Fluorinated oligophenyls and their use in liquid crystal materials
    23.
    发明授权
    Fluorinated oligophenyls and their use in liquid crystal materials 失效
    氟化低聚物及其在液晶材料中的应用

    公开(公告)号:US5273680A

    公开(公告)日:1993-12-28

    申请号:US846750

    申请日:1992-03-09

    摘要: This invention relates to fluorinated oligophenyls of formula (I), in which a is 0 or 1 and in which the terminal substituents R.sup.1, R.sup.2 and R.sup.3 are each independently an alkyl or alkenyl residue each with up to 15 C atoms, optionally substituted by CN or by at least one halogen atom, and wherein one or more non adjacent CH.sub.2 groups of these residues may be replaced by --O--, --S--, --CO--, --O--CO--, --CO--O--, --O--CO--O-- or --C.tbd.C--, one of the residues R.sup.1 and R.sup.2 may also denote a group of formula (II), any one of the following pairs of lateral substituents are both fluorine: (A, B), (C, D), (D, E), (C, E), (B, C), (D, J), (D, K), (A, C), (C, J), (C', D'), (D', E), (D', A), (C', E), (C', A), (D', J'), (D', K'), (C', J'), (B, G), (A, G), all of the other lateral substituents being hydrogen or fluorine, and to their use as components of liquid crystalline compositions.

    摘要翻译: PCT No.PCT / EP88 / 00724 Sec。 371日期:1989年3月8日 102(e)日期1989年3月8日PCT提交1988年8月13日PCT公布。 出版物WO89 / 02425 本发明涉及式(I)的氟化低聚苯基,其中a是0或1,并且其中末端取代基R 1,R 2和R 3各自独立地为烷基或链烯基,每个具有至多15个 C原子,任选地被CN或至少一个卤素原子取代,并且其中这些残基的一个或多个非相邻的CH 2基团可以被-O - , - S - , - CO-,-O-CO-, - CO-O-,-O-CO-O-或-C 3BOND C-,残基R1和R2之一也可以表示式(II)的基团,以下对侧取代基中的任一个均为氟: (A,B),(C,D),(D,E),(C,E),(B,C),(D,J),(D,K),(A,C) ,(C',E),(C',A),(D',J'),(D',E) ',K'),(C',J'),(B,G),(A,G),所有其它横向取代基是氢或氟,并且作为液晶组合物的组分。

    Cyano-alicyclic esters in liquid crystal compositions
    25.
    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)

    Liquid crystal polymers
    28.
    发明授权
    Liquid crystal polymers 失效
    液晶聚合物

    公开(公告)号:US06180024B2

    公开(公告)日:2001-01-30

    申请号:US09254073

    申请日:1999-02-26

    IPC分类号: C09K1952

    摘要: Methods, based on the Wittig-Horner reaction, are provided for the synthesis of compounds of formula (I) where m is from 5-150, X and Y are independently selected from: CN, H, OH, COCH3, CO2H, CO2H, CO2R1, where R1 is C1-12 alkyl, NCS, SCN, CF3, CH2X where X is F, Cl, Br, OH, CHF2 and formula (IB), where J for each X and Y group is independently selected from: CH2, single covalent bond, OOC, CO2, O, CH2O, OCH2, CH2CO2, CH2OOC; p=1-20; L for each X and Y group is independently selected from: O, CH2OCO, CO2, S, NH; (a) is defined by formula (IC), where rings A, B and C are independently selected from phenyl, cyclohexyl, pyridine and pyrimidine and may be independently of each other substituted with at least one of Cl or F; linking groups A and B may be selected from single bond, CO2, OOC, CH2O, OCH2, CH2CH2, C≡C; Z is selected from CN, F, Cl, NO2, R, OR, CO2R, CF3, OOCR, NCS, SCN, where R=straight chain or branched chain alkyl and may include from 1-16 carbon atoms and including where one or more non-adjacent CH2 groups may be substituted by CH(CN), CH(CF3), CH(Cl), CH(CH3) in chiral or non-chiral form; provided that at least one of X and Y is selected from (IB); the method polymerizing a compound of general formula (II), where X and Y are defined as formula (I).

