| 摘要 |
Copolymers are made by copolymerising perfluoro(3-phenoxypropylvinylether) (I) with 2-10C fluorine-contg.alkylenically unsatd. monomers.Suitable comonomers are vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, tetrafluoroethylene and 3-10C perfluoralkylperfluorovinyl ethers. Preferred copolymer is of (I), perfluoromethylperfluorovinyl ether and tetrafluoroethylene in a mol.ratio 0.2-3.0:30-40:70-60.Products are vulcanisable copolymers with excellent resistance to high temp. oxidation and ageing
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