Nematic compounds and mixtures
    1.
    发明授权

    公开(公告)号:US4001137A

    公开(公告)日:1977-01-04

    申请号:US589916

    申请日:1975-06-24

    IPC分类号: C09K19/20 G02F1/13 C09K3/34

    CPC分类号: C09K19/2007

    摘要: Compounds of the general formula ##STR1## wherein n is 0, 1 or 2, R.sub.1 is straight-chain alkyl or alkoxy of 1-7 carbon atoms or straight-chain alkanoyloxy of 2-7 carbon atoms, and R.sub.2 is straight-chain alkyl or alkoxy of 1-7 carbon atoms with the proviso that when n is 0, R.sub.1 and R.sub.2 together contain at least 4 carbon atoms, which form nematic phases, can be produced by reacting a phenol of the general formula ##STR2## WHEREIN R.sub.2 has the values given above, and p is 0, 1 or 2 or a corresponding phenolate, with an aromatic carboxylic acid of the general formula ##STR3## WHEREIN R.sub.1 has the values given above, and q is 0, 1 or 2, and the sum p + q is n, or with a reactive derivative of this acid.

    Nematic compounds and mixtures
    3.
    发明授权
    Nematic compounds and mixtures 失效
    向列化合物和混合物

    公开(公告)号:US4002670A

    公开(公告)日:1977-01-11

    申请号:US277502

    申请日:1972-08-03

    CPC分类号: C09K19/2007 C09K2019/2035

    摘要: Compounds of the general formula ##STR1## wherein n is 0, 1 or 2, R.sub.1 is straight-chain alkyl or alkoxy of 1-7 carbon atoms or straight-chain alkanoyloxy of 2-7 carbon atoms, and R.sub.2 is straight-chain alkyl or alkoxy of 1-7 carbon atoms with the proviso that when n is 0, R.sub.1 and R.sub.2 together contain at least 4 carbon atoms, which form nematic phases, can be produced by reacting a phenol of the general formula ##STR2## wherein R.sub.2 has the values given above, and p is 0, 1 or 2 or a corresponding phenolate, with an aromatic carboxylic acid of the general formula ##STR3## wherein R.sub.1 has the values given above, and q is 0, 1 or 2, and the sum p + q is n, or with a reactive derivative of this acid.

    摘要翻译: 通式为“IMAGE”的化合物,其中n为0,1或2,R1为1-7个碳原子的直链烷基或烷氧基或2-7个碳原子的直链烷酰氧基,R2为直链烷基 或1-7个碳原子的烷氧基,条件是当n为0时,R 1和R 2一起含有至少4个形成向列相的碳原子,可以通过使通式为“ 上述给出的值,p为0,1或2,或相应的酚盐,其中通式为“IMAGE”的芳族羧酸,其中R1具有上述给出的值,q为0,1或2, p + q是n,或与该酸的反应性衍生物反应。

    Nematic compounds and mixtures
    4.
    发明授权
    Nematic compounds and mixtures 失效
    向列化合物和混合物

    公开(公告)号:US4012434A

    公开(公告)日:1977-03-15

    申请号:US625550

    申请日:1975-10-24

    CPC分类号: C09K19/2007

    摘要: Compounds of the general formula ##STR1## wherein n is 0, 1 or 2, R.sub.1 is straight-chain alkyl or alkoxy of 1-7 carbon atoms or straight-chain alkanoyloxy of 2-7 carbon atoms, and R.sub.2 is straight-chain alkyl or alkoxy of 1-7 carbon atoms with the proviso that when n is 0, R.sub.1 and R.sub.2 together contain at least 4 carbon atoms, which form nematic phases, can be produced by reacting a phenol of the general formula ##STR2## WHEREIN R.sub.2 has the values given above, and p is 0, 1 or 2 or a corresponding phenolate, with an aromatic carboxylic acid of the general formula ##STR3## WHEREIN R.sub.1 has the values given above, and q is 0, 1 or 2, and the sum p + q is n, or with a reactive derivative of this acid.

    摘要翻译: 通式为“IMAGE”的化合物,其中n为0,1或2,R1为1-7个碳原子的直链烷基或烷氧基或2-7个碳原子的直链烷酰氧基,R2为直链烷基 或1-7个碳原子的烷氧基,条件是当n为0时,R 1和R 2一起含有至少4个碳原子,形成向列相,可以通过使具有下列通式的酚: 上述给出的值,p为0,1或2,或相应的酚盐,其中通式为“IMAGE”的芳香族羧酸具有上述给出的值,q为0,1或2, p + q是n,或与该酸的反应性衍生物反应。

    Modified nematic mixtures with positive dielectric anisotropy
    7.
    发明授权
    Modified nematic mixtures with positive dielectric anisotropy 失效
    具有正电介质异相性的改性极性混合物

    公开(公告)号:US4011173A

    公开(公告)日:1977-03-08

    申请号:US461653

    申请日:1974-04-17

    IPC分类号: C09K19/42 C09K3/34 G02F1/13

    CPC分类号: C09K19/42

    摘要: Nematic mixtures on the basis of derivatives of azoxybenzene and/or the phenyl ester of benzoic acid, containing at least one compound of the general formulaX -- R -- Ywherein X represents straight-chain alkyl of 4-9 carbon atoms or dialkylamino of 2-4 carbon atoms, Y represents cyano, nitro, or trifluoromethyl, and R represents a divalent group of the Formula 2a, 2b, 2c, or 2d: ##STR1## AND OPTIONALLY ADDITIONALLY ONE OR MORE COMPOUNDS OF Formula 3 ##STR2## wherein R.sub.1 and R.sub.2 represent alkyl or alkoxy of 1-8 carbon atoms, possess a positive dielectric anisotropy and are advantageously utilized as dielectrics in liquid/crystal cells with homogeneous orientation.