| 摘要 |
Fluoroelastomers, curable by peroxidic route, obtainable by polymerizing the following monomers: a) C<SUB>2</SUB>-C<SUB>8 </SUB>hydrogenated fluoroolefins; b) fluorovinylethers of general formula: <?in-line-formulae description="In-line Formulae" end="lead"?>CFX-CXOCF<SUB>2</SUB>OR (I)<?in-line-formulae description="In-line Formulae" end="tail"?> c) bis-olefins having general formula: <?in-line-formulae description="In-line Formulae" end="lead"?>R<SUP>I</SUP><SUB>1</SUB>R<SUP>I</SUP><SUB>2</SUB>C-CR<SUP>I</SUP><SUB>3</SUB>-Z-CR<SUP>I</SUP><SUB>4</SUB>-CR<SUP>I</SUP><SUB>5</SUB>R<SUP>I</SUP><SUB>6</SUB> (IA)<?in-line-formulae description="In-line Formulae" end="tail"?> and optionally: d) one or more fluorinated olefinic comonomers selected from perfluoroalkylvinylethers (PAVE) CF<SUB>2</SUB>-CFOR<SUP>2</SUP><SUB>f</SUB>, perfluorooxyalkylvinylethers CF<SUB>2</SUB>-CFOX<SUP>a</SUP>, e) C<SUB>2</SUB>-C<SUB>8 </SUB>perfluorolefins; f) one or more C<SUB>2</SUB>-C<SUB>8 </SUB>non fluorinated olefinic comonomers said fluoroelastomers comprising iodine and/or bromine atoms in the chain and/or in end position.
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