Bayer Aktiengesellschaft

Lanxess Deutschland Gmbh

Peter Wild

Frank-Michael Stohr

Karin Hassenruck

Horst Nickel

Uwe Claussen

Klaus Wunderlich

Hermann Henk

Klaus Kunde

Gunter Franke

Horst Berneth

Roderich Raue

Wolfgang Harms

Friedrich W Krock

Martin Michna

Thomas Sommermann

Karl-Heinz Reinhardt

Volker Paulat

Gerd-Friedrich Renner

Wolfgang Frank

Dieter Ockelmann

Rolf Hinrichs

Werner Hartwich

Shaun Murphree

Michael-Thomas J&ouml;rss

The invention relates to mixtures containing the dye C.I. Acid Red 82 (formula IIb) and C.I. Acid Red 80 (formula IIc) 

Acid Red 82 in mixtures

Azo dyes

Process for the preparation of low-salt liquid dyestuff preparations, characterized in that they are obtained by:

Process for the preparation of low-salt, liquid dyestuff preparations

Compounds of the formula (I) ##STR1## have been found which are suitable for dyeing and printing hydroxyl- and/or amido-containing substrates, in particular for printing paper by the ink-jet method.

Tetrazo dyestuffs

Dyestuffs of the formula (I) ##STR1## wherein R.sup.1 and R.sup.4 independently of one another represent an acyl radical,

Direct disazo dyestuffs

The new dyestuffs of the formula (I) ##STR1## wherein the substituents R and R.sup.1 and the index n have the meaning given in the description, are outstandingly suitable for dyeing and printing cellulose-containing materials, in particular for the preparation of recording liquids for ink jet recording systems.

Azodyestuffs, their preparation and their use

New azo dyestuffs of the formula (I) ##STR1## wherein n in each case independently of one another represents 0 or 1,

Azo dyestuffs for dyeing and printing cellulose-containing fiber

A process has been found for dyeing and printing pater, wood, plastic or metal, in which dyestuffs which, in the form of the free acid, correspond to the formula (I) ##STR1## wherein A denotes a phenol radical which is optionally substituted by alkyl or cycloalkyl and n represents 0 or 1,

Dyestuffs for printing inks

Cationic 1,3,4-thiadiazole dyestuffs of the formula ##STR1## in which the symbols used have the meaning given in the description, corresponding anhydrobases, processes for the preparation of the cationic 1,3,4-thiadiazole dyestuffs, their use for dyeing and printing various materials and as dichroic dyestuffs in polarizing films, and various materials which comprise such dyestuffs.

Cationic thiadiazole dyestuffs

Novel dyestuffs of the formula (I) ##STR1## in which DK denotes a radical of the formula ##STR2## where m is 1 or 2 and DK' denotes a radical of the formula ##STR3## where n is 1 or 2 R.sub.1 represents hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkyl,

Triazinyl-amino bridge-containing disazo dyestuffs

The new basic azo dyestuffs of the formula ##STR1## wherein the symbols have the meaning given in the description, are suitable for dyeing synthetic and naturally occurring substrates which can be dyed with basic dyestuffs.

Basic azo dyestuffs of the 3-cyano-2,4,6-triamino pyridine series

The dyestuff mixtures comprising the dyestuff of the formula (I) ##STR1## and a dyestuff of the formula ##STR2## wherein R.sub.1 and R.sub.2 independently of one another represent alkyl, cycloalkyl or aryl, and/or tautomeric forms of the dyestuffs of the formulae (I) and/or (II), are particularly suitable for the preparation of concentrated, storage-stable dyestuff solutions which, apart from a small amount of alkanolamines, comprise no further water-soluble organic solubilising agents.

Dyestuff mixtures

Light-polarizing films or foils, preferably based on a vinyl alcohol homopolymer or copolymer, contain dyes corresponding to the following formula ##STR1## in which R, R.sup.1, T.sup.1, T.sup.2, n, X and Z are as defined in the specification.

Light-polarizing films or foils containing triphendioxazine or

Dyestuffs of the formula ##STR1## in which the substituents have the meanings given in the description are highly suitable for the coloration of paper. They produce light and wetfast blue coloring.

Process for the coloring of paper with disazo dyes containing

Basic dyestuffs of the formula ##STR1## or tautomeric forms thereof, wherein

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Odenthal, Germany

Peter Wild