenylsilylbis(2-methyl-4-napthylindenyl)hafnium dimethyl, methylphenylsilylbis(2-methyl-4-napthylindenyl)hafnium dichloride, methylphenylsilylbis(2-methyl-4-napthylindenyl)hafnium dimethyl, ethylenebis(2-methyl-4-napthylindenyl)hafnium dichloride, ethylenebis(2-methyl-4-napthylindenyl)hafnium dimethyl, methylenebis(2-methyl-4-napthylindenyl) hafnium dichloride, methylenebis(2-methyl-4-napthylindenyl)hafnium dimethyl, dimethylsilylbis(2,3-dimethylcyclopentadienyl)zirconium dichloride, dimethylsilylbis(2,3-dimethylcyclopentadienyl)zirconium dimethyl, diphenylsilylbis(2,3-dimethylcyclopentadienyl)zirconium dichloride, diphenylsilylbis(2,3-dimethylcyclopentadienyl)zirconium dimethyl, methylphenylsilylbis(2,3-dimethylcyclopentadienyl)zirconium dichloride, methylphenylsilylbis(2,3-dimethylcyclopentadienyl)zirconium dimethyl, ethylenebis(2,3-dimethylcyclopentadienyl)zirconium dichloride, ethylenebis(2,3-dimethylcyclopentadienyl) zirconium dimethyl, methylenebis(2,3-dimethylcyclopentadienyl) zirconium dichloride, methylenebis(2,3-dimethylcyclopentadienyl) zirconium dimethyl, dimethylsilylbis(2,3-dimethylcyclopentadienyl) hafnium dichloride, dimethylsilylbis(2,3 dimethylcyclopentadienyl) hafnium dimethyl, diphenylsilylbis(2,3-dimethylcyclopentadienyl) hafnium dichloride, diphenylsilylbis(2,3-dimethylcyclopentadienyl) hafnium dimethyl, methylphenylsilylbis(2,3-dimethylcyclopentadienyl) hafnium dichloride, methylphenylsilylbis(2,3-dimethylcyclopentadienyl) hafnium dimethyl, ethylenebis(2,3-dimethylcyclopentadienyl) hafnium dichloride, ethylenebis(2,3-dimethylcyclopentadienyl) hafnium dimethyl, methylenebis(2,3-dimethylcyclopentadienyl) hafnium dichloride, methylenebis(2,3-dimethylcyclopentadienyl) hafnium dimethyl, dimethylsilylbis(3-trimethylsilylcyclopentadienyl) zirconium dichloride, dimethylsilylbis(3-trimethylsilylcyclopentadienyl) zirconium dimethyl, diphenylsilylbis(3-trimethylsilylcyclopentadienyl) zirconium dichloride, diphenylsilylbis(3-trimethylsilylcyclopentadienyl) zirconium dimethyl, methylphenylsilylbis(3-trimethylsilylcyclopentadienyl) zirconium dichloride, methylphenylsilylbis(3-trimethylsilylcyclopentadienyl) zirconium dimethyl, ethylenebis(3-trimethylsilylcyclopentadienyl) zirconium dichloride, ethylenebis(3-trimethylsilylcyclopentadienyl) zirconium dimethyl, methylenebis(3-trimethylsilylcyclopentadienyl) zirconium dichloride, methylenebis(3-trimethylsilylcyclopentadienyl) zirconium dimethyl, dimethylsilylbis(3-trimethylsilylcyclopentadienyl) hafnium dichloride, dimethylsilylbis(3-trimethylsilylcyclopentadienyl) hafnium dimethyl, diphenylsilylbis(3-trimethylsilylcyclopentadienyl) hafnium dichloride, diphenylsilylbis(3-trimethylsilylcyclopentadienyl) hafnium dimethyl, methylphenylsilylbis(3-trimethylsilylcyclopentadienyl) hafnium dichloride, methylphenylsilylbis(3-trimethylsilylcyclopentadienyl) hafnium dimethyl, ethylenebis(3-trimethylsilylcyclopentadienyl) hafnium dichloride, ethylenebis(3-trimethylsilylcyclopentadienyl) hafnium dimethyl, methylenebis(3-trimethylsilylcyclopentadienyl) hafnium dichloride, methylenebis(3-trimethylsilylcyclopentadienyl) hafnium dimethyl, dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3 ′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-isobutyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η-4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)24-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl; and
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl; and the like.


The most preferred species are the racemic versions of: dimethylsilylbis(indenyl)zirconium dichloride, dimethylsilylbis(indenyl)zirconium dimethyl, ethylenebis(indenyl)zirconium dichloride, ethylenebis(indenyl)zirconium dimethyl, dimethylsilylbis(tetrahydorindenyl)zirconium dichloride, dimethylsilylbis(tetrahydorindenyl)zirconium dimethyl, ethylenebis(tetrahydorindenyl)zirconium dichloride, ethylenebis(tetrahydorindenyl)zirconium dimethyl, dimethylsilylbis(2-methylindenyl)zirconium dichloride, dimethylsilylbis(2-methylindenyl)zirconium dimethyl, ethylenebis(2-methylindenyl)zirconium dichloride, ethylenebis(2-methylindenyl)zirconium dimethyl, dimethylsilylbis(2-methyl-4 phenylindenyl)zirconium dichloride, dimethylsilylbis(2-methyl-4-phenylindenyl)zirconium dimethyl, ethylenebis(2-methyl-4-phenylindenyl)zirconium dichloride, ethylenebis(2-methyl-4-phenylindenyl)zirconium dimethyl, dimethylsilylbis(4,7-dimethylindenyl)zirconium dichloride, dimethylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, ethylenebis(4,7-dimethylindenyl)zirconium dichloride, ethylenebis(4,7-dimethylindenyl)zirconium dimethyl, dimethylsilylbis(indenyl)hafnium dichloride, dimethylsilylbis(indenyl)hafnium dimethyl, ethylenebis(indenyl)hafnium dichloride, ethylenebis(indenyl)hafnium dimethyl, dimethylsilylbis(tetrahydorindenyl)hafnium dichloride, dimethylsilylbis(tetrahydorindenyl)hafnium dimethyl, ethylenebis(tetrahydorindenyl)hafnium dichloride, ethylenebis(tetrahydorindenyl)hafnium dimethyl, dimethylsilylbis(2-methylindenyl)hafnium dichloride, dimethylsilylbis(2-methylindenyl)hafnium dimethyl, ethylenebis(2-methylindenyl)hafnium dichloride, ethylenebis(2-methylindenyl)hafnium dimethyl, dimethylsilylbis(2-methyl-4-phenylindenyl)hafnium dichloride, dimethylsilylbis(2-methyl-4-phenylindenyl)hafnium dimethyl, ethylenebis(2-methyl-4-phenylindenyl)hafnium dichloride, ethylenebis(2-methyl-4-phenylindenyl)hafnium dimethyl, dimethylsilylbis(4,7-dimethylindenyl)hafnium dichloride, dimethylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, ethylenebis(4,7-dimethylindenyl)hafnium dichloride, and ethylenebis(4,7-dimethylindenyl)hafnium dimethyl.
Similarly, metallocene precursors providing tacticity control exist where (A-Cp) is (Cp) (Cp*), both Cp and Cp* having substituents on the cyclopentadienyl rings of sufficient steric bulk to restrict rotation of the cyclopentadienyl ligands such that the aforementioned symmetry conditions are satisfied. Preferable chiral racemic metallocenes of this type include bis(tricyclo[5.2.1.02,6]deca-2,5-dienyl)zirconium and -hafnium dimethyl, bis((1R)-9,9-dimethyltricyclo[6.1.1.02,6]deca-2,5-dienyl)zirconium dimethyl, bis(tricyclo[5.2.1.02,6]deca-2,5,8-trienyl)zirconium dimethyl, bis(tricyclo[5.2.2.02,6 ]undeca-2,5,8-trienyl)zirconium and -hafnium dimethyl and bis((1R,8R)-7,7,9,9-tetramethyl[6.1.1.02,6]deca-2,5-dienyl)zirconium and -hafnium dimethyl.
Preferably metallocene precursors for the production of poly-α-olefins having enhanced syndiotactic character are also those of Equation 17 where S′′ are independently chosen such that the two Cp-ligands have substantially different steric bulk. In order to produce a syndiotactic polymer the pattern of the groups substituted on the Cp-rings is important. Thus, by steric difference or sterically different as used herein, it is intended to imply a difference between the steric characteristics of the Cp and Cp* rings that renders each to be symmetrical With respect to the A bridging group but different with respect to each other that controls the approach of each successive monomer unit that is added to the polymer chain. The steric difference between the Cp and Cp* rings act to block the approaching monomer from a random approach such that the monomer is added to the polymer chain in the syndiotactic configuration.
Preferable metallocene precursors for the production of syndiotactic polymers are those of Equation 17 where S′′ are independently chosen such that 1) the steric difference between the two Cp-ligands is maximized and 2) there remains a plane of symmetry through the metal center and the C1 and C1′ carbon atoms of the Cp-rings in Equation 17. Thus, complexes such as Me2C(η5-C5H4)(1-fluorenyl)MMe2 (where M=Ti, Zr, or Hf) which possess this symmetry are preferred, and generally produce the syndiotactic polymer with higher degrees of stereoregularity than similar, but less symmetric, systems. Additionally, in the above equation, 1-fluorenyl may be substituted with 3,8-di-t-butylfluorenyl, octahydrofluorenyl or 3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,10,10,11,11-octahydrodibenzo[b,h]fluorene. Because pre-catalysts of this type often lose there ability to control the stereoregularity of the polymer under high temperature reaction conditions, to insure higher crystallinity in the material requires using these catalysts at lower reactor temperatures, preferably at temperatures below 80° C.
Preferred catalysts that can produce the lower molecular weight isotactic polypropylene are those described in U.S. Pat. No. 5,120,867, which is incorporated by reference herein. Any mixture of catalysts, including supported catalysts, which can be used together in a single reactor or in a series reactor configuration, that can also produce the desired polypropylene can be utilized in this invention to produce the in situ blend. Preferred catalysts include cyclopentadienyl transition metals compounds and derivatives thereof used in conjunction with an alumoxane and/or a compatible non-coordinating anion. Additional preferred catalsyts that produce crystalline polypropylene are discussed in Chem. rev. 2000, 100, 1253–1345, which is incorporated by reference herein.
The preferred choice of transition metal component for the amorphous polymer fraction is the mono-cyclopentadienyl transition metal component of equation 10 where y is equal to 1. This preferred component is illustrated in equation 18:




where A′, J, S′, X1, X2, L′, z and w as are previously defined and M is titanium. Substituent S′′v is defined to be the same as S′′ in equation 10 where the subscript “v” denotes the carbon atom on the cyclopentadienyl ring to which the substituent is bonded and where there can be zero, two or four substituents, S′′, on the cyclopentadienyl ring provided that the cyclopentadienyl ring is symmetrically substituted. Symmetrically substituted is defined to mean that the cyclopentadienyl ring is substituted in the 2 and 5 positions and/or 3 and 4 positions with S′′ groups that are of approximately of the same steric bulk. Typically the size of these S′′ groups are within 2 carbons of each other. Thus a cyclopentadienyl substituted at the 2 and the 5 positions with methyl and ethyl respectively, or substituted at the 3 and the 4 positions with hexyl and octyl, respectively, would be considered symmetric. Likewise, the cyclopentadienyl ring may be substituted at all four sites with S′′ groups and be considered symmetric as long as each of the symmetrical pairs are of similar steric bulk. Additionally, two adjacent S′′-groups in the 3 and 4 position may be linked to form a ring provided that the new ring is also symmetrically substituted.

Catalyst systems of this type are known to impart 2,1-mistakes when incorporating C3 and higher α-olefins. The pre-catalysts where S′ is bonded to the nitrogen ligand (J) via a 3° carbon (for example when S′ is tert-butyl or 1-adamantyl) have fewer 2,1-mistakes then when S′ is bonded to the nitrogen ligand (J) via a 1° carbon (for example when S′ is n-butyl, methyl, or benzyl) or 2° carbon (for example when S′ is cyclododecyl, cyclohexyl, or sec-butyl). The 2,1-mistakes in the polymer backbone impart (CH2)2 units that can be beneficial to the polymer properties. Polymers of this type, the characterization of such polymers and the catalyst systems used to produce such polymers are described in U.S. Pat. No. 5,723,560 and is incorporated herein by reference. Lower Mw versions of such polymers can be produced by changing process condition, for example, by increasing reactor temperature.
Preferred mono-cyclopentadienyl transition metal compounds which, according to the present invention, provide catalyst systems which are specific to the production of atactic poly-α-olefins include:

    dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(s-butylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(n-butylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, diethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dichloride, diethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, diethylsilyl(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dichloride, diethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride, diethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)titanium dichloride, methylene(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dichloride, methylene(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, methylene(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dichloride, methylene(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride, methylene(tetramethylcyclopentadienyl)(t-butylamido)titanium dichloride, ethylene(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dichloride, ethylene(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, ethylene(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dichloride, ethylene(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride, ethylene(tetramethylcyclopentadienyl)(t-butylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl, dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl, dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl, dimethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)titanium dimethyl, dimethylsilyl(tetramethylcyclopentadienyl)(s-butylamido)titanium dimethyl, dimethylsilyl(tetramethylcyclopentadienyl)(n-butylamido)titanium dimethyl, dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, diethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl, diethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, diethylsilyl(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl, diethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl, diethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)titanium dimethyl, methylene(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl, methylene(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, methylene(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl, methylene(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl, methylene(tetramethylcyclopentadienyl)(t-butylamido)titanium dimethyl, ethylene(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl, ethylene(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, ethylene(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl, ethylene(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl, ethylene(tetramethylcyclopentadienyl)(t-butylamido)titanium dimethyl, dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclododecylamido)titanium dichloride, dimethylsilyl(2,5-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclohexylamido)titanium dichloride, dimethylsilyl(2,5-dimethylcyclopentadienyl)(1-adamantylamido)titanium dichloride, dimethylsilyl(2,5-dimethylcyclopentadienyl)(t-butylamido)titanium dichloride, dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclododecylamido)titanium dichloride, dimethylsilyl(3,4-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclohexylamido)titanium dichloride, dimethylsilyl(3,4-dimethylcyclopentadienyl)(1-adamantylamido)titanium dichloride, dimethylsilyl(3,4-dimethylcyclopentadienyl)(t-butylamido)titanium dichloride, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclododecylamido)titanium dichloride, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclohexylamido)titanium dichloride, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(1-adamantylamido)titanium dichloride, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(t-butylamido)titanium dichloride, dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclododecylamido)titanium dichloride, dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclohexylamido)titanium dichloride, dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(1-adamantylamido)titanium dichloride, dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(t-butylamido)titanium dichloride, dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclododecylamido)titanium dichloride, dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclohexylamido)titanium dichloride, dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(1-adamantylamido)titanium dichloride, dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(t-butylamido)titanium dichloride, dimethylsilyl(2-tetrahydroindenyl)(cyclododecylamido)titanium dichloride, dimethylsilyl(2-tetrahydroindenyl)(exo-2-norbornylamido)titanium dichloride, dimethylsilyl(2-tetrahydroindenyl)(cyclohexylamido) titanium dichloride, dimethylsilyl(2-tetrahydroindenyl)(1-adamantylamido)titanium dichloride, dimethylsilyl(2-tetrahydroindenyl)(t-butylamido)titanium dichloride, dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclododecylamido) titanium dimethyl, dimethylsilyl(2,5-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl, dimethylsilyl(2,5-dimethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl, dimethylsilyl(2,5-dimethylcyclopentadienyl)(t-butylamido)titanium dimethyl, dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl, dimethylsilyl(3,4-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl, dimethylsilyl(3,4-dimethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl, dimethylsilyl(3,4-dimethylcyclopentadienyl)(t-butylamido)titanium dimethyl, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclododecylamido)titanium dimethyl, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclohexylamido)titanium dimethyl, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(1-adamantylamido)titanium dimethyl, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(t-butylamido)titanium dimethyl, dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclododecylamido)titanium dimethyl, dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclohexylamido)titanium dimethyl, dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(1-adamantylamido)titanium dimethyl, dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(t-butylamido)titanium dimethyl, dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclododecylamido)titanium dimethyl, dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclohexylamido)titanium dimethyl, dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(1-adamantylamido)titanium dimethyl, dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(t-butylamido)titanium dimethyl, dimethylsilyl(2-tetrahydroindenyl)(cyclododecylamido)titanium dimethyl, dimethylsilyl(2-tetrahydroindenyl)(exo-2-norbornylamido)titanium dimethyl, dimethylsilyl(2-tetrahydroindenyl)(cyclohexylamido)titanium dimethyl, dimethylsilyl(2-tetrahydroindenyl)(1-adamantylamido)titanium dimethyl, dimethylsilyl(2-tetrahydroindenyl)(t-butylamido)titanium dimethyl and the like.


The most preferred species are: dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl, dimethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)titanium dimethyl, dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl, dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl, and dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl.
Additionally, at higher reaction temperatures, some catalysts that produce syndiotactic poly-α-olefin at lower temperatures, will produce virtually non-crystalline poly-α-olefins at higher temperatures. The choice of transition metal component for this amorphous polymer fraction is a subset of the transition metal component of equations 8–9. Preferred components of this type are illustrated in equation 19:




wherein A′, M, X1 and X2 are as previously defined. Substituents S′′v and S′′′v are independently defined as S′′ in equations 8–9 where the subscript “v” denotes the carbon atom on the Cp-ring or Flu-ring (fluorenyl-ring) to which the substituent is bonded.

Preferably metallocene precursors for producing poly-α-olefins having largely amorphous character (when used as catalysts under higher reactor temperature conditions) are those of Equation 19 where S′′′v are independently chosen such that the metallocene framework has a plane of symmetry containing the metal center and bisecting the Flu- and Cp-rings. The A′ ligand need not be symmetrical—for example dimethylsilyl or methylphenylsilyl will not effect the stereochemisty of the polymer produced. Substituent S′′′v is defined to be the same as S′′ in equation 8–9 where the subscript “v” denotes the carbon atom on the cyclopentadienyl ring to which the substituent is bonded and where there can be zero, two or four substituents, S′′′, on the cyclopentadienyl ring provided that the cyclopentadienyl ring is symmetrically substituted. Symmetrically substituted is defined to mean that the cyclopentadienyl ring is substituted in the 2 and 5 positions and/or 3 and 4 positions with S′′′ groups that are of approximately of the same steric bulk. Typically the size of these S′′′ groups are within 2 carbons of each other. Thus a cyclopentadienyl substituted at the 2 and the 5 positions with methyl and ethyl respectively, or substituted at the 3 and the 4 positions with hexyl and octyl, respectively, would be considered symmetric. Likewise, the cyclopentadienyl ring may be substituted at all four sites with S′′′ groups and be considered symmetric as long as each of the symmetrical pairs are of similar steric bulk. Additionally, two adjacent S′′′-groups in the 3 and 4 position may be linked to form a ring provided that the new ring is also symmetrically substituted. Because of the distant placement of the S′′v substituents on the fluorenyl ring, these substitutents need not be symmetrically placed on the fluorenyl ring. Hence, the fluorenyl ring may be substituted with form 0–7 substituents that may be the same or different. Two or more adjacent S′′-groups may optionally be linked to form a ring.
Preferred metallocene transition metal compounds which, according to the present invention, provide catalyst systems which are specific to the production of amorphous or low crystallinity poly-α-olefins include: isopropylidene(cyclopentadienyl)(fluorenyl)zirconium dichloride, isopropylidene(cyclopentadienyl)(fluorenyl)zirconium dimethyl, methylene(cyclopentadienyl)(fluorenyl)zirconium dichloride, methylene(cyclopentadienyl)(fluorenyl)zirconium dimethyl, diphenylmethylene(cyclopentadienyl)(fluorenyl)zirconium dichloride, diphenylmethylene(cyclopentadienyl)(fluorenyl)zirconium dimethyl, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(fluorenyl)zirconium dichloride, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(fluorenyl)zirconium dimethyl, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(fluorenyl)zirconium dichloride, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(fluorenyl)zirconium dimethyl, diphenylsilyl(cyclopentadienyl)(fluorenyl)zirconium dichloride, diphenylsilyl(cyclopentadienyl)(fluorenyl)zirconium dimethyl, dimethylsilyl(cyclopentadienyl)(fluorenyl)zirconium dichloride, dimethylsilyl(cyclopentadienyl)(fluorenyl)zirconium dimethyl, methylphenylsilyl(cyclopentadienyl)(fluorenyl)zirconium dichloride, methylphenylsilyl(cyclopentadienyl)(fluorenyl)zirconium dimethyl, isopropylidene(cyclopentadienyl)(fluorenyl)hafnium dichloride, isopropylidene(cyclopentadienyl)(fluorenyl)hafnium dimethyl, methylene(cyclopentadienyl)(fluorenyl)hafnium dichloride, methylene(cyclopentadienyl)(fluorenyl)hafnium dimethyl, diphenylmethylene(cyclopentadienyl)(fluorenyl)hafnium dichloride, diphenylmethylene(cyclopentadienyl)(fluorenyl)hafnium dimethyl, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(fluorenyl)hafnium dichloride, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(fluorenyl)hafnium dimethyl, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(fluorenyl)hafnium dichloride, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(fluorenyl)hafnium dimethyl, diphenylsilyl(cyclopentadienyl)(fluorenyl)hafnium dichloride, diphenylsilyl(cyclopentadienyl)(fluorenyl)hafnium dimethyl, dimethylsilyl(cyclopentadienyl)(fluorenyl)hafnium dichloride, dimethylsilyl(cyclopentadienyl)(fluorenyl)hafnium dimethyl, methylphenylsilyl(cyclopentadienyl)(fluorenyl)hafnium dichloride, methylphenylsilyl(cyclopentadienyl)(fluorenyl)hafnium dimethyl, isopropylidene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dichloride, isopropylidene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dimethyl, methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dichloride, methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dimethyl, diphenylmethylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dichloride, diphenylmethylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dimethyl, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dichloride, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dimethyl, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dichloride, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dimethyl, diphenylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dichloride, diphenylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dimethyl, dimethylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dichloride, dimethylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dimethyl, methylphenylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dichloride, methylphenylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dimethyl, isopropylidene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dichloride, isopropylidene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dimethyl, methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dichloride, methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dimethyl, diphenylmethylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dichloride, diphenylmethylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dimethyl, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dichloride, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dimethyl, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dichloride, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dimethyl, diphenylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dichloride, diphenylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dimethyl, dimethylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dichloride, dimethylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dimethyl, methylphenylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dichloride, methylphenylsilyl(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dimethyl, isopropylidene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dichloride, isopropylidene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dimethyl, methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dichloride, methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dimethyl, diphenylmethylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dichloride, diphenylmethylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dimethyl, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dichloride, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dimethyl, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dichloride, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dimethyl, diphenylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dichloride, diphenylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dimethyl, dimethylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dichloride, dimethylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dimethyl, methylphenylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dichloride, methylphenylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dimethyl, isopropylidene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dichloride, isopropylidene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dimethyl, methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dichloride, methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dimethyl, diphenylmethylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dichloride, diphenylmethylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dimethyl, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dichloride, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dimethyl, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dichloride, di(p-trimethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dimethyl, diphenylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dichloride, diphenylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dimethyl, dimethylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dichloride, dimethylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dimethyl, methylphenylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dichloride, methylphenylsilyl(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dimethyl, and the like.
The most preferred species are: di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dichloride, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dichloride, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)zirconium dimethyl, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,8-di-t-butylfluorenyl)hafnium dimethyl, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dichloride, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dichloride, di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)zirconium dimethyl, and di(p-triethylsilylphenyl)methylene(cyclopentadienyl)(3,3,6,6,9,9,12,12-octamethyl-4,4,5,5,8,8,9,9-octahydrodibenzyl[b,h]fluorenyl)hafnium dimethyl.
Additionally, compounds of formula 20 may be used to produce the amorphous polymer fraction.




