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    • 4. 发明专利
    • Polyimide, and polyimide precursor
    • 聚酰亚胺和聚酰亚胺前体
    • JP2013023583A
    • 2013-02-04
    • JP2011159837
    • 2011-07-21
    • Ube Industries Ltd宇部興産株式会社
    • TAKAZAWA RYOICHIOKA TAKUYANAKAGAWA MIHARUKOHAMA YUKINORI
    • C08G73/10
    • PROBLEM TO BE SOLVED: To provide a polyimide suitable for transparent substrates used for flexible displays, solar batteries or touch panels and having excellent transparency, high mechanical strength and a small coefficient of thermal linear expansion.SOLUTION: The polyimide obtained by reacting a diamine derivative (including diamines and their derivatives) with a tetracarboxylic acid derivatives (including tetracarboxylic acids and their derivatives) is characterized in that the diamine derivatives include diamine derivatives not having aromatic rings and having light transmittances of ≥90%, or diamine derivatives having aromatic rings and having light transmittances of ≥80%; and the tetracarboxylic acid derivatives include tetracarboxylic acid derivatives having light transmittances of ≥75%.
    • 要解决的问题:提供一种适用于柔性显示器,太阳能电池或触摸面板的透明基板的聚酰亚胺,具有优异的透明性,高机械强度和小的热线性膨胀系数。 解决方案:二胺衍生物(包括二胺及其衍生物)与四羧酸衍生物(包括四羧酸及其衍生物)反应得到的聚酰亚胺的特征在于二胺衍生物包括不具有芳香环并具有光的二胺衍生物 透光率≥90%,或具有芳环的二胺衍生物,透光率≥80%; 四羧酸衍生物包括透光率≥75%的四羧酸衍生物。 版权所有(C)2013,JPO&INPIT
    • 7. 发明专利
    • Method for purifying 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride powder and polyimide using the same
    • 3,3',4,4'-联苯二甲酸二乙酸二水合物粉末和使用其的聚酰亚胺的方法
    • JP2012136501A
    • 2012-07-19
    • JP2011159919
    • 2011-07-21
    • Ube Industries Ltd宇部興産株式会社
    • TAKAZAWA RYOICHIOKA TAKUYANAKAGAWA MIHARUKOHAMA YUKINORIKODA MASAFUMI
    • C07D307/89C08G73/10C08J5/18
    • PROBLEM TO BE SOLVED: To provide a method for easily purifying little colored 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride powder, and to obtain a highly transparent polyimide by using the little colored 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride powder obtained by the method.SOLUTION: In the method for purifying 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride powder, a solvent with solubility at 25°C for 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride of 0.1 g/100 g or higher and the 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride powder are mixed together in the heterogeneous condition wherein at least a part of the 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride powder does not dissolved, and subsequently the undissolved 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride powder is separated to be collected from the mixed liquid.
    • 要解决的问题:为了提供一种容易地纯化少量三色3,3',4,4'-联苯四羧酸二酐粉末的方法,通过使用少量的3,3',4,4'-联苯四羧酸二酐粉末获得高度透明的聚酰亚胺, 通过该方法得到4,4'-联苯四羧酸二酐粉末。 解决方案:在3,3',4,4'-联苯四羧酸二酐粉末的溶液中,在25℃溶解3,3'的4,4'-联苯四羧酸二酐 0.1g / 100g以上,3,3',4,4'-联苯四羧酸二酐粉末在非均相状态下混合在一起,其中至少一部分3,3',4,4'-联苯四羧酸 酸二酐粉末不溶解,随后将未溶解的3,3',4,4'-联苯四羧酸二酐粉末从混合液体中分离出来。 版权所有(C)2012,JPO&INPIT
    • 8. 发明专利
    • Polyurethane resin and polyurethane resin composition
    • 聚氨酯树脂和聚氨酯树脂组合物
    • JP2011157487A
    • 2011-08-18
    • JP2010020721
    • 2010-02-01
    • Ube Industries Ltd宇部興産株式会社
    • OKA TAKUYATAKAZAWA RYOICHIWATABE MASAHIKO
    • C08G18/44C08L61/20C08L63/00C08L75/04C09D11/00H05K3/28
    • PROBLEM TO BE SOLVED: To provide a novel polyurethane resin having introduced thereinto a repeating unit derived from an aromatic ring-containing, bifunctional alcoholic hydroxyl group-terminated polycarbonate, and to provide a novel polyurethane resin composition, particularly, a curable polyurethane resin composition whose curing products are excellent in properties such as bending property and resistance to soldering heat and have enhanced surface hardness.
      SOLUTION: There is provided a polyurethane resin (A) obtained by allowing at least (a) a diisocyanate compound to react with (b) a diol compound containing (b1) an aromatic ring-containing, bifunctional alcoholic hydroxyl group-terminated polycarbonate, as essential ingredients.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种引入到由含芳环的双官能醇羟基封端的聚碳酸酯衍生的重复单元的新的聚氨酯树脂,并提供新的聚氨酯树脂组合物,特别是可固化的聚氨酯 树脂组合物的固化产物具有优异的弯曲性能和耐焊热性能,并具有提高的表面硬度。 解决方案:提供一种聚氨酯树脂(A),其通过使二异氰酸酯化合物中的至少一种与(b)含有(b1)含芳香环,双官能醇羟基封端的(b1) 聚碳酸酯,作为必需成分。 版权所有(C)2011,JPO&INPIT
    • 10. 发明专利
    • Polyimide precursor varnish, and method for producing polyimide varnish
    • 聚酰亚胺前体变体,以及生产聚酰胺变性的方法
    • JP2013023597A
    • 2013-02-04
    • JP2011160371
    • 2011-07-21
    • Ube Industries Ltd宇部興産株式会社
    • TAKAZAWA RYOICHIOKA TAKUYAKOHAMA YUKINORINAKAGAWA MIHARUKUNO SHINJI
    • C08G73/10
    • PROBLEM TO BE SOLVED: To provide a polyimide precursor varnish which can give a polyimide having high transparency, and to provide a method for producing a polyimide varnish.SOLUTION: The method for producing a varnish containing at least an organic solvent and a polyimide precursor represented by general formula (H1) or its polyimide is characterized in that an organic solvent having a light transparency of ≥89% in an optical path length of 1 cm and a wavelength of 400 nm is used as an organic solvent (hereinafter, an organic solvent to be used) contained in the varnish to produce the varnish. (In the general formula (H1), Ais a tetravalent aliphatic group or an aromatic group; Bis a divalent aliphatic group or an aromatic group; Rand Rare each independently H, 1-6C alkyl or 3-9C alkylsilyl).
    • 要解决的问题:提供一种聚酰亚胺前体清漆,其可以得到具有高透明度的聚酰亚胺,并提供一种制备聚酰亚胺清漆的方法。 解决方案:至少含有由通式(H1)表示的有机溶剂和聚酰亚胺前体或其聚酰亚胺的清漆的制造方法的特征在于,在光路中具有≥89%的透光度的有机溶剂 使用长度为1cm,波长为400nm的有机溶剂(以下称为所使用的有机溶剂),以制造清漆。 (通式(H1)中,A 1 是四价脂肪族基团或芳香族基团; B 1 是二价 脂族基团或芳族基团; R 1 和R 2 各自独立地为H,1-6C烷基或3-9C烷基甲硅烷基 )。 版权所有(C)2013,JPO&INPIT