The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 2004
Filed:
Feb. 23, 2004
Roel Vossen, Hulst, NL;
Rudi Veraart, Aardenburg, NL;
Peter Jackson, Hulst, NL;
Juergen Schellenberg, Halle, DE;
Clement Hiel, Rancho Palos Verdes, CA (US);
Other;
Abstract
The present invention relates to a process of producing a molded article from a composition comprising a syndiotactic vinyl aromatic polymer, wherein the molded article has a residual vinyl aromatic monomer content of less than 0.05 per 100 parts syndiotactic vinyl aromatic polymer comprising molding a composition of a syndiotactic vinyl aromatic polymer having a residual vinyl aromatic monomer content of less than 0.3 parts per 100 parts syndiotactic vinyl aromatic polymer, at a temperature of from 265° C. to 305° C. to produce a molded article; and heat treating the molded article at a temperature of 210° C. to 230° C. for at least 2 minutes to thermally initiate free radical polymerization of the residual monomer.