Liquid-crystalline mixture of low viscosity
    9.
    发明授权
    Liquid-crystalline mixture of low viscosity 失效
    低粘度的液晶混合物

    公开(公告)号:US5271865A

    公开(公告)日:1993-12-21

    申请号:US674367

    申请日:1991-04-10

    CPC分类号: C09K19/42 C09K19/44 C09K19/46

    摘要: The invention relates to a liquid-crystalline mixture containing one or more compounds of the general formula ##STR1## in which R.sup.1 is straight-chain alkyl having 2 to 12 carbon atoms in which, in addition, one CH.sub.2 group may be replaced by --O-- or --CH.dbd.CH--, the ring A is 1,4-phenylene or trans-1,4-cyclohexylene, and r is 0 or 1, and one or more highly dielectrically positive compounds selected from the group comprising the compounds of the general formulae II, III and IV in a weight ratio between the compounds of the formula I and the compounds of the formulae II, III and IV of from 1:10 to 10:1: ##STR2## in which R.sup.2 has one of the meanings indicated for R.sup.1, and X and Y are each, independently of one another, CH or N, ##STR3## in which R.sup.2 has one of the meanings indicated for R.sup.1, and X' and Y' are CH.sub.2 or O, ##STR4## in which R.sup.2 has one of the meanings indicated for R.sup.1, r is as defined above, the rings A.sup.1 and A.sup.2 have one of the meanings indicated for A, and L is H or F.

    摘要翻译: PCT No.PCT / EP91 / 00156 Sec。 371日期:1991年4月10日 102(e)1991年04月10日PCT 1991年1月28日PCT PCT。 出版物WO91 / 12294 日本1991年8月22日。本发明涉及含有一种或多种通式“I”的化合物的液晶混合物,其中R 1是具有2至12个碳原子的直链烷基,其中另外一个 CH 2基团可以被-O-或-CH = CH-取代,环A是1,4-亚苯基或反式-1,4-亚环己基,r是0或1,并且选择一个或多个高反应性正性化合物 来自包含通式II,III和IV的化合物的组,其中式I化合物与式II,III和IV的化合物的重量比为1:10至10:1: 其中R2具有对R1表示的含义之一,X和Y各自独立地为CH或N,其中R 2具有对R 1表示的含义之一,X'和Y 是CH2或O,其中R2具有对R1表示的含义之一,r如上所定义,环A1和A2具有对A表示的含义之一,L是 H或F.