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    Solutions of blocked polyimides or polyamideimides
    1.
    发明申请
    Solutions of blocked polyimides or polyamideimides 审中-公开
    封闭的聚酰亚胺或聚酰胺酰亚胺的溶液

    公开(公告)号：US20080146764A1

    公开(公告)日：2008-06-19

    申请号：US11978917

    申请日：2007-10-30

    申请人： Rolf Gertzmann ,  Beate Baumbach ,  Reinhard Halpaap ,  Wolfram Kuettner

    发明人： Rolf Gertzmann ,  Beate Baumbach ,  Reinhard Halpaap ,  Wolfram Kuettner

    IPC分类号： C08G18/81

    CPC分类号： C08J3/00 ,  C08G18/345 ,  C08G18/807 ,  C08G18/8074 ,  C08G73/1035 ,  C08G73/14 ,  C09D179/08

    摘要： The present invention provides a process for preparing aqueous solutions of NCO group blocked resins having polyimide structures and optionally, polyamide structures. The process comprises the steps of preparing a polymer from at least one polyisocyanate, at least one tricarboxylic monoanhydride and/or at least one tetracarboxylic anhydride, and optionally, tricarboxylic acids, tetracarboxylic acids and/or dicarboxylic acids, at least one NH-functional lactam and/or 3,5-dimethylpyrazole and/or butanone oxime. The reaction mixture is subsequently reacted with a base, and the resulting resin is dissolved in water. The resins provide high-grade, highly flexible coatings having the excellent properties and chemical resistance typical of polyamideimides.

    摘要翻译： 本发明提供了制备具有聚酰亚胺结构和任选的聚酰胺结构的NCO基封端树脂的水溶液的方法。 该方法包括从至少一种多异氰酸酯，至少一种三羧酸单酐和/或至少一种四羧酸酐以及任选的三羧酸，四羧酸和/或二羧酸，至少一种NH-官能的内酰胺 和/或3,5-二甲基吡唑和/或丁酮肟。 随后将反应混合物与碱反应，将所得树脂溶于水中。 这些树脂提供高级，高度柔性的涂层，具有优异的聚酰胺酰亚胺典型性能和耐化学性。