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182 条记录 (耗时 0.038 秒)

    Liquid crystalline medium and liquid crystal display
    95.
    发明申请
    Liquid crystalline medium and liquid crystal display 有权
    液晶介质和液晶显示

    公开(公告)号：US20070205396A1

    公开(公告)日：2007-09-06

    申请号：US11698280

    申请日：2007-01-26

    申请人： Markus Czanta ,  Melanie Klasen-Memmer ,  Eike Poetsch ,  Lars Lietzau

    发明人： Markus Czanta ,  Melanie Klasen-Memmer ,  Eike Poetsch ,  Lars Lietzau

    IPC分类号： C09K19/34 ,  C09K19/52

    CPC分类号： C09K19/34 ,  C09K19/3402 ,  C09K19/42 ,  C09K2019/0466 ,  C09K2019/3422 ,  Y10T428/10

    摘要： A dielectrically positive liquid crystalline media comprising a dielectrically positive component, component A, comprising a dielectrically positive compound of formula I wherein the parameters have the meaning given in the specification, and optionally a second dielectrically positive component, component B, comprising one or more dielectrically positive compounds having a dielectric anisotropy of more than 3 and optionally a dielectric neutral component, component C, is suitable for use in liquid crystal displays, especially active matrix displays, and, in particular, TN and to IPS displays.

    摘要翻译： 包含介电阳性组分组分A的介电正极液晶介质，其包含式I的介电阳性化合物，其中参数具有说明书中给出的含义，以及任选的第二介电阳性组分，组分B包含一个或多个介电 介电各向异性大于3的正极化合物和任选的介电中性组分C组分适用于液晶显示器，尤其是有源矩阵显示器，特别是TN和IPS显示器。

    Method for production naphthalene derivatives
    97.
    发明申请
    Method for production naphthalene derivatives 有权

    公开(公告)号：US20060025615A1

    公开(公告)日：2006-02-02

    申请号：US10537307

    申请日：2003-10-30

    申请人： Eike Poetsch ,  Werner Binder ,  Peer Kirsch ,  Andreas Taugerbeck

    发明人： Eike Poetsch ,  Werner Binder ,  Peer Kirsch ,  Andreas Taugerbeck

    IPC分类号： C07C331/28 ,  C07D317/02 ,  C07C41/16

    CPC分类号： C07D339/08 ,  C07C41/01 ,  C07C41/06 ,  C07C43/225 ,  C07C51/15 ,  C07C2602/10 ,  C07C2602/28 ,  C07D339/06 ,  C07C63/04

    摘要： The present invention relates to a process for the preparation of a compound of the general formula R-(A1-Z-)mB—CF2O-A2-(A3)n-R′  (I) in which R is alkyl, in which one or more CH2 groups may be replaced, independently of one another, by O, CF2, CH═CH, CH═CF or CF═CF, with the proviso that peroxide structures O—O and formaldehyde acetals O—CH2—O are excluded, A1 is, independently of one another, 1,4-cyclohexylene, 2,5-1,3-dioxanylene, 1,3-cyclobutylene or A2 and A3 are 1,4-phenylene, in which, independently of one another, from one to four hydrogens may be replaced by fluorine or one or two CH groups may be replaced by N, Z is a single bond, —CH2—CH2—, —CF2—CF2—, —CH═CH—, —CF═CF—, —CH═CF— or —CF═CH—, B is 2,6-disubstituted naphthalene, 2,6-disubstituted 5,6,7,8-tetrahydronaphthalene or 2,6-disubstituted trans-decalin, R′ is R, F, OCF3, OCF2H, CF3, CI, SF5, CN or NCS, and m and n are, independently of one another, 0 or 1, comprising the following steps: a) conversion of a compound of the general formula R-(A1-Z-)mBX   (II), in which X is halogen or ═O and the other symbols are as defined in relation to the formula (I), into a carboxylic acid derivative with elimination of the group X and introduction of a C1 unit; b) reaction of the carboxylic acid derivative with a phenol of the general formula HO-A2(-A3)n-R′  (III), in which A2, A3, R′ and n are as defined in relation to the formula (I), to give the compound of the formula (I).