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69 条记录 (耗时 0.013 秒)

    Chiral compounds
    63.
    发明授权
    Chiral compounds 失效
    手性化合物

    公开(公告)号：US5753141A

    公开(公告)日：1998-05-19

    申请号：US704605

    申请日：1996-09-16

    申请人： Karl Siemensmeyer ,  Volkmar Vill ,  Hanns-Walter Tunger

    发明人： Karl Siemensmeyer ,  Volkmar Vill ,  Hanns-Walter Tunger

    IPC分类号： G02F1/13 ,  C07D493/04 ,  C07D519/00 ,  C07F5/02 ,  C09K19/34 ,  C09K19/40 ,  C09K19/58 ,  C09K19/32 ,  C09K19/30

    CPC分类号： C07D493/04 ,  C07F5/025 ,  C09K19/588

    摘要： The invention relates to chiral compounds of the general formula A--Y--(M--Y).sub.n --B--(Y--M).sub.n --Y--A where B is a radical of the formula ##STR1## and where the radicals A independently of one another are C.sub.1 - to C.sub.20 -alkyl which may be substituted by fluorine, chlorine, bromine or cyano and may be interrupted by O, S, NH, NCH.sub.3, COO or OCO, X are carbon or boron, Y independently of one another are a chemical bond, O, S, NH, N(CH.sub.3), COO or OCO and M independently of one another are a mesogenic group and n independently of one another are 0 or 1 with the proviso that one n is other than 0. The compounds according to the invention are suitable as dopes in liquid-crystalline media.

    摘要翻译： PCT No.PCT / EP95 / 00866 Sec。 371日期1996年9月16日 102（e）1996年9月16日PCT 1995年3月9日PCT公布。 出版物WO95 / 25150 PCT 日期1995年9月21日本发明涉及通式为AY-（MY）nB-（YM）nY-A的手性化合物，其中B为式“IMAGE”或“IMAGE”的基团，其中基团A独立地为一 另一个是可以被氟，氯，溴或氰取代的C 1至C 20烷基，并且可被O，S，NH，NCH 3，COO或OCO间隔，X是碳或硼，Y彼此独立地是 化学键，O，S，NH，N（CH 3），COO或OCO和M彼此独立地是介晶基团，n彼此独立地为0或1，条件是一个n不为0。化合物 根据本发明适合作为液晶介质中的掺杂剂。

    Reversible or irreversible production of an image
    66.
    发明授权
    Reversible or irreversible production of an image 失效

    公开(公告)号：US5538824A

    公开(公告)日：1996-07-23

    申请号：US248552

    申请日：1994-05-24

    申请人： Volker Bach ,  Karl-Heinz Etzbach ,  Harald Fuchs ,  Karl Siemensmeyer ,  Gerhard Wagenblast

    发明人： Volker Bach ,  Karl-Heinz Etzbach ,  Harald Fuchs ,  Karl Siemensmeyer ,  Gerhard Wagenblast

    IPC分类号： B41M5/36 ,  B41M5/28 ,  G02F1/1333 ,  G02F1/141 ,  G03G5/00 ,  G03G5/024 ,  G03G13/056 ,  G03G15/056 ,  G03G13/00

    CPC分类号： B41M5/281 ,  G02F1/133365 ,  G03G13/056 ,  G03G15/056 ,  G03G5/024 ,  G02F1/141

    摘要： In a novel process for the reversible or irreversible production of an image by the imagewise action of energy on a recording layer, resulting in a pattern of surface charges which corresponds to the imagewise action of the energy, on the surface of the recording layer, the recording layer used is one which contains or consists of an organic material which solidifies in glassy form, is nonphotoconductive or only slightly photoconductive and has permanent dipoles, whereinthe pattern of surface charges is produced, without or almost without formation of free charge carriers, by reversible imagewise orientation of some or all of the permanent dipoles present in the recording layer, with the aid of an electric field applied imagewise.The novel process is advantageously carried out using a novel apparatus which comprises a suitable recording element, apparatus for the imagewise action of an electric field on the recording layer of the recording element and a counter-electrode which is in direct, non-frictional contact with the recording layer and can be removed again therefrom. The pattern of surface charges which is produced by the novel process can be treated with liquid or solid toners. The resulting toner image can then either be fixed on the recording layer or transferred from the recording layer to another surface, after which the pattern of surface charges can be deleted by uniform action of energy. Thereafter, a further image can be produced. In this way, it is possible to produce photocopies without the high voltage sources required in the conventional electrophotographic processes having to be used.

