Copolymerizable fluorinated compounds, a process for their preparation
and thermoplastic fluoropolymers obtainable therefrom
    3.
    发明授权
    Copolymerizable fluorinated compounds, a process for their preparation and thermoplastic fluoropolymers obtainable therefrom 失效
    可共聚氟化化合物,其制备方法和可从其获得的热塑性含氟聚合物

    公开(公告)号:US5399645A

    公开(公告)日:1995-03-21

    申请号:US246525

    申请日:1994-05-20

    摘要: A 2-allyl-perfluoroalkyl-trifluorovinyl ether of the formula ##STR1## wherein R.sup.1.sub.F and R.sup.2.sub.F represent either --CF.sub.3 or, together, (CF.sub.2).sub.n where n=2 or 3,is produced bya) reacting hexafluoropropene oxide with a 2-allyl-substituted perfluorocycloketone or perfluoroketone,b) subjecting the resulting 2-(allylperfluorocycloalkoxy)- or 2-(allylperfluyoro-alkoxy)-perfluoropropanoic acid fluoride to alkaline saponification thereby to form the corresponding sodium salt,c) and decarboxylating the sodium salt at about 150.degree.-350.degree. C.Polymers thereof produce amorphous, transparent coatings or molded items with glass transition temperatures between 60.degree. and 150.degree. C. and have good solubility characteristics in a number of organic solvents.

    摘要翻译: 式(Ⅰ)的2-烯丙基 - 全氟烷基 - 三氟乙烯基醚,其中R1F和R2F代表-CF3或共同(= CF2)n,其中n = 2或3,通过以下方法制备:a)使六氟丙烯氧化物与 2-烯丙基取代的全氟环丙酮或全氟酮,b)将所得的2-(烯丙基全氟环烷氧基)或2-(烯丙基全氟烷氧基) - 全氟丙酸​​氟化物进行碱性皂化从而形成相应的钠盐,c)和使钠脱羧 盐在约150°-350℃下进行。其聚合物产生玻璃化转变温度在60℃至150℃之间的无定形的透明涂层或模制品,并且在许多有机溶剂中具有良好的溶解性。