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64 条记录 (耗时 0.019 秒)

    Liquid crystal composition
    4.
    发明授权
    Liquid crystal composition 失效
    液晶组成

    公开(公告)号：US5342544A

    公开(公告)日：1994-08-30

    申请号：US968152

    申请日：1992-10-26

    申请人： Tomijiro Naito ,  Yumiko Sato ,  Toshiro Yukinari ,  Toshihiro Shibata ,  Masaki Kimura ,  Yukari Shinada

    发明人： Tomijiro Naito ,  Yumiko Sato ,  Toshiro Yukinari ,  Toshihiro Shibata ,  Masaki Kimura ,  Yukari Shinada

    IPC分类号： C09K19/06 ,  C09K19/42 ,  C09K19/44 ,  C09K19/46 ,  C09K19/12 ,  C09K19/30

    CPC分类号： C09K19/46 ,  C09K19/06 ,  C09K19/42 ,  C09K19/44

    摘要： A nematic liquid crystal composition comprising at least one member selected from 4-alkyl- or 4-alkoxy-benzoic acids represented by the following general formula (I) , particularly a nematic liquid crystal composition comprising a carboxylic acid mixture composed of at least one member selected from 4-alkyl- or 4-alkoxy-benzoic acids represented by the following general formula (I) and at least one member selected from 4-alkylcyclohexanecarboxylic acids represented by the following general formula (IV): ##STR1## wherein R.sub.1 stands for an alkyl or alkoxy group having 1 to 12 carbon atoms and R.sub.4 stands for an alkyl group having 1 to 12 carbon atoms.

    摘要翻译： 一种向列型液晶组合物，其包含至少一种选自下列通式（I）表示的4-烷基 - 或4-烷氧基 - 苯甲酸的成分，特别是包含由至少一种成分 选自由以下通式（I）表示的4-烷基 - 或4-烷氧基 - 苯甲酸和选自以下通式（IV）表示的4-烷基环己烷羧酸中的至少一种： （IV）其中R1代表具有1至12个碳原子的烷基或烷氧基，R4代表具有1至12个碳原子的烷基。

    Fluoroalkane derivative
    7.
    发明授权
    Fluoroalkane derivative 失效
    氟烷烃衍生物

    公开(公告)号：US4867903A

    公开(公告)日：1989-09-19

    申请号：US22928

    申请日：1987-03-06

    申请人： Hiroyuki Nohira ,  Masanao Kamei ,  Shinichi Nakamura ,  Kazuharu Katagiri

    发明人： Hiroyuki Nohira ,  Masanao Kamei ,  Shinichi Nakamura ,  Kazuharu Katagiri

    IPC分类号： C07C69/773 ,  C07D239/26 ,  C09K19/06 ,  C09K19/12 ,  C09K19/20 ,  C09K19/34 ,  C09K19/46 ,  C09K19/48

    CPC分类号： C07D239/26 ,  C09K19/06 ,  C09K19/126 ,  C09K19/2021 ,  C09K19/3463 ,  C09K19/46 ,  C09K19/48

    摘要： A fluoroalkane derivative represented by the formula: ##STR1## wherein R denotes an alkyl group having 1-16 carbon atoms, C* denotes an asymmetric carbon atom, R.sup.1 denotes an alkyl or alkoxy group having 1-16 carbon atoms; ##STR2## respectively denote a phenylene group ##STR3## a cyclohexylene group ##STR4## or a pyrimidinylene group ##STR5## p is 0 or 1, q is 0 or 1 when p is 1, r is 0 or 1; and l, m and n are respectively 0 or a positive integer satisfying the relationship of l+m+n.gtoreq.1. The fluoroalkane derivative has a fluorine atom providing a large dipole moment and directly connected to an asymmetric carbon atom, so that it provides a high speed responsive characteristic through an increased spontaneous polarization when contained in a liquid crystal composition, especially a ferroelectric liquid crystal composition.

    摘要翻译： 由下式表示的氟烷烃衍生物：其中R表示具有1-16个碳原子的烷基，C *表示不对称碳原子，R1表示具有1-16个碳原子的烷基或烷氧基; 分别表示亚苯基“亚甲基”或“嘧啶基”，p为0或1，当p为1时，q为0或1，r为0或1; l，m和n分别为0或满足l + m + n> / = 1的关系的正整数。 氟烷烃衍生物具有提供大的偶极矩并直接连接到不对称碳原子的氟原子，从而当包含在液晶组合物，特别是铁电液晶组合物中时，通过增加的自发极化提供高速响应特性。

    Liquid crystal composition
    8.
    发明授权
    Liquid crystal composition 失效
    液晶组成

    公开(公告)号：US3979319A

    公开(公告)日：1976-09-07

    申请号：US347632

    申请日：1973-04-04

    申请人： Masakazu Fukai ,  Komei Asai ,  Seiichi Nagata ,  Hiroshi Tatsuta ,  Koshiro Mori

    发明人： Masakazu Fukai ,  Komei Asai ,  Seiichi Nagata ,  Hiroshi Tatsuta ,  Koshiro Mori

    IPC分类号： C07C69/773 ,  C09K19/06 ,  C09K19/20 ,  C09K19/22 ,  C09K19/24 ,  C09K19/26 ,  C09K19/42 ,  G02F1/1337 ,  C09K3/34

    CPC分类号： C09K19/2007 ,  C09K19/06 ,  C09K19/22 ,  C09K19/24 ,  C09K19/26 ,  C09K19/42 ,  G02F1/133703

    摘要： A liquid crystal composition comprises a liquid crystal and a carboxylic acid or its ester as an additive. By the presence of the additive, the longitudinal axes of liquid crystal molecules can be spontaneously oriented in a direction perpendicular to the surface of a holding wall of a liquid crystal display plate. In particular, the additives may be esters of p-hydroxy- or m-hydroxy-benzoic acid, phenylacetic acids having 1 or 2 hydroxy groups or their esters, phenylpropionic acids having 1 or 2 hydroxy groups or their esters, or 3, 4, 5-trihydroxybenzoic acid esters, or said additives may be selected from the group consisting of compounds having the formulae: ##SPC1##Wherein R.sub.3 is hydrogen or a normal alkyl group having 1 to 18 carbon atoms; R.sub.5 is hydrogen, hydroxy, a normal alkyl group having 1 to 16 carbon atoms or a normal alkoxy group having 1 to 16 carbon atoms; R.sub.6 is hydrogen, hydroxy or nitro; n.sub.1 is 1 or 2: and n.sub.2 is 0, 1 or 2.

    摘要翻译： 液晶组合物包含液晶和羧酸或其酯作为添加剂。 通过存在添加剂，液晶分子的纵轴可以在与液晶显示板的保持壁的表面垂直的方向上自发取向。 特别地，添加剂可以是对羟基或间羟基 - 苯甲酸的酯，具有1或2个羟基的苯乙酸或其酯，具有1或2个羟基的苯基丙酸或其酯， 5-三羟基苯甲酸酯或所述添加剂可以选自具有下式的化合物：