Patent ID: 7622414

Claim:
A catalyst composition comprising a contact product of an organometal compound, an organoaluminum compound, and a treated solid oxide compound comprising boron, fluorine, and silica, the catalyst composition being substantially free of aluminoxane compounds and compounds selected from among N,N-dimethylanilinium tetrakis(pentafluorophenyl)borate, triphenylcarbenium tetrakis(pentafluorophenyl)borate, lithium tetrakis(pentafluorophenyl)borate, tris(pentafluorophenyl)boron, N,N-dimethylanilinium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate, and triphenylcarbenium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate.