Ciba-geigy Corporation

Ernst Tempel

Alois Puntener

Peter Moser

Paolo Balliello

Hans Altermatt

Paul Erzinger

Roberto Galli

Pia Grimbu/ hler-Can

There is disclosed a process for dyeing leather by the exhaust process, which comprises treating leather with an aqueous liquor which contains a formulation comprising a black anionic dye and a sulfonated carbon black. The leather dyeings obtained by this process have good allround fastness properties.

Process for dyeing leather with an aqueous bath containing sulfonated

Concentrated, aqueous preparations of 1:2 metal complex dyes which contain 10 to 30% by weight of a 1:2 metal complex dye, 3 to 25% by weight of an anionic dispersant, 1 to 15% by weight of a polyhydroxy compound and 0 to 25% by weight of a customary formulation assistant, in each case based on the total preparation, and water in an amount such that the sum of all the components is 100%, have an excellent stability, are readily pourable and can be diluted with water as desired, and are therefore particularly suitable for the preparation of dyebaths or printing pastes which are employed, in particular, for continuous dyeing or printing of textile fibrous materials of synthetic polyamide.

Liquid metal complex dye preparations, process for their preparation and

Aqueous dispersion of a sulfonated metallizable dye containing

Aqueous dispersion of a metallizable dye and sulfonated aromatic

A solid formulation comprising at least one water-soluble anionic dye, additional optional assistants and a combination of an ethoxylated stearyl diphenyloxyethyl diethylenetriamine and at least one anionic dispersant. Such formulations are distinguished in particular by very good hot water solubility.

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Riehen, Switzerland

Ernst Tempel