Patent ID: 8110640

Claim:
A catalyst composition comprising a contact product of at least one hybrid metallocene compound and at least one activator-support, 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 , 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 the at least one activator-support comprises a solid oxide treated with an electron-withdrawing anion, wherein: the solid oxide is silica, alumina, silica-alumina, aluminum phosphate, heteropolytungstates, titania, zirconia, magnesia, boria, zinc oxide, any mixed oxides thereof, or any mixture thereof; and the electron-withdrawing anion is fluoride, chloride, bromide, phosphate, triflate, bisulfate, sulfate, or any combination thereof.