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: 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: Methine dyes of the formula ##STR1## where K is a 5- or 6-membered carbocyclic or heterocyclic radical,X is nitrogen or a radical of formula C--Q.sup.1, andQ.sup.1, Q.sup.2 and Q.sup.3 are each independently of the others hydrogen, C.sub.1 -C.sub.6 -alkyl with or without interruption by 1 or 2 oxygen atoms in ether function, benzyl, C.sub.3 -C.sub.8 -cycloalkyl, substituted or unsubstituted phenyl, C.sub.1 -C.sub.4 -fluoroalkyl, 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, --COR.sup.1, --CO--NHR.sup.1, --CO--NH--CO--R.sup.1, --CO--NH--CO--R.sup.4, --CO--NH--SO.sub.2 R.sup.4, --NH--CO--R.sup.1, --NH--CO--OR.sup.1, --NH--CO--NR.sup.1 R.sup.2, --NH--CSOR.sup.1, --NH--CS--NR.sup.1 R.sup.2, --NH--CO--R.sup.4, --NH--SO.sub.2 --R.sup.1, --NH--SO.sub.2 --R.sup.4 or --NH--SO.sub.2 --NR.sup.1 R.sup.2, where R.sup.1 and R.sup.2 are each independently of the other C.sub.1 -C.sub.

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: Methine dyes of the formula I ##STR1## where R is hydrogen, unsubstituted or substituted C.sub.1 -C.sub.10 -alkyl or unsubstituted or substituted phenyl,X is nitrogen or a radical of the formula CQ.sup.1, CH.dbd.CQ.sup.1 --CH, CH.dbd.CH--CH.dbd.CH--CH, ##STR2## where Q.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl, chlorine or bromine and Q.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl, andY is a radical of the aniline, aminonaphthalene, indole, aminoquinoline, aminothiazole or aminothiophene series,the use thereof in nonlinear optics, and novel thiazole derivatives.

Abstract: Methine or azamethine dyes are prepared on the basis of pyridine dyes by condensing an oxime- or formyl-pyridine or its tautomeric form with 5-membered aromatic heterocycles.

Abstract: Triazolopyridine dyes of the formula ##STR1## where R.sup.1 is unsubstituted or substituted C.sub.1 -C.sub.20 -alkyl, unsubstituted or substituted phenyl, unsubstituted or substituted hydroxyl or unsubstituted or substituted mercapto,Q is a radical of the formula ##STR2## where R.sup.2 is a carbocyclic or heterocyclic radical,R.sup.3 is hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl,R.sup.4 is hydrogen, unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,R.sup.5 is unsubstituted or substituted C.sub.1 -C.sub.8 -alkyl, unsubstituted or substituted phenyl, unsubstituted or substituted thienyl or unsubstituted or substituted C.sub.1 -C.sub.4 -alkoxy, or the radical CR.sup.3 R.sup.4 R.sup.5 together is C.sub.3 -C.sub.7 -cycloalkyl, C.sub.1 -C.sub.4 -haloalkyl, unsubstituted or substituted phenyl or unsubstituted or substituted thienyl,R.sup.6 is cyano, carbamoyl, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl or benzothiazolyl, andE is CH or nitrogen, andR.sup.

Abstract: Triazolopyridine dyes of the formula ##STR1## where one of the two radicals A and E is nitrogen and the other is a radical of the formula C-R.sup.1, where R.sup.1 is unsubstituted or substituted C.sub.1 -C.sub.20 -alkyl, unsubstituted or substituted phenyl or unsubstituted or substituted mercapto,Q is a radical of the formula ##STR2## where R.sup.2 is a carbocyclic or heterocyclic radical,R.sup.3 is unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxycarbonyl or unsubstituted or substituted phenyl,R.sup.4 is cyano, carbamoyl, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl or benzothiazolyl or R.sup.3 and R.sup.4 together are the remainder of a fused-on benzene ring andX is CH or nitrogen, andR.sup.5 is oxygen or a radical of a compound with an acidic CH, and a process for the thermal transfer of these dyes.

Abstract: A process for transferring dyes from a transfer to plastic-coated paper by diffusion or sublimation with the aid of an energy source comprises using a transfer on which there is or are one or more pyridone dyes of the formula ##STR1## where X is nitrogen or CH,R.sup.1 and R.sup.2 are each substituted or unsubstituted C.sub.1 -C.sub.10 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, C.sub.3 -C.sub.4 -alkenyl or substituted or unsubstituted phenyl, or R.sup.1 and R.sup.2 are together with the nitrogen atom joining them together a heterocyclic radical,R.sup.3 is C.sub.3 -C.sub.10 -alkyl or C.sub.5 -C.sub.7 -cycloalkyl,R.sup.4 is hydrogen, C.sub.1 -C.sub.4 -alkyl or substituted or unsubstituted phenyl,R.sup.5 is cyano, substituted or unsubstituted carbamoyl, carboxyl, C.sub.1 -C.sub.8 -alkoxycarbonyl or benzimidazolyl, andR.sup.6 is substituted or unsubstituted C.sub.1 -C.sub.10 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl or substituted or unsubstituted phenyl.

Abstract: Triazolopyridine dyes useful for thermal transfer of methine dyes have the formula ##STR1## where R.sup.1 is C.sub.1 -C.sub.20 -alkyl, which may be substituted and interrupted by one or more oxygen atoms, or is substituted or unsubstituted phenyl or hydroxyl,R.sup.2 is a 5- or 6-membered carbocyclic or heterocyclic ring which may be substituted and benzofused,R.sup.3 is cyano, carbamoyl, carboxyl or C.sub.1 -C.sub.4 -alkoxycarbonyl,R.sup.4 is oxygen or a radical of the formula ##STR2## where L.sup.1 is in each case C.sub.1 -C.sub.6 -alkyl which may be interrupted by 1 or 2 oxygen atoms, andX is CH or nitrogen.