Optically active liquid crystal compound having cyano group
    11.
    发明公开
    Optically active liquid crystal compound having cyano group 失效
    Optisch aktiveFlüssigkristallverbindungenmit einer Cyanogruppe。

    公开(公告)号:EP0267670A1

    公开(公告)日:1988-05-18

    申请号:EP87307217.7

    申请日:1987-08-14

    摘要: An optically liquid crystalline compound having an extremely large spontaneous polarization value and a chiral smectic liquid crystal composition containing the compound are provided, the compound being expressed by the formula
    wherein m represents an integer of 2 to 18; t represents an integer of 0 to 12; n represents 0 or 1; R represents an alkyl group or an alkoxy group each of 2 to 20 carbon atoms, a halogen atom or cyano group; and A and B each represent a single bond,
    wherein X represents hydrogen atom, a halogen atom or cyano group, and a chiral smectic liquid crystal composition containing at least one kind of the above compound.

    摘要翻译: 提供具有非常大的自发极化值的光学液晶组合物和含有该化合物的手性近晶液晶组合物,该化合物由式CHEM表示,其中m表示2至18的整数; l表示0〜12的整数, n表示0或1; R表示2〜20个碳原子的烷基或烷氧基,卤素原子或氰基; A和B各自表示单键,其中X表示氢原子,卤素原子或氰基,以及含有至少一种上述化合物的手性近晶液晶组合物。

    Alpha-hydroxyketone derivatives, liquid crystal compositions containing said derivatives, and liquid crystal devices using said compositions
    20.
    发明公开
    Alpha-hydroxyketone derivatives, liquid crystal compositions containing said derivatives, and liquid crystal devices using said compositions 失效
    阿尔法hydroxyketonabkömmlinge,含有液晶组合物,这些的衍生物和这些组合物施加液晶装置。

    公开(公告)号:EP0409234A2

    公开(公告)日:1991-01-23

    申请号:EP90113860.2

    申请日:1990-07-19

    IPC分类号: C09K19/20

    摘要: α-hydroxyketone derivatives represented by the general formula (I) which are novel optically active compounds; liquid crystal compositions, such as chiral smectic or chiral nematic compositions, containing the derivatives; and liquid crystal devices using the compositions. General Formula (I)
    wherein A and B are independently a radical represented by the general formula (II):
    wherein R 2 is an aliphatic hydrocarbon having 1 to 16 carbon atoms, which may contain -0- and may be substituted by a cyano group and/or a halogen atom,
    are independently a single bond,
    etc., X and Y are independently a single bond, or -CH 2 CH 2 -, etc., or an aliphatic hydrocarbon having 1 to 16 carbon atoms; R 1 is an alkyl group, a phenyl group, or a cyclohexyl group; n is 0 or 1; and the asterisk ( * ) indicates an asymmetric carbon atom.

    摘要翻译: 由通式(I)表示的α-羟基酮衍生物是新的哪个光学活性化合物; 液晶组合物,:如手性或手性向列型组合物近晶,含有该衍生物; 以及使用该组合物的液晶装置。 通式(I) worin A和Bunabhängig自由基由通式(II)表示: worinř<2>是具有1至16个碳原子,其可以包含脂肪族烃-O- 并且可以通过氰基和/或卤素原子,被substituiertem被unabhängig单键,等,X和Yunabhängig单键,或-CH 2 CH等,或脂族 具有1至16个碳原子的烃; [R <1>是烷基,苯基,或环己基; n是0或1; 和星号(*)表示不对称碳原子。