Abstract: Thiazoleazo dyes useful for dyeing or printing textile fibers have the formula ##STR1## where R.sup.1 is hydrogen, substituted or unsubstituted C.sub.1 -.sub.6 -alkyl, halogen, substituted or unsubstituted C.sub.1 -C.sub.6 -alkoxy, substituted or unsubstituted C.sub.1 -C.sub.6 alkythio, substituted or unsubstituted phenylthio, C.sub.1 -C.sub.6 -alkylsulfonyl, substituted or unsubstituted phenylsulfonyl or C.sub.1 -C.sub.4 -alkoxycarbonyl,R.sup.2 is cyano, C.sub.1 -C.sub.4 -alkanoyl, benzoyl, C.sub.1 -C.sub.6 alkylsulfonyl, substituted or unsubstituted phenylsulfonyl or a radical of the formula --CH.dbd.T, where T is the radical of an acidic CH compound,R.sup.3 is hydrogen, substituted or unsubstituted C.sub.1 -.sub.6 -alkoxy, C.sub.1 -C.sub.4 -alkoxycarbonyl, carbamoyl or mono- or di-C.sub.1 -C.sub.4 -alkylcarbamoyl,R.sup.4 is C.sub.1 -C.sub.6 -alkyl, substituted or unsubstituted C.sub.1 -C.sub.6 -alkoxy, substituted or unsubstituted C.sub.1 -C.sub.

Abstract: The compounds of the general formula ##STR1## where X is fluorine, chlorine, bromine, SO.sub.2 E or unsubstituted or substituted hydroxyl or mercapto, E is alkyl, alkenyl, cycloalkyl, aralkyl, aryl, chlorine or unsubstituted or substituted hydroxyl or amino, Y is cyano, nitro, alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl, carboxyl, a carboxylic ester group or unsubstituted or substituted carbamyl, T is hydrogen, C.sub.1 -C.sub.4 -alkyl, a radical which can be introduced by electrophilic substitution or a radical of the formula --CH.dbd.B, in which B is a radical of a methylene-active compound or of an amine, and K is a radical of a coupling component, are very useful for dyeing synthetic fibers or plastics.

Abstract: Thiopheneazo dye I which are chiefly useful as disperse dyes for dyeing textile material, in particular polyesters, have the formula ##STR1## where the substituents are as defined in the description.

Abstract: Azo dyes useful for marking mineral oils have the formula ##STR1## where R.sup.1 and R.sup.2 are hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,R.sup.3 is hydrogen or C.sub.1 -C.sub.8 -alkyl which may be substituted by hydroxyl and interrupted by from 1 to 3 oxygen atoms,R.sup.4 is C.sub.1 -C.sub.8 -alkyl which may be substituted by hydroxyl and interrupted by from 1 to 3 oxygen atoms, andX is cyano or substituted or unsubstituted C.sub.1 -C.sub.8 -alkoxycarbonyl,with the proviso that the molecule contains at least one hydroxyalkyl radical.

Abstract: Quaternized azo dyes whose diazo components are derived from a five-membered nitrogen-containing aromatic aminoheterocycle and whose coupling components are derived from the aniline series are prepared by reacting to corresponding neutral dye-bases with an alkylating agent in .gamma.-butyrolactone as inert diluent.

Abstract: Aminothiazoles of the formula ##STR1## or the tautomers thereof, where R.sup.1 and R.sup.2 are each hydrogen or together form a radical of the formula ##STR2## where T.sup.1 is hydrogen, alkyl or phenyl, T.sup.2 and T.sup.3 are each, independently of one another, alkyl or phenyl, or T.sup.2 and T.sup.3 form, together with the nitrogen atom connecting them, a heterocyclic radical, R.sup.3 is substituted mercapto or substituted amino and R.sup.4 is alkanoyl, benzoyl, cyano or ##STR3## where T.sup.4 is hydroxyl, C.sub.1 -C.sub.6 -alkoxy, amino or R.sup.3, T.sup.5 is hydrogen, alkyl or phenyl and T.sup.6 is the radical of a primary amine or of an active methylene compound, are prepared as described.

