Patent ID: 8691715

Claim:
A catalyst composition comprising catalyst component I, catalyst component II, and at least one activator-support comprising a solid oxide treated with an electron-withdrawing anion, wherein: catalyst component I comprises at least one ansa-metallocene compound having formula (I): wherein: M A is Ti, Zr, or Hf; X 1A and X 2A are independently F; Cl; Br; I; methyl; benzyl; phenyl; H; BH 4 ; OBR 2 or SO 3 R, wherein R is an alkyl or aryl group having up to 18 carbon atoms; or a hydrocarbyloxide group, a hydrocarbylamino group, or a hydrocarbylsilyl group, any of which having up to 18 carbon atoms; E A is C or Si; R 1A and R 2A are independently H, a hydrocarbyl group having up to 18 carbon atoms, or R 1A and R 2A are connected to a form a cyclic or heterocyclic group having up to 18 carbon atoms, wherein R 1A and R 2A are not aryl groups; R 6A and R 7A are independently H or a hydrocarbyl group having up to 18 carbon atoms; and Cp A is a cyclopentadienyl, indenyl, or fluorenyl group, or a heteroatom-substituted derivative thereof, any substituent on Cp A is independently H or a hydrocarbyl or hydrocarbylsilyl group having up to 36 carbon atoms; and catalyst component II comprises at least one ansa-metallocene compound having formula (II): wherein: M B is Ti, Zr, or Hf; X 1B and X 2B are independently F; Cl; Br; I; methyl; benzyl; phenyl; H; BH 4 ; OBR 2 or SO 3 R, wherein R is an alkyl or aryl group having up to 18 carbon atoms; or a hydrocarbyloxide group, a hydrocarbylamino group, or a hydrocarbylsilyl group, any of which having up to 18 carbon atoms; E B is C or Si; R 1B and R 2B are independently H or a hydrocarbyl group having up to 18 carbon atoms, wherein at least one of R 1B and R 2B is an aryl group having up to 18 carbon atoms; R 6B and R 7B are independently H or a hydrocarbyl group having up to 18 carbon atoms; and Cp B is a cyclopentadienyl, indenyl, or fluorenyl group, or a heteroatom-substituted derivative thereof, any substituent on Cp B is independently H or a hydrocarbyl or hydrocarbylsilyl group having up to 36 carbon atoms.