Bayer Aktiengesellschaft

Winfried Kruckenberg

Karl H Schundehutte

Henning Reel

Klaus Leverenz

Volker Hederich

Hans-Gunter Otten

Hubertus Psaar

Konrad Nonn

Michael Kressner

Georg Pape

Karl H Schuadehutte

Azo dyestuffs of the formula ##STR1## wherein R.sub.1 denotes hydrogen, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkoxyethoxy and

Benzisothiazole azo dye for synthetic fibers

Benzoisothiazole azo dyestuffs

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

Azo dyestuffs

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:

Azo polyether dyestuffs, formulations of these dyestuffs, their

Dyestuffs of the formula ##STR1## wherein R denotes hydrogen or alkyl,

Acetoacetic arylide azo dyestuffs for synthetic materials, especially

Azo dyestuffs of the formula ##STR1## wherein X denotes hydrogen, nitro or COOR.sub.1,

Azo dyes with carboxyl polyalkyleneoxy chain moiety

Dyestuffs of the formula ##STR1## wherein R.sub.1 represents hydrogen, alkyl or aralkyl,

Benzisothiazole azo dyestuffs containing polyether groups

Basic azo dyestuffs which are free from sulfonic acid and carboxylic acid groups and correspond to the formula ##STR1## wherein the radical have the below mentioned meaning, water-solubility and drawing speed and are used for dyeing and printing of polymers and copolymers of acrylnitrile, acid-modified polyesters or polyamides, and for dyeing of leather, tanned cotton, polyurethanes, writing liquids, lignin-containing fibres and for coloring of printing pastes.

Basic azo dyestuffs having benzylammoniumamine substituent in the

Formulations for dyeing polyesters and polyamides, the dyestuff component of which does not tend to crystallize in the dyebath and the effluents of which can be readily degraded biologically, are obtained in an inexpensive manner when those organophilic dyestuffs which have melting points below 140.degree. C., preferably below 100.degree. C., are used and these dyestuffs are homogeneously mixed with emulsifying polar/non-polar compounds, such as, for example, fatty sulphates and sulphonates, without expensive fine comminution processes.

Dyestuff formulations

Valuable dyestuff formulations for dyeing polyester fibres are obtained without expensive finishing techniques by simple mixing of emulsifiers with dyestuffs of the formula ##STR1## wherein A=alkylene,

Azo dyestuffs containing a naphthalic imide coupler and polyether groups

Dyestuffs, which are free from nitro groups and sulphonic acid groups, of the formula

Anthrachinone dyestuffs

Cationic azo dyestuffs containing oxyalkylene substituent

Dyestuffs of the formula ##STR1## WHEREIN R.sub.1 denotes halogen, alkyl, cycloalkyl, aralkyl, nitro, cyano, acyl, acylamino, amino, aminocarbonyl, aminosulphonyl, arylsulphonyl, alkylsulphonyl, alkoxy, aryloxy, aralkoxy, carboxyl, alkoxycarbonyl, aryloxycarbonyl or aralkoxycarbonyl or arylazo,

Pyrazolinyl indolium dyestuffs

Exhaustion process for dyeing synthetic fiber materials with dispersions of azo dyestuffs which contain carbamate groups, in organic water-immiscible solvents. The dyestuffs are distinguished by good drawing properties and good general fastness properties.

Process for dyeing synthetic fibre materials from an organic

Dyestuffs of the formula ##STR1## wherein B denotes (CH.sub.2).sub.n --R.sub.1 or alkenyl,

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Leverkusen, Germany

Winfried Kruckenberg