Abstract: A process for the preparation of aromatic carbonyl or sulfonyl compounds with a diaryl ether structure by reacting phenols with halogenated carbonyl- or sulfonylaromatic compounds in a dipolar aprotic solvent is carried out in the presence of catalytic amounts of alkali metal nitrite or an aromatic nitro, nitroso, azo, azoxy or hydrazo compound.

Abstract: The preparation of N,N-disubstituted m-aminophenols from resorcinol, which is reacted, in a first step, with primary amines to form N-monosubstituted m-aminophenols, which are treated in situ, in a second step, with alkylating agents to form N,N-disubstituted m-aminophenols.

Abstract: Thiopheneazo dyes of the formula ##STR1## where R.sup.1 is cyano, C.sub.1 -C.sub.4 -alkoxycarbonyl, phenylazo, phenylsulfonyl, formyl or the radical ##STR2## where R.sup.7 and R.sup.8 are independently of the other cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl,R.sup.2 is C.sub.1 -C.sub.4 -alkyl, phenyl, halogen, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkoxycarbonyl, or R.sup.1 and R.sup.2 together are the radical (CH.sub.2).sub.3 --CO, which may be substituted by 1 or 2 methyl groups and whose carbonyl group is bonded to the thiophene ring in the ortho position relative to the sulfur atom,R.sup.3 is cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl,R.sup.4 is C.sub.1 -C.sub.8 -alkyl, cyclohexyl, phenoxy-C.sub.1 -C.sub.4 -alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted thienyl,R.sup.5 is C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.7 -alkyl whose alkyl chain is interrupted by 1 or 2 oxygen atoms, or C.sub.1 -C.sub.4 -alkoxy andR.sup.6 is cyanoethyl, phenylethyl or C.sub.3 -C.sub.

Abstract: Azo dyes useful for thermotransfer printing have the formula ##STR1## where the substituents have the following meanings: X is a radical of the formula IIa or IIb ##STR2## R.sup.1 is H, C.sub.1 -C.sub.6 -alkyl or phenyl which may be substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.2 -alkoxy, chlorine, bromine or cyano,R.sup.2 is H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, chlorine or bromine, n is 1 or 2, K is a radical of a coupling component IIH--K IIIof the aniline, aminonaphthaline, pyrazole, diaminopyridine, hydroxypyridone or tetrahydroquinoline series.

Abstract: Azo dyes of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently denote hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,R.sup.4 denotes C.sub.1 -C.sub.6 -alkyl andR.sup.5 denotes C.sub.2 -C.sub.8 -alkyl which is substituted by hydroxy and may be interrupted by 1, 2 or 3 oxygen atoms,provided that the total number of carbon atoms in the radicals R.sup.4 and R.sup.5 is at least 5,mineral oils containing one or more of said novel dyes and the use of said dyes for marking mineral oils.

Abstract: Benzisothiazole-azo dyes useful for dyeing synthetic fiber materials have the formula ##STR1## where X is hydrogen, chlorine, bromine, cyano or nitro and K is a radical of the formula ##STR2## where R.sup.1 is substituted or unsubstituted C.sub.1 -C.sub.12 -alkyl, substituted or unsubstituted phenyl, C.sub.3 -C.sub.5 -alkenyl or C.sub.5 -C.sub.7 -cycloalkyl,R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.3 is hydrogen or methyl andR.sup.4 is hydrogen, cyano, carbamoyl or C.sub.1 -C.sub.4 -alkoxycarbonyl.

Abstract: Azo dyes useful for thermotransfer printing have the formula ##STR1##

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.8 -alkyl which may be interrupted by 1 or 2 oxygen atoms, andX is CH or nitrogen.

