Method for preparing copolyestercarbonates
    13.
    发明申请
    Method for preparing copolyestercarbonates 审中-公开
    共聚酯碳酸酯的制备方法

    公开(公告)号:US20060160961A1

    公开(公告)日:2006-07-20

    申请号:US11276026

    申请日:2006-02-10

    CPC classification number: C08G63/64

    Abstract: A method of preparing block copolyestercarbonates wherein al one dihydroxy-substituted aromatic hydrocarbon moiety and at least one aromatic diacid chloride are reacted under interfacial conditions to give a hydroxy-terminated polyester intermediate. The dihydroxy-substituted aromatic compound is used in about 10 mole to about 125 mole percent excess relative to the diacid chloride. Enhanced control of hydroxy-terminated polyester intermediate molecular weight is achieved by limiting the amount of water present to provide a final salt level of greater than 30 percent. The final salt level is a theoretical value but is readily calculable. The hydroxy-terminated polyester intermediate is then converted to a block copolyestercarbonate by reaction with a carbonate precursor such as phosgene.

    Abstract translation: 制备嵌段共聚酯碳酸酯的方法,其中将Al 1羟基取代的芳族烃部分和至少一种芳族二酰氯在界面条件下反应得到羟基封端的聚酯中间体。 二羟基取代的芳族化合物以相对于二酰氯为约10摩尔至约125摩尔%的过量使用。 羟基封端的聚酯中间体分子量的增强控制是通过限制存在的水量提供大于30%的最终盐水平来实现的。 最终的盐水平是理论值,但容易计算。 然后通过与诸如光气的碳酸酯前体反应将羟基封端的聚酯中间体转化成嵌段共聚酯碳酸酯。

    Polyarylate compositions
    16.
    发明申请
    Polyarylate compositions 有权
    聚芳酯组合物

    公开(公告)号:US20060004152A1

    公开(公告)日:2006-01-05

    申请号:US10881957

    申请日:2004-06-28

    Abstract: The present invention relates to a polymer composition comprising a transparent polymer blend. The polymer blend comprises a first resin and a second resin. The first resin comprises polyarylate structural units of formula I, wherein R1 is independently at each occurrence a C1-C12 alkyl group, or a halogen atom, and p is 0 to 3. The second resin is selected from the group consisting of polycarbonates, polyarylates and copolyestercarbonates. The first resin and the second resin are further characterized by a difference in polyarylate structural unit conte

    Abstract translation: 本发明涉及包含透明聚合物共混物的聚合物组合物。 聚合物共混物包括第一树脂和第二树脂。 第一树脂包括式I的多芳基化合物结构单元,其中R 1在每次出现时独立地为C 1 -C 12烷基,或 卤素原子,p为0〜3。第二树脂选自聚碳酸酯,聚芳酯和共聚酯碳酸酯。 第一树脂和第二树脂的特征还在于多芳基化合物结构单元的差异 TIF”alt =“文本丢失或难以辨认

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