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    Method of producing polyimide resin, method of producing polyimide coating, method of producing polyamic acid solution, polyimide coating, and polyamic acid solution
    8.
    发明公开
    Method of producing polyimide resin, method of producing polyimide coating, method of producing polyamic acid solution, polyimide coating, and polyamic acid solution 有权
    一种用于制备聚酰亚胺树脂的方法，用于制备聚酰亚胺涂层的方法，处理用于的聚酰胺酸溶液和聚酰亚胺涂层的聚酰胺酸溶液的制备

    公开(公告)号：EP2910591A1

    公开(公告)日：2015-08-26

    申请号：EP15155847.5

    申请日：2015-02-19

    申请人： TOKYO OHKA KOGYO CO., LTD.

    发明人： Noda, Kunihiro ,  Chisaka, Hiroki ,  Shiota, Dai ,  Someya, Kazuya

    IPC分类号： C08G73/10

    CPC分类号： C08G73/1032 ,  C08G73/1028

    摘要： Provided is a method of producing a polyimide resin or a polyimide coating, which is capable of producing a polyimide resin or a polyimide coating, each having excellent heat resistance and mechanical properties and having low hygroscopicity, while suppressing foaming. Provided is also a method of producing a polyamic acid solution, in which not only foaming at the time of polyimide resin production can be suppressed, but also a polyimide resin that is excellent in heat resistance and mechanical properties and low in hygroscopicity is given. Provided is further a polyimide coating and a polyamic acid solution obtained from these methods, respectively. A polyamic acid obtained from a reaction between a tetracarboxylic acid dianhydride component and a diamine component is heated in a mixed solvent composed of N,N,N',N'-tetramethylurea and at least one solvent selected from specified aprotic polar organic solvents and specified glycol ethers, to yield a polyimide resin.

    POLYIMIDE FOAM AND METHOD FOR PRODUCING SAME
    10.
    发明公开
    POLYIMIDE FOAM AND METHOD FOR PRODUCING SAME 有权
    VERFAHREN ZU SEINER HERSTELLUNG的POLYIMIDSCHAUMSTOFF

    公开(公告)号：EP2348065A1

    公开(公告)日：2011-07-27

    申请号：EP09826117.5

    申请日：2009-11-12

    申请人： Ube Industries, Ltd.

    发明人： KANEKO Yukio ,  YAMAGUCHI Hiroaki ,  KOHDA Masafumi

    IPC分类号： C08J9/02 ,  C08G73/10

    CPC分类号： C08J9/00 ,  C08G73/1007 ,  C08G73/1028 ,  C08G73/1042 ,  C08G73/1067 ,  C08G2101/00 ,  C08G2101/005 ,  C08J9/02 ,  C08J2379/08 ,  C08L79/08

    摘要： Disclosed is a polyimide foam made of an aromatic polyimide composed of a tetracarboxylic acid component, which is composed of 0 to 90% by mole of a 3,3',4,4'-biphenyltetracarboxylic acid component and 100 to 10% by mole of a 3,3',4,4'-benzophenone tetracarboxylic acid component and/or a 2,3,3',4'-biphenyltetracarboxylic acid component, and a diamine component, which is composed of 50 to 97% by mole of m-phenylenediamine and 50 to 3% by mole of 4,4'-methylenedianiline. The polyimide foam can be produced easily, has uniform and fine cells, and has the mechanical properties required for practical use as a foam, such as flexibility that prevents the foam from cracking easily even when deformed and excellent cushioning properties, as well as heat resistance that can resist use at high temperatures.

    摘要翻译： 公开了一种由四羧酸成分构成的芳香族聚酰亚胺构成的聚酰亚胺发泡体，其由0〜90摩尔％的3,3'，4,4'-联苯四羧酸成分和100〜10摩尔％ 3,3'，4,4'-二苯甲酮四羧酸组分和/或2,3,3'，4'-联苯四羧酸组分和二胺组分，其由50-97摩尔％的m 苯二胺和50〜3摩尔％的4,4'-亚甲基二苯胺。 聚酰亚胺泡沫体可以容易地制造，具有均匀和细小的细胞，并且具有作为泡沫的实际使用所需的机械性能，例如即使在变形时也能容易地破裂泡沫的柔软性以及优异的缓冲性能以及耐热性 可以抵抗高温下的使用。