Patent ID: 7354974
Filing Date: 2008-04-08
Classification: C08J,C08K,C08L

Abstract:
1. A process for preparing a cured article, said process comprising: A. dry blending, at a temperature below 100° C., i) a perfluoroelastomer, ii) 51 to 300 parts by weight per hundred parts by weight perfluoroelastomer of a semi-crystalline copolymer comprising copolymerized units of tetrafluoroethylene and 5-12 weight percent of a perfluoro(alkyl vinyl ether), said semi-crystalline copolymer having an average particle size greater than 100 nm and a melting point, and iii) a curative to form a curable composition; B. curing said composition to form a cured article; and C. post curing said cured article at a temperature above the melting point of said semi-crystalline copolymer.