Ethene, tetrafluoro-, polymer with trifluoro(trifluoromethoxy)ethene tetrafluoro-ethen polymer with trifluoro(trifluoromethoxy)ethene Tetrafluoroethene polymer with trifluoro(trifluoro methoxy)ethene Tetrafluoroethylene-trifluoromethyl trifluorovinyl ether copolymer Poly(tetrafluoroethene-co-perfluoro(methylvinyl) ether) Poly(tetrafluoroethene-co-trifluoro(trifluoromethoxy)ethene) Poly(tetrafluoroethylene-co-trifluoromethyl trifluorovinyl ether) Poly(tetrafluoroethylene-co-trifluorovinyltrifluoromethyl ether)