Ciba-geigy Corporation

Roland Putzar

Hans-Ulrich Berendt

Alain Lauton

Rudolf Schaulin

Urs Karlen

Marc Burglin

Gustaaf Scherer

Hans Fierz

Reinhart Mockel

A stable and low-foaming composition for finishing synthetic fibres which contains, based on (a)+(b)+(c)

Low-foaming composition for finishing synthetic fibres: dye or optical

The invention relates to storage-stable aqueous formulations of water-insoluble or sparingly water-soluble solids which contain an electrolyte-sensitive thickener in addition to a dispersant. During storage, even for considerable periods of time, these formulations form no sediment and can be diluted by stirring in a small amount of electrolyte (e.g. a salt) and are then ready for use.

Storage-stable formulations of water-insoluble or sparingly

There are described dye mixed crystals consisting of 1 part of the dye of the formula ##STR1## and 0.5-5 parts of the dye of the formula ##STR2## the production thereof, and their use for dyeing and printing hydrophobic fiber materials, particularly polyester materials. Blue dyeings having a good dye build-up are obtained.

Dye mixture of 1,4-diamino anthraquinone-N-gamma-methoxy

The invention relates to powdered, stably dispersible dye formulations which do not foam on application, and to a process for their preparation. In addition to containing one or more disperse dyes and an anionic dispersant or mixture of dispersants, these formulations contain 0.01 to 10% by weight, based on the final formulation, of a non-ionic reaction product of ethylene oxide and propylene oxide with a low molecular polyol, said reaction product having a molecular weight in the range from 200 to 5000 and a cloud point in the range from -20.degree. to +130.degree. C. The formulations are particularly suitable for dyeing under HT conditions in half-filled dyeing machines.

Powdered, stably dispersible, non-foaming dye formulations and process

In a process for the preparation of concentrated aqueous formulations of synthetic anionic dispersants, dilute reaction solutions of said dispersants are subjected to reverse osmosis using membranes which contain ionic groups and have a pore diameter of 1 to 500 .ANG.. The dispersant formulations have a high concentration of active ingredient. They are suitable for the preparation of pigment and dye compositions and impart excellent stability to them, e.g. at elevated temperature and against mechanical influences.

Process for the preparation of concentrated aqueous formulations of

A dye preparation containing at least one dye insoluble or difficultly soluble in water, an anionic or nonionic dispersing agent, at least one metal complex consisting of a polyvalent cation and at least one complexing agent, and optionally further additives, water and/or organic solvent.

Process and dye preparations for pad-dyeing

Sulphonated condensation products which are obtained, irrespective of sequence, by reaction of an aromatic compound that contains at least two replaceable hydrogen atoms in the nucleus with a compound of the formula ##STR1## wherein X represents the direct bond or oxygen, Hal represents chlorine or bromine, and n is a number from 1 to 4, and sulphonation, and optionally by further condensation with formaldehyde or formaldehyde donors. The sulphonated condensation products are particularly effective as levelling agents and dispersants.

Growing community of inventors

Hofstetten, Switzerland

Roland Putzar