In this case, S′′v are independently chosen such that the metallocene framework has a plane of symmetry that bisects M and A′. Substituents S′′v are independently defined to be the same as S′′ in equation 8–9 where the subscript “v” denotes the carbon atom on the cyclopentadienyl ring to which the substituent is bonded and where there can be zero to four substituents, S′′, on the cyclopentadienyl ring provided that the cyclopentadienyl ring is symmetrically substituted. Symmetrically substituted is defined to mean that the cyclopentadienyl ring is substituted in the 2 and 2′positions and/or 3 and 3′ positions and/or 4 and 4′ positions and/or 5 and 5′ positions with S′′ groups that are of approximately of the same steric bulk. Typically the size of these S′′ groups are within 2 carbons of each other. Thus a cyclopentadienyl substituted at the 2 and the 2′ positions with methyl and ethyl respectively, or substituted at the 3 and the 3′ positions with hexyl and octyl, respectively, would be considered symmetric. Likewise, the cyclopentadienyl ring may be substituted at all four sites with S′′ groups and be considered symmetric as long as each of the symmetrical pairs are of similar steric bulk. Additionally, two adjacent S′′-groups may be linked to form a ring provided that the new ring is also symmetrically substituted. Such complexes such as meso-Me2Si(indenyl)2ZrMe2 meso-CH2CH2(indenyl)2ZrCl2 are well known in the art and generally produce amorphous polymers useful in this invention.

Preferred meso-metallocene compounds which, according to the present invention, provide catalyst systems which are specific to the production of amorphous poly-α-olefins include the meso versions of: dimethylsilylbis(indenyl)zirconium dichloride, dimethylsilylbis(indenyl)zirconium dimethyl, diphenylsilylbis(indenyl)zirconium dichloride, diphenylsilylbis(indenyl)zirconium dimethyl, methylphenylsilylbis(indenyl)zirconium dichloride, methylphenylsilylbis(indenyl)zirconium dimethyl, ethylenebis(indenyl)zirconium dichloride, ethylenebis(indenyl)zirconium dimethyl, methylenebis(indenyl)zirconium dichloride, methylenebis(indenyl)zirconium dimethyl, dimethylsilylbis(indenyl)hafnium dichloride, dimethylsilylbis(indenyl)hafnium dimethyl, diphenylsilylbis(indenyl)hafnium dichloride, diphenylsilylbis(indenyl)hafnium dimethyl, methylphenylsilylbis(indenyl)hafnium dichloride, methylphenylsilylbis(indenyl)hafnium dimethyl, ethylenebis(indenyl)hafnium dichloride, ethylenebis(indenyl)hafnium dimethyl, methylenebis(indenyl)hafnium dichloride, methylenebis(indenyl)hafnium dimethyl, dimethylsilylbis(tetrahydroindenyl)zirconium dichloride, dimethylsilylbis(tetrahydroindenyl)zirconium dimethyl, diphenylsilylbis(tetrahydroindenyl)zirconium dichloride, diphenylsilylbis(tetrahydroindenyl)zirconium dimethyl, methylphenylsilylbis(tetrahydroindenyl)zirconium dichloride, methylphenylsilylbis(tetrahydroindenyl)zirconium dimethyl, ethylenebis(tetrahydroindenyl)zirconium dichloride, ethylenebis(tetrahydroindenyl)zirconium dimethyl, methylenebis(tetrahydroindenyl)zirconium dichloride, methylenebis(tetrahydroindenyl)zirconium dimethyl, dimethylsilylbis(tetrahydroindenyl)hafnium dichloride, dimethylsilylbis(tetrahydroindenyl)hafnium dimethyl, diphenylsilylbis(tetrahydroindenyl)hafnium dichloride, diphenylsilylbis(tetrahydroindenyl)hafnium dimethyl, methylphenylsilylbis(tetrahydroindenyl)hafnium dichloride, methylphenylsilylbis(tetrahydroindenyl)hafnium dimethyl, ethylenebis(tetrahydroindenyl)hafnium dichloride, ethylenebis(tetrahydroindenyl)hafnium dimethyl, methylenebis(tetrahydroindenyl)hafnium dichloride, methylenebis(tetrahydroindenyl)hafnium dimethyl, dimethylsilylbis(2-methylindenyl)zirconium dichloride, dimethylsilylbis(2-methylindenyl)zirconium dimethyl, diphenylsilylbis(2-methylindenyl)zirconium dichloride, diphenylsilylbis(2-methylindenyl)zirconium dimethyl, methylphenylsilylbis(2-methylindenyl)zirconium dichloride, methylphenylsilylbis(2-methylindenyl)zirconium dimethyl, ethylenebis(2-methylindenyl)zirconium dichloride, ethylenebis(2-methylindenyl)zirconium dimethyl, methylenebis(2-methylindenyl)zirconium dichloride, methylenebis(2-methylindenyl)zirconium dimethyl, dimethylsilylbis(2-methylindenyl)hafnium dichloride, dimethylsilylbis(2-methylindenyl)hafnium dimethyl, diphenylsilylbis(2-methylindenyl)hafnium dichloride, diphenylsilylbis(2-methylindenyl)hafnium dimethyl, methylphenylsilylbis(2-methylindenyl)hafnium dichloride, methylphenylsilylbis(2-methylindenyl)hafnium dimethyl, ethylenebis(2-methylindenyl)hafnium dichloride, ethylenebis(2-methylindenyl)hafnium dimethyl, methylenebis(2-methylindenyl)hafnium dichloride, methylenebis(2-methylindenyl)hafnium dimethyl, dimethylsilylbis(2-methyl-4-phenylindenyl)zirconium dichloride, diphenylsilylbis(2-methyl-4-phenylindenyl)zirconium dimethyl, diphenylsilylbis(2-methyl-4-phenylindenyl)zirconium dichloride, diphenylsilylbis(2-methyl-4-phenylindenyl)zirconium dimethyl, methylphenylsilylbis(2-methyl-4-phenylindenyl)zirconium dichloride, methylphenylsilylbis(2-methyl-4-phenylindenyl)zirconium dimethyl, ethylenebis(2-methyl-4-phenylindenyl)zirconium dichloride, ethylenebis(2-methyl-4-phenylindenyl)zirconium dimethyl, methylenebis(2-methyl-4-phenylindenyl)zirconium dichloride, methylenebis(2-methyl-4-phenylindenyl)zirconium dimethyl, dimethylsilylbis(2-methyl-4-phenylindenyl)hafnium dichloride, dimethylsilylbis(2-methyl-4-phenylindenyl)hafnium dimethyl, diphenylsilylbis(2-methyl-4-phenylindenyl)hafnium dichloride, diphenylsilylbis(2-methyl-4-phenylindenyl)hafnium dimethyl, methylphenylsilylbis(2-methyl-4-phenylindenyl)hafnium dichloride, methylphenylsilylbis(2-methyl-4-phenylindenyl)hafnium dimethyl, ethylenebis(2-methyl-4-phenylindenyl)hafnium dichloride, ethylenebis(2-methyl-4-phenylindenyl)hafnium dimethyl, methylenebis(2-methyl-4-phenylindenyl)hafnium dichloride, methylenebis(2-methyl-4-phenylindenyl)hafnium dimethyl, dimethylsilylbis(4,7-dimethylindenyl)zirconium dichloride, dimethylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, diphenylsilylbis(4,7-dimethylindenyl)zirconium dichloride, diphenylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, methylphenylsilylbis(4,7-dimethylindenyl)zirconium dichloride, methylphenylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, ethylenebis(4,7-dimethylindenyl)zirconium dichloride, ethylenebis(4,7-dimethylindenyl)zirconium dimethyl, methylenebis(4,7-dimethylindenyl)zirconium dichloride, methylenebis(4,7-dimethylindenyl)zirconium dimethyl, dimethylsilylbis(4,7-dimethylindenyl)hafnium dichloride, dimethylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, diphenylsilylbis(4,7-dimethylindenyl)hafnium dichloride, diphenylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, methylphenylsilylbis(4,7-dimethylindenyl)hafnium dichloride, methylphenylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, ethylenebis(4,7-dimethylindenyl)hafnium dichloride, ethylenebis(4,7-dimethylindenyl)hafnium dimethyl, methylenebis(4,7-dimethylindenyl)hafnium dichloride, methylenebis(4,7-dimethylindenyl)hafnium dimethyl, and the like.
The most preferred species are the racemic versions of: dimethylsilylbis(indenyl)zirconium dichloride, dimethylsilylbis(indenyl)zirconium dimethyl, ethylenebis(indenyl)zirconium dichloride, ethylenebis(indenyl)zirconium dimethyl, dimethylsilylbis(indenyl)hafnium dichloride, dimethylsilylbis(indenyl)hafnium dimethyl, ethylenebis(indenyl)hafnium dichloride, ethylenebis(indenyl)hafnium dimethyl, dimethylsilylbis(tetrahydroindenyl)zirconium dichloride, dimethylsilylbis(tetrahydroindenyl)zirconium dimethyl, ethylenebis(tetrahydroindenyl)zirconium dichloride, ethylenebis(tetrahydroindenyl)zirconium dimethyl, dimethylsilylbis(tetrahydroindenyl)hafnium dichloride, dimethylsilylbis(tetrahydroindenyl)hafnium dimethyl, ethylenebis(tetrahydroindenyl)hafnium dichloride, ethylenebis(tetrahydroindenyl)hafnium dimethyl, dimethylsilylbis(2-methylindenyl)zirconium dichloride, dimethylsilylbis(2-methylindenyl)zirconium dimethyl, ethylenebis(2-methylindenyl)zirconium dichloride, ethylenebis(2-methylindenyl)zirconium dimethyl, dimethylsilylbis(2-methylindenyl)hafnium dichloride, dimethylsilylbis(2-methylindenyl)hafnium dimethyl, ethylenebis(2-methylindenyl)hafnium dichloride, and ethylenebis(2-methylindenyl)hafnium dimethyl
When two transition metal compound based catalysts are used in one reactor as a mixed catalyst system, the two transition metal compounds should be chosen such that the two are compatible. A simple screening method such as by 1H or 13C NMR, known to those of ordinary skill in the art, can be used to determine which transition metal compounds are compatible.
It is preferable to use the same activator for the transition metal compounds, however, two different activators, such as a non-coordinating anion activator and an alumoxane, can be used in combination. If one or more transition metal compounds contain an X1 or X2 ligand which is not a hydride, hydrocarbyl, or substituted hydrocarbyl, then the alumoxane should be contacted with the transition metal compounds prior to addition of the non-coordinating anion activator.
Particularly preferred combinations of transition metal compounds include:
(1) Me2Si(Me4C5)(N-c-C12H23)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2(2-Me-4-PhInd=2-methyl-4-phenylindenyl, c-C12H23=cyclododecyl, Me4C5-tetramethylcyclopentadienyl) activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(2) Me2Si(Me4C5)(N-c-C12H23)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(3) Me2Si(Me4C5)(N-c-C12H23)TiCl2 and rac-Me2Si(2-MeInd)2ZrCl2 (2-MeInd=2-methyl-indenyl) activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(4) Me2Si(Me4C5)(N-c-C12H23)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(5) Me2Si(Me4C5)(N-1-adamantyl)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(6) Me2Si(Me4C5)(N-1-adamantyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(7) Me2Si(Me4C5)(N-1-adamantyl)TiCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(8) Me2Si(Me4C5)(N-1-adamantyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(9) Me2Si(Me4C5)(N-t-butyl)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(10) Me2Si(Me4C5)(N-t-butyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(11) Me2Si(Me4C5)(N-t-butyl)TiCl2 and rac-Me2Si(2-MeInd) activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(12) Me2Si(Me4C5)(N-t-butyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(13) Me2Si(Me4C5)(N-exo-norbornyl)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(14) Me2Si(Me4C5)(N-exo-norbornyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(15) Me2Si(Me4C5)(N-exo-norbornyl)TiCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(16) Me2Si(Me4C5)(N-exo-norbornyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(17) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 (3,6-di-t-BuFlu=3,8-di-tert-butylfluorenyl, Cp=cyclopentadienyl) activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(18) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(19) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(20) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakispentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(21) meso-CH2CH2(Ind)2ZrCl2 and rac-Me2Si(H4Ind)2ZrCl2 (Ind=indenyl, H4Ind=tetrahydroindenyl) activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(22) meso-CH2CH2(Ind)2ZrMe2 and rac-Me2Si(H4Ind)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(23) meso-CH2CH2(Ind)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(24) meso-CH2CH2(Ind)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(25) meso-Me2Si(Ind)2ZrCl2 and rac-Me2Si(H4Ind)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(26) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(H4Ind)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(27) meso-Me2Si(Ind)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(28) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(29) meso-Me2Si(2-MeInd)2ZrCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(30) meso-Me2Si(2-MeInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(31) meso-Me2Si(2-MeInd)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(32) meso-Me2Si(2-MeInd)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(33) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(34) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(35) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(36) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(37) meso-Me2Si(2-Me-4-PhInd)2ZrCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(38) meso-Me2Si(2-Me-4-PhInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(39) meso-CH2CH2(2-Me-4-PhInd)2ZrCl2 and rac-CH2CH2(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(40) meso-CH2CH2(2-Me-4-PhInd)2ZrMe2 and rac-CH2CH2(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(41) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-CH2CH2(2-MePhInd)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(42) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-CH2CH2(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(43) meso-CH2CH2(Ind)2ZrCl2 and rac-CH2CH2(Ind)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(44) meso-CH2CH2(Ind)2ZrMe2 and rac-CH2CH2(Ind)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(45) meso-Me2Si(Ind)2ZrCl2 and rac-Me2Si(Ind)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(46) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(Ind)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(47) meso-CH2CH2(Ind)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 (4,7-Me2Ind=4,7-dimethylindenyl) activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(48) meso-CH2CH2(Ind)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(49) meso-Me2Si(Ind)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(50) meso-Me2Si(Ind)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(51) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 (4,7-Me2Ind=4,7-dimethylindenyl) activated with an alumoxane, such as methylalumoxane or modified methylalumoxane;
(52) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(53) meso-Me2Si(2-MeInd)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 activated with an alumoxane, such as methylalumoxane or modified methylalumoxane; and
(54) meso-Me2Si(2-MeInd)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator, such as N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron or triphenylcarbonium tetrakis(pentaflourophenyl)boron.
The two transition metal compounds (pre-catalysts) may be used in any ratio. Preferred molar ratios of (A) transition metal compound to produce amorphous polymer to (B) transition metal compound to produce crystalline polymer fall within the range of (A:B) 1:1000 to 1000:1, alternatively 1:100 to 500:1, alternatively 1:10 to 200:1, alternatively 1:1 to 100:1, and alternatively 1:1 to 75:1, and alternatively 5:1 to 50:1. The particular ratio chosen will depend on the exact pre-catalysts chosen, the method of activation, and the end product desired. In a particular embodiment, when using the two pre-catalysts (A—“amorphous polymer producing precatalyst” and B—“crystalline polymer producing catalyst”), where both are activated with the same activator, the preferred mole percents, based upon the molecular weight of the pre-catalysts, are 10 to 99.9% A to 0.1 to 90% B, alternatively 25 to 99% A to 0.5 to 50% B, alternatively 50 to 99% A to 1 to 25% B, and alternatively 75 to 99% A to 1 to 10% B.
In general the combined pre-catalyst compounds and the activator are combined in ratios of about 1:10,000 to about 10:1. When alumoxane or aluminum alkyl activators are used, the combined pre-catalyst-to-activator molar ratio is from 1:5000 to 10:1, alternatively from 1:1000 to 10:1; alternatively, 1:500 to 2:1; or 1:300 to 1:1. When ionizing activators are used, the combined pre-catalyst-to-activator molar ratio is from 10:1 to 1:10; 5:1 to 1:5; 2:1 to 1:2; or 1.2:1 to 1:1. Multiple activators may be used, including using mixes of alumoxanes or aluminum alkyls with ionizing activators.
In another preferred embodiment a third catalyst (pre-catalyst plus activator) is present in the processes described above. The third catalyst may be any of the pre-catalyst components listed herein. Preferred third pre-catalysts include those that are capable of producing waxes. Preferred examples include:

    rac-dimethylsilylbis(4,7-dimethylindenyl)hafnium dichloride, rac-dimethylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, rac-dimethylsilylbis(4,7-dimethylindenyl)zirconium dichloride, rac-dimethylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, rac-dimethylsilylbis(indenyl)hafnium dichloride, rac-dimethylsilylbis(indenyl)hafnium dimethyl, rac-dimethylsilylbis(indenyl)zirconium dichloride, rac-dimethylsilylbis(indenyl)zirconium dimethyl, rac-dimethylsilylbis(tetrahydroindenyl)hafnium dichloride, rac-dimethylsilylbis(tetrahydroindenyl)hafnium dimethyl, rac-dimethylsilylbis(tetrahydroindenyl)zirconium dichloride, rac-dimethylsilylbis(tetrahydroindenyl)zirconium dimethyl, rac-diphenylsilylbis(4,7-dimethylindenyl)hafnium dichloride, rac-diphenylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, rac-diphenylsilylbis(4,7-dimethylindenyl)zirconium dichloride, rac-diphenylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, rac-diphenylsilylbis(indenyl)hafnium dichloride, rac-diphenylsilylbis(indenyl)hafnium dimethyl, rac-diphenylsilylbis(indenyl)zirconium dichloride, rac-diphenylsilylbis(indenyl)zirconium dimethyl, rac-diphenylsilylbis(tetrahydroindenyl)hafnium dichloride, rac-diphenylsilylbis(tetrahydroindenyl)hafnium dimethyl, rac-diphenylsilylbis(tetrahydroindenyl)zirconium dichloride, rac-diphenylsilylbis(tetrahydroindenyl)zirconium dimethyl, rac-methylphenylsilylbis(4,7-dimethylindenyl)hafnium dichloride, rac-methylphenylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, rac-methylphenylsilylbis(4,7-dimethylindenyl)zirconium dichloride, rac-methylphenylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, rac-methylphenylsilylbis(indenyl)hafnium dichloride, rac-methylphenylsilylbis(indenyl)hafnium dimethyl, rac-methylphenylsilylbis(indenyl)zirconium dichloride, rac-methylphenylsilylbis(indenyl)zirconium dimethyl, rac-methylphenylsilylbis(tetrahydroindenyl)hafnium dichloride, rac-methylphenylsilylbis(tetrahydroindenyl)hafnium dimethyl, rac-methylphenylsilylbis(tetrahydroindenyl)zirconium dichloride, rac-methylphenylsilylbis(tetrahydroindenyl)zirconium dimethyl, rac-ethylenebis(4,7-dimethylindenyl)hafnium dichloride, rac-ethylenebis(4,7-dimethylindenyl)hafnium dimethyl, rac-ethylenebis(4,7-dimethylindenyl)zirconium dichloride, rac-ethylenebis(4,7-dimethylindenyl)zirconium dimethyl, rac-ethylenebis(indenyl)hafnium dichloride, rac-ethylenebis(indenyl)hafnium dimethyl, rac-ethylenebis(indenyl)zirconium dichloride, rac-ethylenebis(indenyl)zirconium dimethyl, rac-ethylenebis(tetrahydroindenyl)hafnium dichloride, rac-ethylenebis(tetrahydroindenyl)hafnium dimethyl, rac-ethylenebis(tetrahydroindenyl)zirconium dichloride, and rac-ethylenebis(tetrahydroindenyl)zirconium dimethyl


