Patent ID: 7960488

Claim:
A composition comprising individual components of: a) aluminoxane source; b) halogen source; and c) Lewis base, wherein said aluminoxane source is combined with said Lewis base before combining with said halogen source; and wherein said halogen source is: (i) a halohydrocarbon of the formula R n CX 4−n , where n=1-3, X is fluorine, and wherein R is, independently, a hydrogen atom or a hydrocarbyl group having from one to about twenty carbon atoms; (ii) a halohydrocarbon of the formula: ArG n , wherein Ar is an aromatic hydrocarbon ring system containing up to about 25 carbon atoms, G is —CX 3 , —CX 2 R 1 , or —CX(R 1 ) 2 , X is, fluorine, R 1 is, independently, a hydrogen atom or C 1-4 alkyl group; and n is 1 to 5; (iii) a siloxane having at least one hydrocarbyl group containing from about 1 to 30 carbon atoms, wherein at least one of the hydrocarbyl groups contains at least one labile fluorine atom; (iv) a silane of the formula R′ n SiX 4−n , wherein n=1-3, X is fluorine, and wherein R′ is, independently, a hydrocarbyl group having from one to about twenty carbon atoms; (v) a tin compound of the formula R′ n SnX 4−n , wherein n=1-3, X is fluorine, and wherein R′ is, independently, a hydrocarbyl group having from one to about twenty carbon atoms; or (vi) a hydrocarbyl aluminum halide of the formula R″ m AlX 3−m , wherein m=1 or 2, where X is fluorine, and wherein R″ is, independently, a hydrocarbyl group having from one to about twenty carbon atoms.