Patent ID: 6790915
Filing Date: 2004-09-14
Classification: C08J

Abstract:
A process for preparing a fluorine-containing elastomeric copolymer composition comprising a fluorine-containing elastomeric copolymer, a vulcanizing agent and a vulcanization accelerator,said process comprising the step of coagulating the copolymer from an aqueous dispersion of the fluorine-containing elastomeric copolymer and drying the resulting coagulate of the copolymer while kneading, wherein a mixture of mutually soluble components consisting of the vulcanizing agent and the vulcanization accelerator is added to the coagulate, the mixture of mutually soluble components is a solid solution or a melt, dehydration in which water is squeezed out from the coagulate is conducted in an extruder, and the step of drying the coagulate while kneading is conducted in the extruder.