Three transition metal compounds (pre-catalysts) may be used in any ratio. Preferred molar ratios of (A) transition metal compound to produce amorphous polypropylene to (B) transition metal compound to produce crystalline polypropylene to (C) transition metal compound to produce wax fall within the range of (A:B:C) 1:1000:500 to 1000:1:1, alternatively 1:100:50 to 500:1:1, alternatively 1:10:10 to 200:1:1, alternatively 1:1:1 to 100:1:50, and alternatively 1:1:10 to 75:1:50, and alternatively 5:1:1 to 50:1:50. The particular ratio chosen will depend on the exact pre-catalysts chosen, the method of activation, and the end product desired.
Additional preferred catalysts and process are described in U.S. Pat. Nos. 6,376,410 and 6,380,122, which are incorporated by reference herein.
In another embodiment the catalyst compositions of this invention include a support material or carrier. For example, the one or more catalyst components and/or one or more activators may be deposited on, contacted with, vaporized with, bonded to, or incorporated within, adsorbed or absorbed in, or on, one or more supports or carriers.
The support material is any of the conventional support materials. Preferably the supported material is a porous support material, for example, talc, inorganic oxides and inorganic chlorides. Other support materials include resinous support materials such as polystyrene, functionalized or crosslinked organic supports, such as polystyrene divinyl benzene polyolefins or polymeric compounds, zeolites, clays, or any other organic or inorganic support material and the like, or mixtures thereof.
The preferred support materials are inorganic oxides that include those Group 2, 3, 4, 5, 13 or 14 metal oxides. The preferred supports include silica, which may or may not be dehydrated, fumed silica, alumina (WO 99/60033), silica-alumina and mixtures thereof. Other useful supports include magnesia, titania, zirconia, magnesium chloride (U.S. Pat. No. 5,965,477), montmorillonite (European Patent EP-B1 0 511 665), phyllosilicate, zeolites, talc, clays (U.S. Pat. No. 6,034,187) and the like. Also, combinations of these support materials may be used, for example, silica-chromium, silica-alumina, silica-titania and the like. Additional support materials may include those porous acrylic polymers described in EP 0 767 184 B1, which is incorporated herein by reference. Other support materials include nanocomposites as described in PCT WO 99/47598, aerogels as described in WO 99/48605, spherulites as described in U.S. Pat. No. 5,972,510 and polymeric beads as described in WO 99/50311, which are all herein incorporated by reference.
It is preferred that the support material, most preferably an inorganic oxide, has a surface area in the range of from about 10 to about 700 m2/g, pore volume in the range of from about 0.1 to about 4.0 cc/g and average particle size in the range of from about 5 to about 500 μm. More preferably, the surface area of the support material is in the range of from about 50 to about 500 m2/g, pore volume of from about 0.5 to about 3.5 cc/g and average particle size of from about 10 to about 200 μm. Most preferably the surface area of the support material is in the range is from about 100 to about 400 m2/g, pore volume from about 0.8 to about 3.0 cc/g and average particle size is from about 5 to about 100 μm. The average pore size of the carrier useful in the invention typically has pore size in the range of from 10 to 1000 Å, preferably 50 to about 500 Å, and most preferably 75 to about 350 Å.
As is well known in the art, the catalysts may also be supported together on one inert support, or the catalysts may be independently placed on two inert supports and subsequently mixed. Of the two methods, the former is preferred.
In another embodiment the support may comprise one or more types of support material which may be treated differently. For example one could use tow different silicas that had different proe volumes or had been calcined at different temperatures. Likewise one could use a silica tht had been treated with a scavenger or other additive and a silica that had not.
The stereospecific catalysts may be used to prepare macromonomer having a Mw of 100,000 or less and a crystallinity of 30% or more preferably having vinyl termini. As a specific example, a method for preparing propylene-based macromonomers having a high percentage of vinyl terminal bonds involves:

    a) contacting, in solution, propylene, optionally a minor amount of copolymerizable monomer, with a catalyst composition containing the stereorigid, activated transition metal catalyst compound at a temperature from about 80° C. to about 140° C.; and
    b) recovering isotactic or syndiotactic polypropylene chains having number average molecular weights of about 2,000 to about 30,000 Daltons.

Preferably, the solution comprises a hydrocarbon solvent. More preferably, the hydrocarbon solvent is aliphatic or aromatic. Also, the propylene monomers are preferably contacted at a temperature from 90° C. to 120° C. More preferably, a temperature from 95° C. to 115° C. is used. Most preferably, the propylene monomers are contacted at a temperature from 100° C. to 110° C. Reactor pressure generally can vary from atmospheric to 345 MPa, preferably to 182 MPa. The reactions can be run in batch or in continuous mode. Conditions for suitable slurry-type reactions will also be suitable and are similar to solution conditions, the polymerization typically being run in liquid propylene under pressures suitable to such.



The catalyst pair selection criteria were discussed earlier. One catalyst typically is stereospecific with the ability to produce significant population of vinyl-terminated macromonomers, the other typically is aspecific and capable of incorporating the reactive macromonomers. In general it is believed that C2 symmetric bulky ligand metallocene catalysts can produce vinyl terminated isotactic polypropylene macromonomers. Catalysts that favor betamethyl-elimination also often appear to also favor isotactic polypropylene macromonomer formation. Rac-dimethylsilyl bis(indenyl)hafnium dimethyl, dimethylsilyl bis(2-methyl-4-phenylindenyl)zirconium dichloride, and rac-ethylene bis(4,7-dimethylindenyl)hafnium dimethyl are catalysts capable of producing isotactic polypropylene having high vinyl chain termination for use in this invention. High temperatures, typically above 80° C., appear to positively influence vinyl termination. Likewise, Me2Si(Me4C5)(N-c-C12H23)TiMe2 and Me2Si(Me4C5)(N-c-C12H23)TiMe2 produce amorphous polypropylene useful in this invention and are believed to incorporate the vinyl terminated macromonomers to also produce a grafted structure of scPP side chains on an amorphous backbone.
In alternate embodiments dienes such as 1,9-decadiene are introduced into the reaction zone to promote the production of vinyl-terminated aPP and scPP macromonomers that help increase the population of branch-block species.
Polymerization Processes
The catalysts and catalyst systems described above are suitable for use in a solution, bulk, gas or slurry polymerization process or a combination thereof, preferably solution phase or bulk phase polymerization process.
In one embodiment, this invention is directed toward the solution, bulk, slurry or gas phase polymerization reactions involving the polymerization of one or more of monomers having from 3 to 30 carbon atoms, preferably 3–12 carbon atoms, and more preferably 3 to 8 carbon atoms. Preferred monomers include one or more of propylene, butene-1, pentene-1,4-methyl-pentene-1, hexene-1, octene-1, decene-1,3-methyl-pentene-1, and cyclic olefins or a combination thereof. Other monomers can include vinyl monomers, diolefins such as dienes, polyenes, norbornene, norbornadiene, vinyl norbornene, ethylidene norbornene monomers. Preferably a homopolymer or copolymer of propylene is produced. In another embodiment, both a homopolymer of propylene and a copolymer of propylene and one or more of the monomers listed above are produced.
One or more reactors in series or in parallel may be used in the present invention. Catalyst component and activator may be delivered as a solution or slurry, either separately to the reactor, activated in-line just prior to the reactor, or preactivated and pumped as an activated solution or slurry to the reactor. A preferred operation is two solutions activated in-line. For more information on methods to introduce multiple catalsyts into reactors, please see U.S. Pat. No. 6,399,722, and WO0130862A1. While these references may emphasize gas phase reactors, the techniques described are equally applicable to other types of reactors, including continuous stirred tank reactors, slurry loop reactors and the like. Polymerizations are carried out in either single reactor operation, in which monomer, comonomers, catalyst/activator, scavenger, and optional modifiers are added continuously to a single reactor or in series reactor operation, in which the above components are added to each of two or more reactors connected in series. The catalyst components can be added to the first reactor in the series. The catalyst component may also be added to both reactors, with one component being added to first reaction and another component to other reactors.
In one embodiment 500 ppm or less of hydrogen is added to the polymerization, or 400 ppm or less, or 300 ppm or less. In other embodiments at least 50 ppm of hydrogen is added to the polymerization, or 100 ppm or more, or 150 ppm or more.
Gas Phase Polymerization
Generally, in a fluidized gas bed process used for producing polymers, a gaseous stream containing one or more monomers is continuously cycled through a fluidized bed in the presence of a catalyst under reactive conditions. The gaseous stream is withdrawn from the fluidized bed and recycled back into the reactor. Simultaneously, polymer product is withdrawn from the reactor and fresh monomer is added to replace the polymerized monomer. (See for example U.S. Pat. Nos. 4,543,399, 4,588,790, 5,028,670, 5,317,036, 5,352,749, 5,405,922, 5,436,304, 5,453,471, 5,462,999, 5,616,661 and 5,668,228 all of which are fully incorporated herein by reference.)
Slurry Phase Polymerization
A slurry polymerization process generally operates between 1 to about 50 atmosphere pressure range (15 psi to 735 psi, 103 kPa to 5068 kPa) or even greater and temperatures in the range of 0° C. to about 120° C. In a slurry polymerization, a suspension of solid, particulate polymer is formed in a liquid polymerization diluent medium to which monomer and comonomers along with catalyst are added. The suspension including diluent is intermittently or continuously removed from the reactor where the volatile components are separated from the polymer and recycled, optionally after a distillation, to the reactor. The liquid diluent employed in the polymerization medium is typically an alkane having from 3 to 7 carbon atoms, preferably a branched alkane. The medium employed should be liquid under the conditions of polymerization and relatively inert. When a propane medium is used the process must be operated above the reaction diluent critical temperature and pressure. Preferably, a hexane or an isobutane medium is employed.
In one embodiment, a preferred polymerization technique useful in the invention is referred to as a particle form polymerization, or a slurry process where the temperature is kept below the temperature at which the polymer goes into solution. Such technique is well known in the art, and described in for instance U.S. Pat. No. 3,248,179 which is fully incorporated herein by reference. The preferred temperature in the particle form process is within the range of about 85° C. to about 110° C. Two preferred polymerization methods for the slurry process are those employing a loop reactor and those utilizing a plurality of stirred reactors in series, parallel, or combinations thereof. Non-limiting examples of slurry processes include continuous loop or stirred tank processes. Also, other examples of slurry processes are described in U.S. Pat. No. 4,613,484, which is herein fully incorporated by reference.
In another embodiment, the slurry process is carried out continuously in a loop reactor. The catalyst, as a slurry in isobutane or as a dry free flowing powder, is injected regularly to the reactor loop, which is itself filled with circulating slurry of growing polymer particles in a diluent of isobutane containing monomer and comonomer. Hydrogen, optionally, may be added as a molecular weight control. (In one embodiment 500 ppm or less of hydrogen is added, or 400 ppm or less or 300 ppm or less. In other embodiments at least 50 ppm of hydrogen is added, or 100 ppm or more, or 150 ppm or more.)
The reactor is maintained at a pressure of 3620 kPa to 4309 kPa and at a temperature in the range of about 60° C. to about 104° C. depending on the desired polymer melting characterisitcs. Reaction heat is removed through the loop wall since much of the reactor is in the form of a double-jacketed pipe. The slurry is allowed to exit the reactor at regular intervals or continuously to a heated low pressure flash vessel, rotary dryer and a nitrogen purge column in sequence for removal of the isobutane diluent and all unreacted monomer and comonomers. The resulting hydrocarbon free powder is then compounded for use in various applications.
In another embodiment, the reactor used in the slurry process useful in the invention is capable of and the process useful in the invention is producing greater than 2000 lbs of polymer per hour (907 Kg/hr), more preferably greater than 5000 lbs/hr (2268 Kg/hr), and most preferably greater than 10,000 lbs/hr (4540 Kg/hr). In another embodiment the slurry reactor used in the process useful in the invention is producing greater than 15,000 lbs of polymer per hour (6804 Kg/hr), preferably greater than 25,000 lbs/hr (11,340 Kg/hr) to about 100,000 lbs/hr (45,500 Kg/hr).
In another embodiment in the slurry process useful in the invention the total reactor pressure is in the range of from 400 psig (2758 kPa) to 800 psig (5516 kPa), preferably 450 psig (3103 kPa) to about 700 psig (4827 kPa), more preferably 500 psig (3448 kPa) to about 650 psig (4482 kPa), most preferably from about 525 psig (3620 kPa) to 625 psig (4309 kPa).
In yet another embodiment in the slurry process useful in the invention the concentration of predominant monomer in the reactor liquid medium is in the range of from about 1 to 10 weight percent, preferably from about 2 to about 7 weight percent, more preferably from about 2.5 to about 6 weight percent, most preferably from about 3 to about 6 weight percent.
Another process useful in the invention is where the process, preferably a slurry process is operated in the absence of or essentially free of any scavengers, such as triethylaluminum, trimethylaluminum, tri-isobutylaluminum and tri-n-hexylaluminum and diethyl aluminum chloride, dibutyl zinc and the like. This process is described in PCT publication WO 96/08520 and U.S. Pat. No. 5,712,352, which are herein fully incorporated by reference.
In another embodiment the process is run with scavengers. Typical scavengers include trimethyl aluminum, tri-isobutyl aluminum and an excess of alumoxane or modified alumoxane.
Homgeneous, Bulk, or Solution Phase Polymerization
The catalysts described herein can be used advantageously in homogeneous solution processes. Generally this involves polymerization in a continuous reactor in which the polymer formed and the starting monomer and catalyst materials supplied, are agitated to reduce or avoid concentration gradients. Suitable processes operate above the melting point of the polymers at high pressures, from 1 to 3000 bar (10–30,000 MPa), in which the monomer acts as diluent or in solution polymerization using a solvent.
Temperature control in the reactor is obtained by balancing the heat of polymerization with reactor cooling by reactor jackets or cooling coils to cool the contents of the reactor, auto refrigeration, pre-chilled feeds, vaporization of liquid medium (diluent, monomers or solvent) or combinations of all three. Adiabatic reactors with pre-chilled feeds may also be used. The reactor temperature depends on the catalyst used. In general, the reactor temperature preferably can vary between about 30° C. and about 160° C., more preferably from about 90° C. to about 150° C., and most preferably from about 100° C. to about 140° C. Polymerization temperature may vary depending on catalyst choice. For example a diimine Ni catalyst may be used at 40° C., while a metallocene Ti catalyst can be used at 100° C. or more. In series operation, the second reactor temperature is preferably higher than the first reactor temperature. In parallel reactor operation, the temperatures of the two reactors are independent. The pressure can vary from about 1 mm Hg to 2500 bar (25,000 MPa), preferably from 0.1 bar to 1600 bar (1–16,000 MPa), most preferably from 1.0 to 500 bar (10–5000 MPa).
In one embodiment 500 ppm or less of hydrogen is added to the polymerization, or 400 ppm or less or 300 ppm or less. In other embodiments at least 50 ppm of hydrogen is added to the polymerization, or 100 ppm or more, or 150 ppm or more.
Each of these processes may also be employed in single reactor, parallel or series reactor configurations. The liquid processes comprise contacting olefin monomers with the above described catalyst system in a suitable diluent or solvent and allowing said monomers to react for a sufficient time to produce the desired polymers. Hydrocarbon solvents are suitable, both aliphatic and aromatic. Alkanes, such as hexane, pentane, isopentane, and octane, are preferred.
The process can be carried out in a continuous stirred tank reactor, batch reactor or plug flow reactor, or more than one reactor operated in series or parallel. These reactors may have or may not have internal cooling or heating and the monomer feed may or may not be refrigerated. See the general disclosure of U.S. Pat. No. 5,001,205 for general process conditions. See also, international application WO 96/33227 and WO 97/22639. All documents are incorporated by reference for US purposes for description of polymerization processes, metallocene selection and useful scavenging compounds.
This invention further relates to a continuous process to prepare an adhesive comprising:
1) combining monomer, optional solvent, catalyst and activator in a reactor system,
2) withdrawing polymer solution from the reactor system,
3) removing at least 10% solvent, if present, from the polymer solution,
4) quenching the reaction,
5) devolatilizing the polymer solution to form molten polymer,
6) combining the molten polymer and one or more additives (such as those described below) in a static mixer (in a preferred embodiment tackifer is not added or is added in amounts of less than 30 weight %, preferably less than 20 weight %, more preferably in amonts of less than 10 weight %),
7) removing the polymer combination from the static mixer, and
8) pelletizing or drumming the polymer combination;
where step 1) comprises any of the processes described above.
In another embodiment this invention relates to a continuous process to prepare an adhesive comprising:
1) combining monomer, optional solvent, catalyst and activator in a reactor system,
2) withdrawing polymer solution from the reactor system,
3) removing at least 10% solvent, if present, from the polymer solution,
4) quenching the reaction,
5) devolatilizing the polymer solution to form molten polymer,
6) combining the molten polymer and one or more additives in a static mixer,
7) removing the polymer combination from the static mixer, and
8) pelletizing or drumming the polymer combination.
In a particularly preferred embodiment, this invention relates to a continuous process to make an adhesive comprising
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 20% (preferably 5% or less) or less under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more, (preferably 40% or more) at the selected polymerization conditions;
3) contacting, in a solvent and in a reaction zone under the selected polymerization conditions, the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins, and, optionally one or more diolefins;
4) at a temperature of greater than 70° C. (preferably greater than 100° C.);
5) at a residence time of 120 minutes or less, (preferably 60 minutes or less, more preferably 30 minutes or less);
6) wherein the ratio of the first catalyst to the second catalyst is from 1:1 to 50:1 (preferably 30:1);
7) wherein the activity of the catalyst components is at least 50 kilograms of polymer per gram of the catalyst components; and wherein at least 20% of the olefins are converted to polymer;
8) withdrawing polymer solution from the reaction zone;
9) removing at least 10% solvent from the polymer solution;
10) quenching the reaction;
11) devolatilizing the polymer solution to form molten polymer;
12) combining the molten polymer and one or more additives in a static mixer;
13) removing the polymer combination from the static mixer; and
14) pelletizing or drumming the polymer combination.
In a particularly preferred embodiment, this invention relates to a continuous process to make an adhesive comprising
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 20% or less (preferably 5% or less) under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more (preferably 40% or more) at the selected polymerization conditions;
3) contacting, in a solvent and in a reaction zone under the selected polymerization conditions, the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins, and, optionally one or more diolefins;
4) at a temperature of greater than 70° C., (preferably greater than 100° C.);
5) at a residence time of 30 minutes or less;
6) wherein the ratio of the first catalyst to the second catalyst is from 1:1 to 50:1 (Preferably 30:1);
7) wherein the activity of the catalyst components is at least 50 kilograms of polymer per gram of the catalyst components; and wherein at least 50% of the olefins are converted to polymer;
8) withdrawing polymer solution from the reaction zone;
9) removing at least 10% solvent from the polymer solution;
10) quenching the reaction;
11) forming molten polymer

    
    
        where the polymer comprises one or more C3 to C40 olefins, and less than 50 mole % of ethylene, and where the polymer has:
        
            a) a Dot T-Peel of 1 Newton or more; and
            b) a branching index (g′) of 0.95 or less measured at the Mz of the polymer; and
            c) an Mw of 100,000 or less; and
        
        
    
    


12) combining the molten polymer and one or more additives in a static mixer;
13) removing the polymer combination from the static mixer; and
14) pelletizing or drumming the polymer combination.
In a particularly preferred embodiment, this invention relates to a continuous process to make an adhesive comprising
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 20% or less under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 40% or more at the selected polymerization conditions;
3) contacting, in a solvent and in a reaction zone under the selected polymerization conditions, the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins, and, optionally one or more diolefins;
4) at a temperature of greater than 100° C.;
5) at a residence time of 30 minutes or less;
6) wherein the ratio of the first catalyst to the second catalyst is from 1:1 to 30:1;
7) wherein the activity of the catalyst components is at least 50 kilograms of polymer per gram of the catalyst components; and wherein at least 50% of the olefins are converted to polymer;
8) withdrawing polymer solution from the reaction zone;
9) removing at least 10% solvent from the polymer solution;
10) quenching the reaction;
11) forming molten polymer

    
    
        where the polymer comprises one or more C3 to C40 olefins (preferably propylene), and less than 50 mole % of ethylene, and where the polymer has:
        
            a) a Dot T-Peel of 3 Newton or more; and
            b) a branching index (g′) of 0.90 or less measured at the Mz of the polymer; and
            c) an Mw of 30,000 or less;
            d) a peak melting point between 60 and 190° C.,
            e) a Heat of fusion of 1 to 70 J/g,
            f) a melt viscosity of 8000 mPa.sec or less at 190° C.; and
        
        
    
    


