Single-pot process for the production of polyester-co-carbonate polyols
    2.
    发明授权
    Single-pot process for the production of polyester-co-carbonate polyols 有权
    用于生产聚酯碳酸酯多元醇的单锅法

    公开(公告)号:US09181391B2

    公开(公告)日:2015-11-10

    申请号:US14373955

    申请日:2013-02-04

    IPC分类号: C08G64/30 C08G63/64

    CPC分类号: C08G64/305 C08G63/64

    摘要: Polyester-co-carbonate polyols and methods for producing the same are provided. The method comprises reacting one or more alcohols having an OH functionality of two or more with one or more organic diacids to form a reaction mixture, adding a first amount of dialkyl carbonate to the reaction mixture to remove water remaining from the reaction mixture by azeotropic drying, adding a transesterification catalyst to the dialkyl carbonate containing reaction mixture and adding a second amount of dialkyl carbonate to the catalyst containing reaction mixture.

    摘要翻译: 提供了聚酯 - 碳酸酯多元醇及其制备方法。 该方法包括将一种或多种具有两个或多个OH官能团的醇与一种或多种有机二酸反应以形成反应混合物,向反应混合物中加入第一量的碳酸二烷基酯以通过共沸干燥除去残留在反应混合物中的水 向含碳酸二烷基酯的反应混合物中加入酯交换催化剂,并向含催化剂的反应混合物中加入第二量的碳酸二烷基酯。