Abstract: Thiopheneazo dyes of the formula ##STR1## where X is cyano or C.sub.1 -C.sub.4 -alkoxycarbonyl,Y is halogen, hydroxyl, mercapto, substituted or unsubstituted C.sub.1 -C.sub.6 -alkoxy, C.sub.5 -C.sub.7 -cycloalkoxy, substituted or unsubstituted phenoxy, substituted or unsubstituted C.sub.1 -C.sub.6 -alkylthio, C.sub.5 -C.sub.7 -cycloalkylthio, substituted or unsubstituted phenylthio, C.sub.1 -C.sub.6 -alkylsulfonyl or substituted or unsubstituted phenylsulfonyl,Z is nitro, cyano, C.sub.1 -C.sub.4 -alkanoyl, benzoyl, C.sub.1 -C.sub.4 -alkylsulfonyl, phenylsulfonyl or a radical of the formula --CH.dbd.CB.sup.1 B.sup.2 or --CH.dbd.N--B.sup.3, in which B.sup.1 and B.sup.2 independently of the other are cyano, substituted or unsubstituted C.sub.1 -C.sub.6 -alkoxycarbonyl or C.sub.3 -C.sub.6 -alkenyloxycarbonyl or one of B.sup.1 and B.sup.2 is cyano and the other is C.sub.1 -C.sub.4 -alkylsulfonyl, substituted or unsubstituted phenyl, benzoyl, phenylsulfonyl or carbamoyl and B.sup.3 is hydroxyl, C.sub.1 -C.sub.

Abstract: Thiazoleazo dyes of the formula ##STR1## where X is nitrogen or a radical C--R.sup.5, R.sup.5 being cyano, halogen, alkoxycarbonyl or thiocyanato, R.sup.1 is cyano, chlorine, unsubstituted or substituted C.sub.1 -C.sub.6 -alkyl, unsubstituted or substituted phenyl, unsubstituted or substituted thienyl, unsubstituted or substituted pyridyl or unsubstituted or substituted alkylthio, alkylsulfinyl or alkylsulfonyl, R.sup.2 is unsubstituted or substituted alkyl, cycloalkyl, unsubstituted or substituted phenyl, furyl, unsubstituted or substituted thienyl or pyridyl and R.sup.3 and R.sup.4 independently of one another are each unsubstituted or substituted alkyl, or R.sup.3 and R.sup.4, together with the nitrogen atom which links them, form a heterocyclic radical, are used for dyeing textile fibers having good wet fastness and color build-up.

Abstract: Dye mixtures useful for dyeing or printing synthetic fabrics contain at least one azo dye whose diazo component is 2-amino-3,5-dicyano-4-methylthiophene and whose coupling component comes from the 2-amino-4-thienylthiazole series and also at least one azo dye whose diazo component is 2-amino-3,5-dicyano-4-methylthiophene, 2-amino-3-alkoxycarbonyl-5-cyano-4-methylthiophene or 2-amino-5-alkoxycarbonyl-3-cyano-4-methylthiophene and whose coupling component comes from the 3-cyano-4-methyl-2,6-diaminopyridine series, and/or at least one azo dye whose diazo component is a 2,6-dicyano-4-alkylaniline and whose coupling component comes from the m-phenylenediamine series.

Abstract: Triazolopyridines of the formula ##STR1## where R.sup.1 is C.sub.1 -C.sub.20 -alkyl which may be substituted, phenyl which may be substituted, or hydroxyl,R.sup.2 is hydrogen, formyl, nitroso, cyano or substituted methyl,R.sup.3 is hydrogen, cyano, carbamoyl, carboxyl or C.sub.1 -C.sub.4 -alkoxycarbonyl andR.sup.4 is hydroxyl, halogen, amino which may be substituted or the radical of a compound with an acidic CH,are prepared as described. The compounds are useful as intermediates in the preparation of dyes.

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.

Abstract: A process for the preparation of bis(4-hydroxyphenyl) sulfone by reacting phenol with sulfuric acid at a temperature of from 140.degree. to 230.degree. C., wherein the sulfuric acid is metered in to the phenol only after the reaction temperature has been reached, the phenol and sulfuric acid are used in a molar ratio of from 1:1 to 25:1 and the reaction is carried out in the absence of an inert solvent.