Patent ID: 6627711
Filing Date: 2003-09-30
Classification: C08F

Abstract:
A process for polymerization of one or more addition polymerizable monomers comprising contacting said monomer or monomers under addition polymerization conditions with a catalyst composition comprising the reaction product or admixture resulting upon combination of:(A) a metal complex corresponding to the formula: â€ƒwhere, Y is a divalent bridging group; R1 each occurrence is independently selected from alkyl, aryl, hydrogen, aryloxy, arylthio, alkyloxy, or alkylthio, having up to 10 atoms not counting hydrogen; R2 independently each occurrence is an aryl group of up to 10 atoms not counting hydrogen; X is phosphorus, sulfur, nitrogen, or oxygen; râ€² is 1 or 2 to satisfy the valence of X; M is a group 4 metal in the +4 oxidation state or a group 5 metal in the +5 oxidation state; R is a monovalent ligand group or 2 R groups together are a divalent ligand group; and r is 3 or 4 depending on the valence of M; and (B) an activating cocatalyst, wherein the molar ratio of (A) to (B) is from 1:10,000 to 100:1, and recovering the resulting polymeric product.