Abstract: The use of low molecular-weight or polymeric organic compounds which are present in the columnar-helical phase and have liquid-crystalline properties, as photoconductors or in electronic components, corresponding photoconductive layers, an electrophotographic recording material and a method for enhancing the photoconductivity.

Abstract: Pyridone dyes of the formula I ##STR1## where X is nitrogen or CH,R.sup.1 is a 5-membered or 6-membered carbocyclic or heterocyclic radical,R.sup.2 is cyano, carbamoyl, C.sub.1 -C.sub.6 -alkoxycarbonyl or C.sub.1 -C.sub.4 -alkanoyl andR.sup.3 is unsubstituted or substituted C.sub.1 -C.sub.13 -alkyl, unsubstituted or substituted phenyl or unsubstituted or substituted amino,a method for their thermal transfer and a method for coloring or printing synthetic materials by means of the novel dyes.The invention concerns pyridone dyes of the formula (I) in which X is nitrogen or CH, R.sup.1 is a five-membered or six-membered carbocyclic or heterocyclic group, R.sup.2 is cyano, carbamoyl, C.sub.1 -C.sub.6 alkoxycarboyl or C.sub.1 -C.sub.4 alkanoyl and R.sup.3 is optionally substituted C.sub.1 -C.sub.13 alkyl, optionally substituted phenyl or optionally substituted amino.

Abstract: An electroluminescent arrangement contains one or more organic layers, at least one of which is obtained by thermal or radiation-induced crosslinking and contains at least one charge-transporting compound which can carry crosslinkable groups per layer, one of the layers being completely or partially composed of a crosslinkable fluorescent compound which emits fluorescent light in the wavelength range from 400 to 800 nm.

Abstract: The invention relates to chiral compounds containing at least one divalent or polyvalent chiral group, at least one polymerizable group, at least one spacer and at least one mesogenic group, and to their use as polymerizable, chiral dopes for the preparation of cholesteric networks.The novel compounds are suitable for use in electro-optical displays or as chiral dopes for nematic or cholesteric liquid crystals in order to produce layers which reflect in colors.

Abstract: Dye mixtures comprising one or more pyridone dyes of the formula ##STR1## where M is a pyridone or triazolopyridone radical which is bonded to the thiazole ring via CH and the other radicals are each as defined in the description, and one or more dyes based on 1-aminoanthraquinone are useful for thermal transfer.

Abstract: Methine dyes of the formula ##STR1## where K is a carbocyclic or heterocyclic radical,X is nitrogen or a radical of the formula C--Q.sup.1, andQ.sup.1, Q.sup.2 and Q.sup.3 are hydrogen, substituted or unsubstituted C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, substituted or unsubstituted phenyl, C.sub.1 -C.sub.6 -alkoxy, benzyloxy, substituted or unsubstituted phenoxy, C.sub.1 -C.sub.6 -alkylthio, halogen, cyano, formylamino or a radical of the formula R.sup.3, --CO--OR.sup.1, --CO--NHR.sup.1, --CO--NH--CO--R.sup.1, --CO--NH--CO--R.sup.3, --CO--NH--SO.sub.2 R.sup.3, --NH--CO--R.sup.1, --NH--CO--OR.sup.1, --NH--CO--NR.sup.1 R.sup.2, NH--CS--OR.sup.1, --NH--CS--NR.sup.1 R.sup.2, --NH--CO--R.sup.3, --NH--SO.sub.2 --R.sup.1, --NH--SO.sub.2 --R.sup.3 or --NH--SO.sub.2 --NR.sup.1 R.sup.2, wherein R.sup.1 and R.sup.2 are substituted or unsubstituted C.sub.1 -C.sub.13 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl or substituted or unsubstituted phenyl, or else --NR.sup.1 R.sup.2 is amino, and R.sup.

Abstract: Mixtures of liquid-crystalline compounds comprising at least two different substances of the formula I ##STR1## where Z.sup.1 and Z.sup.2, independently of one another, are polymerizable groups,Y.sup.1 and Y.sup.2, independently of one another, are each a direct bond, --O--, --COO--, --OCO-- or --S--,A.sup.1 and A.sup.2, independently of one another, are spacers, andR.sup.1, R.sup.2 and R.sup.3 are conventional substituents,and novel compounds of the above formula where at least two of Z.sup.1, Z.sup.2, Y.sup.1, Y.sup.2, A.sup.1 and A.sup.2 are not identical, are described. The novel mixtures and compounds are suitable, inter alia, as base material for color-effect materials and piezomaterials, preferably in chirally doped form.

Abstract: Azamethine dyes of the formula ##STR1## where W is oxygen, sulfur or a radical of the formula --NH--CO--, --NH--COO-- oder --NH--SO.sub.2 --,Z.sup.1 is C.sub.1 -C.sub.4 -alkyl with or without substitution, phenyl or C.sub.1 -C.sub.4 -alkoxy,Z.sup.2 and Z.sup.3 are each hydrogen or C.sub.1 -C.sub.4 -alkyl with or without substitution, provided --CZ.sup.1 Z.sup.2 Z.sup.3 is not linear and is not isopropyl,Z.sup.4 is hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,Z.sup.5 and Z.sup.6 are each C.sub.1 -C.sub.10 -alkyl with or without substitution, C.sub.3 -C.sub.4 -alkenyl, C.sub.5 -C.sub.7 -cycloalkyl, phenyl or tolyl, or together with the nitrogen atom joining them together a heterocyclic radical or Z.sup.4 and Z.sup.5 are together a bridge member, andT is a radical of a cyclic acidic--CH compound H.sub.2 T,are useful for thermal transfer.

