Fluoroelastomer and its cross-linkable composition
AssigneeNippon Mektron, Ltd.
InventorsTakashi Enokida, Hajime Akimoto, Haruyoshi Tatsu
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Abstract
A fluoroelastomer comprising 2 to 8% by mole of tetrafluoroethylene, 14 to 25% by mole of perfluoro(alkyl vinyl ether) and 70 to 85% by mole of vinylidene fluoride, sum total being 100% by mole, obtained by copolymerization in the presence of a bromine-containing monomer compound and an iodine and bromine-containing compound, has distinguished low temperature characteristics, solvent resistance and chemical resistance by itself.
Claims14
A fluoroelastomer which comprises 2 to 8% by mole of tetrafluorethylene, 14 to 25% by mole of perfluoro(alkyl vinyl ether) having an alkyl group having 1 to 3 carbon atoms and 70 to 85% by mole of vinylidene fluoride, sum total being 100% by mole.
A cross-linkable composition, which comprises a fluoroelastomer comprising 2 to 8% by mole of tetrafluoroethylene, 14 to 25% by mole of perfluoro(alkyl vinyl ether) having an alkyl group having 1 to 3 carbon atoms and 70 to 85% by mole of vinylidene fluoride, sum total being 100% by mole, and a peroxide cross-linking agent.
A cross-linkable composition, which comprises a fluoroelastomer comprising 2 to 8% by mole of tetrafluoroethylene, 14 to 25% by mole of perfluoro(alkyl vinyl ether) having an alkyl group having 1 to 3 carbon atoms and 70 to 85% by mole of vinylidene fluoride, sum total being 100% by mole, obtained by copolymerization in the presence of a bromine-containing monomer compound and an iodine and bromine-containing compound, and a peroxide cross-linking agent.
Dependencies are inferred from the claim text.