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    • 3. 发明申请
    • PROCESS FOR PRODUCING HIGH QUALITY IONOMERS
    • 生产高质量离聚体的方法
    • WO2008057979A2
    • 2008-05-15
    • PCT/US2007/083407
    • 2007-11-02
    • DOW GLOBAL TECHNOLOGIES INC.WALTHER, BrianNEUBAUER, AnthonyKIM, EungPAVLICEK, CalvinDIEHL, Charles
    • WALTHER, BrianNEUBAUER, AnthonyKIM, EungPAVLICEK, CalvinDIEHL, Charles
    • C08F8/44
    • C08F8/44B29C47/6025B29C47/6031B29C47/6037B29C47/6056C08F210/02C08F2800/20C08F8/12C08F220/06
    • A reactive extrusion process for producing an ionomer is disclosed. The process comprising adding a polymer containing a carboxyl functionality to an extruder, then homogenously melting the polymer in a melting zone of the extruder. A first melt seal zone of the extruder is formed to separate the melting zone from an injection zone where an aqueous solution of metallic ions are added to the molten polymer. The first melt seal zone is formed by increasing the pressure in the melt seal zone to a pressure which is higher than the vapor pressure of the water at any point in the injection zone and the reaction zone. The aqueous solution of metallic ions is then mixed with the polymer containing the carboxyl functionality in a reaction zone of the extruder under conditions such that the metallic ions are substantially reacted with the carboxyl functionality. A pressure build-up zone is formed in the extruder, wherein the pressure build-up zone is located no earlier than at the end of the reaction zone wherein the pressure build-up zone is formed by increasing the pressure to a level such that the aqueous solution of metallic ions remains in the liquid phase for a time sufficient to allow for the desired reaction between the metallic ions and the carboxyl functionality of the polymer.
    • 公开了一种用于生产离聚物的反应性挤出方法。 该方法包括将含有羧基官能团的聚合物加入到挤出机中,然后在挤出机的熔融区中均匀熔融聚合物。 形成挤出机的第一熔融密封区域以将熔融区与注入区分离,在注入区中金属离子的水溶液被添加到熔融聚合物中。 第一熔体密封区域通过将熔体密封区域中的压力增加至高于注入区域和反应区域中的任何点处的水蒸气压力的压力而形成。 然后在金属离子基本上与羧基官能团反应的条件下,在挤出机的反应区中将金属离子的水溶液与含有羧基官能团的聚合物混合。 在挤出机中形成压力形成区,其中压力形成区的位置不早于在反应区的末端,其中压力形成区通过将压力增加至使得 金属离子的水溶液在液相中保持足够的时间以允许金属离子与聚合物的羧基官能团之间的所需反应。