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    • 8. 发明授权
    • Process for the manufacture of halogenated polymers
    • 制备卤化聚合物的方法
    • US4513116A
    • 1985-04-23
    • US481366
    • 1983-04-01
    • Ronald C. KowalskiWilliam M. DavisNeil F. NewmanLewis Erwin
    • Ronald C. KowalskiWilliam M. DavisNeil F. NewmanLewis Erwin
    • C08F8/00C08C19/12C08F8/20C08F8/22
    • C08C19/12C08F8/20
    • Continuous halogenation of polymers is achieved by contacting polymer and halogenating agent in a continuous flow device in which the reactants are present as either co-continuous phases or wherein the halogenating agent is present as a continuous phase and the polymer is present as a discontinuous phase, the polymer is subjected to deformation during reaction and in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture. In a preferred embodiment the polymer passes through three extruder-reactor zones under controlled conditions to achieve halogenation: feed, reaction (preferably vented), neutralization, and optionally a wash and exit zone. A continuous halogenating agent phase is achieved during reaction by avoiding complete filling of the reaction zone with polymer. Various halogenated polymers are produced, for example, halogenated linear low density polyethylene and halogenated butyl rubber.
    • 通过使聚合物和卤化剂在连续流动装置中接触来实现聚合物的连续卤化,其中反应物以共连续相存在,或者其中卤化剂作为连续相存在,并且聚合物以不连续相存在, 聚合物在反应过程中变形,并且提供了用于使反应副产物和未反应的卤化剂从反应混合物中分离的装置。 在优选的实施方案中,聚合物在受控条件下通过三个挤出机 - 反应器区域,以实现卤化:进料,反应(优选排气),中和,任选的洗涤和出口区。 在反应期间通过避免用聚合物完全填充反应区而实现连续的卤化剂相。 制备各种卤化聚合物,例如卤化线性低密度聚乙烯和卤化丁基橡胶。