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    1.
    发明专利
    未知

    公开(公告)号：ES2135438T3

    公开(公告)日：1999-11-01

    申请号：ES93119255

    申请日：1993-11-30

    Applicant: BASF AG

    Inventor： LOEFFLER HERMANN ,  LAMM GUNTHER DR ,  BACH VOLKER DR ,  LANGE ARNO DR ,  REICHELT HELMUT DR ,  ROTHMAIER HERBERT

    IPC: C09B67/22 ,  D06P1/02

    Abstract: Dye mixtures containing at least 6 identically coloured dyes of the formula in which D is the radical of a diazo component from the aniline, aminothiophene, aminothiazole, aminoisothiazole or aminobenzisothiazole series, and one of the radicals X and X is amino and the other is a radical of the formula in which L is optionally substituted C2-C8-alkylene, R is hydrogen or optionally substituted C1-C4-alkyl, and R is hydrogen, C1-C4-alkyl, benzyl, phenyl or C1-C8-alkanoyl, their use for the dyeing or printing of textile materials, dye mixtures containing thienylazopyridine dyes and anthraquinone dyes, and their use for the dyeing or printing of textile materials.

    2.
    发明专利
    未知

    公开(公告)号：DE59206734D1

    公开(公告)日：1996-08-14

    申请号：DE59206734

    申请日：1992-10-27

    Applicant: BASF AG

    Inventor： BACH VOLKER DR ,  ETZBACH KARL-HEINZ DR ,  SIEMENSMEYER KARL DR ,  WAGENBLAST GERHARD DR

    IPC: C03B19/00 ,  C09K19/02 ,  G02F1/137

    Abstract: The process according to the invention is a process for the preparation of aligned, ferroelectrically or ferrielectrically or antiferroelectrically ordered materials which solidify in a glass-like manner. In these layer structures which are ordered in a polar manner, the molecular dipole moments are not compensated, are partially compensated or are fully compensated, so that a dipole moment which corresponds to the degree of compensation is apparent from the outside.

    4.
    发明专利
    未知

    公开(公告)号：DE4126996A1

    公开(公告)日：1993-03-25

    申请号：DE4126996

    申请日：1991-08-16

    Applicant: BASF AG

    Inventor： BACH VOLKER DR ,  BROX WOLFGANG DR ,  ETZBACH KARL-HEINZ DR ,  PAUL AXEL DR ,  SIEMENSMEYER KARL DR

    IPC: C07C69/708 ,  C07C69/712 ,  C07C69/734 ,  C07C69/74 ,  C07C69/753 ,  C07C69/757 ,  C07C69/76 ,  C07C69/773 ,  C07C69/86 ,  C07C69/92 ,  C07C69/94 ,  C08F20/30 ,  C08G63/02 ,  C08G63/60 ,  C09K19/04 ,  C09K19/06 ,  C09K19/12 ,  C09K19/20 ,  C09K19/58

    Abstract: Optically active compounds of the formula I in which the indices and variables have the following meanings: R is a C1-C12-alkyl or -perfluoroalkyl group in which, in addition, one or two non-adjacent CH2 or CF2 groups may be replaced by O atoms and/or -CO- groups and/or -CO-O- groups and/or -CH=CH- groups and/or -CH-halogen- and/or -CHCN- groups and/or -O-CO-CH-halogen- and/or -O-CO-CHCN- groups, or is a C1-C12-alkyl group which may carry a terminal chemically reactive group and in which one CH2 group may be replaced by an O atom, A and A , independently of one another, are 1,4-phenylene which is unsubstituted or substituted by one or two F and/or Cl- and/or Br atoms and/or CH3 groups and/or CN groups, and in which one or two CH groups may be replaced by N, 1,4-cyclohexylene in which, in addition, one or two non-adjacent CH2 groups may be replaced by O atoms and/or S atoms, piperidine-1,4-diyl, 1,4-bicyclo[2.2.2]octylene, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, A is optionally substituted phenyl, Z is -CO-O, -O-CO-, -CH2CH2-, -OCH2-, -CH2O-, -CIC- or a single bond, m is 0, 1, 2 or 3 with the proviso that, if m = 2 or 3, the radicals R and Z in the individual groups -(A -Z) may be identical to or different from one another. The compounds according to the invention are used as components of chiral, tilted, smectic, liquid-crystalline phases.

    5.
    发明专利
    未知

    公开(公告)号：DE4115415A1

    公开(公告)日：1992-11-12

    申请号：DE4115415

    申请日：1991-05-10

    Applicant: BASF AG

    Inventor： BACH VOLKER DR ,  ETZBACH KARL-HEINZ DR ,  SIEMENSMEYER KARL DR

    IPC: C08F20/02 ,  C08F20/10 ,  C08F20/12 ,  C08F20/30 ,  C09K19/38 ,  G02F1/13

    Abstract: Liquid-crystalline polymers having a virtually uniform molecular weight are obtainable by polymerisation of identical or different monomers of the formula I in which the variables have the following meanings: R is hydrogen, chlorine or methyl; A is a flexible, long-chain moiety which acts as a spacer; B is a mesogenic moiety built up from at least two aromatic rings linked to one another in a linear or approximately linear manner; C is an optically active, chiral moiety, in 0.01 to 0.1 molar solution in an inert organic solvent in the presence of from 1 to 40 mol %, based on the monomers, of a free-radical initiator at a temperature between 40 and 60 DEG C for from 100 to 140 hours, and subsequent isolation of the polymerisation product from the reaction mixture, and the use thereof for building up recording layers for laser-optical and electrical recording elements and for electrophotography and for the construction of liquid-crystalline display elements.

    7.
    发明专利
    未知

    公开(公告)号：DE59208698D1

    公开(公告)日：1997-08-21

    申请号：DE59208698

    申请日：1992-02-21

    Applicant: BASF AG

    Inventor： BACH VOLKER DR ,  ETZBACH KARL-HEINZ DR ,  FUCHS HARALD DR ,  SIEMENSMEYER KARL DR ,  WAGENBLAST GERHARD DR

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

    Abstract: In a novel process for reversible or irreversible production of an image by imagewise action of energy upon a recording layer, whereby a pattern, corresponding to the imagewise action of the energy, of surface charges results on the surface of the recording layer, a recording layer is used which - contains or consists of an organic material which solidifies to a glassy state, is not or is only slightly photoconductive and contains permanent dipoles, wherein - the pattern of surface charges is produced without or almost without formation of free charge carriers by reversible imagewise alignment of all the permanent dipoles, or a part thereof, present in the recording layer by means of an electric field applied imagewise. The novel process is advantageously carried out by means of a novel apparatus which comprises a suitable recording element, devices for the imagewise action of an electric field upon 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 from the latter. The pattern of surface charges, as produced by the novel process, can be toned with liquid or solid toners. The resulting toner image can then either be fixed on the recording layer or be transferred from the recording layer to another surface, whereupon the pattern of surface charges can be erased again by energy acting on the whole area. After this, a new image can be produced again. In this way, photocopies can be produced without having to use the high-voltage sources necessary in the conventional electrophotographic processes.

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