12) combining the molten polymer and one or more additives in a static mixer;
13) removing the polymer combination from the static mixer; and
14) pelletizing or drumming the polymer combination.
In another embodiment this invention relates to a continuous process to prepare an adhesive comprising:
1) combining monomer, catalyst and activator in a reactor system,
2) withdrawing polymer from the reactor system,
3) quenching the reaction,
4) forming molten polymer,
5) combining the molten polymer and one or more additives, and
6) pelletizing or drumming the polymer combination.
Formulations of the Polymers
The polymers produced herein then can be used directly as an adhesive or blended with other components to form an adhesive.
Tackifiers are typically not needed with the polymers of this invention. However if tackifier is desired, the tackifiers that may be blended with the polymers described above are those typically used in the art. Examples include, but are not limited to, aliphatic hydrocarbon resins, aromatic modified aliphatic hydrocarbon resins, hydrogenated polycyclopentadiene resins, polycyclopentadiene resins, gum rosins, gum rosin esters, wood rosins, wood rosin esters, tall oil rosins, tall oil rosin esters, polyterpenes, aromatic modified polyterpenes, terpene phenolics, aromatic modified hydrogenated polycyclopentadiene resins, hydrogenated aliphatic resin, hydrogenated aliphatic aromatic resins, hydrogenated terpenes and modified terpenes, and hydrogenated rosin esters. In some embodiments the tackifier is hydrogenated. In other embodiments the tackifier is non-polar. (Non-polar meaning that the tackifier is substantially free of monomers having polar groups. Preferably the polar groups are not present, however if they are preferably they are not present at more that 5 weight %, preferably not more that 2 weight %, even more preferably no more than 0.5 weight %.) In some embodiments the tackifier has a softening point (Ring and Ball, as measured by ASTM E-28) of 80° C. to 150° C., preferably 100° C. to 130° C.
The tackifier, if present, is typically present at about 1 weight % to about 80 weight %, based upon the weight of the blend, more preferably 2 weight % to 40 weight %, even more preferably 3 weight % to 30 weight %.
Preferred hydrocarbon resins for use as tackifiers or modifiers include:
1. Resins such as C5/C6 terpene resins, styrene terpenes, alpha-methyl styrene terpene resins, C9 terpene resins, aromatic modified C5/C6, aromatic modified cyclic resins, aromatic modified dicyclopentadiene based resins or mixtures thereof Additional preferred resins include those described in WO 91/07472, U.S. Pat. No. 5,571,867, U.S. Pat. No. 5,171,793 and U.S. Pat. No. 4,078,132. Typically these resins are obtained from the cationic polymerization of compositions containing one or more of the following monomers: C5 diolefins (such as 1–3 pentadiene, isoprene, etc); C5 olefins (such as 2-methylbutenes, cyclopentene, etc.); C6 olefins (such as hexene), C9 vinylaromatics (such as styrene, alpha methyl styrene, vinyltoluene, indene, methyl indene, etc. ); cyclics (such as dicyclopentadiene, methyldicyclopentadiene, etc.); and or terpenes (such as limonene, carene, etc).
2. Resins obtained by the thermal polymerization of dicyclopentadiene, and/or the thermal polymerization of dimers or oligomers of cyclopentadiene and/or methylcyclopentadiene, optionally with vinylaromatics (such as styrene, alpha-methyl styrene, vinyl toluene, indene, methyl indene). The resins obtained after polymerization and separation of unreacted materials, can be hydrogenated if desired. Examples of preferred resins include those described in U.S. Pat. No. 4,078,132; WO 91/07472; U.S. Pat. No. 4,994,516; EP 0 046 344 A; EP 0 082 726 A; and U.S. Pat. No. 5,171,793.
In another embodiment an adhesive composition comprising polymer product of this invention further comprises a crosslinking agent. Preferred crosslinking agents include those having functional groups that can react with the acid or anhydride group. Preferred crosslinking agents include alcohols, multiols, amines, diamines and/or triamines. Examples of crosslinking agents useful in this invention include polyamines such as ethylenediamine, diethylenetriamine, hexamethylenediamine, diethylaminopropylamine, and/or menthanediamine.
In another embodiment an adhesive composition comprising the polymer product of this invention further comprises typical additives known in the art such as fillers, antioxidants, adjuvants, adhesion promoters, oils, and/or plasticizers. Preferred fillers include titanium dioxide, calcium carbonate, barium sulfate, silica, silicon dioxide, carbon black, sand, glass beads, mineral aggregates, talc, clay and the like. Preferred antioxidants include phenolic antioxidants, such as Irganox 1010, Irganox, 1076 both available from Ciba-Geigy. Preferred oils include paraffinic or napthenic oils such as Primol 3 52, or Primol 876 available from ExxonMobil Chemical France, S.A. in Paris, France. Preferred plasticizers include polybutenes, such as Parapol 950 and Parapol 1300 available from ExxonMobil Chemical Company in Houston Texas. Other preferred additives include block, antiblock, pigments, processing aids, UV stabilizers, neutralizers, lubricants, surfactants and/or nucleating agents may also be present in one or more than one layer in the films. Preferred additives include silicon dioxide, titanium dioxide, polydimethylsiloxane, talc, dyes, wax, calcium sterate, carbon black, low molecular weight resins and glass beads. Preferred adhesion promoters include polar acids, polyaminoamides (such as Versamid 115, 125, 140, available from Henkel), urethanes (such as isocyanate/hydroxy terminated polyester systems, e.g. bonding agent TN/Mondur Cb-75(Miles, Inc.), coupling agents, (such as silane esters (Z-6020 from Dow Coming)), titanate esters (such as Kr-44 available from Kenrich), reactive acrylate monomers (such as sarbox SB-600 from Sartomer), metal acid salts (such as Saret 633 from Sartomer), polyphenylene oxide, oxidized polyolefins, acid modified polyolefins, and anhydride modified polyolefins.
In another embodiment the polymers of this invention are combined with less than 3 wt % anti-oxidant, less than 3 wt % flow improver, less than 10 wt % wax, and or less than 3 wt % crystallization aid.
Other optional components that may be combined with the polymer product of this invention are plasticizers or other additives such as oils, surfactants, fillers, color masterbatches, and the like. Preferred plasticizers include mineral oils, polybutenes, phthalates and the like. Particularly preferred plasticizers include phthalates such as diisoundecyl phthalate (DIUP), diisononylphthalate (DMNP), dioctylphthalates (DOP) and the like. Particularly preferred oils include aliphatic naphthenic oils.
Other optional components that may be combined with the polymer product of this invention are low molecular weight products such as wax, oil or low Mn polymer, (low meaning below Mn of 5000, preferably below 4000, more preferably below 3000, even more preferably below 2500). Preferred waxes include polar or non-polar waxes, functionalized waxes, polypropylene waxes, polyethylene waxes, and wax modifiers. Preferred waxes include ESCOMERTM 101. Preferred functionalized waxes include those modified with an alcohol, an acid, a ketone, an anhydride and the like. Preferred examples include waxes modified by methyl ketone, maleic anhydride or maleic acid. Preferred oils include aliphatic napthenic oils, white oils or the like. Preferred low Mn polymers include polymers of lower alpha olefins such as propylene, butene, pentene, hexene and the like. A particularly preferred polymer includes polybutene having an Mn of less than 1000. An example of such a polymer is available under the trade name PARAPOLTM 950 from ExxonMobil Chemical Company. PARAPOLTM 950 is a liquid polybutene polymer having an Mn of 950 and a kinematic viscosity of 220 cSt at 100° C., as measured by ASTM D 445. In some embodiments the polar and non-polar waxes are used together in the same composition.
In some embodiments, however, wax may not be desired and is present at less than 5 weight % , preferably less than 3 weight %, more preferably less than 1 weight %, more preferably less than 0.5 weight %, based upon the weight of the composition.
In another embodiment the polymers of this invention have less than 30 weight % total of any combination of additives described above, preferably less than 25 weight %, preferably less than 20 weight %, preferably less than 15 weight %, preferably less than 10 weight %, preferably less than 5 weight %, based upon the weight of the polymer and the additives.
In another embodiment the polymer produced by this invention may be blended with elastomers (preferred elastomers include all natural and synthetic rubbers, including those defined in ASTM D1566). In a preferred embodiment elastomers are blended with the polymer produced by this invention to form rubber toughened compositions. In a particularly preferred embodiment the rubber toughened composition is a two (or more) phase system where the rubber is a discontinuous phase and the polymer is a continuous phase. Examples of preferred elastomers include one or more of the following: ethylene propylene rubber, ethylene propylene diene monomer rubber, neoprene rubber, styrenic block copolymer rubbers (including SI, SIS, SB, SBS, SIBS and the like), butyl rubber, halobutyl rubber, copolymers of isobutylene and para-alkylstyrene, halogenated copolymers of isobutylene and para-alkylstyrene. This blend may be combined with the tackifiers and/or other additives as described above.
In another embodiment the polymer produced by this invention may be blended with impact copolymers. Impact copolymers are defined to be a blend of isotactic PP and an elastomer such as an ethylene-propylene rubber. In a preferred embodiment the blend is a two (or more) phase system where the impact copolymer is a discontinuous phase and the polymer is a continuous phase.
In another embodiment the polymer produced by this invention may be blended with ester polymers. In a preferred embodiment the blend is a two (or more) phase system where the polyester is a discontinuous phase and the polymer is a continuous phase.
In a preferred embodiment the polymers of the invention described above are combined with metallocene polyethylenes (mPE's) or metallocene polypropylenes (mPP's). The mPE and mPP homopolymers or copolymers are typically produced using mono- or bis-cyclopentadienyl transition metal catalysts in combination with an activator of alumoxane and/or a non-coordinating anion in solution, slurry, high pressure or gas phase. The catalyst and activator may be supported or unsupported and the cyclopentadienyl rings by may substituted or unsubstituted. Several commercial products produced with such catalyst/activator combinations are commercially available from ExxonMobil Chemical Company in Baytown, Tex. under the tradenames EXCEEDTM, ACHIEVETM and EXACTTM. For more information on the methods and catalysts/activators to produce such mPE homopolymers and copolymers see WO 94/26816; WO 94/03506; EPA 277,003; EPA 277,004; U.S. Pat. No. 5,153,157; U.S. Pat. No. 5,198,401; U.S. Pat. No. 5,240,894; U.S. Pat. No. 5,017,714; CA 1,268,753; U.S. Pat. No. 5,324,800; EPA 129,368; U.S. Pat. No. 5,264,405; EPA 520,732; WO 92 00333; U.S. Pat. No. 5,096,867; U.S. Pat. No. 5,507,475; EPA 426 637; EPA 573 403; EPA 520 732; EPA 495 375; EPA 500 944; EPA 570 982; WO91/09882; WO94/03506 and U.S. Pat. No. 5,055,438.
In another embodiment the olefin polymer of this invention, preferably the polypropylene homopolymer or copolymer of this invention, can be blended with another homopolymer and/or copolymer, including but not limited to, homopolypropylene, propylene copolymerized with up to 50 weight % of ethylene or a C4 to C20 alpha.-olefin, isotactic polypropylene, highly isotactic polypropylene, syndiotactic polypropylene, random copolymer of propylene and ethylene and/or butene and/or hexene, polybutene, ethylene vinyl acetate, low density polyethylene (density 0.915 to less than 0.935 g/cm3) linear low density polyethylene, ultra low density polyethylene (density 0.86 to less than 0.90 g/cm3), very low density polyethylene (density 0.90 to less than 0.915 g/cm3), medium density polyethylene (density 0.935 to less than 0.945 g/cm3), high density polyethylene (density 0.945 to 0.98 g/cm3), ethylene vinyl acetate, ethylene methyl acrylate, copolymers of acrylic acid, polymethylmethacrylate or any other polymers polymerizable by a high-pressure free radical process, polyvinylchloride, polybutene-1, isotactic polybutene, ABS resins, elastomers such as ethylene-propylene rubber (EPR), vulcanized EPR, EPDM, block copolymer elastomers such as SBS, nylons (polyamides), polycarbonates, PET resins, crosslinked polyethylene, copolymers of ethylene and vinyl alcohol (EVOH), polymers of aromatic monomers such as polystyrene, poly-1 esters, high molecular weight polyethylene having a density of 0.94 to 0.98 g/cm3 low molecular weight polyethylene having a density of 0.94 to 0.98 g/cm3, graft copolymers generally, polyacrylonitrile homopolymer or copolymers, thermoplastic polyamides, polyacetal, polyvinylidine fluoride and other fluorinated elastomers, polyethylene glycols and polyisobutylene.
In a preferred embodiment the olefin polymer of this invention, preferably the polypropylene polymer of this invention, is present in the blend at from 10 to 99 weight %, based upon the weight of the polymers in the blend, preferably 20 to 95 weight %, even more preferably at least 30 to 90 weight %, even more preferably at least 40 to 90 weight %, even more preferably at least 50 to 90 weight %, even more preferably at least 60 to 90 weight %, even more preferably at least 70 to 90 weight %.
The blends described above may be produced by mixing the two or more polymers together, by connecting reactors together in series to make reactor blends or by using more than one catalyst in the same reactor to produce multiple species of polymer. The polymers can be mixed together prior to being put into the extruder or may be mixed in an extruder.
Any of the above polymers, including the polymers produced by this invention, may be functionalized. Preferred functional groups include maleic acid and maleic anhydride. By functionalized is meant that the polymer has been contacted with an unsaturated acid or anhydride. Preferred unsaturated acids or anhydrides include any unsaturated organic compound containing at least one double bond and at least one carbonyl group. Representative acids include carboxylic acids, anhydrides, esters and their salts, both metallic and non-metallic. Preferably the organic compound contains an ethylenic unsaturation conjugated with a carbonyl group (—C═O). Examples include maleic, fumaric, acrylic, methacrylic, itaconic, crotonic, alpha.methyl crotonic, and cinnamic acids as well as their anhydrides, esters and salt derivatives. Maleic anhydride is particularly preferred. The unsaturated acid or anhydride is preferably present at about 0.1 weight % to about 10 weight %, preferably at about 0.5 weight % to about 7 weight %, even more preferably at about 1 to about 4 weight %, based upon the weight of the hydrocarbon resin and the unsaturated acid or anhydride.
In a preferred embodiment the unsaturated acid or anhydried comprises a carboxylic acid or a derivative thereof selected from the group consisting of unsaturated carboxylic acids, unsaturated carboxylic acid derivatives selected from esters, imides, amides, anhydrides and cyclic acid anhydrides or mixtures thereof.
Applications
The polymer product of this invention or formulations thereof may then be applied directly to a substrate or may be sprayed thereon, typically the polymer is molten. Spraying is defined to include atomizing, such as producing an even dot pattern, spiral spraying such as Nordson Controlled Fiberization or oscillating a stretched filament like is done in the ITW Dynafiber/Omega heads or Summit technology from Nordson, as well as melt blown techniques. Melt blown techniques are defined to include the methods described in U.S. Pat. No. 5,145,689 or any process where air streams are used to break up filaments of the extrudate and then used to deposit the broken filaments on a substrate. In general, melt blown techniques are processes that use air to spin hot melt adhesive fibers and convey them onto a substrate for bonding. Fibers sizes can easily be controlled from 20–200 microns by changing the melt to air ratio. Few, preferably no, stray fibers are generated due to the inherent stability of adhesive melt blown applicators. Under UV light the bonding appears as a regular, smooth, stretched dot pattern. Atomization is a process that uses air to atomize hot melt adhesive into very small dots and convey them onto a substrate for bonding.
Lamination Melt Coating
The adhesives of this invention can be used in any adhesive application, including but not limited to, disposables, packaging, laminates, pressure sensitive adhesives, tapes labels, wood binding, paper binding, non-wovens, road marking, reflective coatings, and the like.
In a preferred embodiment the adhesives of this invention can be used for disposable diaper and napkin chassis construction, elastic attachment in disposable goods converting, packaging, labeling, bookbinding, woodworking, and other assembly applications. Particularly preferred applications include: baby diaper leg elastic, diaper frontal tape, diaper standing leg cuff, diaper chassis construction, diaper core stabilization, diaper liquid transfer layer, diaper outer cover lamination, diaper elastic cuff lamination, feminine napkin core stabilization, feminine napkin adhesive strip, industrial filtration bonding, industrial filter material lamination, filter mask lamination, surgical gown lamination, surgical drape lamination, and perishable products packaging.
The adhesives described above may be applied to any substrate. Preferred substrates include wood, paper, cardboard, plastic, thermoplastic, rubber, metal, metal foil (such as aluminum foil and tin foil), metallized surfaces, cloth, non-wovens (particularly polypropylene spun bonded fibers or non-wovens), spunbonded fibers, cardboard, stone, plaster, glass (including silicon oxide (SiOx)coatings applied by evaporating silicon oxide onto a film surface), foam, rock, ceramics, films, polymer foams (such as polyurethane foam), substrates coated with inks, dyes, pigments, PVDC and the like or combinations thereof.
Additional preferred substrates include polyethylene, polypropylene, polyacrylates, acrylics, polyethylene terephthalate, or any of the polymers listed above as suitable for blends.
Any of the above substrates, and/or the polymers of this invention, may be corona discharge treated, flame treated, electron beam irradiated, gamma irradiated, microwaved, or silanized.
The adhesives produced herein, when coated in some fashion between two adherends, preferably perform such that the materials are held together in a sufficient fashion compared to a standard specification or a standard adhesive similarly constructed.
The polymer product of this invention may be used in any adhesive application described in WO 97/33921 in combination with the polymers described therein or in place of the polymers described therein.
The polymer product of this invention, alone or in combination with other polymers and or additives, may also be used to form hook and loop fasteners as described in WO 02/35956.
In another embodiment this invention relates to:


    1. A continuous process to produce a branched olefin polymer comprising:


1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 20% or less under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more at the selected polymerization conditions;
3) contacting a catalyst component, one or more activators and one or more C2 to C40 olefins in a first reaction zone, at a temperature of greater than 70° C., and at a residence time of 120 minutes or less; and
4) transfering the contents of the first reaction zone to a second reaction zone and further contacting the contents with a catalyst component, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C., and at a residence time of 120 minutes or less; and
5) optionally, transferring the contents of the second reaction zone to a third reaction zone and further contacting the contents with a catalyst compound, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70° C., and at a residence time of 120 minutes or less; and
6) recovering a branched olefin polymer comprising at least 50 mole % of one or more C3 to C40 olefins,
where the first catalyst component is present in at least one reaction zone and the second catalyst component is present in a second reaction zone and where in at least one reaction zone the C2 to C40 olefin is a C3 to C40 alpha-olefin.


    2. The process of paragraph 1 wherein the olefin polymer comprises from 50 to 100 mole % of propylene.
    3. The process of paragraph 1 or 2 wherein the olefin polymer is homopolypropylene.
    4. The process of claim 1 wherein the first catalyst component comprises a non-sterospecific metallocene catalyst compound.
    5. The process of any of the above paragraphs wherein the second catalyst component comprises a sterospecific metallocene catalyst compound.
    6. The process of any of the above paragraphs where propylene is present in the first reaction zone.
    7. The process of any of the above paragraphs where propylene is present in the second reaction zone.
    8. The process of any of the above paragraphs where propylene is present in the third reaction zone.
    9. The process of any of the above paragraphs where ethylene is present in the first reaction zone.
    10. The process of any of the above paragraphs where ethylene is present in the second reaction zone.
    11. The process of any of claims 2 to 10 where ethylene is present in the third reaction zone.
    12. The process of any of the above paragraphs wherein propylene and ethylene are present in the first reaction zone.
    13. The process of any of claims 1 to 7 wherein propylene and ethylene are present in the second reaction zone.
    14. The process of any of the above paragraphs where propylene is present in the first reaction zone at 100 weight %, based upon the weight of the monomers present.
    15. The process of any of the above paragraphs where propylene is present in the second reaction zone at 100 weight %, based upon the weight of the monomers present.
    16. The process of an of claims 2 to 15 where propylene is present in the third reaction zone at 100 weight %, based upon the weight of the monomers present.
    17. The process of any of the above paragraphs where propylene is present in the first reaction zone at 100 weight %, (based upon the weight of the monomers present in the first reaction zone) and ethylene is present in the second reaction zone at up to 50 weight %, (based upon the weight of the monomers present in the second reaction zone).
    18. The process of any of the above paragraphs where propylene and ethylene are present in the the first reaction zone and no ethylene, other than residual ethylene monomer present in the contents of the first reaction zone, is introduced into the second reaction zone.
    19. The process of any of the above paragraphs where ethylene is intermittently introduced into one or more reaction zones.
    20. The process of any of the above paragraphs where ethylene is present in a reaction zone at less than 10 weight %, based upon the weight of the monomers in the reaction zone.
    21. The process of any of the above paragraphs wherein propylene is present in the first reaction zone, ethylene is present in the second reaction zone, the second catalyst component is present in the first reaction zone, and the first catalyst component is present in the second reaction zone.
    22. The process of any of claims 1 to 20 wherein propylene is present in the first reaction zone, propylene and ethylene are present in the second reaction zone, the second catalyst component is present in the first reaction zone, and the first catalyst component is present in the second reaction zone.
    23. The process of any of claims 1 to 20 wherein propylene and ethylene are present in the first reaction zone, propylene is present in the second reaction zone, the first catalyst component is present in the first reaction zone, and the second catalyst component is present in the second reaction zone.
    24. The process of any of claims 1 to 20 wherein propylene is present in the first reaction zone, propylene and ethylene are present in the second reaction zone, the second catalyst component is present in the first reaction zone, and the second catalyst component is present in the second reaction zone.
    25. The process of any of claims 1 to 20 wherein ethylene is present in the first reaction zone, propylene is present in the second reaction zone, propylene is present in the third reaction zone, the first catalyst component is present in the second reaction zone, and the second catalyst component is present in the third reaction zone, and the catalyst compound present in the first reaction zone is capable of producing polymer having an Mw of 20,000 or less and a crystallinity of 10% or less at the selected polymerization conditions.
    26. The process of claim 1 wherein


1) the first catalyst component comprises a non-sterospecific metallocene catalyst compound;
2) the second catalyst component comprises a sterospecific metallocene catalyst compound,
3) the first reaction zone is a reactor comprising solvent, monomer, catalyst compound and activator at a temperature of greater than 70° C.; and
4) The second reaction zone is a reactor comprising solvent, monomer, catalyst compound and activator at a temperature of greater than 70° C.;

