Bayer Aktiengesellschaft

Mobay Corporation

Dystar Textilfarben Gmbh & Co. Deutschland Kg

Oystar Textil Farben Gmbh & Co.

Klaus Kunde

Karl-Josef Herd

Hermann Henk

Wolfgang Harms

Manfred Hoppe

Wolfram Reddig

Frank-Michael Stohr

Peter Wild

Stefan Ehrenberg

Udo-Winfried Hendricks

Winfried Mennicke

Thomas Eizenhofer

Konrad Bootz

Knud Reuter

Klaus Wunderlich

Wolfgang Zarges

Stefan Meier

Artur Haus

Karl-Arnold Weber

Eckhard Bock

Jochen Westphal

Karl-Heinz Schundehutte, Deceased

Rolf Hinrichs

Walter Tames

Helmut P Prochaska

Frank-Michael Stuohr

Michael-Thomas J&ouml;rss

Metal complex dyes based on Bucherer naphthols

Reactive dyestuffs containing monohagenotriazine and vinylsulfone groups, their preparation and use

Azo dyes

The invention relates to novel disazo dyes of the formula

Disazo dyes

The new disazo dyestuffs of the formula (I) ##STR1## wherein the substituents and the indices have the meanings given in the description, wherein more than 25 equivalent % of all the M cations in the molecule are alcohol ammonium radicals of the formula .sup..sym. NR.sub.1 R.sub.2 R.sub.3 R.sub.4 wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another represent hydrogen, C.sub.1 -C.sub.4 -alkyl and C.sub.2 -C.sub.4 -hydroxyalkyl, with the proviso that at least one of the radicals R.sub.1 -R.sub.4 denotes C.sub.2 -C.sub.4 -hydroxyalkyl, are excellently suitable for dyeing cellulose-containing materials, and in particular paper, and are distinguished by high degrees of fastness.

Disazo dyestuffs

Reactive dyestuff of the formula ##STR1## wherein D is a radical of a monaozo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthone or nitroaryl organic dyestuff, a process for their preparation and their use for dyeing fiber materials containing OH groups and NH groups have been found.

Reactive dyestuffs containing monohalogenotriazine and vinylsulfone

The present invention relates to a novel process for the preparation of aminodiarylazo compounds by reducing nitrodiarylazo compounds using 1,2-alkanediols or 1,2-aminoalkanols.

Process for the preparation of aminodiarylazo compounds

The novel process for dyeing cellulosic materials with disazo dyestuffs of the formula ##STR1## in which the substituents NHR.sup.1 and NHR.sup.2 are in each case in the 6- and/or 7-position and R.sup.1, R.sup.2, m, n, p and q have the meaning given in the description, produces blue dyeings with very good fastness properties.

Process for dyeing cellulosic materials with disazo dyestuffs

Process for the preparation of reactive azo dyes

The novel dyestuffs of the formula (I) ##STR1## in which the substituents R and X have the meaning given in the description, are outstandingly suitable for dyeing cellulosic materials in blue color shades which are particularly fast to light.

Light-fast disazo dyestuffs

The novel disazo dyestuffs of the formula (I) ##STR1## in which the substituents and indices have the meaning given in the description, are outstandingly suitable for dyeing cellulosic materials, in particular paper, and are distinguished by good fastness properties.

The novel aminomethylnaphthalenecarboxylic acid dyestuffs of the formula (I) ##STR1## in which the substituents and indices have the meaning given in the description, are outstandingly suitable for dyeing cellulosic materials, in particular paper.

Aminomethylnaphthalenecarboxlic acid dyestuffs

The invention relates to a process for the preparation of compounds of the formula ##STR1## characterized in that the radical X in sulphones of the formula

Process for the preparation of sulphones

Reactive dyestuffs, a process for their preparation and their use and novel intermediates and a process for their preparation. Reactive dyestuffs of the formula (I) ##STR1## are described, in which A denotes a radical of the formula ##STR2## B denotes a bridging member, and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and X have the meanings given in the description.

Disazo reactive dyestuffs

Growing community of inventors

Neunkirchen-Seelscheid, Germany

Klaus Kunde