| 摘要 |
Fluoroelastomers comprising in the polymer chain units deriving from fluorovinyl ethers having the formula: <paragraph lvl="0"><in-line-formula>CFX=CXOCF2OR (I) </in-line-formula>wherein R is a C2-C6 linear, branched or C5-C6 cyclic (per) fluoroalkyl group, or a C2-C6 linear, branched (per) fluorooxyalkyl group containing from one to three oxygen atoms; when R is fluoroalkyl or fluorooxyalkyl group as above defined, it can contain from 1 to 2 atoms, equal or different, selected from the following: H, Cl, Br, I; X=F, H.
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