Hoechst Aktiengesellschaft

Cassella Aktiengesellschaft

Societe Francaise Hoechst

Ulrich Karsunky

Sienling Ong

Helmut Schmidt

Friedrich Engelhardt

Paul Mallo

Thomas Martini

Karl-Heinz Keil

Alwin K Reng

Jochen M Quack

Klaus Sternberger

Werner Skrypzak

Horst-Roland Mach

Wolfram Schidlo

Isabelle Fietier

Josef Sauer

Anna G Morrison

Kerstine Rabas

Self-reversible, stable, water-in-oil dispersions, miscible with water, constituted by an oil phase, an aqueous phase and at least two emulsifying agents of which at least one is of water-in-oil type, and at least one is of oil-in-water type, which contain 20 to 50% by weight of a mixture constituted by a hydrosoluble anionic polymer belonging to the group of carboxymethylcelluloses (C), and by a cross-linked, synthetic anionic polymer, insoluble in water but water-swellable (P), based on acrylic acid (AA), partially salified with an alkali metal (M), optionally copolymerized with 2-acrylamido 2-methyl propanesulphonate of the alkali metal M (AMPSM), cross-linked with a diethylenic carboxylic acid and in which the molar ratio of the salified acid functions to the total number of free or salified acid functions is comprised between about 0.6 and about 0.9, the ratio by weight C/P+C being comprised between 0.01 and 0.4, preparation process and use for obtaining a printing paste.

Thickening water-in-oil dispersions, their preparation process and their

Pigment printing process for flame-retardant, low-flammability or nonflammable fibers On being printed with conventional pigment print pastes low-flammability fibers lose their flame-retardant properties in the areas covered with the print paste. It was therefore necessary to find a binder system which itself has low-flammability properties. By using polymers and/or copolymers of vinylidene chloride as pigment binder system the low flammability of such special types of fiber is not impaired.

Pigment printing process for flame-retardant, low-flammability or

Process for dyeing textile material with pigment dyes, which comprises

Dyeing textile material with pigment dyes: pre-treatment with quaternary

Process for the preparation of copolymers from acrylamide and acrylic or methacrylic acid, wherein to prepare 100 parts by weight of the copolymer, (A) 10-90 parts by weight of acrylamide, (B) 90-100 parts by weight of acrylic acid and/or methacrylic acid or of a salt thereof, (C) 0-40 parts by weight of another copolymerizable monomer and (D) 0-5 parts by weight of a copolymerizable crosslinking agent which has two or more olefinic double bonds are polymerized in an alcohol having 1-4 carbon atoms by precipitation polymerization such that 10-90% by weight of the alcohol, 10-90% by weight of the total amount of monomers (A), (B) and (C) together with 100% by weight of the crosslinker substance are initially mixed, polymerization is started with 10-100% by weight of the initiator and then the remainder of the solvent, monomers, crosslinking agent and initiator to make up to 100% is metered in, as individual components or as a mixture, after the polymerization has started.

Process for the preparation of copolymers

The viscosity of aqueous printing inks for gravure printing is adjusted by means of partially organophilic gels which contain plastics mixtures of at least one polymer swelling in water and at least one polymer not swelling in water or to an insignificant extent only, in a solvent mixture of at least two hydrophilic organic hydroxy compounds and one hydrophobic organic hydroxy compound. The printing inks prepared with the aid of the thickener mixtures of the invention contain up to 90% of water, and can be handled as textile printing pastes. Gravure printing inks on the basis of such plastics gels containing disperse dyestuffs are suitable for the manufacture of transfer printing paper sheets. Since the thickening system adjusting the viscosity contains aqueous alcohols, if any, and no solvents as usual in transfer printing inks, no special measures have to be taken with respect to flammability and explosion risks.

Thickener mixtures, process for the manufacturing of transfer printing

Thickener mixture for the manufacture of aqueous printing inks for

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Hunfelden, Germany

Ulrich Karsunky