    27. The process of any of the above paragraphs where the catalyst compound capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 10% or less is selected from the group consisting of: rac-dimethylsilylbis(4,7-dimethylindenyl)hafnium dichloride, rac-dimethylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, rac-dimethylsilylbis(4,7-dimethylindenyl)zirconium dichloride, rac-dimethylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, rac-dimethylsilylbis(indenyl)hafnium dichloride, rac-dimethylsilylbis(indenyl)hafnium dimethyl, rac-dimethylsilylbis(indenyl)zirconium dichloride, rac-dimethylsilylbis(indenyl)zirconium dimethyl, rac-dimethylsilylbis(tetrahydroindenyl)hafnium dichloride, rac-dimethylsilylbis(tetrahydroindenyl)hafnium dimethyl, rac-dimethylsilylbis(tetrahydroindenyl)zirconium dichloride, rac-dimethylsilylbis(tetrahydroindenyl)zirconium dimethyl, rac-diphenylsilylbis(4,7-dimethylindenyl)hafnium dichloride, rac-diphenylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, rac-diphenylsilylbis(4,7-dimethylindenyl)zirconium dichloride, rac-diphenylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, rac-diphenylsilylbis(indenyl)hafnium dichloride, rac-diphenylsilylbis(indenyl)hafnium dimethyl, rac-diphenylsilylbis(indenyl)zirconium dichloride, rac-diphenylsilylbis(indenyl)zirconium dimethyl, rac-diphenylsilylbis(tetrahydroindenyl)hafnium dichloride, rac-diphenylsilylbis(tetrahydroindenyl)hafnium dimethyl, rac-diphenylsilylbis(tetrahydroindenyl)zirconium dichloride, rac-diphenylsilylbis(tetrahydroindenyl)zirconium dimethyl, rac-methylphenylsilylbis(4,7-dimethylindenyl)hafnium dichloride, rac-methylphenylsilylbis(4,7-dimethyl, rac-methylphenylsilylbis(4,7-dimethylindenyl)zirconium dichloride, rac-methylphenylsilylbis(4,7-dimethylindenyl)zirconium dimethyl rac-methylphenylsilylbis(indenyl)hafnium dichloride, rac-methylphenylsilylbis(indenyl)hafnium dimethyl, rac-methylphenylsilylbis(indenyl)zirconium dichloride, rac-methylphenylsilylbis(indenyl)zirconium dimethyl, rac-methylphenylsilylbis(tetrahydroindenyl)hafnium dichloride, rac-methylphenylsilylbis(tetrahydroindenyl)hafnium dimethyl, rac-methylphenylsilylbis(tetrahydroindenyl)zirconium dichloride, rac-methylphenylsilylbis(tetrahydroindenyl)zirconium dimethyl, rac-ethylenebis(4,7-dimethylindenyl)hafnium dichloride, rac-ethylenebis(4,7-dimethylindenyl)hafnium dimethyl, rac-ethylenebis(4,7-dimethylindenyl)zirconium dichloride, rac-ethylenebis(4,7-dimethylindenyl)zirconium dimethyl, rac-ethylenebis(indenyl)hafnium dichloride, rac-ethylenebis(indenyl)hafnium dimethyl, rac-ethylenebis(indenyl)zirconium dichloride, rac-ethylenebis(indenyl)zirconium dimethyl, rac-ethylenebis(tetrahydroindenyl)hafnium dichloride, rac-ethylenebis(tetrahydroindenyl)hafnium dimethyl, rac-ethylenebis(tetrahydroindenyl)zirconium dichloride, and rac-ethylenebis(tetrahydroindenyl)zirconium dimethyl.
    28. The process of any of the above paragraphs wherein the first catalyst component comprises one or more of
    dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
    dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dichloride,
    dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
    dimethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)titanium dichloride,
    dimethylsilyl(tetramethylcyclopentadienyl)(s-butylamido)titanium dichloride,
    dimethylsilyl(tetramethylcyclopentadienyl)(n-butylamido)titanium dichloride,
    dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride,
    diethylsilyl(tetramethylcyclopentadienyl)(cyclododecyl-amido)titanium dichloride,
    diethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dichloride,
    diethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
    methylene(tetramethylcyclopentadienyl)(cyclododecyl-amido)titanium dichloride,
    methylene(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, methylene(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
    methylene(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride, dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
    dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
    dimethylsilyl(2,5-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride,
    dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
    dimethylsilyl(2,5-dimethylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
    dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
    dimethylsilyl(3,4-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride,
    dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
    dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
    dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
    dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
    dimethylsilyl(3-ethyl-4methylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
    dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride,
    dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
    dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(2-adamantylamido)titanium dichloride,
    dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
    dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride,
    dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
    dimethylsilyl(2-tetrahydroindenyl)(cyclododecylamido)titanium dichloride,
    dimethylsilyl(2-tetrahydroindenyl)(cyclohexylamido)titanium dichloride,
    dimethylsilyl(2-tetrahydroindenyl)(1-adamantylamido)titanium dichloride,
    dimethylsilyl(2-tetrahydroindenyl)(exo-2-norbornylamido)titanium dichloride,
    dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(s-butylamido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(n-butylamido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbomylamido)titanium dimethyl,
    diethylsilyl(tetramethylcyclopentadienyl)(cyclododecyl-amido)titanium dimethyl,
    diethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
    diethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dimethyl,
    diethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
    methylene(tetramethylcyclopentadienyl)(cyclododecyl-amido)titanium dimethyl,
    methylene(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, methylene(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
    methylene(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dimethyl,
    dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
    dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
    dimethylsilyl(2,5-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
    dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
    dimethylsilyl(2,5-dimethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
    dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
    dimethylsilyl(3,4-dimethylcyclopentadienyl)(exo-2norbornylamido)titanium dimethyl,
    dimethysilyl(3,4-dimethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
    dimethylsilyl(3,4-dimethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
    dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
    dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl, dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
    dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
    dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
    dimethysilyl(3-ethyl-4-methylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
    dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
    dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
    dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
    dimethysilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
    dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
    dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
    dimethylsilyl(2-tetrahydroindenyl)(cyclododecylamido)titanium dimethyl,
    dimethylsilyl(2-tetrahydroindenyl)(cyclohexylamido)titanium dimethyl,
    dimethylsilyl(2-tetrahydroindenyl)(1-adamantylamido)titanium dimethyl, and
    dimethylsilyl(2-tetrahydroindenyl)(exo-2-norbornylamido)titanium dimethyl.
    29. The process of any of the above paragraphs wherein the second catalyst component comprises one or more of the racemic versions of:
    dimethylsilyl(2-methyl-4-phenylindenyl)zirconium dichloride,
    dimethylsilyl(2-methyl-4-phenylindenyl)zirconium dimethyl,
    dimethylsilyl(2-methyl-4-phenylindenyl)hafnium dichloride,
    dimethylsilyl(2-methyl-4-phenylindenyl)hafnium dimethyl,
    dimethylsilyl bis(indenyl)hafnium dimethyl,
    dimethylsilyl bis(indenyl)hafnium dichloride,
    dimethylsilyl bis(indenyl)zirconium dimethyl,
    dimethylsilyl bis(indenyl)zirconium dichloride,

the racemic isomers of:

    dimethylsilanediylbis(2-methyl)metal dichloride;
    dimethylsilanediylbis(indenyl)metal dichloride;
    dimethylsilanediylbis(indenyl)metal dimethyl;
    dimethylsilanediylbis(tetrahydroindenyl)metal dichloride;
    dimethylsilanediylbis(tetrahydroindenyl)metal dimethyl;
    dimethylsilanediylbis(indenyl)metal diethyl; and
    dibenzylsilanediylbis(indenyl)metal dimethyl;

wherein the metal can be chosen from Zr, Hf, or Ti.

    30. The process of any of the above paragraphs wherein the first catalyst component comprises 1,1′-bis(4-triethylsilylphenyl)methylene-(cyclopentadienyl)(2,7-di-tertiary-butyl-9-fluorenyl)hafnium dimethyl and or 1,1′-bis(4-triethylsilylphenyl)methylene-(cyclopentadienyl)(3,8-di-tertiary-butyl-fluorenyl)hafnium dimethyl.
    31. The process of any of the above paragraphs wherein the second catalyst component comprises dimethylsilyl bis(2-methyl-5-phenylindenyl)zirconium dicmethyl and or dimethysilyl bis(2-methyl-4-phenylindenyl)zirconium dicmethyl.
    32. The process of any of the above paragraphs wherein the activator comprises dimethylaniliniumtetrakis(pentafluorophenyl)borate and or trityl tetrakis(pentafluorophenyl)borate.
    33. The process of any of the above paragraphs wherein the activator comprises an alumoxane.
    34. The process of any of the above paragraphs wherein the activator comprises an ionizing compound.
    35. The process of claim 35 wherein the activator comprises a non-coordinating anion.
    36. The process of any of the above paragraphs wherein the activator
    comprises one or more of methylalumoxane,
    trimethylammonium tetraphenylborate,
    triethylammonium tetraphenylborate,
    tripropylammonium tetraphenylborate,
    tri(n-butyl)ammonium tetraphenylborate,
    tri(t-butyl)ammonium tetraphenylborate,
    N,N-dimethylanilinium tetraphenylborate,
    N,N-diethylanilinium tetraphenylborate,
    N,N-dimethyl-(2,4,6-trimethylanilinium)tetraphenylborate,
    trimethylammonium tetrakis(pentafluorophenyl)borate,
    triethylammonium tetrakis(pentafluorophenyl)borate,
    tripropylammonium tetrakis(pentafluorophenyl)borate,
    tri(n-butyl)ammonium tetrakis(pentafluorophenyl)borate,
    tri(sec-butyl)ammonium tetrakis(pentafluorophenyl)borate
    N,N-dimethylanilinium tetrakis(pentafluorophenyl)borate,
    N,N-diethylanilinium tetrakis(pentafluorophenyl)borate,
    N,N-dimethyl-(2,4,6-trimethylanilinium)tetrakis(pentafluorophenyl)borate,
    trimethylammonium tetrakis-(2,3,4,6-tetrafluorophenylborate,
    triethylammonium tetrakis-(2 3,4,6-tetrafluorophenyl)borate,
    tripropylammonium tetrakis-(2,3,4,6-tetrafluorophenyl)borate,
    tri(n-butyl)ammonium tetrakis-(2,3,4,6-tetrafluoro-phenyl)borate,
    dimethyl(t-butyl)ammonium tetrakis-(2,3,4,6-tetrafluorophenyl)borate,
    N,N-dimethylanilinium tetrakis-(2,3,4,6-tetrafluorophenyl)borate,
    N,N-diethylanilinium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, and
    N,N-dimethyl-(2,4,6-trimethylanilinium)tetrakis-(2,3,4,6-tetrafluorophenyl)borate;
    di-(i-propyl)ammonium tetrakis(pentafluorophenyl)borate;
    dicyclohexylammonium tetrakis(pentafluorophenyl)borate;
    tiphenylphosphonium tetrakis(pentafluorophenyl)borate,
    tri(o-tolyl)phosphonium tetrakis(pentafluorophenyl)borate; and
    tri(2,6-dimethylphenyl)phosphonium tetrakis(pentafluorophenyl)borate.
    37. The process of any of the above paragraphs wherein the first catalyst component is capable of polymerizing macromonomers having reactive termini; and the second component is capable of producing macromonomers having reactive termini.
    38. The process of any of the above paragraphs wherein one or more reaction zones further comprise diolefin.
    39. The process of any of the above paragraph wherein one or more reaction zones further comprise one or more C4 to C40 dienes.
    40. The process of any of the above paragraphs wherein one or more reaction zones further comprise one or more dienes selected from the group consisting of 1,6-heptadiene, 1,7-octadiene, 1,8-nonadiene, 1,9-decadiene, 1,10-undecadiene, 1,11-dodecadiene, 1,12-tridecadiene, 1,13-tetradecadiene, cyclopentadiene, vinylnorbornene, norbornadiene, ethylidene norbornene, divinylbenzene, dicyclopentadiene, polybutadienes having an Mw less than 1000 g/mol, or combinations thereof.
    41. The process of any of the above paragraphs wherein at least one reaction zone is a gas phase reactor.
    42. The process of any of the above paragraphs wherein at least one reaction zone is a solution phase reactor.
    43. The process of any of the above paragraphs wherein at least one reaction zone is a slurry phase reactor.
    44. The process of any of the above paragraphs wherein all of the reaction zones are a solution phase reactor.
    45. The process of any of the above paragraphs wherein the first catalyst component, the second catalyst component and the activator comprise one or more of the following combinations (where Me equals methyl, Ph equals phenyl, Et equals ethyl, Cp equals cyclopentadienyl, 3,6-di-t-BuFlu equals 3,8-di-tert-butylfluorenyl, 2-Me-4-PhInd equals 2-methyl-4-phenylindenyl, 2-MeInd means 2-methylindenyl, c-C12H23 equals cyclododecyl, Me4C5-tetramethylcyclopentadienyl, H4Ind equals tetrahydroindenyl, and Ind equals indenyl):
    (1) Me2Si(Me4C5)(N-c-C12H23)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
    (2) Me2Si(Me4C5)(N-c-C12H23)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator,
    (2a) Me2Si(Me4C5)(N-c-C12H23)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (3) Me2Si(Me4C5)(N-c-C12H23)TiCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
    (4) Me2Si(Me4C5)(N-c-C12H23)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
    (4a) Me2Si(Me4C5(N-c-C12H23)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (5) Me2Si(Me4C5)(N-1-adamantyl)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane,
    (6) Me2Si(Me4C5)(N-1-adamantyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
    (6a) Me2Si(Me4C5)(N-1-adamantyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (7) Me2Si(Me4C5)(N-1-adamantyl)TiCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane,
    (8) Me2Si(Me4C5)(N-1-adamantyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
    (8a) Me2Si(Me4C5)(N-1-adamantyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (9) Me2Si(Me4C5)(N-t-butyl)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
    (10) Me2Si(Me4C5)(N-t-butyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
    (10a) Me2Si(Me4C5)(N-t-butyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (11) Me2Si(Me4C5)(N-t-butyl)TiCl2 and rac-Me2Si(2-MeInd) activated with an alumoxane;
    (12) Me2Si(Me4C5)(N-t-butyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
    (12a) Me2Si(Me4C5)(N-t-butyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (13) Me2Si(Me4C5)(N-exo-norbornyl)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
    (14) Me2Si(Me4C5)(N-exo-norbornyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
    (14a) Me2Si(Me4C5)(N-exo-norbornyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (15) Me2Si(Me4C5)(N-exo-norbornyl)TiCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
    (16) Me2Si(Me4C5)(N-exo-norbornyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
    (16a) Me2Si(Me4C5)(N-exo-norbornyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (17) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
    (18) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
    (18a) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (19) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
    (20) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
    (20a) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (21) meso-CH2CH2(Ind)2ZrCl2 and rac-Me2Si(H4Ind)2ZrCl2 activated with an alumoxane;
    (22) meso-CH2CH2(Ind)2ZrMe2 and rac-Me2Si(H4Ind)2ZrMe2 activated with a non-coordinating anion activator;
    (22a) meso-CH2CH2(Ind)2ZrMe2 and rac-Me2Si(H4Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (23) meso-CH2CH2(Ind)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
    (24) meso-CH2CH2(Ind)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
    (24a) meso-CH2CH2(Ind)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (25) meso-Me2Si(Ind)2ZrCl2 and rac-Me2Si(H4Ind)2ZrCl2 activated with an alumoxane;
    (26) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(H4Ind)2ZrMe2 activated with a non-coordinating anion activator;
    (26a) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(H4Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (27) meso-Me2Si(Ind)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
    (28) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
    (28a) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (29) meso-Me2Si(2-MeInd)2ZrCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane,
    (30) meso-Me2Si(2-MeInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator,
    (30a) meso-Me2Si(2-MeInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (31) meso-Me2Si(2-MeInd)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
    (32) meso-Me2Si(2-MeInd)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
    (32a) meso-Me2Si(2-MeInd)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (33) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
    (34) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
    (34a) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or phenylcarbonium tetrakis(pentaflourophenyl)boron;
    (35) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
    (36) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
    (36a) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (37) meso-Me2Si(2-Me-4-PhInd)2ZrCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
    (38) meso-Me2Si(2-Me-4-PhInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
    (38a) meso-Me2Si(2-Me-4-PhInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (39) meso-CH2CH2(2-Me-4-PhInd)2ZrCl2 and rac-CH2CH4(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
    (40) meso-CH2CH2(2-Me-4-PhInd)2ZrMe2 and rac-CH2CH2(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
    (40a) meso-CH2CH2(2-Me-4-PhInd)2ZrMe2 and rac-CH2CH2(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (41) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-CH2CH2(2-MePhInd)2ZrCl2 activated with an alumoxane;
    (42) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-CH2CH2(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
    (42a) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-CH2CH(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (43) meso-CH2CH2(Ind)2ZrCl2 and rac-CH2CH2(Ind)2ZrCl2 activated with an alumoxane;
    (44) meso-CH2CH2(Ind)2ZrMe2 and rac-CH2CH2(Ind)2ZrMe2 activated with a non-coordinating anion activator;
    (44a) meso-CH2CH2(Ind)2ZrMe2 and rac-CH2CH2(Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron,
    (45) meso-Me2Si(Ind)2ZrCl2 and rac-Me2Si(Ind)2ZrCl2 activated with an alumoxane;
    (46) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(Ind)2ZrMe2 activated with a non-coordinating anion activator;
    (46a) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (47) meso-CH2CH2(Ind)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 (4,7Me2Ind=4,7-dimethylindenyl) activated with an alumoxane;
    (48) meso-CH2CH2(Ind)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator;
    (48a) meso-CH2CH2(Ind)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (49) meso-Me2Si(Ind)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 activated with an alumoxane;
    (50) meso-Me2Si(Ind)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator;
    (50a) meso-Me2Si(Ind)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (51) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 (4,7-Me2Ind=4,7-dimethylindenyl) activated with an alumoxane;
    (52) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator;
    (52a) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
    (53) meso-Me2Si(2-MeInd)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 activated with an alumoxane;
    (54) meso-Me2Si(2-MeInd)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator; or
    (54a) meso-Me2Si(2-MeInd)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron.
    46. The process of any of the above paragraphs wherein:


1) the first catalyst component is capable of producing a polymer having an Mw of 80,000 or less and a crystallinity of 15% or less under selected polymerization conditions;
2) the a second catalyst component is capable of producing polymer having an Mw of 80,000 or less and a crystallinity of 50% or more at the selected polymerization conditions,
3) the temperature in the reaction zones is greater than 105° C.
4) the residence time in the reaction zones is 10 minutes or less;
5) the ratio of the first catalyst to the second catalyst is from 1:1 to 20:1;
6) wherein the activity of the catalyst components is at least 100 kilograms of polymer per gram of the catalyst compounds; and wherein at least 80% of the olefins are converted to polymer.

    47. The process of claim 46 wherein:


a) the olefins comprise propylene and one or more of butene, pentene, hexene,

    
    
        heptene, octene; nonene, decene, dodecene; and
    
    


b) the temperature is greater than 110° C.; and
c) the residence time is 5 minutes or less; and
d) the ratio of the first catalyst to the second catalyst is from 1:1 to 1:10.

    48. The process of any of the above paragraphs wherein the step of recovering a branched olefin polymer comprising at least 50 mole % of one or more C3 to C40 olefins comprises:


1) withdrawing polymer solution from the reaction zone;
2) removing at least 10% solvent from the polymer solution;
3) quenching the reaction;
4) devolatilizing the polymer solution to form molten polymer;
5) combining the molten polymer and one or more additives in a static mixer;
6) removing the polymer combination from the static mixer; and
7) pelletizing or drumming the polymer combination.

