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2. 发明公开

EP0974604A2 Pseudo-living radical polymerization of vinyl halide chain transfer agent and method of making agent 失效
标题翻译：假活性的乙烯基卤化物的链转移剂的自由基聚合和它的制造方法
公开(公告)号：EP0974604A2
公开(公告)日：2000-01-26
申请号：EP99121733.2
申请日：1994-03-17
申请人： The Geon Company
发明人： Bak, Philip I. , Bidinger, Gregory P. , Gozens, Ross J. , Klich, Paul R. , Mayer, Lance A.
IPC分类号： C08F14/06 , C08F14/18 , C07C17/00
CPC分类号： C08F14/06 , C07C17/087 , C08F14/18 , C08F2438/01 , Y02P20/52 , C07C19/07 , C08F2/38
摘要： The present invention to a method of synthesizing poly(vinyl halide) by means of a free radical polymerization which mimics a "living" radical polymerization in the presence of an iodine containing chain transfer agent containing at least one iodine atom bonded to a primary carbon atom and having the formula:

R-CH 2 I (I)

R-CHX I (II),

R-CH(X)-CH 2 I (III),

R-CH(X)-CHX I (IV), or

R-CH(X)-CH 2 -CHX I (V),

wherein X is fluorine, chlorine, bromine, or iodine, R is hydrogen, C 1 , C 2 , C 3 , C 4 , C 5 alkyl, any of which are linear or branched, cyanoalkyl, cyclohexyl, methyl cyclohexyl, phenyl, benzyl, and halogenated or oxygenated derivatives thereof.
In accordance with the invention there is further provided a method of synthesizing 1-halo-1-iodoethane by reacting hydrogen iodide with vinyl chloride or vinyl fluoride in the presence of an iodine generating catalyst under certain specified conditions. The resulting product of the reaction is a high yield, high purity 1-chloro-1-iodoethane or 1-fluoro-1-iodoethane. The poly(vinyl halide) resin is obtainable under conventional temperatures of polymerization and the chain transfer agents included herein perform consistently over repeated runs, hence useful for commercial manufacturing. The resin obtained has reduced molecular weight and polydispersity, good thermal stability, and enhanced mechanical properties, compared to poly(vinyl halide) conventionally formed by free radical methods at higher temperatures and/or with the use of conventional chain transfer agents for vinyl halide polymer.
摘要翻译：本发明的合成的聚（卤乙烯）的方法通过自由基聚合哪些在碘包含含有键合到伯碳原子上至少一个碘原子的链转移剂的存在下模仿“活性”自由基聚合的方式和具有下式：R-CH 2我R-CHX我R-CH（X）-CH 2 I R-CH（X）-CHX我R-CH（X）-CH 2 -CHX我worin X是氟，氯，溴或碘，R是氢，C1，C2，C3，C4，C5烷基，其中任何一个是直链或支链的，氰基烷基，环己基，环己基甲基，苯基，苄基，和卤化或氧化的衍生物。在雅舞的发明，提供了通过使碘化氢与碘生成催化剂的某些规定的条件下存在的氯乙烯或氟乙烯合成此外1-卤代-1-碘乙烷的方法。反应所得到的产物是一种高收率，高纯度的1-氯-1-碘乙烷或1-氟-1-碘乙烷。聚（卤乙烯）树脂是下聚合的常规温度和链转移剂可获得的包含在以上重复运行，对于商业化生产。因此有用表现一致。获得的树脂具有降低的分子量和多分散性，良好的热稳定性，和增强的机械性能，相对于聚（卤代乙烯）在较高的温度和/或与使用常规的链转移剂的乙烯基卤化物聚合物通过自由基方法常规形成，

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