Ferroelectric, liquid-crystalline polymers, a process for their
preparation and their use in electrooptical components
    6.
    发明授权
    Ferroelectric, liquid-crystalline polymers, a process for their preparation and their use in electrooptical components 失效
    电解液晶聚合物,其制备方法及其在电子部件中的应用

    公开(公告)号:US5227090A

    公开(公告)日:1993-07-13

    申请号:US635134

    申请日:1990-12-27

    CPC分类号: C08F20/36 C09K19/3857

    摘要: Ferroelectric, liquid-crystaline polymers contain repeating units of the formula (I) ##STR1## in which the symbols have the following meanings: B=a group having at least one chiral center, of the formula ##STR2## in which R.sup.6, R.sup.7 and R.sup.8 are identical or different and are H, CH.sub.3, OCH.sub.3, F, Cl or Br, and at least one of the groups R.sup.6, R.sup.7 and R.sup.8 must be H and X=H, F, Cl or Br and R.sup.9 =H or C.sub.1 -C.sub.10 -alkyl,Y=H, CH.sub.3 or F,R.sup.1 =for example a straight-chain or branched alkyl having 1 to 16 carbon atomsa=2 to 20, preferably 6 to 12b, c, d, e and f=0 or 1 with the proviso that d+e+f=2 or 3A.sup.1, A.sup.2, A.sup.3 =for example, 1,4-phenylene or 2,5-pyridinediyl,M.sup.1, M.sup.2 and M.sup.3 =for example CO--O, or O--CO, andG=for example, a straight-chain or branched alkylene having 1 to 16 carbon atoms.

    摘要翻译: 铁电液晶聚合物含有式(I)< IMAGE>的重复单元,其中符号具有以下含义:B =具有至少一个手性中心的基团,具有式 其中R 6,R 7和R 8相同或不同,为H,CH 3,OCH 3,F,Cl或Br,且R 6,R 7和R 8中的至少一个必须为H且X = H,F, Cl或Br,R 9 = H或C 1 -C 10烷基,Y = H,CH 3或F,R 1 =例如具有1至16个碳原子的直链或支链烷基a = 2至20,优选6至12b ,c,d,e和f = 0或1,条件是d + e + f = 2或3 A1,A2,A3 =例如1,4-亚苯基或2,5-吡啶二基,M1,M2和 M3 =例如CO-O或O-CO,G =例如具有1至16个碳原子的直链或支链亚烷基。

    Ferroelectric liquid-crystalline polymers, a process for their
preparation and their use in electrooptical components
    10.
    发明授权
    Ferroelectric liquid-crystalline polymers, a process for their preparation and their use in electrooptical components 失效
    铁电液晶聚合物,其制备方法及其在电光元件中的应用

    公开(公告)号:US5637254A

    公开(公告)日:1997-06-10

    申请号:US412617

    申请日:1995-03-29

    摘要: A ferroelectric, liquid-crystalline polymer is composed of repeating units of the formula (I) ##STR1## in which Y=H, CH.sub.3 or F,R.sup.1 =a radical having at least two chiral centers such as for example ##STR2## a=2 to 20, preferably 6 to 12, b,c,d,e and f=0 or 1 with the proviso that d+e+f=2 or 3,A.sup.1,A.sup.2 and A.sup.3 =for example, 1,4-phenylene, cyclohexylene or 2,5-pyrimidinediyl,M.sup.2 and M.sup.3 =CO--O, O--CO, CO--S, S--CO, CH.sub.2 --O, O--CH.sub.2, and ##STR3## These liquid-crystalline polymers have short response times and resistance to mechanical stresses.They can be prepared by free-radical polymerization.

    摘要翻译: 铁电液晶聚合物由式(I)的重复单元组成,其中Y = H,CH 3或F,R 1 =具有至少两个手性中心的基团,例如 a = 2至20,优选6至12,b,c,d,e和f = 0或1,条件是d + e + f = 2或3,A1,A2和A3 =例如,1,4-亚苯基 ,亚环己基或2,5-嘧啶二基,M2和M3 = CO-O,O-CO,CO-S,S-CO,CH2-O,O-CH2和这些液晶聚合物具有较短的响应时间 和耐机械应力。 它们可以通过自由基聚合制备。