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    • 29. 发明授权
    • Apparatus for continuous production of polymers in carbon dioxide
    • 用于在二氧化碳中连续生产聚合物的装置
    • US07410620B2
    • 2008-08-12
    • US11112420
    • 2005-04-22
    • Paul A. CharpentierJoseph M. DeSimoneGeorge W. Roberts
    • Paul A. CharpentierJoseph M. DeSimoneGeorge W. Roberts
    • B01J19/00C08F6/00C08F2/12
    • B01J19/1881B01J3/008B01J8/0055B01J8/006B01J19/2435B01J19/2465B01J19/2475B01J2219/00006B01J2219/00015B01J2219/00033B01J2219/00114B01J2219/00135B01J2219/00166C08F2/04C08F14/22Y02P20/544Y10S526/942
    • A method for carrying out the continuous polymerization of a monomer in a carbon dioxide reaction medium comprises the steps of: (a) providing an apparatus including a continuous reaction vessel and a separator; (b) carrying out a polymerization reaction in the reaction vessel by combining a monomer and a carbon dioxide reaction medium therein (and preferably by also combining an initiator therein), wherein the reaction medium is a liquid or supercritical fluid, and wherein the reaction produces a solid polymer product in the reaction vessel; then (c) withdrawing a continuous effluent stream from the reaction vessel during the polymerization reaction, wherein the effluent stream is maintained as a liquid or supercritical fluid; then (d) passing the continuous effluent stream through the separator and separating the solid polymer therefrom while maintaining at least a portion of the effluent stream as a liquid or supercritical fluid; and then (e) returning at least a portion of the continuous effluent stream to the reaction vessel while maintaining the effluent stream as a liquid or supercritical fluid. The need for significant recompression of the continuous effluent stream prior to return to the reaction vessel is thereby minimized. Apparatus for carrying out such methods is also disclosed.
    • 在二氧化碳反应介质中进行单体的连续聚合的方法包括以下步骤:(a)提供包括连续反应容器和分离器的装置; (b)通过在其中组合单体和二氧化碳反应介质(优选通过将其中的引发剂结合在其中)来在反应容器中进行聚合反应,其中反应介质是液体或超临界流体,其中反应产生 反应容器中的固体聚合物产物; 然后(c)在聚合反应期间从反应容器中取出连续的流出物流,其中流出物流被保持为液体或超临界流体; 然后(d)使连续的流出物流通过分离器并从其中分离固体聚合物,同时将至少一部分流出物流保持为液体或超临界流体; 然后(e)将至少一部分连续流出物流返回到反应容器中,同时将流出物流保持为液体或超临界流体。 因此,在返回到反应容器之前对连续流出物流进行显着再压缩的需要被最小化。 还公开了用于执行这种方法的装置。