# Patent

## Title
Urethane linked hydroxy aromatic isocyanates

## Abstract

The polymerization of Examples 21-33 were repeated by using catalysts according to comparative Examples 56 and 57. The difference between a typical catalyst component according to prior art and the catalyst component according to the invention can clearly be seen from Tables 9 and 10. With the catalyst component according to the invention the block:random ratio was 0.9:1 when with known catalysts the ratio was 7.5:1, as can be seen from Table 10. __________________________________________________________________________ COMPARATIVE TWO PHASE POLYMERIZATIONS Phase I           Phase II Test Catal. Ti-cat Isobut. prop. temp. time flash h.sub.2 isobut. 1-but H.sub.2 temp. Yield Act.   I.I. run Examp. mmol g   g   .degree.C. min min bar g   g  bar .degree.C. g   kg PB/g. %at __________________________________________________________________________ a   56   0.076 700 20  40  20 5  2.5 300 200 0.5 20-40 172 1.1    89 b   56   0.076 "   40  "   30 5  "   1300 300 "  30  110 0.7    92 c   56   0.064 "   20  "   "  5  "   600 "  "  25-45 320 2.3    75 d   56   0.050 "   30  "   "  5  5.0 "   "  0.2 30 e   57    0.0738 1500 25  "   60 5  1       500 0.1 20  557 5.5    95.4 f   57    0.0753 "   50  50  "  5  "       "  "  "   420 4.1    91.5 g   57   0.075 1280 100 "   "  5  "       "  "  "   543 5.5    90.7 h   57   0.076 0.076 1500 50  "  5  "       "  "  "   389 3.7    94.8 __________________________________________________________________________ ______________________________________ DISTRIBUTION OF BLOCK TO RANDOM (mol % ratio) COPOLYMERS ______________________________________ Example Catalyst  mol %     wt %    block:random No.    No.       PP,total  PP,total mol % ______________________________________ 21     C         14        11      9:5 32     H         13        10      6:7 23     F          8         6      3:5 24     F         18        14       7:11 25     F         13        10      6:7 26     F         13        10      7:6 27     F          8         6      3:5 0.9:1 ______________________________________ Comparative Test   Catalyst  mol %     wt %    block:random Run    Example   PP,total  PP,total mol % ______________________________________ a      56        23        18      19:4 b      56        20        16      20:0 c      56        18        14      15:3 d      56        12         9      9:3 e      57         7         5      7:0 f      57        24        19      21:3 g      57        23        18      19:4 h      57        42        35      39:3 7.5:1 ______________________________________

## Background
## Claims

1. Process for homopolymerization and copolymerization of olefins which comprises contacting said olefins with a catalyst comprising wherein R is an alkyl radical and X is between 1 and 3, organometallic aluminum compound (a), organic magnesium compound of the formula MgR'R" wherein R' and R" are the same or different and each is an alkyl group of 1 to 20 carbon atoms, with at least one chlorinating agent which is chlorine gas or a mixture of chlorine gas and alkyl chloride to form a carrier, contacting the carrier thus obtained first with liquid titanium tetrachloride, then with an electron donor selected from the group consisting of inorganic and organic esters, amines, ethers, alcoholates, silane compound, ketones, and phosphor amides at -25.degree. to 180.degree. C. and after that at least once with titanium tetrachloride in the absence of said electron donor compound, and recovering said solid non-layer catalyst component.

2. Process for homopolymerization and copolymerization of olefins which comprises contacting said olefins with a catalyst according to claim 1 in which said organometallic aluminum compound is triethylaluminum.

3. Process as claimed in claim 2 in which said carrier is contacted with a silicone oil and an aliphatic or aromatic alcohol before contacting with titanium tetrachloride.

4. Process as claimed in claim 1 in which 1-butene is copolymerized with propylene in a medium comprising propane or isobutane and in a first phase in which a small quantity of propylene is first polymerized and in a second phase in which 1-butene is introduced and the polymerization is continued.

5. Process as claimed in claim 4 in which said carrier is contacted with a silicone oil and an aliphatic or aromatic alcohol before contacting with titanium tetrachloride.

6. Process for homopolymerization and copolymerization of olefins which comprises contacting said oelfins with a catalyst comprising wherein R is an alkyl radical and X is between 1 and 3, organometallic aluminum compound (a), organic magnesium compound of the formula MgR'R" wherein R' and R" are the same or different and each is an alkyl group of 1 to 20 carbon atoms with at least one chlorinating agent which is chlorine gas or a mixture of chlorine gas and alkyl chloride to form a carrier, contacting the carrier thus obtained first with liquid titanium tetrachloride at a temperature below 0.degree. C., then with an electron donor selected from the group consisting of inorganic and organic esters, amines, ether, alcoholates, silane compound, ketones, and phosphor amides at -25.degree. to 180.degree. C. and after that at least once with titanium tetrachloride in the absence of said electron donor compound, and recovering said solid non-layer catalyst component.

7. A process according to claim 1 in which said carrier is contacted with a silicone oil and an aliphatic or aromatic alcohol before contacting with titanium tetrachloride.