Abstract: Liquid-crystalline compounds of the formula IX(--Y--A--Y--M--Y--B).sub.n I,whereX is an aromatic or aliphatic ring system,n is an integer from 2 to 6,each Y, independently of the others, is a direct bond, --COO--, --OCO--, --O--, --CONH-- or --CON(R)--, where R is C.sub.1 -- to C.sub.4 -alkyl,A is a spacer,M is a mesogenic group andB is a side chain,are particularly suitable for use in displays or for the production of light-reflecting coatings.

Abstract: The use of low molecular-weight or polymeric organic compounds which are present in the columnar-helical phase and have liquid-crystalline properties, as photoconductors or in electronic components, corresponding photoconductive layers, an electrophotographic recording material and a method for enhancing the photoconductivity.

Abstract: A process for coating or printing substrates with a coating or printing composition comprises applying a polymerizable material containing liquid-crystalline, polymerizable monomers which carryat least two polymerizable groups for coating andat least one polymerizable group for printing,to the substrate, and subsequently carrying out the polymerization, where the coating composition or the printing composition comprisesa.sub.1) a chiral liquid-crystalline monomer andb) a polymeric binder and/or monomeric compounds which can be converted into the polymeric binder by polymerization, or, in the case of emulsion coatings and printing inks, a dispersion auxiliary d),or the coating composition or the printing composition comprisesa.sub.

Abstract: Azo dyes of the formula ##STR1## where D is the radical of a diazo component of the aniline series or the series of the aromatic heterocyclic amines,R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.10 -alkyl, which may be substituted, C.sub.5 -C.sub.7 -cycloalkyl, C.sub.3 -C.sub.4 -alkenyl, substituted or unsubstituted phenyl, or are together with the nitrogen atom joining them together a heterocyclic radical, andR.sup.3 is tert-butyl or tert-pentyl,are useful for thermal transfer and for dyeing or printing synthetic materials.

Abstract: Dye mixtures include one or more pyridone dyes of the formula ##STR1## where M is a pyridone or triazolopyridone radical which is linked to the thiazole ring via nitrogen or CH and the rest of the radicals are each as defined in the description,and one or more azo dyes of the formulaD--N=N--K,where D is the radical of a diazo component of the pyrrole, thiophene, pyrazole, thiazole, isothiazole, triazole, thiadiazole, benzothiophene, benzothiazole, benzisothiazole, pyridothiophene, pyrimidothiophene, thienothiophene or aniline series, andK is the radical of a coupling component of the aminothiazole, aniline or tetrahydroquinoline series, and are useful for thermal transfer.

Abstract: Polymerizable azo dyes I ##STR1## in which R.sup.1 is an aryl group,R.sup.2 is cyano, C.sub.1 -C.sub.4 -alkoxycarbonyl or nitro,R.sup.3 and R.sup.4 are hydrogen, C.sub.1 -C.sub.12 -alkyl or C.sub.1 -C.sub.6 -alkoxy,R.sup.5 is hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl or C.sub.3 -C.sub.4 -alkenyl,R.sup.6 is hydrogen or methyl,Y is C.sub.2 -C.sub.10 -alkylene which can be interrupted by 1 to 3 nonadjacent oxygen atoms or imino or C.sub.1 -C.sub.4 -alkylimino groups, andW is oxygen, imino or C.sub.1 -C.sub.4 -alkyliminoare used to prepare copolymers which show nonlinear-optical properties.

Abstract: The invention relates to chiral compounds containing at least one divalent or polyvalent chiral group, at least one polymerizable group, at least one spacer and at least one mesogenic group, and to their use as polymerizable, chiral dopes for the preparation of cholesteric networks. The novel compounds are suitable for use in electro-optical displays or as chiral dopes for nematic or cholesteric liquid crystals in order to produce layers which reflect in colors.

Abstract: Phenol derivatives of the general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3, X, Y and Z have the meanings stated in the description, are used in particular in nonlinear optics.

Abstract: Chiral nematic polyesters comprise as alcohol component chiral diol structural units and as acid component dicarboxylic acid residues comprising mesogenic groups. The polyesters are particularly suitable for surface coating.

Abstract: Naphthalene derivatives of the formula ##STR1## where the rings A and B may be benzofused,X is nitrogen or a radical of the formula CH or CH.dbd.CH--CH,Z is a heterocyclic radical or additionally, when x is CH.dbd.CH--CH, a 5- or 6-membered aromatic carbocyclic radical, andR.sup.1, R.sup.2 and R.sup.3 are hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.5 -C.sub.7 -cycloalkyl, are useful in nonlinear optics.

Abstract: A polymerizable, chiral compound of the formula (I):(Z--Y.sup.1 -A-O--CO--O-M-Y.sup.2).sub.n X (I)where:A, M, Y.sup.1 and Y.sup.2, X, n and Z are as defined herein; and which compound is suitable for use in electro-optical displays or as chiral dopes for nematic or cholesteric liquid crystals for the production of layers which reflect in colors.

Abstract: Use of azo dyes having a diazo component derived from an aminothienothiophene and a coupling component of the aniline series in nonlinear optics, polymers derived from these azo dyes, the use thereof in nonlinear optics, and novel phenylthienothienylazoanilines.