Conjugated enyne derivative and liquid crystal composition
    8.
    发明授权
    Conjugated enyne derivative and liquid crystal composition 失效
    共轭衍生物和液晶组成

    公开(公告)号:US5370819A

    公开(公告)日:1994-12-06

    申请号:US149942

    申请日:1993-11-10

    摘要: A novel, conjugated enyne compound expressed by the following formula (I), which has superior characteristics as an L.C. material and is stable under a usually used environment, and a L.C. composition containing the same are provided: ##STR1## wherein A is 1,4-phenylene or 1,4-cyclohexylene; B, C and D are 1,4-phenylene, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, pyridine-2,5-diyl or 1,3-pyrimidine-2,5-diyl; L and M are covalent bond, 1,2-ethylene, oxycarbonyl, carbonyloxy, 1,2-ethenylene, 1,2-ethynylene, oxymethylene or methyleneoxy; n, m and l are 0 or 1; X and Z are H or F; R is fluoroalkyl, alkyl, alkoxy, alkoxyalkyl or alkenyl; Y is alkyl, alkoxy, cyano, halogen, cyanate, alkyl or alkoxy having at least one H replaced by halogen; when n is 0, L is covalent bond; when m or n is 0, M is covalent bond; and m, n and l are not simultaneously 0,the compound having a broad L.C. range, a low viscosity and a suitable .DELTA.n, and being applied to various uses, and reducing the viscosity of L.C. composition containing the same and enlarging the L.C. operation range.

    摘要翻译: 一种由下式(I)表示的新型共轭烯化合物,其具有优异的特征,如L.C. 材料,在通常使用的环境下是稳定的,而L.C. 提供含有它们的组合物:其中A是1,4-亚苯基或1,4-亚环己基; B,C和D是1,4-亚苯基,1,4-亚环己基,1,3-二恶烷-2,5-二基,吡啶-2,5-二基或1,3-嘧啶-2,5-二基; L和M是共价键,1,2-亚乙基,氧羰基,羰基氧基,1,2-亚乙烯基,1,2-亚乙炔基,甲醛或亚甲氧基; n,m和l为0或1; X和Z是H或F; R为氟烷基,烷基,烷氧基,烷氧基烷基或烯基; Y是具有至少一个H被卤素取代的烷基,烷氧基,氰基,卤素,氰酸酯,烷基或烷氧基; 当n为0时,L为共价键; 当m或n为0时,M为共价键; 并且m,n和l不同时为0,该化合物具有宽L. 范围,低粘度和合适的DELTA n,并适用于各种用途,并降低L.C.的粘度。 含有相同的物质并扩大L.C. 操作范围

    Liquid crystalline compound containing fluorine atom substituted alkyl
group(s) and a liquid crystal composition
    10.
    发明授权
    Liquid crystalline compound containing fluorine atom substituted alkyl group(s) and a liquid crystal composition 失效
    含氟原子取代的烷基的液晶化合物和液晶组合物

    公开(公告)号:US5702641A

    公开(公告)日:1997-12-30

    申请号:US576461

    申请日:1995-12-21

    摘要: A liquid crystalline compound exhibiting a large .DELTA..epsilon. value, an electrical and chemical stability and a superior compatibility with existing liquid crystalline compounds, a liquid crystal composition containing the same, and a liquid crystal display element constructed by using the composition are provided, which liquid crystalline compound is expressed by the formula (I), F--(CH.sub.2)n-E--(CH.sub.2 CH.sub.2).sub.k --G--(CH.sub.2 CH.sub.2).sub.l --L--(CH.sub.2 CH.sub.2).sub.m --Z--Q--Y (I) wherein n is an integer of 1 to 10; k, l and m each independently are an integer of 0 to 2; ring E is 1,4-cyclohexylene group or 1,4-phenylene group, wherein one or more H atoms on each six-membered ring may be replaced by F atom(s); G and L each independently is a covalent bond or 1,4-cyclohexylene group or 1,4-phenylene group, wherein one or more H atoms on each six-membered ring may be replaced by F atom(s); Q is covalent bond or --O--; Y is a fluoroalkyl group of 1 to 3C or F atom; but in the case where ring E is 1,4-cyclohexylene group and at least one of G and L is covalent bond, k+l+m.noteq.0, and in the case where Q is --O--, Y is not F atom.

    摘要翻译: 提供了具有大的DELTAε值,电化学稳定性和与现有液晶化合物的优异相容性的液晶化合物,含有该液晶化合物的液晶组合物和使用该组合物构成的液晶显示元件,该液体 结晶化合物由式(I)表示,F-(CH2)nE-(CH2CH2)kG-(CH2CH2)lL-(CH2CH2)mZQY(I)其中n是1至10的整数; k,l和m各自独立地为0〜2的整数; 环E是1,4-亚环己基或1,4-亚苯基,其中每个六元环上的一个或多个H原子可被F原子取代; G和L各自独立地为共价键或1,4-亚环己基或1,4-亚苯基,其中每个六元环上的一个或多个H原子可被F原子取代; Q是共价键或-O-; Y为1〜3或氟原子的氟代烷基; 但是在环E为1,4-亚环己基并且G和L中的至少一个为共价键的情况下,k + 1 + m为“0”,在Q为-O-的情况下,Y为F原子 。