| abstract |
A catalyst composition comprising (a) a first metallocene complex represented by the general formula: n nwhere M 1 is Ti, Zr or Hf, X 1 and X 2 are each independently F, Cl, Br, I, methyl, benzyl, phenyl, H, BH 4 , a hydrocarbyloxide group having up to 20 carbon atoms, a hydrocarbylamino group having up to 20 carbon atoms, a trihydrocarbylsilyl group having up to 20 carbon atoms, OBR′ 2 wherein R′ may be an alkyl group having up to 12 carbon atoms or an aryl group having up to 12 carbon atoms, and SO 3 R″ wherein R″ may be an alkyl group having up to 12 carbon atoms or an aryl group having up to 12 carbon atoms, and Cp 1 and Cp 2 are each independently a substituted or unsubstituted cyclopentadienyl group, or a substituted or unsubstituted indenyl group, where any substituent on Cp 1 and Cp 2 is H, a hydrocarbyl group having up to 18 carbon atoms or a hydrocarbylsilyl group having up to 18 carbon atoms, (b) a second metallocene complex, (c) a non-group 4 metallocene transition-metal complex, (d) an activator or activator-support, and (e) an optional cocatalyst. |