Alkyl substituted siloxanes and alkyl substituted polyether fluids

Abstract: New alkyl substituted siloxanes and alkyl substituted polyether fluids are prepared by reacting an unsaturated alkyl, a aralkyl or ether with alkylhydrido siloxanes such as (i) comonomers of the formula RSi(OSiMe 2 H) 3 , (ii) oligomers of the formula (HMe 2 SiO) 2 -Si(R)-O-Si(R)-(OSiMe 2 H) 2 , and (iii) higher molecular weight siloxane species of the formula RSi[(OSiMe 2 ) x OSiMe 2 H] 3 and [HMe 2 SiO(Me 2 SiO) x ] 2 Si(R)O(R)Si[(OSiMe 2 ) x OSiMe 2 H] 2 . R is a C 2 to C 18 straight-chain or branched-chain alkyl substituent; and x has a value of 1-200.

Description: This invention introduces a family of alkyl substituted siloxanes and alkyl substituted polyether fluids as new compositions of matter. US Patent 5,446,185 describes a family of new alkylhydrido siloxanes including comonomers of the formula RSi(OSiMe 2 H) 3 , oligomers of the formula (HMe 2 SiO) 2 -Si(R)-O-Si(R)-(OSiMe 2 H) 2 and higher molecular weight siloxanes of the formula RSi[(OSiMe 2 ) x OSiMe 2 H] 3 or [HMe 2 SiO(Me 2 SiO) x ] 2 Si(R)O(R)Si[(OSiMe 2 ) x OSiMe 2 H] 2 ; in which Me is, and hereafter denotes, methyl; R is a C 2 to C 18 straight-chain or branched-chain alkyl substituent; and x has a value of 1-200. US Patent 5,488,124 teaches alkylpolyether siloxane compositions in general, but does not teach the specific compositions of the claimed invention. Our invention is an improvement over the prior art because a new family of alkyl substituted siloxanes and alkyl substituted polyether fluids are provided by hydrosilylation of the alkylhydrido siloxanes of US Patent No. 5,446,185. These new products are useful in personal care compositions, lubricants, polishes, paint additives, hydrophobing agents, emulsifiers and polyurethane foam stabilizers. The new alkyl substituted siloxanes claimed herein are compounds covered by one of the formulas: RSi(OSiMe 2 Q) 3 , (QMe 2 SiO) 2 Si(R)-O-Si(R) (OSiMe 2 Q) 2 , RSi [(OSiMe 2 ) x OSiMe 2 Q] 3 and [QMe 2 SiO(Me 2 SiO) x ] 2 Si(R)O(R)Si[(OSiMe 2 ) x OSiMe 2 Q] 2 In these formulas, Me is methyl; R is a C 2 to C 18 straight-chain or branched-chain alkyl substituent; x has a value of 1-200; and Q is independently the same or different alkyl, aralkyl or polyether group, with the proviso that at least one Q is an alkyl or aralkyl group. When Q is an alkyl group, Q is generally described as a linear or branched carbon chain having from 2 to 80 carbon atoms. Preferred alkyl groups are octyl, hexadecyl, octadecyl and tridecyl. Q is also an aralkyl group, having the formula (CHX) a -C 6 H 5 , where X is hydrogen atom or alkyl group having at least 2 carbon atoms. Preferred aralkyl groups are alpha-methyl styryl or styryl substituted groups. Q can also be a radical containing polyether groups, such as (poly) (oxyethylene), (poly)(oxypropylene) and (poly) (oxybutylene) or any combinations thereof. A representative Q radical is - (CH 2 ) y (OCH 2 CH 2 ) a (OCH 2 CH(CH 3 )) b [OCH 2 CH(CH 2 CH 3 )] c OR', where R' is hydrogen atom; an alkyl radical such as methyl, ethyl, propyl and butyl; an aryl radical such as phenyl; an aralkyl radical such as benzyl; and an acyl radical such as acetyl. The integer y is 3-6; a is 0-120; b is 0-100; and c is 0-50; with the proviso that a, b and c, cannot all be zero. The present invention also teaches a more efficient process for preparation of alkyl substituted siloxanes and alkyl substituted polyether fluids. In the art, a two step process was required to achieve complete reaction of SiH on the molecular backbone. Siloxanes of this invention are prepared by hydrosilylation of alkylhydrido siloxanes with alkenyl ether