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    • 104. 发明授权
    • Perfluorovinyl compounds
    • 全氟乙烯基化合物
    • US5162468A
    • 1992-11-10
    • US668296
    • 1991-03-12
    • David A. BabbKatherine S. ClementBobby R. Ezzell
    • David A. BabbKatherine S. ClementBobby R. Ezzell
    • C07C22/08C07C43/17C07C43/225C07C65/21C07C69/92
    • C07C43/17C07C22/08C07C43/225C07C65/21C07C69/92C07C2103/18
    • Compounds have a structure represented by Formula I:CF.sub.2 .dbd.CF--X--R--(X--CF.dbd.CF.sub.2).sub.mwherein R represents an unsubstituted or inertly substituted hydrocarbyl group; each X is independently selected from the group consisting of groups having at least one non-carbon atom between R and --CF.dbd.CF.sub.2 ; and m is an integer of from 1 to about 3. Polymers formed from such compounds are also prepared. The compounds are preferably prepared by a method by a process comprising the steps of:(a) forming a salt having anion corresponding to a compound of Formula II:HX--R--(XH.sub.m); wherein X, R and m are as defined for Formula I:(b) reacting the salt with a 1,2-dihalo-1,1,2,2-tetrafluoroethane wherein the halo groups are iodine, bromine, chlorine or mixtures thereof, at least one halo group being bromine or iodine, to form a compound of Formula III:Z--CF.sub.2 CF.sub.2 --X--R--(X--CF.sub.2 CF.sub.2 --Z).sub.m wherein X, R and m are as defined for Formula I and each Z is independently iodine or bromine;(c) eliminating the halogen atoms represented by Z to form the perfluorovinyl compound represented by Formula I.
    • 化合物具有由式I表示的结构:CF 2 = CF-X-R-(X-CF = CF 2)m其中R表示未取代或惰性取代的烃基; 每个X独立地选自具有至少一个R和-CF = CF 2之间的非碳原子的基团; 并且m为1至约3的整数。还制备由这些化合物形成的聚合物。 化合物优选通过包括以下步骤的方法的方法制备:(a)形成具有对应于式II化合物的阴离子的盐:HX-R-(XHm); 其中X,R和m如式I所定义:(b)盐与1,2-二卤代-1,1,2,2-四氟乙烷反应,其中卤素是碘,溴,氯或其混合物, 至少一个卤素基团是溴或碘,以形成式III的化合物:Z-CF 2 CF 2 -XR-(X-CF 2 CF 2 -Z)m其中X,R和m如式I所定义,各Z独立地为碘 或溴; (c)除去由Z表示的卤素原子,形成由式I表示的全氟乙烯基化合物。