Carboxy-terminated oligomeric polyester compositions and method for making
    5.
    发明授权
    Carboxy-terminated oligomeric polyester compositions and method for making 失效
    羧基封端的低聚聚酯组合物及其制备方法

    公开(公告)号:US07557174B2

    公开(公告)日:2009-07-07

    申请号:US11528206

    申请日:2006-09-27

    IPC分类号: C08G63/00 C08G63/87 C08F20/00

    摘要: The present invention provides carboxy-terminated oligomeric polyester compositions useful in the preparation of “weatherable” polymeric materials, for example weatherable copolyestercarbonates. In one aspect the present invention provides an oligomeric polyester composition comprising structural units derived from at least one diacid, at least one diaryl carbonate and at least one diol. The structural units derived from the diacid are present in a molar excess of from about 10% to about 40% based on a ratio of moles of diacid-derived structural units to moles of diol-derived structural units present in the oligomeric polyester composition. The oligomeric polyester composition is further characterized by the presence of at least some phenoxy end groups.

    摘要翻译: 本发明提供了可用于制备“耐候性”聚合物材料的羧基封端的低聚聚酯组合物,例如耐候性共聚酯碳酸酯。 在一个方面,本发明提供了包含衍生自至少一种二酸,至少一种碳酸二芳酯和至少一种二醇的结构单元的低聚聚酯组合物。 基于二酸衍生的结构单元的摩尔数与存在于低聚聚酯组合物中的二醇衍生的结构单元的摩尔数的比例,衍生自二酸的结构单元的摩尔过量为约10%至约40%。 低聚聚酯组合物的特征还在于存在至少一些苯氧基端基。