terminated organic oxyalkylene compounds. Alkylhydrido siloxanes such as RSi(OSiMe 2 H) 3 or (HMe 2 SiO) 2 Si(R)-O-Si(R)-(OSiMe 2 H) 2 are prepared in high yield by hydrolysis of the corresponding chlorosilanes. More complete details of such a reaction are given in US Patent 5,446,185. The reaction is briefly depicted as: In "Scheme 1", the amount of RSi(OSiMe 2 H) 3 obtained in the hydrolysis is dependent upon the temperature at which the reaction is conducted. Where R is n-propyl, hereinafter represented by Pr and the temperature is maintained at slightly below 15°C., 83% of the product is RSi(OSiMe 2 H) 3 ; at 30°C., 79% of the product is RSi(OSiMe 2 H) 3 ; and at 40°C., 47% of the product is RSi(OSiMe 2 H) 3 . At higher temperatures (40°C.+), larger amounts of (HMe 2 SiO) 2 -Si(R)-O-Si(R)(OSiMe 2 H) 2 and higher molecular weight species are formed. The products RSi(OSiMe 2 H) 3 and (HMe 2 SiO) 2 Si (R)-O-(R)Si(OSiMe 2 H) 2 from "Scheme 1", are useful in the preparation of higher molecular weight siloxane species. These higher molecular weight materials are prepared by an acid catalyzed ring opening of cyclic siloxanes, such as a dimethylcyclosiloxane, followed by insertion into RSi(OSiMe 2 H) 3 or (HMe 2 SiO) 2 Si(R)O(R)Si(OSiMe 2 H) 2 . Such a process is also described in greater detail by US Patent 5,446,183 and is briefly depicted below. The acid catalyst in "Scheme 2" is hydrochloric, sulfuric, phosphoric, oxalic, acetic, trichloroacetic or trifluoromethane sulfonic acids. The method of "Scheme 2" is conducted by creating a mixture of the cyclic siloxane (Me 2 SiO) a , RSi(OSiMe 2 H) 3 or (HMe 2 SiO) 2 Si(R)O(R)Si(OSiMe 2 H) 2 , (or mixtures thereof) and the acid catalyst. The mixture is next heated with agitation at a polymerization reaction temperature, until essentially all of the cyclic siloxane is reacted. The time required varies depending on the reactants and reaction conditions. The polymerization reaction of "Scheme 2" is stopped at the desired level of conversion of cyclic siloxane by using methods known in the art, such as neutralization of the catalyst by the addition of an equal, or slightly greater than stoichiometric, amount of base. A weak base is normally used to neutralize the reaction. The siloxanes of "Scheme 1" and "Scheme 2" include comonomers, oligomers and higher molecular weight siloxane species and are used as intermediates in the preparation of either our alkyl substituted siloxanes or our alkyl substituted polyether fluids. The R group in "Scheme 1" and "Scheme 2" is a C 2 to C 18 straight-chain (unbranched) or branched-chain alkyl substituent. Suitable R groups are ethyl; n-propyl; isopropyl; butyl; 2-methylpropyl; pentyl; 2-methylbutyl; 2,2-dimethylpropyl; hexyl; 2-methylpentyl; 3-methylpentyl; 2,2-dimethylbutyl; 2,3-dimethylbutyl; heptyl; 2-methylhexyl; 3-methylhexyl; 2,2-dimethylpentyl; 2,3-dimethylpentyl; 2,4-dimethylpentyl; 3,3-dimethylpentyl; 3-ethylpentyl; 2,2,3-trimethylbutyl; octyl; nonyl; decyl; undecyl; dodecyl; tridecyl; tetradecyl; pentadecyl; hexadecyl; heptadecyl and octadecyl. The cyclic siloxanes most suitable for "Scheme 2" are (i) hexamethylcyclotrisiloxane with a boiling point of 133°C. and the formula [(Me 2 )SiO] 3 ; (ii) octamethylcyclotetrasiloxane with a boiling point of 171°C. and the formula [(Me 2 )SiO] 4 ; (iii) decamethylcyclopentasiloxane with a boiling point of 205°C. and the formula [(Me 2 )SiO] 5 ; and (iv) dodecamethylcyclohexasiloxane with a boiling point of 245°C. and the formula [(Me 2 )SiO] 6 . In our process of preparing alkyl substituted siloxanes or alkyl substituted polyether fluids, one or more unsaturated alkyl or aralkyl groups and possibly an unsaturated