Patent ID: 7470759
Filing Date: 2008-12-30
Classification: C08F,Y10S

Abstract:
1. A method of producing a polymer comprising: contacting in a reaction zone under conditions suitable for polymerization alpha-olefin monomer with a metallocene catalyst having at least three asymmetric centers, wherein the metallocene has the formula: wherein R is H or Me; R 2 is a C 1 -C 20 alkyl group or a C 6 -C 30 aryl group and R 4 -R 11 are each a hydrogen, C 1 -C 20 alkyl group, a C 6 -C 30 aryl group, and at least one of the following conditions is realized: R 4 is different from R 11 , R 5 is different from R 10 , R 6 is different from R 9 , or R 7 is different from R 8 ; and recovering an alpha-olefin polyer from the reaction zone.