    49. The process of claim 48 wherein the additives in step 5) comprise nucleating agent.
    50. The process of any of the above paragraphs wherein the second catalyst component comprises one or more of:
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-methyl 4-[3′,5′di-tbutylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-sec-butyl 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluormethylphenyl]indenyl)2zirconium dichloride,;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluormethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-propyl, [3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride,
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-isobutyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl,
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-ethyl,4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene,
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3butadiene;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene,
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3butadiene;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-ethyl, 4-[3,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene,
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-isopropylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-isopropylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)zirconium dimethyl;
    dimethylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluormethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride,
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-(di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;,
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-sec-butyl,; 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis trimethylsilyl6)amidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-propylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-bis-difluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2 η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl) η4-1,4diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2 η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2 η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2 η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2 η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3butadiene;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4diphenyl-1,3butadiene;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(triethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-tert-butyl-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
    bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl.
    51. The process of claim 1 wherein the first catalyst component is also present in the second reaction zone.
    52. The process of claim 1 wherein one catalyst component is present in at least one reaction zone and the other catalyst component is present in the second reaction zone.
    53. The process of claim 1 wherein 3% or more of the combined catalyst components is not injected into the first reaction zone.
    54. The process of claim 1 wherein hydrogen is introduced into a reaction zone.
    55. The process of claim 1 wherein the temperature is different in the reaction zones.
    56. The process of claim 1 wherein the temperature in a reaction zone is varied.
    XXXXXXXXXXXXx

Characterization and Tests



Molecular weights (number average molecular weight (Mn), weight average molecular weight (Mw), and z-average molecular weight (Mz)) were determined using a Waters 150 Size Exclusion Chromatograph (SEC) equipped with a differential refractive index detector (DRI), an online low angle light scattering (LALLS) detector and a viscometer (VIS). The details of the detector calibrations have been described elsewhere [Reference: T. Sun, P. Brant, R. R. Chance, and W. W. Graessley, Macromolecules, Volume 34, Number 19, 6812–6820, (2001)]; attached below are brief descriptions of the components.
The SEC with three Polymer Laboratories PLgel 10 mm Mixed-B columns, a nominal flow rate 0.5 cm3/min, and a nominal injection volume 300 microliters was common to both detector configurations. The various transfer lines, columns and differential refractometer (the DRI detector, used mainly to determine eluting solution concentrations) were contained in an oven maintained at 135° C.
The LALLS detector was the model 2040 dual-angle light scattering photometer (Precision Detector Inc.). Its flow cell, located in the SEC oven, uses a 690 nm diode laser light source and collects scattered light at two angles, 15° and 90°. Only the 15° output was used in these experiments. Its signal was sent to a data acquisition board (National Instruments) that accumulates readings at a rate of 16 per second. The lowest four readings were averaged, and then a proportional signal was sent to the SEC-LALLS-VIS computer. The LALLS detector was placed after the SEC columns, but before the viscometer.
The viscometer was a high temperature Model 150R (Viscotek Corporation). It consisted of four capillaries arranged in a Wheatstone bridge configuration with two pressure transducers. One transducer measured the total pressure drop across the detector, and the other, positioned between the two sides of the bridge, measured a differential pressure. The specific viscosity for the solution flowing through the viscometer was calculated from their outputs. The viscometer was inside the SEC oven, positioned after the LALLS detector but before the DRI detector.
Solvent for the SEC experiment was prepared by adding 6 grams of butylated hydroxy toluene (BHT) as an antioxidant to a 4 liter bottle of 1,2,4 Trichlorobenzene (TCB) (Aldrich Reagent grade) and waiting for the BHT to solubilize. The TCB mixture was then filtered through a 0.7 micron glass pre-filter and subsequently through a 0.1 micron Teflon filter. There was an additional online 0.7 micron glass pre-filter/0.22 micron Teflon filter assembly between the high pressure pump and SEC columns. The TCB was then degassed with an online degasser (Phenomenex, Model DG-4000) before entering the SEC.
Polymer solutions were prepared by placing dry polymer in a glass container, adding the desired amount of TCB, then heating the mixture at 160 ° C. with continuous agitation for about 2 hours. All quantities were measured gravimetrically. The TCB densities used to express the polymer concentration in mass/volume units were 1.463 g/ml at room temperature and 1.324 g/ml at 135° C. The injection concentration ranged from 1.0 to 2.0 mg/ml, with lower concentrations being used for higher molecular weight samples.
Prior to running each sample the DRI detector and the injector were purged. Flow rate in the apparatus was then increased to 0.5 ml/minute, and the DRI was allowed to stabilize for 8–9 hours before injecting the first sample. The argon ion laser was turned on 1 to 1.5 hours before running samples by running the laser in idle mode for 20–30 minutes and then switching to full power in light regulation mode.
The branching index was measured using SEC with an on-line viscometer (SEC-VIS) and are reported as g′ at each molecular weight in the SEC trace. The branching index g′ is defined as:

g′=ηb/ηl

where ηb is the intrinsic viscosity of the branched polymer and ηl is the intrinsic viscosity of a linear polymer of the same viscosity-averaged molecular weight (Mv) as the branched polymer. ηl=KMvα, K and α were measured values for linear polymers and should be obtained on the same SEC-DRI-LS-VIS instrument as the one used for branching index measurement. For polypropylene samples presented in this invention, K=0.0002288 and α=0.705 were used. The SEC-DRI-LS-VIS method obviates the need to correct for polydispersities, since the intrinsic viscosity and the molecular weight were measured at individual elution volumes, which arguably contain narrowly dispersed polymer. Linear polymers selected as standards for comparison should be of the same viscosity average molecular weight, monomer content and composition distribution. Linear character for polymer containing C2 to C10 monomers is confirmed by Carbon-13 NMR the method of Randall (Rev. Macromol. Chem. Phys., C29 (2&3), p. 285–297). Linear character for C11 and above monomers is confirmed by GPC analysis using a MALLS detector. For example, for a copolymer of propylene, the NMR should not indicate branching greater than that of the co-monomer (i.e. if the comonmer is butene, branches of greater than two carbons should not be present). For a homopolymer of propylene, the GPC should not show branches of more than one carbon atom. When a linear standard is desired for a polymer where the comomoner is C9 or more, one can refer to T. Sun, P. Brant, R. R. Chance, and W. W. Graessley, Macromolecules, Volume 34, Number 19, 6812–6820, (2001) for protocols on determining standards for those polymers. In the case of syndiotactic polymers, the standard should have a comparable amount of syndiotacticty as measured by Carbon 13 NMR.

Peak melting point (Tm), peak crystallization temperature (Tc), heat of fusion and crystallinity were determined using the following procedure according to ASTM E 794-85. Differential scanning calorimetric (DSC) data was obtained using a TA Instruments model 2920 machine. Samples weighing approximately 7–10 mg were sealed in aluminum sample pans. The DSC data was recorded by first cooling the sample to −50° C. and then gradually heating it to 200° C. at a rate of 10° C./minute. The sample was kept at 200° C. for 5 minutes before a second cooling-heating cycle was applied. Both the first and second cycle thermal events were recorded. Areas under the melting curves were measured and used to determine the heat of fusion (delta H) and the degree of crystallinity. The percent crystallinity was calculated using the formula, [area under the curve (Joules/gram)/B (Joules/gram)]*100, where B is the heat of fusion for the homopolymer of the major monomer component. These values for B are to be obtained from the Polymer Handbook, Fourth Edition, published by John Wiley and Sons, New York 1999. A value of 189 J/g (B) was used as the heat of fusion for 100% crystalline polypropylene. For polymers displaying multiple melting or crystallization peaks, the highest melting peak was taken as peak melting point, and the highest crystallization peak was taken as peak crystallization temperature.
The glass transition temperature (Tg) was measured by ASTM E 1356 using a TA Instruments model 2920 machine.
Melt Viscosity (ASTM D-3236) (also called “viscosity”, “Brookfield viscosity”) Melt viscosity profiles were typically measured at temperatures from 120° C. to 190° C. using a Brookfield Thermosel viscometer and a number 27 spindle.
General Procedure of Polymerization
Polymerization was performed in a series dual-reactor continuous solution process. Both of the reactors were a 0.5-liter stainless steel autoclave reactor and were equipped with a stirrer, a water-cooling/steam-heating element with a temperature controller, and a pressure controller. Solvents, monomers such as ethylene and propylene, and comonomers (such as butene and hexene), if present, were first purified by passing through a three-column purification system. The purification system consisted of an Oxiclear column (Model # RGP-R1-500 from Labclear) followed by a 5A and a 3A molecular sieve columns. Purification columns were regenerated periodically whenever there was evidence of lower activity of polymerization. Both the 3A and 5A molecular sieve columns were regenerated in-house under nitrogen at a set temperature of 260° C. and 315° C., respectively. The molecular sieve material was purchased from Aldrich. Oxiclear column was regenerated in the original manufacture.
The solvent feed to the reactors was measured by a mass-flow meter. A Pulsafeed pump controlled the solvent flow rate and increased the solvent pressure to the reactors. The compressed, liquified propylene feed was measured by a mass flow meter and the flow was controlled by a variable speed pump. The monomers were fed into the reactor through pulse pump (>5 ml/minute) or Eldex pump (<5 ml/minute) and the flow rates were measured using Brooksfield mass flow meters or Micro-Motion Coriolis-type flow meters. The solvent, monomers and comonomers were fed into a manifold first. Ethylene from in-house supply was delivered as a gas solubilized in the chilled solvent/monomer mixture in the manifold. The mixture of solvent and monomers were then chilled to about −15° C. by passing through a chiller prior to feeding into the reactor through a single tube. Ethylene flow rate was metered through a Brookfield mass flow controller. A mass flow controller was used to deliver hydrogen into the reactor.
The content of the first reactor flowed into the second reactor. The exit of the first reactor was connected by an insulated tubing to a second reactor similarly equipped to the first, with a provision for independent catalyst and cocatalyst addition, and additional monomer, hydrogen, solvent addition and reaction temperature control. After the polymer solution stream exited the second reactor, polymerization was stopped with the addition of a small amount of water.
The catalyst compounds used to produce semi-crystalline polypropylene were rac-dimethylsilylbis(2-methyl-4-phenylindenyl)zirconium dimethyl (obtained from Albemarle) and rac-1,2-ethylene-bis(4,7-dimethylindenyl)hafnium dimethyl (obtained from Boulder Scientific Company).
The catalyst compounds used to produce amorphous polypropylene were, dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl (obtained from Albemarle) and [di(p-triethylsilylphenyl)methylene](cyclopentadienyl) (3,8-di-t-butylfluorenyl)hafnium dimethyl (obtained from Albemarle).
The catalysts were preactivated with N,N-dimethylanilinium tetrakis(pentafluorophenyl)borate (obtained from Albemarle) at a molar ratio of 1:1 to 1:1.1 in 700 ml of toluene at least 10 minutes prior to the polymerization reaction. The catalyst systems were diluted to a concentration of catalyst ranging from 0.2 to 1.4 mg/ml in toluene. All catalyst solutions were kept in an inert atmosphere with <1.5 ppm water content and fed into reactors by metering pumps. The catalyst solution was used for all polymerization runs carried out in the same day. New batch of catalyst solution was prepared when more than 700 ml of catalyst solution was consumed in one day.
When multiple catalysts were utilized in one reactor, each catalyst solution was pumped through separate lines, and then mixed in a manifold, and fed into the reactor through a single line. The connecting tube between the catalyst manifold and reactor inlet was about one meter long. The contact of catalyst, solvent and monomers took place in the reactor. Catalyst pumps were calibrated periodically using toluene as the calibrating medium. Catalyst concentration in the feed was controlled through changing the catalyst concentration in catalyst solution and/or changing in the feed rate of catalyst solution. The feed rate of catalyst solution varied in a range of 0.2 to 5 ml/minute.
As an impurity scavenger, 250 ml of tri-n-octylaluminum (TNOA) (25 wt. % in toluene, Akzo Noble) was diluted in 22.83 kilogram of hexane. The diluted TNOA solution was stored in a 37.9-liter cylinder under nitrogen blanket. The solution was used for all polymerization runs until about 90% of consumption, and then a new batch was prepared. Feed rates of the tri-n-octylaluminum (TNOA) solution varied from polymerization reaction to reaction, ranging from 0 (no scavenger) to 4 ml per minutes in order to optimize the overall catalyst efficiency.
For polymerization reactions involving alpha, omega-dienes, 1,9-decadiene was diluted to a concentration ranging from 4.8 to 9.5 vol. % in toluene. The diluted solution was then fed into the reactor by a metering pump through a comonomer line. The 1,9-decadiene was obtained from Aldrich and was purified by first passing through alumina activated at high temperature under nitrogen, followed by molecular sieve activated at high temperature under nitrogen.
The reactors were first cleaned by continuously pumping solvent (e.g., hexane) and scavenger through the reactor system for at least one hour at a maximum allowed temperature (about 150° C.). After cleaning, the reactors were heated/cooled to the desired temperature using water/steam mixture flowing through the reactor jacket and controlled at a set pressure with controlled solvent flow. Monomers and catalyst solutions were then fed into the reactor. An automatic temperature control system was used to control and to maintain the reactors at set temperatures. Onset of polymerization activity was determined by observations of a viscous product and lower temperature of water-steam mixture. Once the activity was established and system reached steady state, the reactors were lined out by continuing operating the system under the established condition for a time period of at least five times of mean residence time prior to sample collection. The resulting mixture from the second reactor, containing mostly solvent, polymer and unreacted monomers, was collected in a collection box. The collected samples were first air-dried in a hood to evaporate most of the solvent, and then dried in a vacuum oven at a temperature of about 90° C. for about 12 hours. The vacuum oven dried samples were weighed to obtain yields. All the reactions were carried out at a pressure of about 2.41 MPa-g and in the temperature range of 70 to 130° C.
EXAMPLE 1a–1f
These examples demonstrate a series dual-reactor continuous solution process with the use of rac-dimethylsilyl bis(2-methyl-4-phenylindenyl)zirconium dimethyl catalyst (Catalyst A) (obtained from Albemarle) in the first reactor to produce isotactic polypropylene and [di(p-triethylsilylphenyl)methylene](cyclopentadienyl) (3,8-di-t-butylfluorenyl)hafnium dimethyl catalyst (Catalyst B) (obtained from Albemarle) in the second reactor to produce amorphous polypropylene. Molecular weight of the isotactic polypropylene was controlled using reaction temperature and molecular weight of the amorphous polypropylene was adjusted through the addition of hydrogen as a molecular weight control agent. Propylene, solvent, catalyst A solution and scavenger were fed into the first reactor. The content of the first reactor flows into the second reactor. Catalyst B solution and hydrogen were fed into the second reactor. The general procedure described above was followed, and the detailed reaction condition and polymer properties are listed in Table 1.









TABLE 1









Example














1a
1b
1c
1d
1e
1f
















Reactor 1
125
120
115
125
120
115


Temperature (° C.)


Reactor 2
125
125
125
125
125
125


Temperature (° C.)


Hexane feed rate to
90
90
90
90
90
90


reactor 1 (ml/min)


Propylene feed rate
28.3
28.3
28.3
28.3
28.3
28.3


to reactor 1 (g/min)


Catalyst B feed
9.42E−07
9.42E−07
9.42E−07
9.42E−07
9.42E−07
9.42E−07


rate to reactor 2


(mole/min)


Catalyst A feed
4.89E−08
4.89E−08
4.89E−08
5.59E−08
5.59E−08
5.59E−08


rate to reactor 1


(mole/min)


H2 feed rate to
20
20
20
20
20
20


reactor 2 (cc/min)


Tc (° C.)
90.4
99.7
99.7
98.1
101.1
101.1


Tm (° C.)
131.6
150.0
152.4
145.3
149.9
151.6


Tg (° C.)
−10.9
−7.1
−7.0
−2.4
−8.3
−8.1


delta H (J/g)
21.8
44.4
52.9
42.5
52.9
53.8


Mn (kg/mol)
15.7
12.8
12.3
16.9
12.0
13.3


Mw (kg/mol)
37.0
34.4
37.9
49.3
32.9
37.4


Mz (kg/mol)
79.8
66.1
72.7
186.0
63.5
73.8


g′ @ Mz
0.9
0.88
0.88
0.81
0.86
0.88


Viscosity @ 190° C.
2690
2000
2560
5980
1470
2350


(cp)









EXAMPLE 2a–2f
These examples demonstrate a series dual-reactor continuous solution process with the use of rac-dimethylsilyl bis(2-methyl-4-phenylindenyl)zirconium dimethyl catalyst (Catalyst A) in the first reactor to produce isotactic polypropylene and [di(p-triethylsilylphenyl)methylene](cyclopentadienyl) (3,8-di-t-butylfluorenyl)hafnium dimethyl catalyst (Catalyst B) in the second reactor to produce propylene/ethylene copolymer. Propylene, solvent, catalyst A solution and scavenger were fed into the first reactor. The content of the first reactor flows into the second reactor. Ethylene and catalyst B solution were fed into the second reactor. The crystallinity of ethylene/propylene copolymers was adjusted through propylene conversion in the first reactor and amount of ethylene fed into the second reactor. Sufficient ethylene fed rate is required in order to produce amorphous ethylene/propylene copolymer. The general procedure described above was followed, and the detailed reaction condition and polymer properties are listed in Table 2.









TABLE 2









Example














2a
2b
2c
2d
2e
2f
















Reactor 1
118
125
125
125
125
125


Temperature (° C.)


Reactor 2
120
125
125
125
125
125


Temperature (° C.)


Propylene feed rate
14
28.3
28.3
28.3
28.3
28.3


to reactor 1 (g/min)


Ethylene feed rate
0.6
0.6
0.6
0.6
0.6
0.6


to reactor 2


(SLPM)


Hexane feed rate to
90
90
90
90
90
90


reactor 1 (ml/min)


Catalyst B feed
8.83E−07
5.89E−07
5.89E−07
5.89E−07
5.89E−07
5.89E−07


rate to reactor 2


(mole/min)


Catalyst A feed
1.40E−07
1.40E−07
6.99E−08
6.99E−08
6.99E−08
4.89E−08


rate to reactor 1


(mole/min)


H2 feed rate to
0
20
30
10
20
30


reactor 2 (cc/min)


Tc (° C.)
98.9
97.3
82.2
92.5
61.1
60.6


Tm (° C.)
150.5
138.0
144.3
147.9
110.3
108.1


Tg (° C.)
−15.8
−16.5
−16.1
−16.5
−13.5
−13.7


delta H (J/g)
47.9
68.5
21.6
37.1
19.3
15.1


Mn
17.8


Mw
42.1


Mz
76.8


g′ @ Mz
0.79


Viscosity @ 190° C.
2620
518
1290
1390
3040
1800


(cp)


Ethylene content
5.4


(wt %)









EXAMPLE 3a–3e
These examples demonstrate a series dual-reactor continuous solution process with the use of rac-dimethylsilyl bis(2-methyl-4-phenylindenyl)zirconium dimethyl catalyst (Catalyst A) in the first reactor to produce isotactic polypropylene and [di(p-triethylsilylphenyl)methylene](cyclopentadienyl) (3,8-di-t-butylfluorenyl)hafnium dimethyl catalyst (Catalyst B) in the second reactor to produce propylene/hexene copolymer. Propylene, solvent, catalyst A solution and scavenger were fed into the first reactor. The content of the first reactor flows into the second reactor. Hexene and catalyst B solution were fed into the second reactor. The crystallinity of propylene/hexene copolymers was adjusted through lo propylene conversion in the first reactor and amount of hexene fed into the second reactor. For most samples, the propylene/hexene copolymers were amorphous. The general procedure described above was followed, and the detailed reaction condition and polymer properties are listed in Table 3.









TABLE 3









Example













3a
3b
3c
3d
3e















Reactor 1 Temperature (° C.)
125
120
115
125
120


Reactor 2 Temperature (° C.)
125
125
125
125
125


Propylene feed rate to reactor 1
28.3
28.3
28.3
28.3
28.3


(g/min)


Hexene feed rate to reactor 2
1
1
1
1
1


(ml/min)


Hexane feed rate to reactor 1
90
90
90
90
90


(ml/min)


Catalyst B feed rate to reactor 2
9.42E−07
9.42E−07
9.42E−07
9.42E−07
9.42E−07


(mole/min)


Catalyst A feed rate to reactor 1
3.64E−08
3.64E−08
3.64E−08
4.20E−08
4.20E−08


(mole/min)


H2 feed rate to reactor 2 (cc/min)
10.0
20.0
30.0
10.0
20.0


Tc (° C.)



70.0
62.5


Tm (° C.)



132.9
129.2


Tg (° C.)



−6.8
−10.6


delta H (J/g)



27.0
17.3


Mn (kg/mol)


Mw (kg/mol)


Mz (kg/mol)


g′ @ Mz


Viscosity @ 190° C. (cp)
7950
2970
1420
3940
2140









EXAMPLE 4a–4e
These examples demonstrated a series dual-reactor continuous solution process with the use of [di(p-triethylsilylphenyl)methylene](cyclopentadienyl) (3,8-di-t-butylfluorenyl)hafnium dimethyl catalyst (Catalyst B) in the first reactor to produce ethylene/propylene copolymers and rac-dimethylsilyl bis(2-methyl-4-phenylindenyl)zirconium dimethyl catalyst (Catalyst A) in the second reactor to produce isotactic polypropylene. Catalyst fed rate to the first reactor was adjusted to ensure over 50% propylene conversion in the first reactor. At this propylene conversion, the ethylene conversion was about over 90%. High conversion of ethylene in the first reactor allowed for a more crystalline product to be made in the second reactor. Propylene, ethylene, solvent, catalyst A solution and scavenger were fed into the first reactor. The content of the first reactor flows into the second reactor. Catalyst B solution was fed into the second reactor. The general procedure described above was followed, and the detailed reaction condition and polymer properties are listed in Table 4.









TABLE 4









Example













4a
4b
4c
4d
4e















Reactor 1 Temperature (° C.)
125
125
125
125
125


Reactor 2 Temperature (° C.)
110
100
90
110
100


Propylene feed rate to reactor 1
14
14
14
28.3
28.3


(g/min)


Ethyelene feed rate to reactor 1
0.6
0.6
0.6
0.6
0.6


(SLPM)


Hexane feed rate to reactor 1
90
90
90
90
90


(ml/min)


Catalyst B feed rate to reactor 1
1.47E−07
1.47E−07
1.47E−07
5.89E−07
5.89E−07


(mole/min)


Catalyst A feed rate to reactor 2
2.83E−07
2.83E−07
2.83E−07
1.89E−07
1.89E−07


(mole/min)


Tc (° C.)
39.3
49.8
57.3
62.6
75.8


Tm (° C.)
81.8
91.3
99.7
111.7
122.8


Tg (° C.)
−23.7
−26.5
−22.7
−12.9
−11.6


delta H (J/g)
17.9
24.7
30.1
17.9
25.1


Mn (kg/mol)


Mw (kg/mol)


Mz (kg/mol)


g′ @ Mz


Viscosity @ 190° C. (cp)
2790
3360
2890
25600
28200









EXAMPLE 5a–5c
These examples demonstrate a series dual-reactor continuous solution process with the use of rac-dimethylsilyl bis(2-methyl-4-phenylindenyl)zirconium dimethyl catalyst (Catalyst A) to produce isotactic polypropylene in the first reactor and propylene/ethylene copolymer in the second reactor. Propylene, solvent, catalyst A solution and scavenger were fed into the first reactor. The content of the first reactor flows into the second reactor. Ethylene was fed into the second reactor. The crystallinity of ethylene/propylene copolymers was adjusted through propylene conversion in the first reactor and amount of ethylene fed into the second reactor. Sufficient ethylene fed rate is required in order to produce amorphous ethylene/propylene copolymer in the second reactor. The general procedure described above was followed, and the detailed reaction condition and polymer properties are listed in Table 5.









TABLE 5









Example











5a
5b
5c














Reactor 1 Temperature (° C.)
118
90
90


Reactor 2 Temperature (° C.)
100
90
100


Propylene feed rate to
14
14
14


reactor 1 (g/min)


Ethylene feed rate
0.6
0.6
0.6


to reactor 2 (SLPM)


Hexane feed rate to
90
90
90


reactor 1 (ml/min)


Catalyst A feed rate to
6.99E−08
6.99E−08
6.99E−08


reactor 1 (mole/min)


Catalyst A feed rate to
2.10E−07
2.10E−07
2.10E−07


reactor 2 (mole/min)


Tc (° C.)
74.6
52.5
87.4


Tm (° C.)
145.4
99.1
151.6


Tg (° C.)
−19.1
−11.9
−21.4


delta H (J/g)
45.1
42.9
29.0


Mn (kg/mol)


Mw (kg/mol)


Mz (kg/mol)


g′ @ Mz


Viscosity @ 190° C. (cp)
455
1240
320









EXAMPLE 6a–6c
These examples demonstrate a series dual-reactor continuous process with the use of rac-dimethylsilyl bis(2-methyl-4-phenylindenyl)zirconium dimethyl catalyst (Catalyst A) in the first reactor to produce low molecular weight polyethylene and a mixture of rac-dimethylsilyl bis(2-methyl-4-phenylindenyl)zirconium dimethyl catalyst (Catalyst A) and [di(p-triethylsilylphenyl)methylene](cyclopentadienyl) (3,8-di-t-butylfluorenyl)hafnium dimethyl catalyst (Catalyst B) in the second reactor to produce atactic (aPP) and isotactic polypropylene (iPP) as well as aPP/iPP branch-blocks. Ethylene, solvent, catalyst A solution and scavenger were fed into the first reactor. The content of the first reactor flows into the second reactor. Propylene and catalyst B solution were fed into the second reactor. The catalyst A fed rate was high enough that over 90% of ethylene were converted in the first reactor. The ratio of catalyst A and catalyst B was adjusted to control and aPP/iPP ratio in the second reactor. The general procedure described above was followed, and the detailed reaction condition and polymer properties are listed in Table 6.