polyether, are reacted via a hydrosilylation reaction with one of the above described alkylhydrido siloxanes containing the ≡SiH group. In any case, Q will be independently the same or different alkyl, aryl, aralkyl or polyether group, with the proviso that at least one Q is an alkyl or aralkyl group. In the case where a particular Q group is an alkyl group, the compositions of this invention are prepared by reacting the above described ≡SiH containing siloxanes with an unsaturated alkyl compound having from 2 to 30+ carbon atoms. These unsaturated alkyl compounds are generally represented by the formula CH 2 =CHR' where R' is a linear or branched alkyl group having up to 28 carbon atoms. Representative Q groups include octyl, dodecyl, hexadecyl, octadecyl and tridecyl. It is expected that in a given preparation of the compositions of our claimed invention, the unsaturated alkyl compounds will be the same or different, i.e. represented by the same or different R' groups. An example of where the R' groups are the same is illustrated below. The siloxane portion of the product is trifunctional, as shown above, or tetrafunctional, as in [R 1 Me2SiO(SiMe 2 O) x ] 2 SiR-O-RSi[(OSiMe2) x OSiMe2R 1 ] 2 . In the unsaturated hydrocarbons R' is hydrogen, linear or branched alkyl and aralkyl. In addition, two or more different types of hydrocarbon groups can be attached to the same siloxane to yield a silicone organic copolymer consisting of the branched alkyl (R) siloxane and two different hydrocarbons, R'. An example of how such a material is prepared is shown below. where, for example, R is C 2 to C 18 straight chain or branched alkyl, Me is methyl, Ph is, and hereafter denotes, phenyl, R 1 is (CH 2 ) 7 CH 3 , R 2 is (CH 2 CH(CH 3 )Ph and these groups are randomly arranged on the siloxane in a ratio of 2:1. The degree of substitution of the ≡SiH bearing siloxanes are generally controlled by the ratio of ≡SiH to the alkenyl groups of each different unsaturated compound bearing the R' group. Q can also be derived from an organic oxyalkylene compound which is alkenyl ether terminated. Suitable compounds contain at least C 3 to C 10 carbons in the alkenyl group and examples of useful groups are allyl, isopropenyl, 2-butenyl, 3-butenyl or hexenyl. Allyl is the most preferred alkenyl group and representative allyl ether terminated organic (poly)(oxyalkylene) compounds are: H 2 C=CH-CH 2 -O- (CH 2 -CH 2 O) m -R''; H 2 C=CH-CH 2 -O- [CH 2 -CH(CH 3 )O] n -R''; and H 2 C=CH-CH 2 -O-(CH 2 -CH 2 O) m -[CH 2 -CH(CH 3 )O] n -R''. In these formulas, m is 1-120; n is 1-100; and R'' is hydrogen atom; an alkyl radical such as methyl, ethyl, propyl or butyl; an aryl radical such as phenyl; an aralkyl radical such as benzyl; or an acyl radical such as acetyl. It is preferred to conduct the hydrosilylation reaction with an allyl to ≡SiH ratio of 1.0 to 1.2, although other ratios can be employed. The alkylpolyether siloxane products of the hydrosilylation reaction are made by reacting the allyl ether of the desired (poly)(oxyalkylene)compound with the corresponding siloxane containing ≡SiH groups. This reaction is performed by heating a mixture of the reactants in the presence of a platinum catalyst such as platinum dispersed on an inert carrier or a compound of platinum such as chloroplatinic acid, at temperatures from 30-100°C. The final products are prepared by hydrosilylation of the corresponding alkylhydrido siloxanes with alkenyloxy polyethers and alpha olefins. Representative hydrosilylation reactions of this invention are depicted in Schemes 5 and 6 as follows: The siloxane portion of the product can be trifunctional, as shown above, or tetrafunctional, as