Liquid-crystalline copolymer, process for the preparation of the same,
diene compound used for the preparation of the same and process for the
preparation of the diene compound
    94.
    发明授权
    Liquid-crystalline copolymer, process for the preparation of the same, diene compound used for the preparation of the same and process for the preparation of the diene compound 失效
    液晶共聚物,其制备方法,用于制备其的二烯化合物和二烯化合物的制备方法

    公开(公告)号:US5281685A

    公开(公告)日:1994-01-25

    申请号:US838242

    申请日:1992-03-05

    摘要: A liquid-crystalline copolymer comprising the repeating units represented by the following general formulas ##STR1## wherein each of r and p is an integer of 2 to 5, q is an integer of 0 to 3, m is an integer of 1 to 20, and R.sup.1 is ##STR2## R.sup.2 being --COOR.sup.3, --OR.sup.3 or --OCOR.sup.3, R.sup.3 being ##STR3## each of R.sup.4 and R.sup.5 being --CH.sub.3 or a halogen atom, each of a and d being an integer of 0 to 10, b being an integer of 0 or 1, with the proviso that d is not 0 when R.sup.5 is --CH.sub.3,the repeating units [I] and [II] being present in the liquid-crystalline copolymer in a substantial molar ratio [I]:[II] of 1:1, exhibits ferroelectricity even at a temperature neighboring room temperature and having a high response speed to changes of external electric fields.

    摘要翻译: PCT No.PCT / JP91 / 00859 Sec。 371日期:1992年3月5日 102(e)1992年3月5日PCT PCT 1991年6月26日PCT公布。 出版物WO92 / 01731 日本1992年6月2日。一种液晶共聚物,其包含由以下通式表示的重复单元(* CHEMICAL STRUCTURE *)(1)和(*化学结构*)(II),其中r和p各自为整数 2〜5,q为0〜3的整数,m为1〜20的整数,R1为(*化学结构*)(*化学结构*)(*化学结构*)(*化学结构*) (*化学结构*)(*化学结构*)或(*化学结构*)R2为-COOR3,-OR3或-OCOR3,R3为(*化学结构*),R4和R5各自为 -CH 3或卤素原子,a和d各自为0〜10的整数,b为0或1的整数,条件是当R 5为-CH 3时d为0,重复单元(I)和 (II)以1:1的实质摩尔比(I):(II)存在于液晶共聚物中,即使在邻近室温的温度下也具有高铁电性,并且对e的变化具有高响应速度 外部电场。

    Liquid-crystalline compounds and liquid-crystalline polymers
    96.
    发明授权
    Liquid-crystalline compounds and liquid-crystalline polymers 失效
    液晶化合物和液晶聚合物

    公开(公告)号:US5243065A

    公开(公告)日:1993-09-07

    申请号:US963904

    申请日:1992-10-20

    摘要: A liquid-crystalline polymer having the repeating units represented by the following general formula (II): ##STR1## wherein R.sup.1 is ##STR2## wherein a is an integer having a value of 1 to 10,b is an integer having a value of 0 or 1,c is an integer having a value of 1 to 30,X.sup.1 is --COO--, --O-- or a single bond,M.sup.1 is ##STR3## and d is an integer having a value of 1 to 5.The liquid-crystalline polymer exhibits ferroelectricity in a wide temperature range including room temperature and has a high speed of response to electric field.

    摘要翻译: 具有由以下通式(II)表示的重复单元的液晶聚合物:其中R 1为,其中a为1至10的整数,b为具有 值为0或1,c为1至30的整数,X1为-COO-,-O-或单键,M1为 IMAGE> ,d为1〜5的整数。液晶聚合物在室温下具有宽的温度范围内的铁电性,并具有高电场响应速度。