Cyano-alicyclic esters in liquid crystal compositions
    1.
    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)。

    Cyano-alicyclic esters in liquid crystal compositions
    10.
    发明授权
    Cyano-alicyclic esters in liquid crystal compositions 失效
    液晶组合物中的氰基 - 水解酯

    公开(公告)号:US5147577A

    公开(公告)日:1992-09-15

    申请号:US359790

    申请日:1989-06-01

    摘要: Compounds suitable for use as constituents of ferroelectric smectic liquid crystal compositions, which are ester of formula (I), where R.sub.2 and R.sub.3 together represent the residue of an alicyclic hydrocarbon ring system where *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). ##STR1##

    摘要翻译: 适用于作为式(I)的酯的铁电近晶液晶组合物的组分的化合物,其中R 2和R 3一起表示脂环烃环系统的残基,其中* C是不对称碳原子,X是链 最多三个连接的芳族或脂环族六元有机环状基团,横向和/或末端取代的。 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)。 (一)图像(二)<图像>(三)<图像>(四)