Liquid crystal display element
    23.
    发明授权
    Liquid crystal display element 失效
    液晶显示元件

    公开(公告)号:US4381886A

    公开(公告)日:1983-05-03

    申请号:US234261

    申请日:1981-02-13

    IPC分类号: G02F1/1337 G02F1/13

    CPC分类号: G02F1/133711 Y10T428/1023

    摘要: A liquid crystal display element which may have a multi-layer structure comprising substrates having electrodes and liquid crystal orientation controlling films on the sides thereof facing a liquid crystal layer and one or more liquid crystal layers interposed between said substrates, characterized in that the liquid crystal orientation controlling film is made from a copolymer produced by reacting a dibasic acid dihydrazide, a diamine and a tetracarboxylic acid dianhydride, followed by ring closure and dehydration with heating, is excellent in transparency and the electrode (partially reflected) pattern is hardly observable.

    摘要翻译: 一种液晶显示元件,其可以具有多层结构,其包括在其侧面上具有电极的液晶取向控制膜和液晶层以及插入在所述基板之间的一个或多个液晶层的基板,其特征在于,液晶 取向控制膜由通过二元酸二酰肼,二胺和四羧酸二酸酐反应而制得的共聚物,随后加热闭环和脱水而制成,透明度优异,电极(部分反映)图形几乎不可观察到。

    Liquid crystal composition
    24.
    发明授权
    Liquid crystal composition 失效
    液晶组成

    公开(公告)号:US4324455A

    公开(公告)日:1982-04-13

    申请号:US186043

    申请日:1980-09-11

    CPC分类号: C09B25/00 C09K19/60

    摘要: A liquid crystal composition containing at least one quinophthalone series dye represented by the formula ##STR1## wherein: X represents hydrogen, a chlorine atom or a bromine atom; and R represents --OR.sup.1 or --SR.sup.1, wherein R.sup.1 represents an alkyl group, a cycloalkyl group, an alkoxyalkyl group, a phenyl group, a p-hydroxyphenyl group, a p-cycloalkylphenyl group, a p-alkylphenyl group, a p-alkoxyphenyl group or an aralkyl group; ##STR2## wherein R.sup.2 and R.sup.3 each represents hydrogen, an alkyl group, a hydroxyalkyl group, an alkoxyalkyl group, a cycloalkyl group, a phenyl group, a p-alkylphenyl group, a p-hydroxyphenyl group, a p-alkoxyphenyl group or an aralkyl group; or a saturated heterocyclic ring.

    摘要翻译: 一种液晶组合物,含有至少一种下式表示的喹酞酮系列染料,其中:X表示氢,氯原子或溴原子; R表示-OR1或-SR1,其中R1表示烷基,环烷基,烷氧基烷基,苯基,对羟基苯基,对环烷基苯基,对烷基苯基,对 - 烷氧基苯基 基团或芳烷基; 其中R2和R3各自表示氢,烷基,羟基烷基,烷氧基烷基,环烷基,苯基,对烷基苯基,对羟基苯基,对 - 烷氧基苯基或 芳烷基 或饱和杂环。

    Heat-resistant resin from aromatic cyanamide compound and aromatic amine
compound
    27.
    发明授权
    Heat-resistant resin from aromatic cyanamide compound and aromatic amine compound 失效
    芳香族氰胺化合物和芳香胺化合物的耐热树脂

    公开(公告)号:US4486583A

    公开(公告)日:1984-12-04

    申请号:US525700

    申请日:1983-08-23

    CPC分类号: C08G73/0644 Y10T428/31504

    摘要: A polymer which has excellent heat resistance and mechanical properties which is useful as a molding material, contains the structural units having the following formulae [I] and [II]: ##STR1## wherein A and B each represents an at least divalent organic group having at least one aromatic ring such as a diphenyl ring; and m and n each represents a number of at least 1. The polymer is used in the form of a solution or varnish as an impregnating, laminating, bonding or film-forming coating or prepreg-forming varnish. A resin composition for forming the polymer contains an aromatic cyanamide compound and an aromatic amine which are reacted to form a prepolymer which, upon heating, is converted into a cured polymer having the structural units of formulae [I] and [II].

