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    • 1. 发明授权
    • Method for copolyestercarbonate synthesis
    • 共聚酯碳酸酯合成方法
    • US06812320B2
    • 2004-11-02
    • US10105565
    • 2002-03-25
    • James Manio SilvaDavid Michel DardarisGregory Allen O'NeilPaul Dean SybertZhaohui Su
    • James Manio SilvaDavid Michel DardarisGregory Allen O'NeilPaul Dean SybertZhaohui Su
    • C08G6400
    • C08G63/64
    • Thermally stable block copolyestercarbonates comprising chain members derived from at least one dihydroxy-substituted aromatic hydrocarbon moiety and at least one aromatic dicarboxylic acid moiety, said polymer being substantially free of anhydride linkages linking at least two mers of the polyester chain segments, are prepared by a method comprising the steps of: (a) preparing a hydroxy-terminated polyester intermediate comprising structural units derived from at least one dihydroxy-substituted aromatic hydrocarbon moiety and at least one aromatic dicarboxylic acid moiety; and (b) conducting a reaction of the polyester intermediate with phosgene in a reaction mixture comprising water, a substantially water-immiscible organic solvent, and a base, wherein base and phosgene are added simultaneously to the reaction mixture at a substantially constant molar ratio of base to phosgene for a time period of at least about 60% of the total amount of phosgene added.
    • 包含衍生自至少一个二羟基取代的芳族烃部分和至少一个芳族二羧酸部分的链成员的热稳定的嵌段共聚酯碳酸酯,所述聚合物基本上不含连接至少两个聚酯链段的酸酐键,通过 方法包括以下步骤:(a)制备包含衍生自至少一个二羟基取代的芳族烃部分和至少一个芳族二羧酸部分的结构单元的羟基封端的聚酯中间体; 和(b)将聚酯中间体与光气反应在包含水,基本上与水不混溶的有机溶剂和碱的反应混合物中,其中碱和光气以基本恒定的摩尔比同时加入到反应混合物中 基于光气持续至少约60%的光气加入的光气。