P-cyanophenyl 4-alkyl-4'-biphenylcarboxylate, method for preparing same
and liquid crystal compositions using same
    52.
    发明授权
    P-cyanophenyl 4-alkyl-4'-biphenylcarboxylate, method for preparing same and liquid crystal compositions using same 失效
    4-氰基苯基4-烷基-4- {40-联苯基羧酸酯,其制备方法和使用其的液晶组合物

    公开(公告)号:US4017416A

    公开(公告)日:1977-04-12

    申请号:US619539

    申请日:1975-10-03

    摘要: Novel nematic liquid crystal compounds having a broad nematic temperature range and a positive dielectric anisotropy by themselves, that is, p-cyanophenyl 4-alkyl-4'-biphenylcarboxylates wherein the alkyl is a straight chain alkyl group having 4-8 carbon atoms or a branched alkyl group having 4-7 carbon atoms and having methyl group as branched group, and a method for preparing the same are provided. Further, novel nematic liquid crystal compositions having a broader nematic temper range i.e. a sufficiently lower nematic limit and a sufficiently higher upper nematic limit is provided by using said compounds.

    摘要翻译: 具有宽的向列温度范围和自身的正介电各向异性的新型向列型液晶化合物,即4-烷基-4'-联苯羧酸对氰基苯酯,其中烷基是具有4-8个碳原子的直链烷基或 具有4-7个碳原子并具有甲基作为支链基团的支链烷基及其制备方法。 此外,通过使用所述化合物,提供具有更宽的向列回调范围,即具有足够低的向列极限和足够高的上限向上限的新型向列型液晶组合物。