Patent ID: 7884165

Claim:
A catalyst composition comprising a contact product of at least one hybrid metallocene compound and at least one activator, wherein the at least one hybrid metallocene compound has the formula: wherein: M is Zr, Hf, or Ti; X 1 and X 2 independently are a halide or a substituted or unsubstituted aliphatic, aromatic, or cyclic group, or a combination thereof; X 3 is a substituted or unsubstituted cyclopentadienyl, indenyl, or fluorenyl group, any substituents on X 3 independently are a hydrogen atom or a substituted or unsubstituted aliphatic, aromatic, or cyclic group, or a combination thereof; X 4 is —O—R A , —NH—R A , —PH—R A , —S—R A , or —CR B ═NR C , wherein: R A is an aryl group substituted with at least one alkenyl substituent, any substituents on R A other than the at least one alkenyl substituent independently are a hydrogen atom or a substituted or unsubstituted alkyl, alkenyl, or alkoxy group; and R B and R C independently are a hydrogen atom or a substituted or unsubstituted aliphatic, aromatic, or cyclic group, or a combination thereof.