发明授权
US5155282A Perfluoropolyethers having brominated end groups and fluoroelastomers
obtained therefrom
失效
具有溴化端基的全氟聚醚和由其获得的含氟弹性体
- 专利标题： Perfluoropolyethers having brominated end groups and fluoroelastomers obtained therefrom
- 专利标题（中）： 具有溴化端基的全氟聚醚和由其获得的含氟弹性体
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申请号： US605421申请日： 1990-10-30
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公开(公告)号： US5155282A公开(公告)日： 1992-10-13
- 发明人: Giuseppe Marchionni , Gian T. Viola , Giulio Tommasi , Raffaele Ferro , Gianna Cirillo
- 申请人： Giuseppe Marchionni , Gian T. Viola , Giulio Tommasi , Raffaele Ferro , Gianna Cirillo
- 申请人地址： ITX both of ITX both of
- 专利权人： Ausimont S.p.A.,Montedison S.p.A.
- 当前专利权人： Ausimont S.p.A.,Montedison S.p.A.
- 当前专利权人地址： ITX both of ITX both of
- 优先权： ITX19653A/85 19850226; ITX22517A/85 19851016; ITX22532A/85 19851017
- 主分类号： C08G65/00
- IPC分类号： C08G65/00 ; C08L21/00 ; C08L27/12
摘要：
New perfluoropolyethers comprising repeating units chosen from among ##STR1## statistically distributed along the chain, having a controlled molecular weight and brominated end groups, prepared starting from the product of the photochemical oxidation of C.sub.2 F.sub.4, and/or C.sub.3 F.sub.6, containing peroxidic oxygen, and subsequent treatment in liquid phase with bromine, at temperatures ranging from -40.degree. to 130.degree. C. in the presence of ultraviolet radiations, said new perfluoropolyethers derivatives being useful as additives in rubber mixes vulcanizable with peroxides, in amounts of 0.01 to 5 parts by w per 100 parts by weight of elastomer, optionally in combination with non brominated perfluoropolyethers, to improve the processability in the extrusion and the detachability of the vulcanized articles from the molding.
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