    摘要翻译: 提供了基于Wittig-Horner反应的合成式(I)化合物,其中m为5-150,X和Y独立地选自:CN,H,OH,COCH 3,CO 2 H,CO 2 H, CO 2 R 1,其中R 1是C 1-12烷基,NCS,SCN,CF 3,CH 2 X,其中X是F,Cl,Br,OH,CHF 2和式(IB),其中每个X和Y基团的J独立地选自:CH 2, 单共价键,OOC,CO 2,O,CH 2 O,OCH 2,CH 2 CO 2,CH 2 OOC; p = 1-20; 每个X和Y基团的L独立地选自:O,CH 2 OCO,CO 2,S,NH; (a)由式(IC)定义,其中环A,B和C独立地选自苯基,环己基,吡啶和嘧啶,并且可以彼此独立地被Cl或F中的至少一个取代; 连接基团A和B可以选自单键,CO 2,OOC,CH 2 O,OCH 2,CH 2 CH 2,C = C; Z选自CN,F,Cl,NO 2,R,OR,CO 2 R,CF 3,OOCR,NCS,SCN,其中R =直链或支链烷基,并且可以包括1-16个碳原子,并且包括其中一个或多个 不相邻的CH2基可以被手性或非手性形式的CH(CN),CH(CF 3),CH(Cl),CH(CH 3)取代; 条件是X和Y中的至少一个选自(IB); 聚合通式(II)的化合物的方法,其中X和Y定义为式(I)。

    Liquid crystal polymers
    29.
    发明授权
    Liquid crystal polymers 失效
    液晶聚合物

    公开(公告)号:US6030668A

    公开(公告)日:2000-02-29

    申请号:US066460

    申请日:1998-05-26

    摘要: Compounds of formula ##STR1## are provided which may be used in a variety of devices including liquid crystal devices, piezoelectric devices, pyroelectric devices and in optical recording media, where m=at least 5; and R.sub.x, R.sub.y and R.sub.z are independently from formula (IA), ##STR2## where Y is selected from COO, OCO, O, S, CHOH, CHF, CH.sub.2 ; Q=(CH.sub.2).sub.n wherein one or more non-adjacent methylenes may be replaced by O and n=1-20; Z is selected from O, S, a single covalent bond, COO, a OCO; when Y is CH.sub.2 then n may also be 0; formula (IB) is ##STR3## and represents any mesogenic group; and R.sub.x, R.sub.y and R.sub.z are also independently selected from H, OH, OCOR.sup.1, COOH, CO.sub.2 R.sup.1 (CH.sub.2).sub.p OH, (CH.sub.2).sub.p CO.sub.2 H, --(CH.sub.2).sub.p OR.sup.1 or --(CH.sub.2).sub.p CO.sub.2 R.sup.1 and p=1-20, R.sup.1 =H or C.sub.1-16 alkyl, when R.sup.1 =C.sub.2-16 alkyl the terminal CH.sub.3 group may be replaced by Br or Cl; provided that at least one of and R.sub.x, R.sub.y and R.sub.z is selected from formula (IA).

    摘要翻译: PCT No.PCT / GB96 / 02655 371日期:1998年5月26日 102(e)日期1998年5月26日PCT提交1996年10月31日PCT公布。 公开号WO97 / 16472 日期1997年5月9日提供了可用于液晶装置,压电装置,热电装置以及光记录介质的各种装置中的化合物,其中m =至少5; 并且R x,R y和R z独立地为式(IA),其中Y选自COO,OCO,O,S,CHOH,CHF,CH 2; Q =(CH 2)n,其中一个或多个不相邻亚甲基可被O代替,n = 1-20; Z选自O,S,单一共价键,COO,OCO; 当Y是CH2时,n也可以是0; 式(IB)是并代表任何介晶基团; 并且R x,R y和R z也独立地选自H,OH,OCOR 1,COOH,CO 2 R 1(CH 2)p OH,(CH 2)p CO 2 H, - (CH 2)pOR 1或 - (CH 2)p CO 2 R 1和p = H或C1-16烷基,当R1 = C2-16烷基时,末端CH3基团可被Br或Cl取代; 条件是Rx和R z中的至少一个选自式(IA)。