Bayer Aktiengesellschaft

Bayer Aakatiengesellschaft

Karl H Schundehutte

Winfried Kruckenberg

Gerhard Wolfrum

Herbert Hugl

Kersten Trautner

Walter Kalk

Gunter Stephan

Manfred Soll

Hermann Henk

Horst Nickel

Manfred Groll

Volker Hederich

Manfred Lorenz

Josef W Stawitz

Henning Reel

Karl Ludwig Moritz

Erich Klauke

Otto Schallner

Bernd Baasner

Frank-Michael Stohr

Winfried Mennicke

Siegfried Oeckl

Hauke Furstenwerth

Erich Kramer

Karl J Herd

Jochen Westphal

Bernd Berger-Lohr

Hans Samuel Bien

Reactive dyestuffs of the formula ##STR1## in which the R=C.sub.1 -C.sub.5 -alkyl, cyclohexyl or aryl,

Reactive dyestuffs

Novel reactive dyestuffs of the formula ##STR1## having the substituent meanings specified in the description are highly suitable for dyeing and printing hydroxyl- and amido-containing textile materials. They produce very fast dyeings and prints in high yields.

Reactive phthalocyanine dyestuffs

Novel reactive dyestuffs of the formula ##STR1## wherein Pc=radical of a Cu- or Ni-phthalocyanine,

Reactive phthalocyanine dyestuffs containing a fluorochloropyrimidinyl

Pyrimidines substituted in the 5-position by fluorine, some of which are new, are prepared from pyrimidines of the formula ##STR1## in which R.sup.1 and R.sup.2 are identical or different and denote fluorine or trifluoromethyl, by stepwise reaction with hydrogen chloride.

New pyrimidines and a process for the preparation of pyrimidines

Benzothiazole derivatives of the formula ##STR1## with the substituent meanings mentioned in the description, are starting compounds for the preparation of new azo dyestuffs. Some methods of preparing the new benzothiazole derivatives are described.

Aminophenylbenzothiazoles

Quaternary compounds of the formula ##STR1## wherein K.sym. denotes a cationic organic radical,

Quaternary reactive compounds

2,4-Dihydroxypyrimidines of the formula ##STR1## with the substituent meanings given in the description, are obtained by reacting pyrimidines of the formula ##STR2## with the substituent meanings given in the description, with aqueous alkalis at elevated temperature. 2,4,5,6-Tetrachloropyrimidine is obtained from the dihydroxypyrimidines by reaction with agents which replace hydroxyl by chlorine.

Process for producing 2,4,5,6-tetrachloropyrimidine by way of

Azobarbituric acid derivatives characterized in that in their free acid form they have the following tautomeric structure are disclosed: ##STR1## The azobarbituric acid derivatives are characterized in that X and Y rings can each carry one or two substituents from the series comprising .dbd.O, .dbd.S, .dbd.NR.sub.7, --NR.sub.6 R.sub.7, --OR.sub.6, --SR.sub.6, --COOR.sub.6, --CN, --CONR.sub.6 R.sub.7, --SO.sub.2 R.sub.8, ##STR2## alkyl, cycloalkyl, aryl and aralkyl, the total number of the endocyclic and exocyclic double bonds for each of the rings X and Y being three. The new azobarbituric acid derivatives are other than those of azobarbituric acid, azouracil and uracil-5-azobarbituric acid and their salts. The compounds are useful as pigments which pigments are useful for pigmented paints, in printing inks, distempers or emulsion paints, inter alia.

Derivatives of azobarbituric acid or salts or complexes thereof

New inclusion compound, intercalation compounds or solid solutions which are the nickel salts or nickel complexes of a compound which, in one of its tauteromeric structures, corresponds to the formula ##STR1## which contain at least one other included compound, except for one composition of matter which consists of 45 to 82% by weight of azobarbituric acid/nickel 1:1 complex, 3 to 15% by weight of benzene-sulphonamide, 5 to 20% by weight of nickel acetate and 10 to 20% by weight of water and the use of these materials as pigments are disclosed.

Inclusion compounds, intercalation compounds, and solid solutions of

The reduction of azoxybenzene, azobenzenes and mixtures of azoxybenzenes and azobenzene to the hydrazobenzenes is possible under mild conditions, with high yields and without any great excess of reducing agents in the presence of raney-nickel and compounds which have an alkaline action with hydrogen or hydrazine hydrate.

Process for the preparation of benzene compounds

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

Azo dyestuffs of the formula ##STR1## wherein R.sub.1 represents H or --A--V

Azo dyestuffs

The invention relates to new dyestuffs of the general formula ##STR1## wherein the radicals D, R and R' have the meaning given in the text of the application, processes for their preparation and their use for dyeing materials containing hydroxyl groups or nitrogen.

Dyestuffs, processes for their preparation and their use for dyeing

A dyestuff of the formula ##STR1## wherein X.sub.1 denotes amino, cyanamino, acetylamino, guanidino, ureido or hydroxyl;

Water-insoluble azo-purimidine pigments and their use in coloring

Dyestuff formulations which contain a dyestuff with at least one of the groupings of the formula ##STR1## and an emulsifying polar-nonpolar compound, are outstanding suitable for dyeing synthetic fibres since they are well soluble in the dyeing bath and do not require expensive formulation process for their preparation. In the formulae, the symbols have the following meanings:

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Leverkusen, Germany

Karl H Schundehutte