in [R 1 Me 2 SiO(SiMe 2 O) x ] 2 SiR-O-RSi[(OSiMe 2 ) x OSiMe 2 R 1 ] 2 . In the unsaturated hydrocarbons R 1 is hydrogen, linear or branched alkyl or aralkyl. The polyethers, R 2 , are (poly)(oxyethylene), (poly)(oxypropylene), (poly)(oxybutylene) or any combination. In addition, different types of hydrocarbon groups or polyether groups can be attached to the same siloxane to yield a silicone organic polymer consisting of the branched, alkyl (R) substituted siloxane and two or more different hydrocarbons, R 1 , or two or more different polyether groups, R 2 . An example of how such a material is prepared is shown below: where R 1 is (CH 2 ) 7 CH 3 , R 2 is CH 2 =CHCH 2 -O-(CH 2 CH 2 O) 7 H, R 3 is CH 2 =CHCH 2 -O- (CH 2 CH 2 O) 18 (CH 2 CH(CH 3 )O) 18 -H and these groups are randomly arranged on the siloxane in a ratio of 1:1:1. We have surprisingly found that the products made herein are readily made by a "one step" process, i.e., the hydrocarbon components are added to the siloxane polymer simultaneously, rather than in two steps as in the prior art. Moreover, only a small excess of the hydrocarbon "Q" groups need be present during the reaction, as opposed to the large excess of hydrocarbon required for reaction completion in art. Hydrosilylation catalysts are well known in the art and the following patents contain detailed descriptions regarding their preparation and use: US Patents 2,823,218; 3,419,359; 3,445,420; 3,697,473; 3,814,731; 3,890,359 and 4,123,604. Many of the catalysts known in the art require the reactants to be heated for a reaction to occur. When such catalysts are employed, this former requirement must be taken into consideration. The concentration of the catalyst employed is easily determined by routine experimentation. Typically, however, the effective amount of catalyst is in a range to provide from 1-1,000 parts per million (ppm) of platinum metal by weight in the claimed compositions of this invention. In the following examples viscosities were measured at 25°C unless otherwise stated. EXAMPLE I Preparation of PrSi(OSiMe 2 H) 3 , n-propyltris(dimethylsiloxy)silane. A mixture of PrSiCl 3 (59.92 g, 0.338 mole) and Me 2 HSiCl (95.90 g, 1.014 moles) was added drop-wise to a 3-necked round bottom flask containing ice water (166.0 g, 9.22 moles). The flask was fitted with a thermometer, a mechanical stirrer and a pressure equalizing addition funnel. The above chlorosilanes were added drop-wise through the addition funnel at a rate to maintain a temperature in the flask of slightly below 15°C. The solution was vigorously mixed throughout this addition. The solution was stirred for 30 minutes after completion of said addition. An aqueous layer was drawn off, followed by several NaHCO 3 washes and then several water washes until neutral to pH paper tests. The siloxane was dried using MgSO 4 overnight and filtered under N 2 pressure, yielding a clear, colorless liquid. The final product contained 83% of PrSi(OSiMe 2 H) 3 ; 9% of (HMe 2 SiO) 2 Si(Pr)-OSi(Pr) (OSiMe 2 H) 2 and 8% of other siloxane impurities. Product characterizations included Si-29 Nuclear Magnetic Resonance (NMR), Gas Chromatography/Mass Spectrometry (GC/MS) and Gas Chromatography/Flame Ionization Detection (GC/FID). EXAMPLE II Example I was repeated, except room temperature water was used instead of ice water and the temperature was allowed to rise to 30°C. The final product contained 79% of PrSi(OSiMe 2 H) 3 , 12% of (HMe 2 SiO) 2 Si(Pr)OSi (Pr)(OSiMe 2 H) 2 and 9% of other siloxane impurities. EXAMPLE III Example I was again repeated, except room temperature water was again used instead of ice water and the temperature was allowed to rise