Bayer Aktiengesellschaft

Karl-Heinz Schundehutte

Hermann Henk

Frank-Michael Stohr

Karl-Josef Herd

Horst Nickel

Erich Kramer

Erich Klauke

Kurt Findeisen

Bernd Baasner

Gunther Beck

Gerhard Wolfrum

Wolfgang Harms

Manfred Hoppe

Herbert Hugl

Richard Sommer

Winfried Mennicke

Rolf Brockmann

Thomas Eizenhofer

Kersten Trautner

Walter Scholl

Karl-Ludwig Moritz

Wolf-Eckhard Bleck

Uwe Mayer

Reactive dyestuffs of the formula ##STR1## in which ##STR2## and Z=a heterocyclic reactive group and the remaining groups have the meaning indicated in the description, are outstandingly suitable for dyeing and printing materials containing hydroxyl groups or amide groups.

Reactive dyestuffs

Dyestuffs of the formula ##STR1## in which the substituents have the meanings given in the description are suitable for the dyeing and printing of hydroxyl- and amido-containing materials.

Formazan dyestuffs

Reactive dyestuffs of the formula ##STR1## in which the substituents have the meanings given in the description, are highly suitable for the dyeing and printing of hydroxyl- and nitrogen-containing materials, such as cellulose, wool, silk, polyamides, polyurethanes.

The new polyazo reactive dyestuffs of the formula ##STR1## in which the substituents have the meaning given in the description are highly suitable for the dyeing or printing of hydroxyl- or amido-containing materials. The dyeings and prints obtained are distinguished by high fibre-dyestuff bonding stability and by particularly good stability to oxidizing agents.

Polyazo reactive dyestuffs containing the

New process for the preparation of 4,5,6-trichloropyrimidine, characterized in that a protonated dialkylaminopropionitrile of the general formula I ##STR1## in which R is C.sub.1 -C.sub.4 -alkyl and an.sup.- is an anion is treated with chlorine in an inert solvent in the presence of organic catalysts or PCl.sub.3 or PCl.sub.5.

Process for the preparation of 4,5,6-trichloropyrimidine

Chlorine-containing pyrimidines are selectively hydrogenated with elimination of hydrogen chloride, without other substituents and/or the aromatic ring being significantly attacked, by using a hydrogenation catalyst and a hydrogen chloride acceptor. This process gives predominantly new pyrimidines.

Process for the selective hydrogenation of chlorine-containing

Optionally metallized azo dyestuffs which in the form of the free acid correspond to the formula ##STR1## wherein K is the radical of a benzene, naphthalene, pyrazolone, pyridone, pyrimidone, acetoacetic acid arylide or aminopyrazole coupling component;

Azo reactive dyestuffs having an aryl-triazinyl-aryl diazo component

Unsymmetrical chromium mixed complex dyestuffs of the formula ##STR1## wherein R.sub.1 and R.sub.2 denote C.sub.1 -C.sub.4 -alkyl, nitrile, carbonamide or X-Z, X denotes a direct bond or a bridge member to a C atom of the rings A, B, C or D or to a 3-C atom of the pyrazoles and Z denotes SO.sub.3 H, COOH or OSO.sub.3 H and A, B, C and D can possess further substituents, are suitable for the dyeing and printing of nitrogen-containing fibrous materials in yellow shades.

Chromium mixed complex dyestuffs of phenyl-azo-pyrazole components

Reactive dyestuffs of the formula: ##STR1## wherein R is H, alkyl or aryl,

Reactive azo dyestuffs from diazotized sulfo-amino naphthalenes and

The invention relates to polyazo dyestuffs of the formula ##STR1## in which R denotes hydrogen, methyl or chlorine,

Polyazo dyestuffs having a dianisidine component, a diaminophenyl

Cationic dyestuffs of the formula ##STR1## WHEREIN A and B denote aromatic-carbocyclic or aromatic-heterocyclic radicals,

Oxadiazepine cationic dyestuffs

Azo dyestuffs of the formula ##STR1## in which D represents the radical of a diazo component,

Azo dyestuffs containing aminopyridone coupling component

Dyestuffs of the formula ##SPC1## Wherein

Azo dyestuffs containing sulfonylamino-sulfonyl groups

Azo dyestuffs of the formula ##SPC1## Wherein A and B are different radicals of an aromatic coupling component are described. The new dyestuffs are outstandingly suitable for dyeing and printing natural or synthetic fibre materials containing hydroxyl groups and nitrogen like wool, wool-cotton union, silk, high molecular polyamide as well as paper pulp and paper materials and leather to give dyeings havings good fastness properties.

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Leverkusen, Germany

Karl-Heinz Schundehutte