TABLE 6









Example











6a
6b
6c














Reactor 1 Temperature (° C.)
125
120
120


Reactor 2 Temperature (° C.)
125
110
100


Ethylene feed rate reactor 1 (SLPM)
0.2
0.2
0.2


Propylene feed rate to
14
14
14


reactor 2 (g/min)


Hexane fed rate to reactor 1 (ml/min)
90
90
90


Catalyst B feed rate to
8.83E−07
8.83E−07
8.83E−07


reactor 2 (mole/min)


Catalyst A feed rate to
2.10E−07
2.10E−07
2.10E−07


reactor 1 (mole/min)


Tc (° C.)
91.2
103.6
101.6


Tm (° C.)
128.0
138.1
139.9


Tg (° C.)
−13.3
−8.8
−6.1


delta H (J/g)
26.7
59.3
42.6


Mn (kg/mol)


Mw (kg/mol)


Mz (kg/mol)


g′ @ Mz


Viscosity @ 190° C. (cp)
2435
28400
89800









Adhesive Testing

A number of hot melt adhesives were prepared by using the neat polymers or blending the neat polymer, functionalized additives, tackifier, wax, antioxidant, and other ingredients under low shear mixing at elevated temperatures to form fluid melt. The mixing temperature varied from about 130 to about 190° C. Adhesive test specimens were created by bonding the substrates together with a dot of molten adhesive and compressing the bond with a 500-gram weight until cooled to room temperature. The dot size was controlled by the adhesive volume such that in most cases the compressed disk which formed gave a uniform circle just inside the dimensions of the substrate.
Once a construct has been produced it can be subjected to various insults in order to assess the effectiveness of the bond. Once a bond fails to a paper substrate a simple way to quantify the effectiveness is to estimate the area of the adhesive dot that retained paper fibers as the construct failed along the bond line. This estimate was called percent substrate fiber tear. An example of good fiber, after conditioning a sample for 15 hours at −12° C. and attempting to destroy the bond, would be an estimate of 80–100% substrate fiber tear. It is likely that 0% substrate fiber tear under those conditions would signal a loss of adhesion.
Substrate fiber tear: The specimens were prepared using the same procedure as that described above. For low temperature fiber tear test, the bond specimens were placed in a freezer or refrigerator to obtain the desired test temperature. For substrate fiber tear at room temperature, the specimens were aged at ambient conditions. The bonds were separated by hand and a determination made as to the type of failure observed. The amount of substrate fiber tear was expressed in percentage.
Dot T-Peel was determined according to ASTM D 1876, except that the specimen was produced by combining two 1 inch by 3 inch (2.54 cm×7.62 cm) substrate cut outs with a dot of adhesive with a volume that, when compressed under a 500-gram weight occupied about 1 square inch of area (1 inch=2.54 cm). Once made all the specimens were pulled apart in side by side testing at a rate of 2 inches per minute by a machine that records the destructive force of the insult being applied. The maximum force achieved for each sample tested was recorded and averaged, thus producing the average maximum force which is reported as the Dot T-Peel.
Peel Strength (modified ASTM D1876): Substrates (1×3 inches (25×76 mm)) were heat sealed with adhesive film (5 mils (130 μm) thickness) at 135° C. for 1 to 2 seconds and 40 psi (0.28 MPa) pressure. Bond specimens were peeled back in a tensile tester at a constant crosshead speed of 2 in/min (51 mm/min). The average force required to peel the bond (5 specimens) apart is recorded.
Set time is defined as the time it takes for a compressed adhesive substrate construct to fasten together enough to give substrate fiber tear when pulled apart, and thus the bond is sufficiently strong to remove the compression. The bond will likely still strengthen upon further cooling, however, it no longer requires compression. These set times were measured by placing a molten dot of adhesive on to a file folder substrate taped to a flat table. A file folder tab (1 inch by 3 inch (2.5 cm×7.6 cm)) was placed upon the dot 3 seconds later and compressed with a 500 gram weight. The weight was allowed to sit for about 0.5 to about 10 seconds. The construct thus formed was pulled apart to check for a bonding level good enough to produce substrate fiber tear. The set time was recorded as the minimum time required for this good bonding to occur. Standards were used to calibrate the process.
SAFT (modified D4498) measures the ability of a bond to withstand an elevated temperature rising at 10° F. (5.5° C.)/15 min., under a constant force that pulls the bond in the shear mode. Bonds were formed in the manner described above on Kraft paper (1 inch by 3 inch (2.5 cm×7.6 cm)). The test specimens were suspended vertically in an oven at room temperature with a 500-gram load attached to the bottom. The temperatures at which the weight fell was recorded (when the occasional sample reached temperatures above the oven capacity >265° F. (129° C.) it was terminated and averaged in with the other samples at termination temperature).
Shore A hardness was measured according to ASTM D 2240. An air-cooled dot of adhesive was subjected to the needle and the deflection was recorded from the scale.
EXAMPLES 
The following materials were used in examples of adhesive performance testing.












Trade name
Description
Source















Tackifiers









Escorez ® 5637
Hydrogenated aromatic modified resin
ExxonMobil Chemical



produced from dicyclopentadiene
Company



feedstock, exhibiting a ring and ball



softening point of 130° C.


Escorez ® 5690
Hydrogenated aromatic modified resin
ExxonMobil Chemical



produced from dicyclopentadiene
Company



feedstock, exhibiting a ring and ball



softening point of 90° C.


Escorez ® 2203
A low aromatic modified hydrocarbon
ExxonMobil Chemical



resin having a narrow molecular weight
Company



distribution produced from a feed of C5,



C6 and C9 olefins and di-olefins, having



a ring and ball softening point of about



95° C.







Oils









Kadol oil
Refined white mineral oil
Witco







Polymers/Adhesives









Rextac RT 2715
Propylene/butene copolymer, Ziegler
Huntsman, Odessa Texas



Natta APAO


Henkel hot melt
Commercial bend of EVA, tackifier, and
Henkel Corporation


80–8368
wax


Advantra 9250
Commercial blend of ethylene/octene
Fuller



metallocene polymers, tackifiers, and



wax


Tite bond wood
Water based adhesive
Home Depot, Houston,


glue

Texas







Waxes/Funtionalized additives









AC395A
Oxidized polyethylene with density of
Honeywell, Morristown,



1.0 g/cc, viscosity of 2500 cP at 150° C.
New Jersey



and acid number of 45~50 mg/KOH/g.


AC 596P
Polypropylene-maleic anhydride
Honeywell, Morristown,



copolymer with viscosity 189 cps at 190° C.
New Jersey



and Saponification number of 40 mg/KOH/g


AC 597
Polypropylene-maleic anhydride
Honeywell, Morristown,



copolymer with viscosity 374 cps at 190° C.
New Jersey



and Saponification number of 80 mg/KOH/g


AC X1325
Polypropylene-maleic anhydride
Honeywell, Morristown,



copolymer with viscosity 1490 cps at
New Jersey



190° C. and acid number of 16 mg/KOH/g


A-C-1302P
Ethylene-maleic anhydride copolymer
Honeywell, Morristown,



with viscosity of 248 cP at 190° C. and
New Jersey



Saponification number of 5 mg KOH/g


PP-grafted maleic
PP-grafted maleic anhydride with
Sigma-Aldrich, Product


anhydride
averaged Mw of ~9,100, Mn of ~3,900
number: 42784-5



by GPC, viscosity of 400 cP at 190° C.,



acid number of 47 mg KOH/g, softening



point of 157° C. (ring and ball) and



density of 0.934 g/ml


MAPP 40
Maleated polypropylene with acid value
Chusei, Pasadena, Texas



of 45~50, viscosity at 190° C. of 400–425 cp,



and soft point of 143~155° C.


Paraflint H-1
Fisher-Tropsch wax, 10 mPa @ 250° F.
Moore and Munger


C80 wax
Fischer Tropsch fractionated wax
Moore and Munger







Antioxidants and other additives









Irganox 1010
Phenolic antioxidant
Ciba-Geigy







Test surfaces (substrates)









Paperboard 84B
Generic poster board clay coated
Huckster Packaging and



newsprint
Supply, Houston, Texas


Paperboard 84C
Generic corrugated cardboard 200#
Huckster Packaging and



stock
Supply, Houston, Texas


Inland paper
High Performance box board
Inland Paper Board and


board

Packaging Company of




Rome


Black white fabric
Printed stretch 100% Cotton with a
High Fashion Fabrics,



Thread Count of 17 by 13 per square
Houston, Texas



cm, a more loosely woven fabric


Formica
Tabs were made from standard sheet
Lowe's Hardware,



Formica
Houston, Texas


Blue fabric
Tabs were made from Blue Stock
High Fashion Fabrics,



038C0TP 100% Cotton, Thread Count
Houston, Texas.



21 by 45 per square cm with a weight of



0.022 grams per square cm, a tightly



woven cotton fabric


Seton catalog
Book paper bound by a hot melt process
Seton Catalog


paper
as determined from examination


PET
Polyester (PET), Commonly called
Several Sources



Mylar


Kraft paper
Kraft paper
Georgia Pacific, Atlanta,




Georgia


File folder
File folder is a typical manila letter size
Smead Paper, stock



(1⁄3 cut) stock having a minimum of
number 153L, UPC



10% post consumer recycle paper
number 10330



content


PP cast film
Polypropylene cast film PP4772.
ExxonMobil Chemical




Company









As examples, the adhesive formulation and adhesive performance for selected polymers produced using current invention are listed in the following tables.








TABLE 7







Adhesion tests of substrate fiber tear (Dot-T peel)















HMA1
HMA2
HMA3
HMA4
HMA5
HMA6
HMA7





Polymer
1b
1b
1a
1a
2a
2a
2a


Polymer (wt. %)
100  
87


100
89.5
89.5


Irganox 1010
 0
0



0.5
0.5


(wt. %)


MAPP 40 (wt. %)
 0
2.5


AC1302P (wt. %)






10


C80 wax (wt. %)
 0
7



5


Escorez 5690
 0
3.5


(wt. %)


Escorez 2203





5


(wt. %)


Shore A hardness
 95
94


94
93
96


Set time (sec)
   6+
3.5~4  


3.5
3.5
3.5


Viscosity @ 177° C.

1490


(cps)


Viscosity @ 190° C.





1790
2190


(cps)


Fiber tear at low


temperatures


Paperboard 84 C
 11
97


overnight at 2° C.


(%)


Paperboard 84 C




97
48
97


overnight at −10° C.


(%)


Paperboard 84 C




98
93
95


overnight at −30° C.


(%)


Inland Paper Board
 1
84


overnight at 2° C.


(%)


Inland paper board
0, af
90


overnight at 6° C.


(%)


Inland Paper Board
0, af, ab
45


49
19
5


overnight at −10° C.


(%)


Inland Paper Board




72
0, af, ab
0, af, ab


overnight at −30° C.


(%)


Fiber tear at ambient


condition


Inland paper board
0, af, ab
97


0, af
0, af
0, af


Paperboard 84 C
 55
97


6
9
0, af





af—adhesive failure,


ab—adhesive break,


set time: 6+ - set time was longer than 6 seconds.













TABLE 8







Adhesion tests of substrate fiber tear (Dot-T peel)















HMA8
HMA9
HMA10
HMA11
HMA12
HMA13
HMA14





Polymer
5a
5a
5a
5b
5b
5c
5c


Polymer (wt. %)
100
89.5
89.5
100
87
100
87


Irganox 1010

0.5
0.5


(wt. %)


MAPP 40 (wt. %)




2.5

2.5


AC1302P (wt. %)


10


C80 wax (wt. %)

5


7

7


Escorez 5690




3.5

3.5


(wt. %)


Escorez 2203

5


(wt. %)


Shore A hardness
97
95
95
 94
92
 93
87


Set time (sec)
5
2
2
    6+
3
   6+
2.5


Viscosity @

482.5
585
1610
1050
433
315


177° C. (cps)


Viscosity @

351
448


190° C. (cps)


Fiber tear at low


temperatures


Paperboard 84 C
10
0, af, ab
2


overnight at −10° C.


(%)


Paperboard 84 C
69
5
75


overnight at −30° C.


(%)


Inland Paper Board



  2
74
0, af, ab
74


overnight at 0° C.


(%)


Inland Paper Board
0, af, ab
0, af, ab
0, af, ab
 10
74
0, af, ab
58


overnight at −10° C.


(%)


Inland Paper Board
0, af, ab
0, af, ab
0, af, ab
  5
55
0, af, ab
0, af, ab


overnight at −30° C.


(%)


Fiber tear at ambient


condition


Inland paper board
0, af
0, af
0, af
  3
10
0, af
90


Paperboard 84 C
0, af
0, af
0, af





Af—adhesive failure,


ab—adhesive break,


set time: 6+ - set time was longer than 6 seconds.













TABLE 9







Adhesion tests of substrate fiber tear (Dot-T peel)














HMA15
HMA16
HMA17
HMA18
HMA19
HMA20





Polymer
2c
2c
2c
2d
2d
2d


Polymer (wt. %)
100
89.5
87
100
89.5
87


MAPP 40 (wt. %)


2.5


2.5


C80 wax (wt. %)

7
7

7
7


Escorez 5690 (wt. %)

3.5
3.5

3.5
3.5


Shore A hardness
 59
60
58
81
82
87


Set time (sec)
   6+
3~3.5
3.5~4
6
3
2.5


Low temperature fiber tear


Paperboard 84 C overnight
 94
99
100
88
30
98


at 6° C. (%)


Inland paper board
 95
82
100
90
49
100


overnight at 6° C. (%)


Inland Paper Board
 90
93
99
73
47
100


overnight at −5° C. (%)


Inland Paper Board
 66
30
81
35
27
93


overnight at −25~−30° C.


(%)


Fiber tear at ambient


condition


Inland paper board
 97
99
100
70
69
100


Paperboard 84 C
100
99
100
65
25
100
















TABLE 10







Dot T-peel strength to Mylar and failure types














HMA21
HMA22
HMA23
HMA24
HMA25
HMA26





Polymer
2c
2d
6a
1a
4c
3d


Polymer (wt. %)
100
100
100
100
100
100


Shore A hardness
51
81
38
29
79
35


Dot T-Peel failure
CF, AF,
AF, SS
AF, CF
CF
AF
CF


type
SS


Peel force to Mylar
1.954
0.017
2.549
2.819
0.0083
3.84


(aged for three days)


(lbf)





cf—cohesive failure;


af—adhesive failure;


ab—adhesive break,


sf—substrate failure;


ss—slip stick













TABLE 11







Dot T-peel strength to Mylar and failure types














HMA27
HMA28
HMA29
HMA30
HMA31
HMA32





Polymer
2c
2d
6a
1a
4c
3d


Polymer (wt. %)
70
70
70
70
70
70


Escorez 5637
30
30
30
30
30
30


(wt. %)


Viscosity @
1032
1032
2770
1830
2305
3230


190° C. (cp)


Shore A hardness
42
71
56
31
73
33


Dot T-Peel failure
CF
AF, CF
CF, AF
CF
CF, AF
CF


type


Peel force to
19.47
19.71
13.31
17.82
8.506
21.98


Mylar (aged


for three days) (lbf)





cf—cohesive failure;


af—adhesive failure;


ab—adhesive break;


sf—substrate failure;


ss—slip stick.






While the invention has been described with reference to an exemplary embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.

## Claims

1. A continuous process to produce a branched olefin polymer comprising:
1) selecting a first catalyst component capable of producing a polymer having a weight of 100,000 or less and a crystallinity of 20% or less under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having a weight average molecular weight of 100,000 or less and a crystallinity of 20% or more at the selected polymerization conditions;
3) contacting a said first catalyst component or said second catalyst component, one or more activators, and one or more C2 to C40 olefins in a first reaction zone, at a temperature of greater than 70° C., and at a residence time of 120 minutes or less; and
4) transfering the contents of the first reaction zone directly to a second reaction zone and further contacting the contents with said first catalyst component, or said second catalyst component, one or more activator, and one or more C2 to C40 olefins, at a temperature of greater than 70° C., and at a residence time of 120 minutes or less; and
5) optionally, transferring the contents of the second reaction zone directly to a third reaction zone and further contacting the contents with said first catalyst component or said second catalyst component, one or more activators, and one or more C2 to C40 olefins, at a temperature of greater than 70° C., and at a residence time of 120 minutes or less; and
6) recovering a branched olefin polymer comprising at least 50 mole % of one or more C3 to C40 olefins,
wherein:
a) the first catalyst is present in at least one reaction zone selected from of the first and second reaction zones and second catalyst is present in at least one reaction zone; and
(b) in at least one of the first and the second of the first and second reaction zones the C2 to C40 olefin is a C3 to C40 alpha-olefin.

2. The process of claim 1 wherein the olefin polymer comprises from 50 to 100 mole % of propylene.

3. The process of claim 1 wherein the olefin polymer is homopolypropylene.

4. The process of claim 1 wherein the first catalyst component comprises a non-stereospecific metallocene catalyst compound.

5. The process of claim 1 wherein the second catalyst component comprises a stereospecific metallocene catalyst compound.

6. The process of claim 1 wherein propylene is present in the first reaction zone.

7. The process of claim 1 wherein propylene is present in the second reaction zone.

8. The process of claim 1 wherein propylene is present in a third reaction zone.

9. The process of claim 1 wherein ethylene is present in the first reaction zone.

10. The process of claim 1 wherein ethylene is present in the second reaction zone.

11. The process of claim 1 wherein ethylene is present in a third reaction zone.

12. The process of claim 1 wherein propylene and ethylene are present in the first reaction zone.

13. The process of claim 1 wherein propylene and ethylene are present in the second reaction zone.

14. The process of claim 1 wherein propylene is present in the first reaction zone at 100 weight %, based upon the weight of the monomers present.

15. The process of claim 1 wherein propylene is present in the second reaction zone at 100 weight %, based upon the weight of the monomers present.

16. The process of claim 1 wherein propylene is present in a third reaction zone at 100 weight %, based upon the weight of the monomers present.

17. The process of claim 1 wherein propylene is present in the first reaction zone at 100 weight %, (based upon the weight of the monomers present in the first reaction zone) and ethylene is present in the second reaction zone at up to 50 weight %, based upon the weight of the monomers present in the second reaction zone.

18. The process of claim 1 wherein propylene and ethylene are present in the first reaction zone and no ethylene, other than residual ethylene monomer present in the contents of the first reaction zone, is introduced into the second reaction zone.

19. The process of claim 1 wherein ethylene is intermittently introduced into one or more reaction zones.

20. The process of claim 1 wherein ethylene is present in a reaction zone at less than 10 weight %, based upon the weight of the monomers in the reaction zone.

21. The process of claim 1 wherein propylene is present in the first reaction zone, ethylene is present in the second reaction zone, the second catalyst component is present in the first reaction zone, and the first catalyst component is present in the second reaction zone.

22. The process of claim 1 wherein propylene is present in the first reaction zone, propylene and ethylene are present in the second reaction zone, the second catalyst component is present in the first reaction zone, and the first catalyst component is present in the second reaction zone.

23. The process of claim 1 wherein propylene and ethylene are present in the first reaction zone, propylene is present in the second reaction zone, the first catalyst component is present in the first reaction zone, and the second catalyst component is present in the second reaction zone.

24. The process of claim 1 wherein propylene is present in the first reaction zone, propylene and ethylene are present in the second reaction zone, the second catalyst component is present in the first reaction zone, and the second catalyst component is present in the second reaction zone.

25. The process of claim 1 wherein ethylene is present in the first reaction zone, propylene is present in the second reaction zone, propylene is present in the third reaction zone, the first catalyst component is present in the second reaction zone, and the second catalyst component is present in the third reaction zone, and the catalyst component present in the first reaction zone is capable of producing polymer having a weight average molecular weight of 20,000 or less and a crystallinity of 10% or less at the selected polymerization conditions.

26. The process of claim 1 wherein
1) the first catalyst component comprises a non-stereospecific metallocene catalyst compound;
2) the second catalyst component comprises a sterospecific metallocene catalyst compound;
3) the first reaction zone is a reactor comprising solvent, monomer, said first catalyst component or said second catalyst component, and activator at a temperature of greater than 700° C.; and
4) The second reaction zone is a reactor comprising solvent, monomer, said first catalyst component or said second catalyst component, and activator at a temperature of greater than 700° C.