to 40°C. The final product contained 47% of PrSi(OSiMe 2 H) 3 , 30% of (HMe 2 SiO) 2 Si(Pr)OSi(Pr) (OSiMe 2 H) 2 and 23% of other siloxane impurities. EXAMPLE IV Preparation of PrSi[(OSiMe 2 ) 3.5 OSiMe 2 H] 3 A solution of n-propyltris(dimethylsiloxy)silane PrSi(OSiMe 2 H) 3 (18.94 g, 0.064 mole) prepared in Example I, (Me 2 SiO) 4 cyclosiloxane (49.82 g, 0.672 mole) and 41 µl of trifluoromethane sulfonic acid, was heated to 70°C. The flask was fitted with a water cooled condensing column, a magnetic stirrer and a thermometer. The flask was flushed with N 2 prior to heating, followed by N 2 positive pressure through the top of the condenser. After heating the flask at 70°C. for four hours, the solution was cooled to room temperature, followed by the addition of NaHCO 3 (1.0 g) and diatomaceous earth (Celite™) (1.0 g). The mixture was stirred for 4 hours, followed by filtration under N 2 pressure and yielded a clear, colorless liquid. The final average structure determined by Si-29 NMR was (PrSi) 1.0 [(OSiMe 2 ) 3.5 OSiMe 2 H] 3 .0. In that structure, the value "1.0" was plus or minus 0.2; the value "3.5" was plus or minus 0.5; and the value "3.0" was plus or minus 0.2. Dimethylcyclic siloxanes were also present in the product. EXAMPLE V Preparation of PrSi{(OSiMe 2 R 1 ) 1 (OSiMe 2 R 2 ) 2 }, with R 1 = (CH2) 7 CH 3 and R 2 = (CH 2 ) 3 O(CH 2 CH 2 O) 7 H. CH 2 =CHCH 2 O(CH 2 CH 2 O) 7 H (62.78 g, 0.178 mole) and a platinum catalyst (10 ppm) were placed in a 3-necked, roundbottom flask equipped with a thermometer, mechanical stirrer and a claisen adapter fit with a water cooled condenser and a pressure equalizing addition funnel. Dropwise addition of PrSi (OSiMe 2 H) 3 (27.62 g, 0.086 mole) was adjusted to maintain the temperature below 90°C. throughout the addition. The temperature was maintained at 90°C. for several hours. Dropwise addition of 1-octene (9.61 g, 0.086 mole) was followed by heating at 100°C. until no SiH was observed in the infrared spectrum. Removal of excess olefin under reduced pressure yielded a clear, liquid. Viscosity was 321 mPa·s. The following example demonstrates a one step process for the preparation of alkyl substituted siloxanes and alkyl substituted polyether fluids, rather than the two step processes previously described. EXAMPLE VI Preparation of PrSi{(OSiMe 2 ) 6 (OSiMe 2 R 1 ) 1 (OSiMe 2 R 2 ) 2 }, with R 1 = (CH2) 7 CH 3 and R 2 = (CH 2 ) 3 O(CH 2 CH 2 O) 7 H PrSi{(OSiMe 2 ) 6 (OSiMe 2 H)} 3 (65.87 g, 0.042 mole) and a platinum catalyst (10 ppm) were placed in a 3-necked round bottom flask equipped with a thermometer, mechanical stirrer and a claisen adapter fit with a water cooled condenser and a pressure equalizing addition funnel and heated to 90°C. Dropwise addition of a mixture of CH 2 =CHCH 2 O(CH 2 CH 2 O) 7 H (30.50 g, 0.083 mole) and 1-octene (6.53 g, 0.058 mole) resulted in an exotherm. The temperature was maintained at 90°C. for four hours, after which additional 1-octene (3.0 g, 0.027 mole) was added to the flask. The solution was heated until the SiH level reached 6 ppm as measured by infrared spectroscopy. Removal of excess olefin under reduced pressure yielded a clear, liquid. Brookfield™ viscosity was 240 mPa·s (cp). EXAMPLE VII Preparation of PrSi(OSiMe 2 R) 3 , with R = (CH2) 5 CH 3 1-hexene (55.18 g, 0.657 mole) and a heterogeneous platinum catalyst (50 ppm) were weighed into a 3-necked round bottom flask equipped with a thermometer, mechanical stirrer and a claisen adapter fit with a water cooled condenser and a pressure equalizing addition funnel. Dropwise addition of PrSi(OSiMe 2 H) 3 (54.01 g, 0.182 mole) was adjusted to maintain the temperature below 90°C. throughout the