Bayer Aktiengesellschaft

Horst Nickel

Erich Kramer

Frank-Michael Stohr

Peter Wild

Karl-Heinz Schundehutte

Hermann Henk

Karl H Schundehutte

Friedhelm Muller

Wolf-Eckhard Bleck

Ulrich Beck

Hans-Gunter Otten

Karl J Herd

Fritz Puchner

Peter Mummenhoff

Walter Scholl

Edgar Siegel

Fritz Suckfull

Hans-Joachim Vater

Triazine compounds which in their betaine form correspond to the formula ##STR1## wherein Y denotes hydrogen or the radical of an azo dye-stuff,

N-(hydroxy-sulpho-naphthyamino-triazinyl)-arylene-diamines

Trisazo/azoxy dyestuff mixtures which in the form of free acid correspond to the formula ##STR1## in which R denotes H or optionally substituted alkyl,

Trisazo/azoxy dyestuff mixtures

Water-soluble triazine compounds which, in their betaine form correspond to the formula ##STR1## wherein R.sub.1 denotes hydrogen or alkyl,

Piperazinyl-triazinylnaphtholsulphonic acid azo dyes

A metal free azo dyestuff of the formula ##STR1## in which K is the radical of a coupling component of pyridone, and

Reactive fluorotriazinylaminonaphthotriazolyphenylazopyridone or

Mixtures of dyestuffs of the formula I ##STR1## and of the formula II ##STR2## wherein R=alkyl,

Dyestuff mixture

Mixtures of a phthalocyanine dyestuff and a substantive azo dyestuff which preferably has cationic or basic groups are suitable for dyeing paper.

Phthalocyanine and azo dyestuff mixtures and their use for dyeing paper

Forgery-proof paper, which exhibits a distinct coloration when treated with an oxidizing agent and, if appropriate, a reducing agent, contains, as the reagent, a compound of the formula ##STR1## wherein A represents N or C,

Forgery-proof paper

Compounds which contain ammonium groups and sulphonic acid groups and which, in the betaine form, correspond to the formula ##STR1## wherein X denotes --CO-- or --SO.sub.2 --,

Naphtholsulphonic acid compounds, their preparation and use as coupling

Cationic azo dyestuffs of the formula ##STR1## wherein X.sup.(+) denotes an ammonium group, m denotes 0 or 1,

Processes for dyeing paper, and agents containing azo dyestuffs

Polyazo dyestuffs of the formula (I), and in particular those of the formulae (II) and (III), are obtained by co-reduction of the corresponding nitroazo compounds. The dyestuffs have a good affinity and a high brilliance and are particularly suitable for dyeing cotton and paper.

Polyazo dyestuffs, a process for their preparation and their use for

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

Azo dyestuffs of the formula ##STR1## wherein A, R.sub.1, m and n have the meaning given in the description. The dyestuffs are suitable for dyeing cellulose-containing materials, especially cotton, which may be natural or regenerated, as well as union fabrics containing cotton, and paper. The dyestuffs in general give red to violet, as well as reddish brown, color shades. The dyestuffs are distinguished by good light-fastness, substantivity and wet-fastness. Their great suitability for high temperature dyeing processes and for subsequent creaseproof finishing deserves particular mention.

Azo dyestuffs

Cationic azo dyestuffs of the general formula ##STR1## wherein X.sup.(+) denotes an ammonium group,

Cationic triazinylamino azo dyestuffs

Polyazo dyestuffs of the formula ##STR1## wherein D denotes the radical of a diazo component and

Pentakis-and heptakis-azoxy dyestuffs

Azo dyestuffs which, in the form of the free acid, correspond to the formula ##STR1## wherein R.sub.1 denotes hydrogen, methyl or chlorine,

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Leverkusen, Germany

Horst Nickel