Patent ID: 7659347

Claim:
A fluorine-containing elastomer composition comprising (A) at least one compound selected from the group consisting of; a compound containing at least two crosslinking reaction groups represented by the general formula (1): (wherein R 1 is the same or different, —NH 2 , —NHR 2 , —OH or —SH, and R 2 is a fluorine atom or a monovalent organic group); a compound represented by the general formula (2): (wherein R 3 is —SO 2 —, —O—, —CO—, an alkylene group having 1 to 6 carbon atoms, a perfluoroalkylene group having 1 to 10 carbon atoms, or a single bond, and R 4 is a compound represented by the general formula (3): (wherein R f 1 is a perfluoroalkylene group having 1 to 10 carbon atoms); and a compound represented by the general formula (4): (wherein n is an integer of 1 to 10), and (B) a fluorine-containing elastomer capable of a crosslinking reaction with the compound (A), said fluorine-containing elastomer (B) is one selected from the group consisting of a copolymer of 50 to 80% by mol of vinylidene fluoride and 50 to 20% by mol of hexafluoropropylene, a copolymer of 30 to 80% by mol of vinylidene fluoride, 35 to 20% by mol of hexafluoropropylene and 35 to 0% by mol of tetrafluoroethylene and a copolymer of 40 to 80% by mol of vinylidene fluoride, 3 to 40% by mol of tetrafluoroethylene and 15 to 35% by mol of perfluoro(alkyl vinyl ether), said fluorine-containing elastomer (B) has a monomer which gives a crosslinking site capable of a crosslinking reaction with the compound (A) in an amount of 0.3 to 2.0 % by mol.