申请人:Ausimont S.p.A.
公开号:US05646223A1
公开(公告)日:1997-07-08
The invention relates to new thermoprocessable copolymers of tetrafluoroethylene constituted by perfluoromethylvinylether (0.5-13% by weight), a fluorinated dioxole (0.05-3%) and tetrafluoroethylene (difference to 100%), particularly useful for coating electric cables by melt extrusion. It relates also to new perfluorodioxoles of formula ##STR1## wherein R.sub.F is a C.sub.1 -C.sub.5 perfluoroalkyl radical; X.sub.1 and X.sub.2 are, independently from each other, F or CF.sub.3 ; and their homopolymers and copolymers, in particular thermoprocessable copolymers as defined above.
本发明涉及新的热处理可塑性共聚物,由四氟乙烯构成,其中含有全氟甲基乙烯醚(重量占0.5-13%)、氟代二噁烷(0.05-3%)和四氟乙烯(占100%的差异),特别适用于通过熔融挤出对电缆进行涂覆。本发明还涉及新的全氟二噁烷,其化学式为 ##STR1## 其中 R.sub.F 是C.sub.1-C.sub.5全氟烷基基团;X.sub.1 和X.sub.2 独立于彼此,分别为F或CF.sub.3;以及它们的均聚物和共聚物,特别是如上定义的热处理可塑性共聚物。