Patent ID: 7744794
Filing Date: 2010-06-29
Classification: B29C,D01F

Abstract:
1. A process comprising extruding a composition comprising tetrafluoroethylene/hexafluoropropylene copolymer, about 10-60 wt % inorganic particulate filler, and an effective amount of hydrocarbon polymer to disperse said particulate filler in said copolymer either during melt blending prior to said extruding of said composition or during said extruding, the amount of said copolymer, filler and polymer totaling 100 wt %, wherein said extruding is carried out at a melt temperature ranging from about 520° F. (271° C.) to 650° F. (343° C.), said effective amount of hydrocarbon polymer being about 0.5 to 3 wt %, wherein said copolymer and said hydrocarbon polymer are incompatible to one another and said hydrocarbon polymer is an aromatic-containing thermoplastic elastomer.