    Optically active phenoxypropionic esters
    69.
    发明授权
    Optically active phenoxypropionic esters 失效
    光学活性苯氧基丙酸酯

    公开(公告)号：US5350873A

    公开(公告)日：1994-09-27

    申请号：US928568

    申请日：1992-08-13

    申请人： Volker Bach ,  Wolfgang Brox ,  Karl-Heinz Etzbach ,  Axel Paul ,  Karl Siemensmeyer

    发明人： Volker Bach ,  Wolfgang Brox ,  Karl-Heinz Etzbach ,  Axel Paul ,  Karl Siemensmeyer

    IPC分类号： C07C69/708 ,  C07C69/712 ,  C07C69/734 ,  C07C69/74 ,  C07C69/753 ,  C07C69/757 ,  C07C69/76 ,  C07C69/773 ,  C07C69/86 ,  C07C69/92 ,  C07C69/94 ,  C08F20/30 ,  C08G63/60 ,  C09K19/20 ,  C09K19/58

    CPC分类号： C08G63/60 ,  C07C69/712 ,  C07C69/92 ,  C07C69/94 ,  C08F20/30 ,  C09K19/586

    摘要： Optically active compounds of the formula I ##STR1## where R is C.sub.1 -C.sub.12 -alkyl or -perfluoroalkyl in which one or two non-adjacent CH.sub.2 or CF.sub.2 groups can also be replaced by --O-- and/or --CO-- and/or --CO--O-- and/or --CH.dbd.CH-- and/or --CH-halogen-- and/or --CHCN-- and/or --0--CO--CH-halogen-- and/or --O--CO--CHCN--, or is C.sub.1 -C.sub.12 -alkyl which can have a terminal chemically reactive group and in which a CH.sub.2 group can be replaced by --O--,A.sup.1 and A.sup.2 are each, independently of one another, 1,4-phenylene which is unsubstituted or substituted by one or two F and/or Cl and/or Br atoms and/or CH.sub.3 groups and/or CN groups and in which one or two CH groups can also be replaced by N, 1,4-cyclohexylene in which one or two non-adjacent CH.sub.2 groups can also be replaced by --O-- and/or --S--, 1,4-piperidinediyl, 1,4-bicyclo[2.2.2]octylene, 2,6-naphthalenediyl, decahydro-2,6-naphthalenediyl or 1,2,3,4-tetrahydro-2,6-naphthalenediyl,A.sup.3 is unsubstituted or substituted phenyl,Z is --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O--, --C.tbd.C-- or a single bond andm is 0, 1, 2 or 3.

    摘要翻译： 其中R是具有一个或两个不相邻的CH2或CF2基团的C1-C12-烷基或全氟烷基的式I的光学活性化合物（I）也可以被-O-和/或-CO- 和/或-CO-O-和/或-CH = CH-和/或-CH-卤素 - 和/或-CHCN-和/或-O-CO-CH-卤素 - 和/或-O-CO- CHCN-或可具有末端化学反应性基团并且其中CH 2基团可被-O-，A 1和A 2取代的C 1 -C 12 - 烷基彼此独立地为彼此独立的1,4-亚苯基，其为 未被取代或被一个或两个F和/或Cl和/或Br原子和/或CH 3基团和/或CN基团取代，并且其中一个或两个CH基团也可被N，1,4-亚环己基代替，其中一个或两个 或两个不相邻的CH 2基团也可以被-O-和/或-S-，1,4-哌啶二基，1,4-二环[2.2.2]亚辛基，2,6-萘二甲酸，十氢-2， 6-萘二基或1,2,3,4-四氢-2,6-萘二基，A3是未取代或取代的苯基，Z是-CO-O-，-O-CO-，-CH2CH2 - ， - OCH2 - ， - CH2O-，-C3OND C或单键，m为0,1,2或3。