Liquid crystalline compounds and mixtures
    1.
    发明授权
    Liquid crystalline compounds and mixtures 失效
    液晶化合物和混合物

    公开(公告)号:US4652089A

    公开(公告)日:1987-03-24

    申请号:US663652

    申请日:1984-10-22

    摘要: This invention concerns compounds of the formula: ##STR1## wherein n is 1 and X is --COO--, --OOC-- or --CH.sub.2 CH.sub.2 --; or n is O and X is --CH.sub.2 CH.sub.2 --;ring A is p-phenylene or trans-1,4-cyclohexylene;R.sup.2 is cyano, p-cyanophenyl or, when X is --COO-- or --OOC--, R.sup.2 may also be p-R.sup.3 -phenyl or trans-4-R.sup.3 -cyclohexyl;and R.sup.1 and R.sup.3 each are straight-chain C.sub.1 -C.sub.10 -alkyl.their manufacture and their use for electro-optical purposes and in gas chromatography are described.

    摘要翻译: 本发明涉及下式的化合物:其中n为1且X为-COO-,-OOC-或-CH 2 CH 2 - ; 或n为O且X为-CH 2 CH 2 - ; 环A为对亚苯基或反式-1,4-亚环己基; R2是氰基,对​​氰基苯基,或当X是-COO-或-OOC-时,R 2也可以是对-R 3 - 苯基或反式-4-R 3 - 环己基; 并且R 1和R 3各自是直链C 1 -C 10 - 烷基。 描述了它们的制造及其在电光学目的和气相色谱中的用途。