Uncrosslinked copolymers containing reactive double bonds of...

Details Uncrosslinked copolymers containing reactive double bonds of... Uncrosslinked copolymers containing reactive double bonds of...

C - Chemistry, Metallurgy

08

F

C08F 214/18 (2006.01) C08F 236/20 (2006.01)

Patent

CA 2067891

UNCROSSLINKED COPOLYMER CONTAINING REACTIVE DOUBLE BONDS OF FLUORINE MONOMERS AND UNCONJUGATED DIENES AND A PROCESS FOR THEIR PRODUCTION ABSTRACT An uncrosslinked copolymer of comonomers (a), (b) and (c) and containing reactive double bonds, the comonomers based on the total mols of (a), (b) and (c) comprising (a) 45 to 99.9 mol-% of at least one ethylene containing 1 to 4 fluorine atoms, (b) 0 to 54.9 mol-% of at least one comonomer selected from the group consisting of (b1) a linear or branched C3-8 alkene containing at least one fluorine atom, (b2) an alkyl vinyl ether containing at least one fluorine atom, (b3) an open-chain or cyclic C3-6 ketone containing fluorinated .alpha.,.alpha.'-positions and LeA 28331-FC (b4) non-fluorinated C2-4 alkene, C3-6 alkyl vinyl ether or C4-6 vinyl ester, and (c) 0.1 to 5 mol-% of at least one unconjugated diene. They are produced by radical polymerization. Because of the absence of bromine and/or iodine, during subsequent peroxidic cross-linking no toxic alkyl bromide and/or iodide is released. Le A 28 331-FC

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