Fluorinated oxaanthracenes and their use in liquid-crystal mixtures
    41.
    发明授权
    Fluorinated oxaanthracenes and their use in liquid-crystal mixtures 有权
    氟化氧杂蒽及其在液晶混合物中的应用

    公开(公告)号:US06887533B2

    公开(公告)日:2005-05-03

    申请号:US10808147

    申请日:2004-03-24

    摘要: Compounds of the formula (I) where: X1 is H or F G1-G2 is —CH2—CH— or CH═C— R1, R2 are a) H b) the M2-A2-R5 moiety c) for example, a straight-chain or branched alkyl radical having from 1 to 16 carbon atoms R3 and R4 are each, for example, H, the M2-A2-R5 moiety or a straight-chain or branched alkyl or alkyloxy radical having from 1 to 16 carbon atoms A2 is, for example, 1,4-phenylene, with the provisos that a) when R2 is not H, R1 and R3 have to be H, b) when R2 is H, R4 must not have the definitions c) or d), c) R1, R2, R3 and R4 must not at the same time be H.

    摘要翻译: 式(I)的化合物其中:X 1是H或FG 1 -G 2 O 2是-CH 2 > -CH-或CH-C-R 1,R 2是a)H b)M 2 - c)例如,具有1至16个碳原子的直链或支链烷基R 3和R 4 各自为例如H,M 2 -OR 2 -OR 5部分或直链或支链的 具有1至16个碳原子的烷基或烷氧基是例如1,4-亚苯基,条件是a)当R 2不为H时 R 1和R 3必须是H,b)当R 2是H时,R 4必须 没有定义c)或d),c)R 1,R 2,R 3和R 4, >不能同时被H.

    Fluorinated cyclopenta[a]naphthalenes and their use in liquid-crystal mixtures
    42.
    发明授权
    Fluorinated cyclopenta[a]naphthalenes and their use in liquid-crystal mixtures 有权
    氟化环戊二烯[a]萘及其在液晶混合物中的应用

    公开(公告)号:US06737125B2

    公开(公告)日:2004-05-18

    申请号:US10242128

    申请日:2002-09-12

    IPC分类号: C09K1932

    摘要: Compounds of the formula (I), liquid-crystal mixtures comprising these compounds, and their use in liquid-crystal displays: in which R1 is H, F, CF3, OCF3, OCF2H, OCFH2, an alkyl radical or alkyloxy radical or an alkenyl radical or alkenyloxy radical; R2 is H, an alkyl radical or alkyloxy radical or an alkenyl radical or alkenyloxy radical M1 is —C(═O)O—, —OC(═O)—, —CH2O—, —OCH2—, —OCF2—, —CF2O—, —C≡C—, —CH2CH2—, —CF2CF2—, —CF═CFC(═O)O— or a single bond M2 is —C(═O)O—, —OC(═O)—, —CH2O—, —OCH2—, —CH2CH2—, —CF2CF2— or a single bond; A1 and A2 are &agr;-1,4-diyl, unsubstituted or mono- or disubstituted by F; where &agr; is: phenylene, cyclohexane, 1-cyclohexene or 1,3-dioxane-2,5-diyl; m and n are zero or 1; m+n=0 or 1 L1, L2, L3, L4 and L5 are H or F.

    摘要翻译: 式(I)化合物,包含这些化合物的液晶混合物及其在液晶显示器中的用途:其中R 1是H,F,CF 3,OCF 3,OCF 2 H,OCF 2 H,烷基或烷氧基或其 烯基或烯氧基; R 2是H,烷基或烷氧基或链烯基或烯氧基自由基M 1是-C(= O)O-,-OC(= O) - , - CH 2 O - , - OCH 2 - , - OCF 2 - , - CF 2 O-,-C = C - , - CH 2 CH 2 - , - CF 2 CF 2 - , - CF = CFC(= O)O-或单键M 2是-C O)O-,-OC(= O) - , - CH 2 O - , - OCH 2 - , - CH 2 CH 2 - , - CF 2 CF 2 - 或单键; A 1和A 2是α-1,4-二 F未取代或单取代或二取代; 其中α是:亚苯基,环己烷,1-环己烯或1,3-二恶烷-2,5-二基; m和n是0或1; m + n = 0或1L 1,L 2,L 3,L 4和L 5为H或F.

