Catalyst composition including transition metal complexes and olefin polymerization using the same

A method of preparing a catalyst composition, the method comprising:

• contacting a transition metal complex precatalyst represented by Formula 1 with a first cocatalyst represented by Formula 2 to prepare a mixture;
• and
• contacting the mixture of the precatalyst and the first cocatalyst with a second cocatalyst represented by Formula 3:
• where, R1s and R2s 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 C1-60 hydrocarbyl, wherein R1 and R2 can be connected to each other by an alkylidine radical containing a C1-20 alkyl or C6-20 aryl radical to form a ring;
• each of the R3s 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;
• each of the R4s are each independently a hydrogen atom;
• a halogen radical;
• or a C1-20 alkyl or C6-20 aryl radical, wherein two R4s can be connected to each other;
• E is a covalent bridging group connecting the two phenylene rings such as an epoxy group;
• 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 which is a Group 4 transition metal;
• and
• Q1s and Q2s are each independently a halogen radical;
• a C1-20 alkyl, or 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(R6)3 Formula 2
• where, R6 is a C1-20 hydrocarbyl radical;
• C1-20 hydrocarbyl radical substituted with a halogen atom;
• and
• [L-H]+[Z(A)4]31 Formula 3
• where, L is a neutral Lewis base;
• [L-H]+ is a Bronsted acid;
• Z is B3+ or Al3+;
• 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.