Liquid crystalline mixtures having a chiral tilted smectic phase
    64.
    发明授权
    Liquid crystalline mixtures having a chiral tilted smectic phase 失效
    具有手性倾斜近晶相的液晶混合物

    公开(公告)号:US5486310A

    公开(公告)日:1996-01-23

    申请号:US198669

    申请日:1994-02-18

    摘要: Optically active compounds of the formula ##STR1## wherein rings A, B and C each independently are unsubstituted or each are 1,4-phenylene substituted with at least one of halogen-, cyano-, methyl- or methoxy in which optionally 1 CH group or 2 CH groups is/are replaced by nitrogen; R.sup.1 is a radical of an optically active terpene alcohol after cleavage of the hydroxy group or a group --(CH.sub.2).sub.m --C*HX.sup.1 --R.sup.3 ; R.sup.2 is a radical of an optically active terpene alcohol after cleavage of the hydroxy group or a group --(CH.sub.2).sub.n --C*HX.sup.2 --R.sup.4 ; m and n each independently stand for the number 0 or 1: C* denotes a chiral carbon atom; X.sup.1 and X.sup.2 each independently are fluorine, chlorine, cyano, methyl or methoxy; R.sup.3 and R.sup.4 each independently denote a group R, phenyl or phenyl substituted with R, with the proviso that R.sup.3 is different from X.sup.1 and R.sup.4 is different from X.sup.2 ; R is an alkyl group in which optionally one methylene group is replaced by oxygen and/or optionally one group CH--CH is replaced by a group C.dbd.C; with the proviso that R.sup.1 and R.sup.2 are not simultaneously 2-alkyl when rings A, B and C together are p-terphenyl,as well as liquid crystalline mixtures and their use for electro-optical purposes.

    摘要翻译: 式I的光学活性化合物其中环A,B和C各自独立地是未取代的或各自是被至少一个卤素,氰基,甲基或甲氧基取代的1,4-亚苯基,其中任选地1个CH 基团或2个CH基团被氮取代; R1是羟基或 - (CH2)m-C * HX1-R3基团裂解后的光学活性萜烯醇基团; R2是羟基或 - (CH2)n-C * HX2-R4基团裂解后的光学活性萜烯醇基团; m和n各自独立代表数字0或1:C *表示手性碳原子; X1和X2各自独立地为氟,氯,氰基,甲基或甲氧基; R3和R4各自独立地表示基团R,苯基或被R取代的苯基,条件是R3不同于X1,R4不同于X2; R是一个烷基,其中任选的一个亚甲基被氧代替,和/或任选一个CH-CH被C = C组取代; 条件是当环A,B和C一起是对三联苯时,R1和R2不同时为2-烷基,以及液晶混合物及其用于电光目的。

    Cyclohexyl alkenoate compounds
    65.
    发明授权
    Cyclohexyl alkenoate compounds 失效
    环烯基烯酸酯化合物

    公开(公告)号:US5380462A

    公开(公告)日:1995-01-10

    申请号:US140350

    申请日:1993-10-20

    摘要: Compounds having the Formula: ##STR1## wherein R.sup.1 denotes an alkenyl group;A.sup.1 and A.sup.2 each independently represent 1,4-phenylene, which is unsubstituted or substituted with halogen and in which, when it is unsubstituted, optionally 1 or 2 CH group(s) is/are replaced by nitrogen, or trans-1,4-cyclohexylene or trans-1,3-dioxane-2,5-diyl;Z.sup.1 and Z.sup.2 each independently signify a single covalent bond, --CH.sub.2 CH.sub.2 --, --COO--, --OOC--, --OCH.sub.2 --, --CH.sub.2 O--, --C.dbd.C--, --(CH.sub.2).sub.4 --, --O(CH.sub.2).sub.3 --, --(CH.sub.2).sub.3 O-- or the trans form of --OCH.sub.2 CH.dbd.CH--, --CH.dbd.CHCH.sub.2 O--, --(CH.sub.2).sub.2 CH.dbd.CH-- or --CH.dbd.CH(CH.sub.2).sub.2 --;n is either 0, 1 or 2; andR.sup.2 is halogen, cyano or alkyl with 1 to 12 carbon atoms, which is optionally substituted with fluorine and in which optionally 1 --CH.sub.2 -- group or 2 non-adjacent --CH.sub.2 -- groups is/are replaced by oxygen, --COO--, --OOC--, --CO-- and/or a --CH.sub.2 --CH.sub.2 -- group is replaced by --CH.dbd.CH--,are useful in electro-optical applications. Liquid crystalline mixtures containing such compounds are especially suitable for use in commercial applications, such as electro-optic cells.

