Patent ID: 6818737
Filing Date: 2004-11-16
Classification: C08F,C08J

Abstract:
A process of producing a molded article from a composition comprising a syndiotactic vinyl aromatic polymer, comprising:a) molding the composition comprising a syndiotactic vinyl aromatic polymer, wherein the syndiotactic vinyl aromatic polymer has a residual vinyl aromatic monomer content of less than 0.3 parts per 100 parts syndiotactic vinyl aromatic polymer, at a temperature of from 265Â° C. to 305Â° C. to produce a molded article; b) heat treating the molded article at a temperature of 210Â° C to 230Â° C. for at least 2 minutes to thermally initiate free radical polymerization of the residual monomer such that the molded article has a residual vinyl aromatic monomer content of less than 0.05 parts per 100 parts syndiotactic vinyl aromatic polymer.