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    • 2. 发明申请
    • SYNTHESIS OF CHLOROTRIFLUOROETHYLENE-BASED BLOCK COPOLYMERS BY IODINE TRANSFER POLYMERIZATION
    • 通过碘转移聚合合成基于氯代三氟乙烯的嵌段共聚物
    • WO2015047749A1
    • 2015-04-02
    • PCT/US2014/055385
    • 2014-09-12
    • HONEYWELL INTERNATIONAL INC.
    • THENAPPAN, AlagappanAMADURI, BrunoLOPEZ, Gerald
    • C08F297/00C08F214/00C08F2/00
    • C08F214/242C08F2/38C08F214/24C08F293/005C08F2438/00
    • Methods for the synthesis of CTFE-based block copolymers through iodine transfer polymerization are disclosed. In an exemplary embodiment, a method includes reacting a fluoromonomer "M" with a chain transfer agent of the formula X-Y or Y-X-Y, wherein X represents a C 1 -C 3 hydrocarbon, a C 1 -C 6 hydrofluorocarbon, C 1 -C 6 hydrochlorofluorocarbon, or C 1 -C 6 fluorocarbon and Y represents iodine or bromine, in the presence of a radical initiator, to form a macro-initiator of the formula: X-poly(M)-Y or Y-poly(M)-X-poly(M)-Y, wherein poly(M) represents a polymer of the fluoromonomer. The method further includes reacting the macro-initiator with chlorotrifluoroethylene (CTFE) in the presence of a radical initiator to form a diblock or a triblock CTFE-based block copolymer of the formula: X-poly(M)- block -poly(CTFE) or PCTFE- block -poly(M)-X-poly(M)- block -PCTFE.
    • 公开了通过碘转移聚合合成CTFE基嵌段共聚物的方法。 在一个示例性实施方案中,一种方法包括使含氟单体“M”与式XY或YXY的链转移剂反应,其中X表示C1-C3烃,C1-C6氢氟烃,C1-C6氢氯氟碳或C1-C6 碳氟化合物,Y代表碘或溴,在自由基引发剂存在下形成下式的大分子引发剂:X-聚(M)-Y或Y-聚(M)-X-聚(M)-Y ,其中聚(M)表示所述含氟单体的聚合物。 该方法还包括在自由基引发剂的存在下使大分子引发剂与氯三氟乙烯(CTFE)反应以形成下式的二嵌段或三嵌段CTFE基嵌段共聚物:X-聚(M) - 嵌段 - 聚(CTFE) 或PCTFE-嵌段 - 聚(M)-X-聚(M) - 嵌段-PCFEFE。