Basf Aktiengesellschaft

Matthias Wiesenfeldt

Karl-Heinz Etzbach

Helmut Reichelt

Gunther Lamm

Ruediger Sens

Manfred Patsch

Ernst Schefczik

Sabine Gruettner-Merten

Manfred Herrmann

Heike Kilburg

Johannes P Dix

Bernd Siegel

Guenter Hansen

Erwin Hahn

Rudiger Sens

Klaus Pandl

Rolf Streicher

Knut Kessel

Juergen Pfister

Sabine Gruettner

Karl H Etzbach

Rudolf Paulus

Kurt Reiner

Jorg Jessen

Stable colorant compositions

Polyazo dyes of the formula I ##STR1## where one of the two radicals X.sup.1 and X.sup.2 is hydroxyl and the other is amino, p and q are each independently of the other 0 or 1, D.sup.1 and D.sup.2 are each independently of the other a radical of the formula ##STR2## and B is a bridge member are prepared using novel sulfonamide intermediates and are useful as dyes for dyeing natural or synthetic substrates.

Polyazo dyes containing a plurality of hydroxy sulfonyl groups

Acid polyazo dyes

Dye mixtures containing polyazo dyes and CI Sulphur Black 1 dye

Liquid or solid mixtures of low-salt sulfo-containing 1:2 metal complex dyes and poly-N-vinylpyrrolidone or copolymers of N-vinylpyrrolidone and vinyl acetate are especially useful for dyeing paper and wood and also for dyeing and finishing leather and fur.

Mixtures of sulfo-containing 1:2 metal complexes with vinyl polymers

Pyridone dyes useful for thermal transfer have the formula ##STR1## where R.sup.1 is hydrogen or C.sub.1 -C.sub.4 - alkyl,

N-aminopyridone dyes

Azo dyes of the formula ##STR1## where D is the radical of a diazo component, and

Sulfopyridones and a process of making therefor

Doubled acid azo dyes with a hydroxypyridone coupling component

Azo dye polymers useful in nonlinear optics contain as characteristic monomer units radicals of the formulae I, II, III and IV ##STR1## where D is the radical of a heterocyclic diazo component,

Azo dye polymers

Reactive dyes of the formula I ##STR1## where n is 0 or 1

Phenylazo- or naphthylazobenzenes having thioether groups

Reactive dyes of the formula ##STR1## where n is 0 or 1

Preparation of phenylazo- or naphthylazobenzenes having thioether groups

A process for preparing metal aminoformazans by alkaline hydrolysis of the corresponding acylated amino derivates in aqueous medium, is described, the hydrolysis being carried out at from 120.degree. to 170.degree. C. and from 3 to 5 bar in the presence of from 1.5 to 3 mol of an alkali metal hyroxide, based on 1 mol of acylated aminoformazan.

Preparation of aminoformazans

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,

Thiazoleazo dyes having a coupling component of the diphenylamine series

Growing community of inventors

Mutterstadt, Germany

Matthias Wiesenfeldt