2-cyano-4-halogenophenyl esters
    1.
    发明授权
    2-cyano-4-halogenophenyl esters 失效
    2-氰基-4-卤代苯基酯

    公开(公告)号:US4603018A

    公开(公告)日:1986-07-29

    申请号:US530786

    申请日:1983-09-09

    摘要: New compounds useful as constituents of liquid crystal compositions exhibiting a negative dielectric anisotropy are provided, which are 2-cyano-4-halogenophenyl esters expressed by the general formula ##STR1## wherein R represents hydrogen atom or an alkyl group or an alkoxy group of 1 to 10 carbon atoms; ##STR2## each represent either one of ##STR3## l, m and n each represent 0 or 1 and the total of l+m+n is 1, 2 or 3; X represents F or Cl; and Y and Z each represent hydrogen atom or F or Cl.

    摘要翻译: 提供了作为表现出负介电各向异性的液晶组合物成分的新化合物,它们是由通式(I)表示的2-氰基-4-卤代苯基酯,其中R表示氢原子或烷基或烷氧基 1〜10个碳原子的基团; 每个代表 1,m和n各自表示0或1,并且l + m + n的总和为1,2或3; X表示F或Cl; Y和Z各自表示氢原子或F或Cl。

    2-cyano-4-halogenophenyl substituted-benzoates
    5.
    发明授权
    2-cyano-4-halogenophenyl substituted-benzoates 失效
    2-氰基-4-卤代苯基取代的苯甲酸酯

    公开(公告)号:US4659501A

    公开(公告)日:1987-04-21

    申请号:US692166

    申请日:1985-01-17

    摘要: Novel liquid crystal compounds, 2-cyano-4-halogenophenyl substituted-benzoates suitable as a component constituting a liquid crystal composition which exhibits a negative dielectric anisotropy, and a liquid crystal composition containing the same are provided, which benzoates are expressed by the formula ##STR1## wherein R represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; ##STR2## represents ##STR3## or ##STR4## X and Y each represents H or a halogen atom of F or Cl and at least one of X and Y is necessarily H; and Z represents a halogen atom of F, Cl or Br.

    摘要翻译: 提供适合作为构成具有负介电各向异性的液晶组合物的组分的2-氰基-4-卤代苯基取代的苯甲酸酯和含有它们的液晶组合物的新型液晶化合物,其中苯甲酸酯由式 其中R表示1〜10个碳原子的烷基或烷氧基; 表示,X和Y各自表示H或F或Cl的卤素原子,X和Y中的至少一个必须为H; Z表示F,Cl或Br的卤素原子。