Liquid crystal compounds
    1.
    发明授权
    Liquid crystal compounds 失效
    液晶化合物

    公开(公告)号:US5262086A

    公开(公告)日:1993-11-16

    申请号:US903953

    申请日:1992-06-26

    CPC分类号: C09K19/0266 C09K19/2021

    摘要: (R)- and (S)-enantiomer composition represented by the formula (I) having sufficient high optical purity for exhibiting optically tristable states in S*(3) phase; ##STR1## wherein Ra means a C.sub.5 -C.sub.14 alkyl group or a C.sub.5 -C.sub.14 alkoxy group, preferably a C.sub.5 -C.sub.14 alkyl group, Rb means a C.sub.4 -C.sub.12 normal alkyl group or a C.sub.4 -C.sub.12 branched alkyl group, X means a ##STR2## group or a ##STR3## group, Z means a fluorine containing alkyl group, preferably a trifluoromethyl group and * shows an optically active carbon.

    摘要翻译: (I)表示的(S) - 对映异构体组合物具有足够高的光学纯度以在S *(3)相中显示光学三态状态; (I)其中R a表示C 5 -C 14烷基或C 5 -C 14烷氧基,优选C 5 -C 14烷基,R b表示C 4 -C 12正烷基或C 4 -C 12支链烷基,X 表示组或组,Z表示含氟烷基,优选三氟甲基,*表示光学活性碳。