addition. The temperature was maintained at 90°C. until no SiH was observed in the infrared spectrum. Removal of excess olefin under reduced pressure, followed by filtration, yielded a clear liquid with solubility in both mineral oil and polydimethylsiloxane. Viscosity was 9.5 mPa·s (cp). EXAMPLE VIII Preparation of PrSi(OSiMe 2 R) 3 , with R = (CH 2 ) 30+ CH 3 C30+ alpha olefin (112.24 g, 0.217 mole) and a heterogeneous platinum catalyst (50 ppm) were weighed into a 3-necked round bottom flask equipped with a thermometer, mechanical stirrer and a water cooled condenser. PrSi(OSiMe 2 H) 3 (17.56 g, 0.055 mole) was added dropwise to the 80°C mixture. The temperature was increased and maintained at 110°C. until the SiH level was below 5 ppm. Filtration yielded the product, a waxy solid at room temperature. Melting range was 59-63°C. EXAMPLE IX Preparation of PrSi[(OSiMe 2 ) 5 OSiMe 2 R] 3 , with R = CH 2 CH(CH 3 )Ph Alpha methyl styrene (30.52 g, 0.259 mole) and platinum catalyst were weighed into a 3-necked round bottom flask equipped with a thermometer, mechanical stirrer and an addition funnel. PrSi[(OSiMe 2 ] 5 OSiMe 2 H] 3 (79.66 g, 0.057 mole) was added dropwise to the mixture at a rate to maintain an exotherm, at approximately 100°C. The addition funnel was replaced with a water cooled condenser, the temperature was increased to 110°C. and maintained for 2 hours. Removal of excess alpha methyl styrene under reduced pressure resulted in a clear liquid. The material was characterized by infrared spectroscopy. EXAMPLE X Preparation of Dodecyl-Si[(OSiMe 2 R) 3 , with R = (CH 2 ) 17 CH 3 1-octadecene (231.04 g, 0.917 mole) and platinum catalyst were weighed into a 3-necked round bottom flask equipped with a thermometer, mechanical stirrer and a water cooled condenser. DodecylSi(OSiMe 2 H) 3 (107.47 g, 0.255 mole) was added dropwise to the mixture at a rate to maintain an exotherm, approximately 110°C. The addition funnel was replaced with a water cooled condenser, the temperature was maintained at 110°C for 2 hours. Additional 1-octadecene (77.00 g, 0.0.306 mole) was added and the solution was heated at 110°C. until the SiH level was 1 ppm by infrared spectroscopy. Removal of excess octadecene under reduced pressure resulted in a golden colored liquid. The final product was a waxy solid. EXAMPLE XI Preparation of PrSi[(OSiMe 2 ) 5 (OSiMe 2 R)] 3 , with R = (CH 2 ) 17 CH 3 1-octadecene (42.35 g, 0.168 moles) and platinum catalyst were weighed into a three necked round bottom flask equipped with a thermometer, mechanical stirrer and an addition funnel. PrSi[(OSiMe 2 ) 5 (OSiMe 2 H)] 3 (64.71 g, 0.047 mole) was added dropwise to the mixture at a rate to maintain the temperature near 90°C. The addition funnel was replaced with a water cooled condenser. The temperature was maintained at 90°C. until the SiH level was below 5 ppm. Removal of excess octadecene under reduced pressure, followed by filtration yielded the product, a clear liquid. Viscosity was 36.1 mPa·s (cp). EXAMPLE XII Preparation of PrSi[(OSiMe 2 ) 100 OSiMe 2 R] 3 , with R = (CH 2 ) 7 CH 3 . 1-octene (22.93 g, 0.205 mole) and platinum catalyst were weighed into a 3-necked round bottom flask equipped with a thermometer, mechanical stirrer and an addition funnel. PrSi[(OSiMe 2 ) 100 OSiMe 2 H] 3 (982.80 g, 0.051 mole) was added dropwise to the mixture at a rate to maintain the temperature near 90°C. The addition funnel was replaced with a water cooled condenser. The temperature was maintained at 80°C. until the SiH level was below 5 ppm. Removal of excess octene under reduced pressure yielded the product, a clear liquid. Brookfield™ viscosity of the product was 710 mPa·s (cp).

