Patent ID: 6664339
Filing Date: 2003-12-16
Classification: C08F,C08K

Abstract:
A curable fluoroelastomer composition comprising:A) a specialty fluoroelastomer comprising copolymerized units of 10 to 40 mole percent ethylene; 20 to 40 mole percent perfluoro ether selected from the group consisting of perfluoro(alkyl vinyl ethers), perfluoro(alkyl alkenyl ethers) and perfluoro(alkoxy alkenyl ethers); 32-60 mole percent tetrafluoroethylene; and 0.1 to 15 mole percent of a cure site monomer selected from the group consisting of i) 3,3,3-trifluoropropene-1, ii) trifluoroethylene, iii) 1,2,3,3,3-pentafluoropropylene, iv) 1,1,3,3,3-pentafluoropropylene, and v) 2,3,3,3-tetrafluoropropene; B) 0.1 to 10 parts by weight per 100 parts fluoroelastomer of a polyhydroxy curing agent; C) 1 to 20 parts by weight per 100 parts fluoroelastomer of an acid acceptor; and D) 0.1 to 10 parts per 100 parts fluoroelastomer of a vulcanization accelerator.