    1,8-Difluorisoquinoline derivatives and the use thereof in liquid
crystalline mixtures
    44.
    发明授权
    1,8-Difluorisoquinoline derivatives and the use thereof in liquid crystalline mixtures 失效
    1,8-二氟异喹啉衍生物及其在液晶混合物中的应用

    公开(公告)号:US5882546A

    公开(公告)日:1999-03-16

    申请号:US930106

    申请日:1997-11-06

    摘要: 1,8-Difluoroisoquinoline derivatives of the formula (I)R.sup.1 (--M.sup.1).sub.a (--A.sup.1 --M.sup.2).sub.b (--A.sup.2 --M.sup.3).sub.c --B(--M.sup.4 --A.sup.3).sub.d (--M.sup.5 --A.sup.4).sub.e (--M.sup.6).sub.f --R.sup.2 (I)in which the symbols and indices have the following meanings: the group B is ##STR1## R.sup.1 and R.sup.2 are, for example, alkyl radicals having 1 to 20 carbon atoms;M.sup.1, M.sup.2, M.sup.3, M.sup.4, M.sup.5 and M.sup.6 are, for example, --O--, --CO--O--, --O--CO-- or a single bond;A.sup.1, A.sup.2, A.sup.3 and A.sup.4 are, for example, 1,4-phenylene, pyrimidine-2,5-diyl or trans-1,4-cyclohexylene, anda, b, c, d, e and f are zero or one, with the proviso that the sum of b, c, d and e is 0, 1 or 2.The compounds of the formula (I) are colorless in the pure state and generally form liquid-crystalline mesophases in a temperature range which is favorably located for electro-optical use. They are stable chemically, thermally and to light.

    摘要翻译: PCT No.PCT / EP96 / 01996 371日期:1997年11月6日 102(e)日期1997年11月6日PCT提交1996年5月10日PCT公布。 公开号WO96 / 35676 日期:1961年11月14日8-式(I)的二氟异喹啉衍生物R1(-M1)a(-A1-M2)b(-A2-M3)cB(-M4-A3)d(-M5-A4) e(-M6)f-R2(I)其中符号和指数具有以下含义:组B为R 1和R 2为例如具有1至20个碳原子的烷基; M1,M2,M3,M4,M5和M6是例如-O - , - CO-O-,-O-CO-或单键; A1,A2,A3和A4是例如1,4-亚苯基,嘧啶-2,5-二基或反-1,4-亚环己基,a,b,c,d,e和f分别为零或一个 ,条件是b,c,d和e的和为0,1或2.式(I)的化合物在纯状态下是无色的,并且通常在有利的温度范围内形成液晶中间相 位于电光学使用。 它们在化学,热和光下都是稳定的。

    4-hydroxy-2,3,5-trifluorobenzoic acid and a process for its preparation
    46.
    发明授权
    4-hydroxy-2,3,5-trifluorobenzoic acid and a process for its preparation 失效
    4-羟基-2,3,5-三氟苯甲酸及其制备方法

    公开(公告)号:US5446198A

    公开(公告)日:1995-08-29

    申请号:US167428

    申请日:1993-12-15

    CPC分类号: C07C65/03

    摘要: The present invention relates to the novel compound 4-hydroxy-2,3,5-trifluorobenzoic acid and to a process for preparing this novel substance by reacting 2,3,4,5-tetrafluorobenzoic acid at elevated temperature with a basic compound dissolved and/or suspended in water, adding, if desired, a fluoride scavenger, bringing the resulting reaction mixture to a pH of 0 to 6 by addition of an acid, and isolating the 4-hydroxy-2,3,5-trifluorobenzoic acid formed.

    摘要翻译: 本发明涉及新型化合物4-羟基-2,3,5-三氟苯甲酸,以及通过使2,3,4,5-四氟苯甲酸在升高的温度下与溶解的碱性化合物反应制备该新物质的方法, /或悬浮在水中,如果需要,加入氟化物清除剂,通过加入酸将所得反应混合物的pH调至0至6,并分离形成的4-羟基-2,3,5-三氟苯甲酸。

    Cyclohexylphenylpyrimidines, process for their preparation, and their
use in liquid-crystalline mixtures
    47.
    发明授权
    Cyclohexylphenylpyrimidines, process for their preparation, and their use in liquid-crystalline mixtures 失效
    环己基苯基嘧啶,其制备方法及其在液晶混合物中的应用

