Basf Aktiengesellschaft

Dystar Textilfarben Gmbh & Co. Deutschland Kg

Norbert Grund

Heinrich Hartmann

Guenter Hansen

Reinhard Schneider

Thomas Bechtold

Wolfgang Schrott

Manfred Niessner

Wolf-Dieter Kermer

Franz S&uuml;tsch

Georg Schnitzer

Johannes P Dix

Wilfried Heide

Reinhold Krallmann

Helmut Degen

Guenter Uhl

Hermann Kaack

Adolf Blum

Rudolf Kr&uuml;ger

Eduard Burtscher

Peter Maier

Hans-Peter Maier

Ingeborg Schermann

Wolfgang Hiebsch

Mediator systems obtainable by mixing one or more salts of a metal capable of forming a plurality of valence states with at least one amino-containing complexing agent (K1) and at least one hydroxyl-containing but amino-devoid complexing agent (K2) in an alkaline aqueous medium, wherefor the complexing agents may be present as salts and the molar ratio of K1 to metal ion is from 0.1:1 to 10:1 and the molar ratio of K2 to metal ion is from 0.1:1 to 5:1 are useful for dyeing cellulosic textile material.

Mediator systems based on mixed metal complexes, used for reducing dyes

Mediator systems obtainable by mixing a salt of an electrochemically active complexing metal (M1) capable of forming a plurality of valence states with a hydroxyl-containing complexing agent, which may likewise be present as salt, and with a salt of an electrochemically inactive complexing metal (M2) in an alkaline aqueous medium, wherefor the molar ratio of metal ion M2 to metal ion M1 is from 0.8:1 to 2:1 are useful for reducing dyes and dyeing cellulosic textile material.

From 5 to 60% by weight aqueous alkaline solutions of reduced indigoid dyes are prepared by reducing the indigoid dye electrochemically in the presence of a mediator.

Method for producing aqueous alkaline solutions or reduced indigoid dyes

A process is described for the preparation of finely divided polymer powders by polymerizing water-soluble monomers in the aqueous phase of a water-in-oil emulsion in the presence of water-in-oil emulsifiers and polymerization initiators, removing the water from the resultant water-in-oil polymer suspension by azeotropic distillation, and isolating the suspended, finely divided polymer powder, either the polymerization of the water-soluble monomers being carried out in the presence of from 0.1 to 10% by weight, based on the monomers employed in the polymerization, of protective colloids, or the protective colloids being added to the water-in-oil polymer suspension after the polymerization is complete. The polymerization is preferably carried out in the presence of surfactant. The finely divided pulverulent polymers are used as flocculants or thickeners for aqueous systems.

Preparation of finely divided polymer powders

Agglomerated polymer particles of finely divided, water-soluble or water-swellable polymers are prepared by azeotropic dewatering of water-in-oil emulsions of water-soluble or water-swellable polymers in the presence of from 1 to 40% by weight, based on the polymers, of polyalkylene glycols which

Agglomerated polymer particles of finely divided, water-soluble or

Abstract of the Disclosure: Crosslinked acrylic or methacrylic acid copolymers with crosslinkable groups that are useful as thickeners for textile print pastes are obtainable by copolymerization of

Crosslinked copolymers with crosslinkable groups based on acrylic or

An azo dye comprising a heterocyclic diazo component, of the general formula ##STR1## where D is a radical of the formula ##STR2## Y is nitro, chlorine or bromine, Z is hydrogen, chlorine, bromine, cyano or nitro,

Azo dyes comprising a heterocyclic diazo component

Dye mixtures which comprise two or more dyes of the formula ##STR1## ps where X is hydrogen, methyl or chlorine, and R is a radical of the formula OR.sup.1, OCOCH.sub.3, OCOC.sub.2 H.sub.5, R.sup.1 being hydrogen or C.sub.1 -C.sub.4 -alkyl, are very useful for dyeing cellulose esters.

Mixtures of benzisothiazole mono-azo dyes for cellulose acetate

Process for printing on synthetic fibers of polyester, triacetate, acetate and polyamide as well as mixtures of these substances with disperse dyes according to the discharge or reserve discharge process, wherein a mixture of

Process for printing on synthetic fibers: reducing agent and alkoxylated

Brown to violet azo dyes of the general formula ##STR1## where X and Y are chlorine or bromine, R.sup.1 is hydrogen, methyl, ethyl, chlorine, methoxy or ethoxy, R.sup.2 is hydrogen, chlorine, bromine, methyl, ethyl, methoxy, ethoxy, C.sub.1-4 alkanoylamino, benzoylamino or alkoxycarbonylamino, where alkoxy is of 1 to 4 carbon atoms, and the radicals R.sup.3 are identical or different, unsubstituted or substituted aliphatic, cycloaliphatic or aromatic radicals. The dyes may be used for dyeing synthetic fibers, especially polyesters, and give very fast dyeings.

Brown to violet substituted phenyl-substituted anilino azo dyes

P-aminoazo dyes of the formula: ##STR1## in which D is a benzoisothiazolyl group;

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Ludwigshafen, Germany

Norbert Grund