Bayer Aktiengesellschaft

Robert Kuth

Werner Kuhnel

Rutger Neeff

Wolfgang Harms

Klaus Wunderlich

Dietrich Hildebrand

Gunter Gehrke

Wilhelm Gohrbandt

Karlfried Wedemeyer

Gerhard Wolfrum

Herbert Hugl

Reinhold Hornle

Hermann Perrey

Roland Rupp

Friedrich W Krock

Hans-Heinz Molls

Manfred Groll

Volker Hederich

Udo-Winfried Hendricks

Klaus-Peter Heise

Henning Reel

Hellmuth Pantke

Udo-Winifred Hendricks

Werner Kunnel

Karl Neufang

Wolfgang Bornatsch

The invention is directed to reactive azo dyestuffs, free from anionic groups and which contain a basic group and a halogenotriazinyl radical and are of the general formula ##STR1## in which D is the radical of an organic azo dyestuff which is free from anionic groups and is preferably free from basic groups,

Reactive azo dyestuffs, free from anionic groups and containing a basic

The light fastness of dyed polyamide fibre materials, in particular of the type used for manufacturing car seat covers, can be substantially improved by treating these materials, before, during or after the dyeing, with copper compounds of the compounds of the formula ##STR1## wherein R=H, OH, alkyl or cycloalkyl. The compounds (I) are distinguished by low self-colour and good stability to acid conditions.

Process for improving the light fastness of polyamide dyeings

Reactive dyestuffs which are free from anionic groups, in particular sulpho and carboxyl groups, and contain a basic group and a halogenotriazinyl radical, and their use for dyeing and printing synthetic fibre materials. The dyeing obtained are distinguished by good fastness properties, of which, in addition to fastness to sublimation, light and dry cleaning, fastness to wet processing is to be singled out in particular.

Halogenotriazinyl dyestuffs

Solid dyestuff formulations having excellent dyebath stability are obtained in an economical manner by mixing a water-insoluble textile dyestuff with a dispersant and a carboxyl-containing copolymer of

Solid dyestuff formulations containing ethylenically unsaturated acid,

Padding liquors or printing pastes which contain at least one compound which is free from ionic groups and possesses one or more glycicyl radicals are used for the one-bath, single-stage dyeing and printing of textile sheet-like structures of cellulose fibres or fibre blends containing cellulose fibres with water-insoluble reactive disperse dyestuffs in the absence of alkalis or alkaline compounds.

Process for the one-bath, single-stage dyeing or printing of cellulose

In order to dye and print cellulose fibres, which have been swollen with water-miscible swelling agents, or fibre mixtures containing such cellulose fibres, the fibres are treated with a dyestuff of the general formula ##STR1## wherein A denotes an optionally substituted anthraquinone radical, which can contain a further fused ring,

Process for dyeing and printing cellulose fibres

Dyestuffs of the formula ##STR1## wherein R represents C.sub.1 -C.sub.5 -alkyl which is optionally substituted by fluorine, chlorine, hydroxyl or methoxy, are outstandingly suitable for printing polymeric materials in accordance with the transfer printing principle in that they produce intensely colored prints on these materials, especially on polyester and polyamide fibre materials.

Transfer printing process and printing inks and temporary supports for

In order to dye and print cellulose fibres swollen with water-miscible swelling agents or fibre blends containing these fibres, the fibres are treated with a dyestuff of the general formula ##STR1## wherein Pc denotes the radical of a Cu phthalocyanine,

Padding liquors or printing pastes which contain at least one compound which is free from ionic groups and possesses one or more glycidyl radicals are used for dyeing and printing cellulose fibres or textile materials containing cellulose fibres with water-soluble reactive dyestuffs in the absence of alkalis or alkaline compounds.

Process for dyeing and printing cellulose fibres with reactive dyestuffs

For dyeing and printing cellulose fibres which have been swollen with water-miscible swelling agents or mixed fibres containing these fibres, the fibres are treated with dyestuffs which are free from sulphonic acid groups and carboxylic acid groups, of the general formula ##STR1## wherein R represents optionally substituted C.sub.1 -C.sub.6 -alkyl, cyclohexyl, C.sub.1 -C.sub.4 -alkoxy, phenyl, benzyl, phenylethyl, phenylpropyl or phenoxy, or chlorine or bromine,

In order to dye and print cellulose fibres swollen with water-miscible swelling agents or mixed fibres containing these fibres, the fibres are treated with dyestuffs which are free from sulphonic acid groups and carboxylic acid groups, of the general formula ##STR1## wherein R denotes hydrogen or optionally substituted alkyl, aryl or acyl,

For dyeing and printing cellulose fibers swollen with water-miscible swelling agents or fibre blends containing these fibres, the fibres are treated with dyestuffs of the general formula ##STR1## wherein R.sub.1 represents aryl,

Pressing of uniform shape and uniform weight of disperse dyestuffs and optical brightening agents with a solubility in water less than 0.5% at 20.degree.C which are suitable for an automate metering step and which disintegrate in aqueous dye baths to give dispersions are manufactured by compressing the dyestuff or brightening agent, an anionic dispersing agent and a solid water-soluble mould release agent which gives a neutral to weakly alkaline reaction in water.

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Cologne, Germany

Robert Kuth