Patent ID: 7517940

Claim:
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 1 s and R 2 s are each independently a hydrogen atom; a C1-20 alkyl, C6-20 aryl or C3-20 silyl radical; a C2-20 alkenyl, C7-20 alkylaryl, or C7-20 arylalkyl radical; or a metalloid radical of Group 14 substituted with a hydrocarbyl, wherein R 1 and R 2 can be connected to each other by an alkylidine radical containing a C1-20 alkyl or aryl radical to form a ring; R 3 s are each independently a C1-20 alkyl, C6-20 aryl, or C3-20 silyl radical; a C2-20 alkenyl, C7-20 alkylaryl, or C7-20 arylalkyl radical; or a metalloid radical of Group 14 substituted with a C1-60 hydrocarbyl; R 4 s are each independently a hydrogen atom; a halogen radical; or a C 1-20 alkyl or C6-20 aryl radical, wherein two R 4 s can be connected to each other; 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 1 s and Q 2 s are each independently a halogen radical; a C1-20 alkyl, or C6-20 arylamido radical; a C1-20 alkyl, C2-20 alkenyl, C6-20 aryl, C7-20 alkylaryl, or C7-20 arylalkyl radical; or a C1-20 alkylidene radical; Al(R 6 ) 3 Formula 2 where, R 6 is a C1-20 hydrocarbyl radical; C1-20 hydrocarbyl radical substituted with a halogen atom; and [L-H] + [Z(A) 4 ] − Formula 3 where, L is a neutral Lewis base; [L-H] + is a Bronsted acid; Z is B or Al; and A is a C6-20 aryl or C1-20 alkyl radical in which at least one hydrogen atom is substituted with a halogen atom, a C1-20 hydrocarbyl, C1-20 alkoxy or phenoxy radical.