Patent ID: 7517940
Filing Date: 2009-04-14
Classification: C08F,Y10S

Abstract:
1. A catalyst composition comprising: a transition metal complex precatalyst represented by Formula 1; a first cocatalyst represented by Formula 2 which is an alkylaluminum compound; and a second cocatalyst represented by Formula 3 which is a salt compound comprising a Bronsted acid cation and a noncoordinating, compatible anion; where, R R R E is a covalent bridging group connecting the two phenylene rings that is selected from the group consisting of —O-; an epithio group; a carbonyl group; a silane group; a disilane group; a substituted or unsubstituted C1-60 hydrocarbylene group; and a substituted or unsubstituted C1-60 heterohydrocarbylene group including Group 4B,5B or 6B atom; M is Ti, Zr or Hf; and Q where, R where, L is a neutral Lewis base; [L-H]