Patent ID: 8288482

Claim:
A curable composition comprising A) a fluoroelastomer comprising copolymerized units of i) a first monomer selected from the group consisting of vinylidene fluoride and tetrafluoroethylene and ii) a cure site monomer having a cure site selected from the group consisting of nitrile groups, and alkyne groups; and B) a curative having the formula N 3 (Y) p â€”(CH 2 ) n â€”Râ€”(CH 2 ) m â€”(Y) p N 3 , wherein Y is SO, SO 2 , C 6 H 4 , or CO, p is 0 or 1, n, m are independently 1 to 4, and R is selected from the group consisting of i) a C 3 -C 10 fluoroalkylene group, ii) a C 3 -C 10 fluoroalkoxylene group, iii) a substituted arylene group, iv) an oligomer comprising copolymerized units of vinylidene fluoride and perfluoro(methyl vinyl ether), v) an oligomer comprising copolymerized units of vinylidene fluoride and hexafluoropropylene, vi) an oligomer comprising copolymerized units of tetrafluoroethylene and perfluoro(methyl vinyl ether), and vii) an oligomer comprising copolymerized units of tetrafluoroethylene and a hydrocarbon olefin.