Liquid crystals esters
    2.
    发明授权
    Liquid crystals esters 失效
    液晶酯

    公开(公告)号:US4542230A

    公开(公告)日:1985-09-17

    申请号:US192557

    申请日:1980-09-30

    CPC分类号: C09K19/2007 C09K19/3068

    摘要: A liquid crystal ester has a structure: ##STR1## where X and Y are fluorine or hydrogen at least one being hydrogen, and Z is either:(a) ##STR2## where R.sub.2 is alkyl, alkoxy, alkylcarbonyloxy or alkoxycarbonyloxy(b) ##STR3## where R.sub.3 is an alkyl group. The ester may be prepared by a conventional esterification from the corresponding phenol ##STR4## and the corresponding acid chloride Z--COCl. The ester may be used in mixtures with other liquid crystal compounds for use in known electro-optic devices.

    摘要翻译: 液晶酯具有以下结构:其中X和Y是氟或氢,至少一个是氢,Z是:(a)其中R 2是烷基,烷氧基,烷基羰基氧基或烷氧基羰基氧基(b) IMAGE>其中R3是烷基。 酯可以通过相应的苯酚和相应的酰氯Z-COCl的常规酯化制备。 该酯可以与其它液晶化合物的混合物用于已知的电光器件中。

    Laterally cyano- and fluoro-substituted terphenyls
    3.
    发明授权
    Laterally cyano- and fluoro-substituted terphenyls 失效
    侧面氰基和氟取代的三联苯

    公开(公告)号:US5358663A

    公开(公告)日:1994-10-25

    申请号:US946773

    申请日:1992-09-18

    摘要: Laterally cyano-substituted terphenyls of formula (I), wherein R.sup.1 and R.sup.2 are independently selected from hydrogen or C.sub.1-15 alkyl, alkoxy, or alkyl or alkoxy in which one or more CH.sub.2 groups are replaced by O, COO, OOC, CHX, CX.sub.2, CH=CX, CX=CH, CX=CX, where X is fluorine or chlorine. CRCN where R is alkyl, or C.tbd.C or in which a terminal CH.sub.3 of the said alkyl or alkoxy chain is replaced by CF.sub.3, n is 0 or 1, and the CN and F (if present) substituent are independently located in any of the available substitution positions. Liquid crystal materials containing these terphenyls are also described.

    摘要翻译: PCT No.PCT / GB88 / 00880 Sec。 371日期1990年04月11日 102(e)日期1990年04月11日PCT提交1988年10月19日PCT公布。 第WO89 / 03821号公报 日本公开说明书。1989年5月5日授权。式(I)的单个氰基取代的三联苯,其中R 1和R 2独立地选自氢或C1-15烷基,烷氧基或烷基或烷氧基,其中一个或多个CH 2基团被O取代, COO,OOC,CHX,CX2,CH = CX,CX = CH,CX = CX,其中X是氟或氯。 其中R是烷基或C 3 B C或其中所述烷基或烷氧基链的末端CH 3被CF 3所取代的CRCN,n是0或1,并且CN和F(如果存在))取代基独立地位于 可用的替代职位。 还描述了含有这些三联苯的液晶材料。

    Cyano-alicyclic esters in liquid crystal compositions
    9.
    发明授权
    Cyano-alicyclic esters in liquid crystal compositions 失效
    液晶组合物中的氰基脂环酯

    公开(公告)号:US5232625A

    公开(公告)日:1993-08-03

    申请号:US877138

    申请日:1992-05-01

    摘要: Compounds suitable for use as constituents of ferroelectric smectic liquid crystal compositions, which are esters of formula (I), where R.sub.2 and R.sub.3 together represent the residue of an alicyclic hydrocarbon ring system where .degree.C. is an asymmetric carbon atom and X is a chain of up to three linked aromatic or alicyclic six-membered organic cyclic groups, laterally and/or terminally substituted. Preferred compounds have a formula (II), where R.sub.1 is alkyl or alkoxy, A, B, and D are phenyl, fluoro or chloro substituted phenyl or cyclohexyl, n is 0 or 1, Y is a bond or CH.sub.2 CH.sub.2 if n is 0, or a bond CH.sub.2 CH.sub.2 COO or COO if n is 1. Preferred groups C(CN)R.sub.2 R.sub.3 are formula (III) and (IV).

    摘要翻译: 适用于作为铁电物质液晶组合物的组分的化合物,其为式(I)的酯,其中R 2和R 3一起表示其中C为不对称碳原子且X为链的脂环族烃环体系的残基 最多三个连接的芳族或脂环族六元有机环状基团,横向和/或末端取代。 优选的化合物具有式(II),其中R 1是烷基或烷氧基,A,B和D是苯基,氟或氯取代的苯基或环己基,n是0或1,如果n是0,Y是一个键或CH 2 CH 2, 或者如果n为1,则为CH2CH2COO或COO键。优选基团C(CN)R2R3为式(III)和(IV)。