| abstract |
Perfluoroelastomers, curable by peroxidic route, obtainable by polymerizing the following monomers:a) tetrafluoroethylene (TFE);b) fluorovinylethers of general formula:c) bis-olefins having general formula:d) optionally, one or more fluorinated olefinic comonomers selected from C2-C8 perfluoroolefins, perfluoroalkylvinylethers (PAVE) CF2=CFOR<2>f, perfluoro-oxyalkylvinylethers CF2=CFOX<a>,said perfluoroelastomers comprising iodine and/or bromine atoms in the chain and/or in end position, said halogen atoms deriving from "cure site" comonomers and/or from chain transfer agents used in polymerization. |