Patent ID: 6610790
Filing Date: 2003-08-26
Classification: C08F,C08K

Abstract:
A curable composition comprisingA. a fluoroelastomer consisting essentially of (1) copolymerized units of 0.05-4 mole percent of a fluoroolefin of the formula Rfâ€”(CH2CF2)nâ€”CH&boxH;CF2, wherein Rf is a C1-C6 perfluoroalkyl group or a C1-C6 perfluoroalkoxy group and n is an integer from 1-3; and (2) copolymerized units selected from the group consisting of (i) 35-85 mole percent vinylidene fluoride, 10-60 mole percent perfluoro(vinyl ether), 0-35 mole percent tetrafluoroethylene; (ii) 30 to 70 mole percent tetrafluoroethylene, 5-25 mole percent vinylidene fluoride and 15-55 mole percent of a hydrocarbon olefin; and (iii) 10 to 40 mole percent of a hydrocarbon olefin, 2 to 60 mole percent tetrafluoroethylene and 20 to 45 mole percent of a perfluoro(vinyl ether); B. a polyhydroxy crosslinking agent; C. a cure accelerator; and D. a metal oxide or metal hydroxide.