    公开(公告)号:US5439612A

    公开(公告)日:1995-08-08

    申请号:US932065

    申请日:1992-08-19

    摘要: Cyclohexylphenylpyrimidines of the formula (I) ##STR1## in which R.sup.1 is straight-chain or branched, chiral or achiral alkyl or alkenyl having 2 to 16 carbon atoms, in which one or two nonadjacent --CH.sub.2 -- groups may be replaced by --0--, --S--, --CO--, --COO--, --OCO--, --Si(CH.sub.3).sub.2 -- or --C(CH.sub.3).sub.2 --, and in which one or more hydrogen atoms of the alkyl or alkenyl radical may be replaced by fluorine atoms, and in which the terminal CH.sub.3 group of the alkyl may also be replaced by ##STR2## R.sup.2 is straight-chain or branched, chiral or achiral alkyl having 1 to 10 carbon atoms,are particularly suitable components for ferroelectric liquid-crystal mixtures since they result in favorable properties, such as, for example, high contrast, when used in electrooptical switching and display devices.

    摘要翻译: 式(I)的环己基苯基嘧啶其中R 1是直链或支链的,具有2至16个碳原子的手性或非手性烷基或烯基,其中一个或两个不相邻的-CH 2 - 基团可以被 -O - , - S - , - CO-,-COO-,-OCO-,-Si(CH 3)2 - 或-C(CH 3)2 - ,其中烷基或烯基的一个或多个氢原子 可以被氟原子代替,并且其中烷基的末端CH 3基团也可以被R 2代替是直链或支链的,具有1-10个碳原子的手性或非手性烷基是铁电体的特别合适的组分 液晶混合物,因为它们在用于电光切换和显示装置时产生良好的性能,例如高对比度。

    Liquid-crystalline, 1-substituted piperidine-4-carboxylic acid esters
    49.
    发明授权
    Liquid-crystalline, 1-substituted piperidine-4-carboxylic acid esters 失效
    液晶,1-取代的哌啶-4-甲酸酯

    公开(公告)号:US4968798A

    公开(公告)日:1990-11-06

    申请号:US289229

    申请日:1988-12-22

    CPC分类号: C09K19/3483

    摘要: Liquid-crystalline, 1-substituted piperidine-4-carboxylic acid esters, process for their preparation, and their use in liquid-crystalline mixturesThe novel 1-substituted piperidine-4-carboxylic acid esters of the general formula (I) ##STR1## are liquid-crystalline and exhibit, in particular, S.sub.c or S.sub.c * phases. In this formula, R.sup.1 or R.sup.2 is a radical of the general formula (II) ##STR2## in which the rings are aromatic, heteroaromatic or optionally heteratom-containing cycloaliphatic molecular components, such as 1,4-phenylene, pyrimidine-2,5-diyl or trans-1,4-cyclohexylene, which are linked via a single bond (in the case where n and p=zero) or via functional groups Z.sub.1 or Z.sub.2 such as CO- or CH.sub.2 -O, and in which k, n, m, p and q are zero or 1, where k+m+p is at least 1 and p=zero when m=zero. The other radical R.sup.1 or R.sup.2 is an optionally substituted straight-chain or branched alkyl group having 1 to 20 carbon atoms, X.sub.1 denotes, S, phenylenoxy or CH.sub.2, and X.sub.2 denotes O or phenylenoxy.

    摘要翻译: 液晶,1-取代的哌啶-4-羧酸酯,其制备方法及其在液晶混合物中的应用将通式(I)的新的1-取代的哌啶-4-甲酸酯 (I)是液晶的,并且特别表现出Sc或Sc *相。 在该式中,R 1或R 2是通式(II)的基团(II),其中环是芳族的,杂芳族的或任选的含杂原子的脂环族分子组分,例如1,4-亚苯基,嘧啶 - 通过单键(在n和p = 0的情况下)或通过官能团Z 1或Z 2如CO-或CH 2 -O连接的2,5-二基或反式-1,4-亚环己基,以及 其中k,n,m,p和q为零或1,其中当m = 0时,k + m + p至少为1,p = 0。 另一个基团R 1或R 2是任选取代的具有1至20个碳原子的直链或支链烷基,X 1表示S,苯基氧基或CH 2,X 2表示O或亚苯氧基。