Patent ID: 6462153
Filing Date: 2002-10-08
Classification: C08F

Abstract:
A method of polymerizing vinyl chloride monomer comprising contacting said monomer under polymerizing conditions with a supported catalyst which comprises(A) an insoluble particulate support; and (B) a catalyst deposited on said support which comprises a mixture of a vanadyl (V) catalyst made by reacting vanadium trichloride oxide with a compound containing an oxirane ring, said catalyst having the formula â€ƒand about 0.5 to about 15 moles of an alkyl aluminum cocatalyst having the formula (Râ€²)mAl(Xâ€²)3âˆ’m per mole of said catalyst, where R is a group containing 1 to 14 carbon atoms, each X is independently selected from halogen or OR, each Râ€² is independently selected from alkyl from C1 to C10, each Xâ€² is independently selected from halogen, R1 is alkyl from C1 to C10, haloalkyl from C1 to C10, alkoxyalkyl where each alkyl group is independently selected from C1 to C10, or aryl from C6 to C14, m is 1 or 2, and n is 1 to 100.