Patent ID: 7355058

Claim:
A process which comprises mixing, in an inert, anhydrous environment, (a) at least one aluminoxane and (b) at least one halogenation agent which is (i) at least one halohydrocarbon of the formula R n CX 4-n , where n=1-3, X is, independently, fluorine, chlorine or bromine, and where R is, independently, a hydrogen atom or a hydrocarbyl group having from one to about twenty carbon atoms; or (ii) at least one siloxane having at least one labile halogen atom in the molecule, wherein each halogen atom is, independently, fluorine, chlorine, or bromine; or (iii) at least one silane of the formula Râ€² n SiX 4-n , where n=1-3, X is, independently, fluorine, chlorine or bromine, and where Râ€² is, independently, a hydrocarbyl group having from one to about twenty carbon atoms; or (iv) at least one tin compound of the formula Râ€² n SnX 4-n , where n=1-3, X is, independently, fluorine, chlorine or bromine, and where Râ€² is, independently, a hydrocarbyl group having from one to about twenty carbon atoms; or (v) at least one hydrocarbyl aluminum halide of the formula Râ€³ m AlX 3-m , where m=1 or 2, where X is, independently, fluorine, chlorine or bromine, and where Râ€³ is, independently, a hydrocarbyl group having from one to about twenty carbon atoms; or (vi) mixtures of any two or more of (i)-(v); wherein the amount of halogen atoms is in the range of about 0.5 mole % to about 15 mole % relative to aluminum atoms, such that a haloaluminoxane composition is formed.