Claims: Compounds selected from the group consisting of RSi(OSiMe 2 Q) 3 , (QMe 2 SiO) 2 Si(R)-O-Si(R)(OSiMe 2 Q) 2 , RSi[(OSiMe 2 ) x OSiMe 2 Q] 3 and [QMe 2 SiO(Me 2 SiO) x ] 2 Si(R)-O(R)Si[(OSiMe 2 ) x OSiMe 2 Q] 2 , wherein Me is methyl; R is a C 2 to C 18 straight-chain or branched-chain alkyl of at least two carbon atoms; x has a value of 1-200; and Q is independently the same or different alkyl, aralkyl or polyether group, with the proviso that at least one Q is an alkyl of at least two carbon atoms or aralkyl group. Compounds according to claim 1 in which R is selected from the group consisting of ethyl; n-propyl; isopropyl; butyl; 2-methylpropyl; pentyl; 2-methylbutyl; 2,2-dimethylpropyl; hexyl; 2-methylpentyl; 3-methylpentyl; 2,2-dimethylbutyl; 2,3-dimethylbutyl; heptyl; 2-methylhexyl; 3-methylhexyl; 2,2-dimethylpentyl; 2,3-dimethylpentyl; 2,4-dimethylpentyl; 3,3-dimethylpentyl; 3-ethylpentyl; 2,2,3-trimethylbutyl; octyl; nonyl; decyl; undecyl; dodecyl; tridecyl; tetradecyl; pentadecyl; hexadecyl; heptadecyl and octadecyl. Compounds according to claim 1 in which at least one Q is an alkyl group having 2 to 80 carbon atoms. Compounds according to claim 1 in which at least one or two Q groups are the same or different polyether groups having the general formula - (CH 2 ) y (OCH 2 CH 2 ) a (OCH 2 CHCH 3 ) b [OCH 2 CH(CH 2 CH 3 )] c OR' wherein R' is hydrogen atom, an alkyl radical, an aryl radical, an aralkyl radical or an acyl radical; y is 3-6; a is 0-120; b is 0-100; and c is 0-50; with the proviso that a, b and c, cannot all be zero. Compounds according to claim 1 in which R is an n-propyl or n-octyl group. Compounds according to claim 1 in which at least one Q group is an alpha methyl styryl group. A process for preparing a compound according to any of claims 1-6 by reacting in an one step hydrosilylation reaction an alkylhydridosiloxane selected from the group consisting of RSi(OSiMe 2 H) 3 , (HMe 2 SiO) 2 Si(R)-O-Si(R)(OSiMe 2 H) 2 , RSi[(OSiMe 2 ) x OSiMe 2 H] 3 and [HMe 2 SiO(Me 2 SiO) x ] 2 Si(R)-O(R)Si[(OSiMe 2 ) x OSiMe 2 H] 2 , wherein Me is methyl; R is a C 2 to C 18 straight-chain or branched-chain alkyl of at least two carbon atoms; x has a value of 1-200; with one or more different compounds having the formula CH 2 =CHR 1 wherein R 1 is independently selected at each occurrence from hydrogen, alkyl, aryl, aralkyl or a polyether group with the proviso that at least one R 1 is hydrogen, an alkyl, an aryl or an aralkyl.

Inventors: COBB VICKY SUE, LEGROW GARY EDWARD, COBB, VICKY SUE, LEGROW, GARY EDWARD
Applicants: DOW CORNING, DOW CORNING CORPORATION
Application year: 1997
Main classification: C07F7
IPC codes: C08G77, C07F7, C08L83