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    Polyimide precursor solution, process for the production thereof, coating or film obtained therefrom and process for producing the film
    2.
    发明公开
    Polyimide precursor solution, process for the production thereof, coating or film obtained therefrom and process for producing the film 失效
    聚酰亚胺前体溶液，以它们的制备方法，用于制备该膜由其获得的涂层或膜和方法

    公开(公告)号：EP0811648A1

    公开(公告)日：1997-12-10

    申请号：EP97108919.8

    申请日：1997-06-03

    Applicant: Unitika Limited.

    Inventor： Seto, Keitarou ,  Echigo, Yoshiaki ,  Okamoto, Shoji ,  Saitou, Minoru

    IPC: C08G73/10 ,  C07C237/28

    CPC classification number: C07C317/44 ,  C07C233/75 ,  C07C235/56 ,  C08G73/1039 ,  C08G73/1064 ,  C08G73/1067 ,  C08G73/1071

    Abstract: This invention provides a polyimide precursor solution having high concentration and low viscosity and a production process thereof, and polyimide coatings and films having excellent physical properties obtained therefrom and a production process thereof. Particularly, it relates to a polyimide precursor solution which contains a salt of a specific diamine with a specific tetracarboxylic acid, as its solute; to a process for the production of the polyimide precursor solution, which comprises allowing 1 mole of a specified diamine to react with 0.3 to 0.9 mole of a specific tetracarboxylic acid dianhydride, thereby obtaining a diamine, and subsequently adding 0.95 to 1.05 moles of a specified tetracarboxylic acid to 1 mole of the thus obtained diamine; to a polyimide coating or film obtained from the aforementioned polyimide precursor solution; and to a process for the production of the polyimide coating or film, which comprises coating the aforementioned polyimide precursor solution on a substrate and heating the coat to effect imidization.

    Abstract translation: 本发明提供具有高浓度和低粘度和其制造方法，和聚酰亚胺涂层，并具有从那里获得优异的物理性能的薄膜和其制造方法的聚酰亚胺前体溶液。 具体地，它涉及一种含有具有特定四羧酸的特定二胺的盐，作为它的一个溶质聚酰亚胺前体溶液; 用于生产聚酰亚胺前体溶液的方法，包括使一个指定的二胺的一摩尔与0.3反应以0.9摩尔的特定四羧酸二酐，由此获得的二胺，接着将规定的0.95〜1.05摩尔的过程 四羧酸1个摩尔这样得到的二胺; 从上述聚酰亚胺前体溶液，以聚酰亚胺涂层或膜获得的; 和用于生产所述聚酰亚胺涂层或电影，其包括涂布在基板上的上述聚酰亚胺前体溶液并加热该涂层以实现酰亚胺化的过程。

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