27. The process of claim 1 wherein the first catalyst component capable of producing polymer having a weight average molecular weight of 100,000 or less and a crystallinity of 20% or less is selected from the group consisting of: rac-dimethylsilylbis(4,7-dimethylindenyl)hafnium dichloride, rac-dimethylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, rac-dimethylsilylbis(4,7-dimethylindenyl)zirconium dichloride, rac-dimethylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, rac-dimethylsilylbis(indenyl)hafnium dichloride, rac-dimethylsilylbis(indenyl)hafnium dimethyl, rac-dimethylsilylbis(indenyl)zirconium dichloride, rac-dimethylsilylbis(indenyl)zirconium dimethyl, rac-dimethylsilylbis(tetrahydroindenyl)hafnium dichloride, rac-dimethylsilylbis(tetrahydroindenyl)hafnium dimethyl, rac-dimethylsilylbis(tetrahydroindenyl)zirconium dichloride, rac-dimethylsilylbis(tetrahydroindenyl)zirconium dimethyl, rac-diphenylsilylbis(4,7-dimethylindenyl)hafnium dichloride, rac-diphenylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, rac-diphenylsilylbis(4,7-dimethylindenyl)zirconium dichloride, rac-diphenylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, rac-diphenylsilylbis(indenyl)hafnium dichloride, rac-diphenylsilylbis(indenyl)hafnium dimethyl, rac-diphenylsilylbis(indenyl)zirconium dichloride, rac-diphenylsilylbis(indenyl)zirconium dimethyl, rac-diphenylsilylbis(tetrahydroindenyl)hafnium dichloride, rac-diphenylsilylbis(tetrahydroindenyl)hafnium dimethyl, rac-diphenylsilylbis(tetrahydroindenyl)zirconium dichloride, rac-diphenylsilylbis(tetrahydroindenyl)zirconium dimethyl, rac-methylphenylsilylbis(4,7-dimethylindenyl)hafnium dichloride, rac-methylphenylsilylbis(4,7-dimethylindenyl)hafnium dimethyl, rac-methylphenylsilylbis(4,7-dimethylindenyl)zirconium dichloride, rac-methylphenylsilylbis(4,7-dimethylindenyl)zirconium dimethyl, rac-methylphenylsilylbis(indenyl)hafnium dichloride, rac-methylphenylsilylbis(indenyl)hafnium dimethyl, rac-methylphenylsilylbis(indenyl)zirconium dichloride, rac-methylphenylsilylbis(indenyl)zirconium dimethyl, rac-methylphenylsilylbis(tetrahydroindenyl)hafnium dichloride, rac-methylphenylsilylbis(tetrahydroindenyl)hafnium dimethyl, rac-methylphenylsilylbis(tetrahydroindenyl)zirconium dichloride, rac-methylphenylsilylbis(tetrahydroindenyl)zirconium dimethyl, rac-ethylenebis(4,7-dimethylindenyl)hafnium dichloride, rac-ethylenebis(4,7-dimethylindenyl)hafnium dimethyl, rac-ethylenebis(4,7-dimethylindenyl)zirconium dichloride, rac-ethylenebis(4,7-dimethylindenyl)zirconium dimethyl, rac-ethylenebis(indenyl)hafnium dichloride, rac-ethylenebis(indenyl)hafnium dimethyl, rac-ethylenebis(indenyl)zirconium dichloride, rac-ethylenebis(indenyl)zirconium dimethyl, rac-ethylenebis(tetrahydroindenyl)hafnium dichloride, rac-ethylenebis(tetrahydroindenyl)hafnium dimethyl, rac-ethylenebis(tetrahydroindenyl)zirconium dichloride, and rac-ethylenebis(tetrahydroindenyl)zirconium dimethyl.

28. The process of claim 1 wherein the first catalyst component comprises one or more of
dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dichloride,
dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
dimethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)titanium dichloride,
dimethylsilyl(tetramethylcyclopentadienyl)(s-butylamido)titanium dichloride,
dimethylsilyl(tetramethylcyclopentadienyl)(n-butylamido)titanium dichloride,
dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbomylamido)titanium dichloride,
diethylsilyl(tetramethylcyclopentadienyl)(cyclododecyl-amido)titanium dichloride,
diethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbormylamido)titanium dichloride,
diethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dichloride,
diethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
methylene(tetramethylcyclopentadienyl)(cyclododecyl-amido)titanium dichloride,
methylene(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride,
methylene(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
methylene(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
dimethylsilyl(2,5-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride,
dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
dimethylsilyl(2,5-dimethylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
dimethylsilyl(3,4-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride,
dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
dimethylsilyl(3,4-dimethylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(exo-2-norbornylamido)titanium dichloride,
dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclododecylamido)titanium dichloride,
dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(exo-2-norbonylamido)titanium dichloride,
dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclododecylamido)titanium
dichloride,
dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(exo-2-norbonylamido)titanium dichloride,
dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclohexylamido)titanium dichloride,
dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(1-adamantylamido)titanium dichloride,
dimethylsilyl(2-tetrahydroindenyl)(cyclododecylamido)titanium dichloride,
dimethylsilyl(2-tetrahydroindenyl)(cyclohexylamido)titanium dichloride,
dimethylsilyl(2-tetrahydroindenyl)(1-adamantylamido)titanium dichloride,
dimethylsilyl(2-tetrahydroindenyl)(exo-2-norbonylamido)titanium dichloride,
dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(t-butylamido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(s-butylamido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(n-butylamido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbonylamido)titanium dimethyl,
diethylsilyl(tetramethylcyclopentadienyl)(cyclododecyl-amido)titanium dimethyl,
diethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
diethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dimethyl,
diethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
methylene(tetramethylcyclopentadienyl)(cyclododecyl-amido)titanium dimethyl,
methylene(tetramethylcyclopentadienyl)(exo-2-norbonylamido)titanium dimethyl,
methylene(tetramethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
methylene(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(cyclohexyl-amido)titanium dimethyl,
dimethylsilyl(tetramethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
dimethylsilyl(2,5-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
dimethylsilyl(2,5-dimethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
dimethylsilyl(2,5-dimethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
dimethylsilyl(3,4-dimethylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
dimethylsilyl(3,4-dimethylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
dimethylsilyl(3,4-dimethylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
dimethylsilyl(2-ethyl-5-methylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(exo-2-norbonylamido)titanium dimethyl,
dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
dimethylsilyl(3-ethyl-4-methylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclododecylamido)titanium dimethyl,
dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(exo-2-norbornylamido)titanium dimethyl,
dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(cyclohexylamido)titanium dimethyl,
dimethylsilyl(2-ethyl-3-hexyl-5-methyl-4-octylcyclopentadienyl)(1-adamantylamido)titanium dimethyl,
dimethylsilyl(2-tetrahydroindenyl)(cyclododecylamido)titanium dimethyl,
dimethylsilyl(2-tetrahydroindenyl)(cyclohexylamido)titanium dimethyl,
dimethylsilyl(2-tetrahydroindenyl)(1-adamantylamido)titanium dimethyl, and
dimethylsilyl(2-tetrahydroindenyl)(exo-2-norbornylamido)titanium dimethyl.

29. The process of claim 1 wherein the second catalyst component comprises one or more of the racemic versions of:
dimethylsilyl (2-methyl-4-phenylindenyl)zirconium dichloride,
dimethylsilyl (2-methyl-4-phenylindenyl)zirconium dimethyl,
dimethylsilyl (2-methyl-4-phenylindenyl)hafnium dichloride,
dimethylsilyl (2-methyl-4-phenylindenyl)hafnium dimethyl,
dimethylsilyl bis(indenyl)hafnium dimethyl,
dimethylsilyl bis(indenyl)hafnium dichloride,
dimethylsilyl bis(indenyl)ziconium dimethyl,
dimethylsilyl bis(indenyl)zirconium dichloride,
the racemic isomers of:
dimethylsilanediylbis(2-methyl)metal dichloride;
dimethylsilanediylbis(indenyl)metal dichloride;
dimethylsilanediylbis(indenyl)metal dimethyl;
dimethylsilanediylbis(tetrahydroindenyl)metal dichloride
dimethylsilanediylbis(tetrahydroindenyl)metal dimethyl;
dimethylsilanediylbis(indenyl)metal diethyl; and
dibenzylsilanediylbis(indenyl)metal dimethyl;
wherein the metal can be chosen from Zr, Hf, or Ti.

30. The process of claim 1 wherein the first catalyst component comprises 1,1′-bis(4-triethylsilylphenyl)methylene-(cyclopentadienyl)(2,7-di-tertiary-butyl-9-fluorenyl)hafnium dimethyl and or 1,1′-bis(4-triethylsilylphenyl)methylene-(cyclopentadienyl)(3,8-di-tertiary-butyl-fluorenyl)hafnium dimethyl.

31. The process of claim 1 wherein the second catalyst component comprises dimethylsilyl bis(2-methyl-5-phenylindenyl)zirconium dimethyl and/or dimethylsilyl bis(2-methyl-4-phenylindenyl)zirconium dimethyl.

32. The process of claim 1 wherein the activator comprises dimethylaniliniumtetrakis(pentafluorophenyl)borate and or trityl tetrakis(pentafluorophenyl)borate.

33. The process of claim 1 wherein the activator comprises an alumoxane.

34. The process of claim 1 wherein the activator comprises an ionizing compound.

35. The process of claim 1 wherein the activator comprises a non-coordinating anion.

36. The process of claim 1 wherein the activator comprises one or more of methylalumoxane,
trimethylammonium tetraphenylborate,
triethylammonium tetraphenylborate,
tripropylammonium tetraphenylborate,
tri(n-butyl)ammonium tetraphenylborate,
tri(t-butyl)ammonium tetraphenylborate,
N,N-dimethylanilinium tetraphenylborate,
N,N-diethylanilinium tetraphenylborate,
N,N-dimethyl-(2,4,6-trimethylanilinium)tetraphenylborate,
trimethylammonium tetrakis(pentafluorophenyl)borate,
triethylammonium tetrakis(pentafluorophenyl)borate,
tripropylammonium tetrakis(pentafluorophenyl)borate,
tri(n-butyl)ammonium tetrakis(pentafluorophenyl)borate,
tri(sec-butyl)ammonium tetrakis(pentafluorophenyl)borate,
N,N-dimethylanilinium tetrakis(pentafluorophenyl)borate,
N,N-diethylanilinium tetrakis(pentafluorophenyl)borate,
N,N-dimethyl-(2,4,6-trimethylanilinium)tetrakis(pentafluorophenyl)borate, trimethylammonium tetrakis-(2,3,4,6-tetrafluorophenylborate,
triethylammonium tetrakis-(2,3,4,6-tetrafluorophenyl)borate,
tripropylammonium tetrakis-(2,3,4,6-tetrafluorophenyl)borate,
tri(n-butyl)ammonium tetrakis-(2,3,4,6-tetrafluoro-phenyl)borate,
dimethyl(t-butyl)ammonium tetrakis-(2,3,4,6-tetrafluorophenyl)borate,
N,N-dimethylanilinium tetrakis-(2,3,4,6-tetrafluorophenyl)borate,
N,N-diethylanilinium tetrakis-(2,3,4,6-tetrafluorophenyl)borate, and
N,N-dimethyl-(2,4,6-trimethylanilinium)tetrakis-(2,3,4,6-tetrafluorophenyl)borate;
di-(i-propyl)ammonium tetrakis(pentafluorophenyl)borate;
dicyclohexylammonium tetrakis(pentafluorophenyl)borate;
triphenylphosphonium tetrakis(pentafluorophenyl)borate;
tri(o-tolyl)phosphonium tetrakis(pentafluorophenyl)borate; and
tri(2,6-dimethylphenyl)phosphonium tetrakis(pentafluorophenyl)borate.

37. The process of claim 1 wherein the first catalyst component is capable of polymerizing macromonomers having reactive termini; and the second component is capable of producing macromonomers having reactive termini.

38. The process of claim 1 wherein one or more reaction zones further comprise diolefin.

39. The process of claim 1 wherein one or more reaction zones further comprise one or more C4 to C40 dienes.

40. The process of claim 1 wherein one or more reaction zones further comprise one or more dienes selected from the group consisting of 1,6-heptadiene, 1,7-octadiene, 1,8-nonadiene, 1,9-decadiene, 1,10-undecadiene, 1,11-dodecadiene, 1,12-tridecadiene, 1,13-tetradecadiene, cyclopentadiene, vinylnorbornene, norbornadiene, ethylidene norbornene, divinylbenzene, dicyclopentadiene, polybutadienes having an Mw less than 1000 g/mol, or combinations thereof.

41. The process of claim 1 wherein at least one reaction zone is a gas phase reactor.

42. The process of claim 1 wherein at least one reaction zone is a solution phase reactor.

43. The process of claim 1 wherein at least one reaction zone is a slurry phase reactor.

44. The process of claim 1 wherein all of the reaction zones are a solution phase reactor.

45. The process of claim 1 wherein the first catalyst component, the second catalyst component and the activator comprise one or more of the following combinations (where Me equals methyl, Ph equals phenyl, Et equals ethyl, Cp equals cyclopentadienyl, 3,8-di-t-BuFlu equals 3,8-di-tert-butylfluorenyl, 2-Me-4-PhInd equals 2-methyl-4-phenylindenyl, 2-MeInd means 2-methylindenyl, c-C12H23 equals cyclododecyl, Me4C5-tetramethylcyclopentadienyl, H4Ind equals tetrahydroindenyl, and Ind equals indenyl):
(1) Me2Si(Me4C5)(N-c-C12H23)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
(2) Me2Si(Me4C5)(N-c-C12H23)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator,
(2a) Me2Si(Me4C5)(N-c-C12H23)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(3) Me2Si(Me4C5)(N-c-C12H23)TiCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
(4) Me2Si(Me4C5)(N-c-C12H23)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
(4a) Me2Si(Me4C5)(N-c-C12H23)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(5) Me2Si(Me4C5)(N-1-adamantyl)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
(6) Me2Si(Me4C5)(N-1-adamantyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
(6a) Me2Si(Me4C5)(N-1-adamantyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(7) Me2Si(Me4C5)(N-1-adamantyl)TiCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
(8) Me2Si(Me4C5)(N-1-adamantyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
(8a) Me2Si(Me4C5)(N-1-adamantyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(9) Me2Si(Me4C5)(N-t-butyl)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
(10) Me2Si(Me4C5)(N-t-butyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
(10a) Me2Si(Me4C5)(N-t-butyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(11) Me2Si(Me4C5)(N-t-butyl)TiCl2 and rac-Me2Si(2-MeInd) activated with an alumoxane;
(12) Me2Si(Me4C5)(N-t-butyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
(12a) Me2Si(Me4C5)(N-t-butyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(13) Me2Si(Me4C5)(N-exo-norbornyl)TiCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
(14) Me2Si(Me4C5)(N-exo-norbornyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
(14a) Me2Si(Me4C5)(N-exo-norbornyl)TiMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(15) Me2Si(Me4C5)(N-exo-norbornyl)TiCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
(16) Me2Si(Me4C5)(N-exo-norbornyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
(16a) Me2Si(Me4C5)(N-exo-norbornyl)TiMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(17) (P-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
(18) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
(18a) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(19) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
(20) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
(20a) (p-Et3SiPh)2C(Cp)(3,8-di-t-BuFlu)HfMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(21) meso-CH2CH2(Ind)2ZrCl2 and rac-Me2Si(H4Ind)2ZrCl2 activated with an alumoxane;
(22) meso-CH2CH2(Ind)2ZrMe2 and rac-Me2Si(H4Ind)2ZrMe2 activated with a non-coordinating anion activator;
(22a) meso-CH2CH2(Ind)2ZrMe2 and rac-Me2Si(H4Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(23) meso-CH2CH2(Ind)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
(24) meso-CH2CH2(Ind)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
(24a) meso-CH2CH2(Ind)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(25) meso-Me2Si(Ind)2ZrCl2 and rac-Me2Si(H4Ind)2ZrCl2 activated with an alumoxane;
(26) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(H4Ind)2ZrMe2 activated with a non-coordinating anion activator;
(26a) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(H4Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(27) meso-Me2Si(Ind)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
(28) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
(28a) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(29) meso-Me2Si(2-MeInd)2ZrCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
(30) meso-Me2Si(2-MeInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
(30a) meso-Me2Si(2-MeInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(31) meso-Me2Si(2-MeInd)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
(32) meso-Me2Si(2-MeInd)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
(32a) meso-Me2Si(2-MeInd)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(33) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
(34) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
(34a) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(35) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-Me2Si(2-MeInd)2ZrCl2 activated with an alumoxane;
(36) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
(36a) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-Me2Si(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(37) meso-Me2Si(2-Me-4-PhInd)2ZrCl2 and rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
(38) meso-Me2Si(2-Me-4-PhInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
(38a) meso-Me2Si(2-Me-4-PhInd)2ZrMe2 and rac-Me2Si(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(39) meso-CH2CH2(2-Me-4-PhInd)2ZrCl2 and rac-CH2CH2(2-Me-4-PhInd)2ZrCl2 activated with an alumoxane;
(40) meso-CH2CH2(2-Me-4-PhInd)2ZrMe2 and rac-CH2CH2(2-Me-4-PhInd)2ZrMe2 activated with a non-coordinating anion activator;
(40a) meso-CH2CH2(2-Me-4-PhInd)2ZrMe2 and rac-CH2CH2(2-Me-4-PhInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(41) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-CH2CH2(2-MePhInd)2ZrCl2 activated with an alumoxane;
(42) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-CH2CH2(2-MeInd)2ZrMe2 activated with a non-coordinating anion activator;
(42a) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-CH2CH2(2-MeInd)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(43) meso-CH2CH2(Ind)2ZrCl2 and rac-CH2CH2(Ind)2ZrCl2 activated with an alumoxane;
(44) meso-CH2CH2(Ind)2ZrMe2 and rac-CH2CH2(Ind)2ZrMe2 activated with a non-coordinating anion activator;
(44a) meso-CH2CH2(Ind)2ZrMe2 and rac-CH2CH2(Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(45) meso-Me2Si(Ind)2ZrCl2 and rac-Me2Si(Ind)2ZrCl2 activated with an alumoxane;
(53) meso-Me2Si(2-MeInd)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 activated with an alumoxane;
(54) meso-Me2Si(2-MeInd)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator; or
(54a) meso-Me2Si(2-MeInd)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron.

46. The process of claim 1 wherein:
1) the first catalyst component is capable of producing a polymer having a weight average molecular weight of 80,000 or less and a crystallinity of 15% or less under selected polymerization conditions;
2) the a second catalyst component is capable of producing polymer having a weight of 80,000 or less and a crystallinity of 50% or more at the selected polymerization conditions;
3) the temperature in the reaction zones is greater than 105° C.;
4) the residence time in the reaction zones is 10 minutes or less;
5) the ratio of the first catalyst to the second catalyst is from 1:1 to 20:1;
6) wherein the activity of the catalyst components is at least 100 kilograms of polymer per gram of the catalyst compounds; and wherein at least 80% of the olefins are converted to polymer.

47. The process of claim 46 wherein:
a) the olefins comprise propylene and one or more of butene, pentene, hexene, heptene, octene; nonene, decene, dodecene; and
b) the temperature is greater than 110° C.; and
c) the residence time is 5 minutes or less; and
d) the ratio of the first catalyst to the second catalyst is from 1:1 to 1:10.

48. The process of claim 1 wherein the step of recovering a branched olefin polymer comprising at least 50 mole % of one or more C3 to C40 olefins comprises:
1) withdrawing polymer solution from the reaction zone;
2) removing at least 10% solvent from the polymer solution;
3) quenching the reaction;
4) devolatilizing the polymer solution to form molten polymer;
(46) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(Ind)2ZrMe2 activated with a non-coordinating anion activator;
(46a) meso-Me2Si(Ind)2ZrMe2 and rac-Me2Si(Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(47) meso-CH2CH2(Ind)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 (4,7-Me2Ind=4,7-dimethylindenyl) activated with an alumoxane;
(48) meso-CH2CH2(Ind)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2, activated with a non-coordinating anion activator;
(48a) meso-CH2CH2(Ind)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(49) meso-Me2Si(Ind)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 activated with an alumoxane;
(50) meso-Me2Si(Ind)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator;
(50a) meso-Me2Si(Ind)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
(51) meso-CH2CH2(2-MeInd)2ZrCl2 and rac-CH2CH2(4,7-Me2Ind)2ZrCl2 (4,7-Me2Ind=4,7-dimethylindenyl) activated with an alumoxane;
(52) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with a non-coordinating anion activator;
(52a) meso-CH2CH2(2-MeInd)2ZrMe2 and rac-CH2CH2(4,7-Me2Ind)2ZrMe2 activated with N,N-dimethylanilinium tetrakis(pentaflourophenyl)boron and or triphenylcarbonium tetrakis(pentaflourophenyl)boron;
5) combining the molten polymer and one or more additives in a static mixer;
6) removing the polymer combination from the static mixer; and
7) pelletizing or drumming the polymer combination.

49. The process of claim 48 wherein the additives in step 5) comprise nucleating agent.

50. The process of claim 1 wherein the second catalyst component comprises one or more of:
dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-methyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-isobutyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dichloride;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2hafnium dimethyl;
dimethylsiladiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylsiladiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
9-silafluorendiyl(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
dimethylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
dimethylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconiumdimethyl;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
dimethylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
diisopropylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
diisopropylamidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
diisopropylamidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dichloride;
bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2η4-1,4-diphenyl-1,3-butadiene;
bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-tbutylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-bis-trifluoromethylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl
bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-iso-propylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-methyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-ethyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-n-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl; bis(trimethylsilyl)amidoborane(2-iso-propyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-n-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-iso-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl;
bis(trimethylsilyl)amidoborane(2-sec-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl; or
bis(trimethylsilyl)amidoborane(2-tert-butyl, 4-[3′,5′-di-phenylphenyl]indenyl)2zirconium dimethyl.

51. The process of claim 1 wherein the first catalyst component is also present in the second reaction zone.

52. The process of claim 1 wherein one catalyst component is present in at least one reaction zone and the other catalyst component is present in the second reaction zone.

53. The process of claim 1 wherein 3% or more of the combined catalyst components is not injected into the first reaction zone.

54. The process of claim 1 wherein hydrogen is introduced into a reaction zone.

55. The process of claim 1 wherein the temperature is different in the reaction zones.

56. The process of claim 1 wherein the temperature in a reaction zone is varied.