    摘要翻译: 具有下式的化合物:其中R 1表示烯基; A1和A2各自独立地表示1,4-亚苯基,其未被取代或被卤素取代,并且其中当未被取代时,任选地1或2个CH基团被氮取代,或反式-1,4 环己基或反式-1,3-二恶烷-2,5-二基; Z 1和Z 2各自独立地表示单个共价键,-CH 2 CH 2 - , - COO - , - OOC-, - OCH 2 - , - CH 2 O - , - C≡C - , - (CH 2)4 - , - O - (CH 2)3 O-或-OCH 2 CH = CH-,-CH = CHCH 2 O - , - (CH 2)2 CH = CH-或-CH = CH(CH 2)2 - 的反式; n是0,1或2; 并且R 2是卤素,氰基或具有1至12个碳原子的烷基,其任选被氟取代,并且其中任选地1个-CH 2 - 基团或2个不相邻的-CH 2 - 基团被氧,-COO-, -OOC-,-CO-和/或-CH 2 -CH 2 - 基团被-CH = CH-取代,可用于电光学应用。 含有这些化合物的液晶混合物尤其适用于商业应用,如电光电池。

    Liquid crystals
    68.
    发明授权
    Liquid crystals 失效
    液晶

    公开(公告)号:US5238602A

    公开(公告)日:1993-08-24

    申请号:US53778

    申请日:1987-05-26

    摘要: Compounds of the formula ##STR1## wherein n stands for the number 0 or 1; the rings A.sup.1, A.sup.2 and A.sup.3 represent 1,4-phenylene, 2-fluoro-1,4-phenylene or trans-1,4-cyclohexylene or one of these rings also represents a 2,5-disubstituted pyrimidine ring or a trans-2,5-disubstituted m-dioxane ring; X.sup.1 represents a single covalent bond, --COO--, --OOC--, --CH.sub.2 CH.sub.2 --, p--C.sub.6 H.sub.4 --, --CH.sub.2 CH.sub.2 --p-- C.sub.6 H.sub.4 --, --CH.sub.2 CH.sub.2 --p--C.sub.6 H.sub.4 --CH.sub.2 CH.sub.2 -- or, insofar as the rings A.sup.1 and A.sup.2 represent 1,4-phenylene, also --NON--; R.sup.2 represents 1E-alkenyl, 2Z-alkenyl, 3E-alkenyl, 4-alkenyl or alkenyloxy, with the proviso that the oxygen atom in alkenyloxy is linked with a saturated carbon atom; and R.sup.1 signifies 1E-alkenyl, 2Z-alkenyl, 3E-alkenyl, 4-alkenyl or, insofar as R.sup.2 represents alkenyloxy, also alkyl, their manufacture, as well as liquid crystalline mixtures and the use for electro-optical purposes.

    摘要翻译: 式(Ⅰ)的化合物,其中n代表数字0或1; 环A1,A2和A3表示1,4-亚苯基,2-氟-1,4-亚苯基或反式-1,4-亚环己基,或这些环中的一个也表示2,5-二取代的嘧啶环或反式-1,4-亚环己基, 2,5-二取代的m-二恶烷环; X1表示单个共价键,-COO-,-OOC-,-CH2CH2-,p-C6H4-,-CH2CH2-p- C6H4-,-CH2CH2-p-C6H4-CH2CH2-或只要环A1和A2 代表1,4-亚苯基,也可以是-NON-; R2代表1E-烯基,2Z-烯基,3E-烯基,4-烯基或烯氧基,条件是烯氧基中的氧原子与饱和碳原子连接; 并且R 1表示1E-烯基,2Z-烯基,3E-链烯基,4-链烯基,或者,R 2表示烯氧基,也可以是烷基,它们的制备以及液晶混合物以及电光目的用途。

    Liquid crystalline esters
    70.
    发明授权
    Liquid crystalline esters 失效
    液晶酯

    公开(公告)号:US4830470A

    公开(公告)日:1989-05-16

    申请号:US52659

    申请日:1987-05-20

    CPC分类号: C07C255/00 C09K19/3068

    摘要: Compounds of the formula ##STR1## wherein m represents is the number 0 or 1; A is a single covalent bond, --CH.sub.2 --CH.sub.2 --, --OCH.sub.2 --, --COO-- or --OOC--; rings B, C and D are 1,4-phenylene optionally substituted with cyano, halogen or lower alkyl; Y.sup.1 and Y.sup.2 are hydrogen or one of them also is cyano; and R.sup.1 and R.sup.2 each represents C.sub.1 -C.sub.18 -alkyl or C.sub.2 -C.sub.18 alkenyl, either of which is optionally halogen-substituted, in which one CH.sub.2 group or two non-adjacent CH.sub.2 groups is/are optionally replaced by oxygen; with the provisos that at least one of R.sup.1 and R.sup.2 has a chiral carbon atom or a C--C double bond or both when A is --COO-- and at least one of R.sup.1 and R.sup.2 has a C--C double bond when A is a single covalent bond, their preparation, liquid crystalline mixtures containing these compounds and their use for electro-optical purposes are described.

    摘要翻译: 式(Ⅰ)化合物其中m代表0或1; A是单个共价键,-CH 2 -CH 2 - , - OCH 2 - , - COO-或-OOC-; 环B,C和D是任选被氰基,卤素或低级烷基取代的1,4-亚苯基; Y1和Y2是氢或其中之一也是氰基; 并且R 1和R 2各自表示任选被卤素取代的C 1 -C 18 - 烷基或C 2 -C 18烯基,其中一个CH 2基团或两个不相邻的CH 2基团任选被氧代替; 条件是当A是-COO-时,R 1和R 2中的至少一个具有手性碳原子或CC双键,当A是单个共价键时,R 1和R 2中的至少一个具有CC双键, 描述了它们的制备方法,含有这些化合物的液晶混合物及其用于电光学目的的用途。