Method for end-capping polycarbonate resins and composition for use in same
    5.
    发明授权
    Method for end-capping polycarbonate resins and composition for use in same 有权
    封端聚碳酸酯树脂的方法及其组合物

    公开(公告)号:US06500914B1

    公开(公告)日:2002-12-31

    申请号:US09682724

    申请日:2001-10-10

    IPC分类号: C08G6400

    CPC分类号: C08G64/14 C08G64/42

    摘要: A method for end-capping polycarbonate resins, comprising the step of processing a mixture comprising a polycarbonate having free hydroxyl-end groups and an end-capping reagent in a melt transesterification reaction to produce a polycarbonate resin, wherein the end-capping reagent comprises a mixture of:(a) at least one species of a symmetrical activated aromatic carbonate, and (b) at least one species of a symmetrical non-activated aromatic carbonate, whereby said end-capping reagent reacts with at least some of the free hydroxyl end-groups of the polycarbonate to produce an end-capped polycarbonate resin.

    摘要翻译: 一种封端聚碳酸酯树脂的方法,包括在熔融酯交换反应中处理包含游离羟基端基的聚碳酸酯和封端剂的混合物以制备聚碳酸酯树脂的步骤,其中封端剂包括 混合物:(a)至少一种对称活性芳族碳酸酯,和(b)至少一种对称非活化芳族碳酸酯,其中所述封端剂与至少一些游离羟基末端反应 的聚碳酸酯组,以制备端封聚碳酸酯树脂。