Diamino compound and production process for the same
    1.
    发明授权
    Diamino compound and production process for the same 失效
    二氨基化合物和生产工艺相同

    公开(公告)号:US06476266B1

    公开(公告)日:2002-11-05

    申请号:US09471373

    申请日:1999-12-23

    IPC分类号: C07C21100

    CPC分类号: C07C211/50 C07C2601/14

    摘要: Provided is a diamino compound suitable for obtaining a polyimide which can form a liquid crystal alignment film capable of providing a liquid crystal display element, an intermediate therefor and a production process for the same. The above production process is characterized by reacting a cyclohexylbenzene derivative represented by Formula (3): with an acid halide represented by Formula (4): by the Frieldel-Crafts reaction to produce a cyclohexylphenylcarbonyl compound, and reducing the above compound after nitrating, whereby a compound represented by Formula (1) is obtained: (wherein A1 represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; A2 represents a single bond or an alkylene group having 1 to 5 carbon atoms, and one or optional methylene groups which are not adjacent in the group may be substituted with an oxygen atom; X is Br or Cl; m represents an integer of 0 to 3, and n represents an integer of 1 to 5).

    摘要翻译: 提供一种适于获得可形成能够提供液晶显示元件的液晶取向膜的聚酰亚胺的二氨基化合物,其中间体及其制备方法。 上述制备方法的特征在于使式(3)表示的环己基苯衍生物与式(4)表示的酰卤反应:通过Frieldel-Crafts反应制备环己基苯基羰基化合物,硝化后还原上述化合物,由此 得到式(1)表示的化合物:其中,A 1表示氢原子或碳原子数1〜12的烷基,A 2表示单键或碳原子数1〜5的亚烷基, 在基团中不相邻的基团可以被氧原子取代; X是Br或Cl; m表示0〜3的整数,n表示1〜5的整数)。

    Polyamic acid composition, liquid crystal aligning film, and liquid crystal display element
    2.
    发明授权
    Polyamic acid composition, liquid crystal aligning film, and liquid crystal display element 有权
    聚酰胺酸组合物,液晶取向膜和液晶显示元件

    公开(公告)号:US06620339B1

    公开(公告)日:2003-09-16

    申请号:US09581852

    申请日:2000-06-19

    IPC分类号: C09K1912

    摘要: The present invention provides a polyimide alignment film having excellent electrical properties and excellent reliability for use in the field of electronic materials which comprises a polyimide resin produced from a polyamic acid composition comprising a polyamic acid forming a polyimide resin of a low residual voltage and a high voltage holding ratio, and a polyamic acid forming a polyimide resin of a large pre-tilt angle, blended them in the ratio of the former to the latter of 50/50 to 95/5 (weight ratio), a polyamic acid composition for providing such a polyimide aligning film and a liquid crystal display element produced from such an aligning film.

    摘要翻译: 本发明提供了一种聚酰亚胺取向膜,其具有优异的电学性能和可靠性,在电子材料领域中使用的聚酰亚胺树脂包括由聚酰胺酸组合物制成的聚酰亚胺树脂,该聚酰亚胺树脂包含形成低残留电压和高的聚酰亚胺树脂的聚酰胺酸 电压保持率和形成大倾斜角度的聚酰亚胺树脂的聚酰胺酸,以前者与后者的比例以50/50至95/5(重量比)混合,提供用于提供 这种聚酰亚胺取向膜和由这种取向膜制成的液晶显示元件。

    Polyamic acid, polyimide film and liquid crystal aligning film and
liquid crystal display element using the formers
    5.
    发明授权
    Polyamic acid, polyimide film and liquid crystal aligning film and liquid crystal display element using the formers 失效
    聚酰胺酸,聚酰亚胺薄膜和液晶取向膜以及使用前者的液晶显示元件

    公开(公告)号:US5807961A

    公开(公告)日:1998-09-15

    申请号:US860013

    申请日:1997-06-20

    摘要: This invention is directed to a polyimide film useful as use applications for electronic materials; a liquid crystal aligning film using the same; a liquid crystal display element provided with the liquid crystal aligning film; and a polyamic acid used as a raw material of the polyimide constituting the polyimide film. The polyimide used for preparing the above polyimide films, consists of a diamine component, the 50% by mol or more based upon the total diamine, of which is a diamine having a core structure having no polar group such as 1,2-bis(4-(4-aminobenzyl)phenyl)ethane, 1,6-bis(4-(4-aminobenzyl)phenyl)hexane, 1,1-bis(4-(4-aminobenzyl)phenyl)heptane, etc., and a tetracarboxylic acid dianhydride, and if necessary, an aminosilicon compound, is used as a liquid crystal aligning film.

    摘要翻译: PCT No.PCT / JP96 / 03029 Sec。 371日期:1997年6月20日 102(e)日期1996年6月20日PCT 1996年10月17日PCT公布。 第WO97 / 14742号公报 日期1997年04月24日本发明涉及可用作电子材料用途的聚酰亚胺膜; 使用其的液晶取向膜; 设置有液晶取向膜的液晶显示元件; 和作为构成聚酰亚胺膜的聚酰亚胺的原料的聚酰胺酸。 用于制备上述聚酰亚胺膜的聚酰亚胺由二胺组分组成,基于总二胺的50摩尔%以上,其为具有不具有极性基团的核心结构的二胺,例如1,2-双( 4-(4-氨基苄基)苯基)乙烷,1,6-双(4-(4-氨基苄基)苯基)己烷,1,1-双(4-(4-氨基苄基)苯基)庚烷等, 四羧酸二酐,如果需要,使用氨基硅化合物作为液晶取向膜。

    Diamino compounds and their production method
    10.
    发明授权
    Diamino compounds and their production method 失效
    二氨基化合物及其制备方法

    公开(公告)号:US5382688A

    公开(公告)日:1995-01-17

    申请号:US162318

    申请日:1993-12-07

    摘要: The present invention is to provide diamino compounds useful to polyamide raw materials for production of liquid crystal alignment layers having excellent voltage holding ratios without development of image-sticking phenomena, a method for producing the compounds and liquid crystal display devices equipping the liquid crystal alignment layers.The Diamino compounds are represented by the general formula (1): ##STR1## wherein R indicates hydrogen or an alkyl group having 1 to 8 carbon atoms, further, X, Y and Z indicate hydrogen, an alkyl group having 1 to 3 carbon atoms or fluorine, respectively, and a part or all of them may be the same or different, and the positions of these substitutive groups may be ortho positions or meta positions.

    摘要翻译: 本发明提供可用于生产具有优异的电压保持率的液晶取向层的聚酰胺原料的二氨基化合物而不产生图像粘附现象,该化合物的制备方法和装配液晶取向层的液晶显示装置 。 二氨基化合物由通式(1)表示:其中R表示氢或具有1至8个碳原子的烷基,另外X,Y和Z表示氢,烷基具有1至 3个碳原子或氟,其一部分或全部可以相同或不同,这些取代基的位置可以是邻位或间位。