FLUOROCOPOLYMER, PROCESS FOR PRODUCING THE SAME, AND FLUOROELASTOMER

摘要

A novel fluorine-containing copolymer is obtained by radically copolymerizing 60 to 80 % by mole of ethylene and 20 to 40 % by mole of hexafluoropropylene in the presence of 0.1 to 15 % by mole of tetrafluoroethylene as a comonomer, each based on the monomer mixture, under pressure of 10 to 40 kgf/cm<2>. A fluoroelastomer is obtained by curing the obtained copolymer. The copolymerization is carried out under mild conditions, and the fluoroelastomer obtained by curing the resulting copolymer is excellent in amine resistance.