    摘要翻译: 具有优异的耐热性和机械性能的聚合物可用作成型材料,含有具有下式[I]和[II]的结构单元:即具有异质单胺环的聚合物单元 (即,具有正常三聚氰胺环的聚合物单元)其中A和B各自表示至少具有至少一个芳环的二价有机基团,例如二苯基环; m和n各自表示至少为1的数量。聚合物以溶液或清漆的形式用作浸渍,层压,粘合或成膜涂层或预浸料形成清漆。 用于形成聚合物的树脂组合物含有芳香族氰酰胺化合物和芳族胺,它们反应形成预聚物,其在加热时转化为具有式[I]和[II]结构单元的固化聚合物。

    Electrophotographic developing method using magnetic toners
    28.
    发明授权
    Electrophotographic developing method using magnetic toners 失效
    使用磁性调色剂的电子照相显影方法

    公开(公告)号:US4433042A

    公开(公告)日:1984-02-21

    申请号:US327197

    申请日:1981-12-03

    摘要: Electrophotographic copying is carried out by electrostatically forming a latent image on a recording medium, supplying a magnetic toner of single component system containing at least a resin and fine particles of forromagnetic material on a non-magnetic sleeve provided with a permanent magnet roller having a plurality of magnetic poles therein, transporting the magnetic toner into a gap between the recording medium and the non-magnetic sleeve, attaching the magnetic toner to the recording medium, thereby developing the latent image into a visible image, electrostatically transferring the toner image thus formed on the recording medium onto a transfer sheet, and fixing the transferred image, thereby obtaining a final image, wherein the magnetic toner has a resistivity of more than 5.times.10.sup.15 .OMEGA.cm and a relative dielectric constant of less than 3.0.Good development and good transferred image are obtained even with a recording medium having a low relative dielectric constant and a high insulating property, and practically high transfer efficiency can be obtained with the ordinary sheet having a low resistivity as a transfer sheet.

    摘要翻译: 通过在记录介质上静电形成潜像来进行电子照相复印,将含有至少一种树脂的单组分体系的磁性调色剂和非磁性的细小颗粒供给到具有多个 将磁性调色剂输送到记录介质和非磁性套筒之间的间隙中,将磁性调色剂附着到记录介质上,从而将潜像显影成可见图像,将如此形成的调色剂图像静电转印到 将记录介质转印到转印纸上,并固定转印图像,从而获得最终图像,其中磁性调色剂的电阻率大于5×10 15欧姆·厘米,相对介电常数小于3.0。 即使使用具有低相对介电常数和高绝缘性的记录介质,也能获得良好的显影和良好的转印图像,并且通过具有低电阻率的普通片作为转印片可以获得实际上高的转印效率。

    Pleochroic color display device
    29.
    发明授权
    Pleochroic color display device 失效
    多色彩色显示设备

    公开(公告)号:US4396251A

    公开(公告)日:1983-08-02

    申请号:US125478

    申请日:1980-02-28

    CPC分类号: G02F1/13737 G02F1/133514

    摘要: A pleochroic color display device is provided which comprises a layer of guest-host type liquid crystal sandwiched between two transparent electrodes for driving the liquid crystal, the guest-host liquid crystal containing a dichroic dye as guest material, and a color filter disposed in front or rear of the layer of the guest-host type liquid crystal. High contrast pleochroic color displays can be obtained by selecting a blackish dye as the dichroic dye. Dichroic displays other than white ones can be produced by the use of a single liquid crystal cell and a single color filter (with one color).

    摘要翻译: 提供了一种双色彩色显示装置,其包括夹在用于驱动液晶的两个透明电极之间的客体主体型液晶层,包含作为客体材料的二色性染料的客体主体液晶和设置在前面的滤色器 或客体主体型液晶层的后方。 通过选择黑色染料作为二色性染料,可以获得高对比度多色显色。 可以通过使用单个液晶单元和单个滤色器(一种颜色)来产生除白色以外的二向色显示。