Ciba-Geigy Corporation

Ciba-Geigy Ag

Ciba-Geiegy Corporation

Zdenek Koci

Hans Mollet

Raymond Defago

Alain Lauton

Andres Schaub

Paul Hugelshofer

Suresh C Agarwal

Peter Zbinden

Ulrich Irmiger

Aqueous dye formations: water insoluble dye and ethoxylated sulfated

Aqueous dye preparations are described which contain 15-40% by weight of dyes, 3-18% by weight of an anionic dispersant of the formula (1), 1-10% by weight of sodium lactate, 1-10% by weight of glycerol and/or propylene glycol, 0.1-5% by weight of a compound having monomer units of the general formula (2), 3-10% by weight of betaine monohydrate, 0-4% by weight of a compound having monomer units of the general formula (3) and 0.1-15% by weight of customary auxiliaries; preparations of this type have a long shelf life, are highly redispersible and do not form sediments; they are suitable in particular for the continuous dyeing of polyester textile materials or mixtures thereof with cellulose textile materials.

Aqueous dye preparations: water-insoluble dye, anionic dispersant,

Specific vatting accelerators according to claims 1 and 2 are described. These can be added to a vat dye or sulfur dye composition, or to a dye bath or printing paste containing a vat dye or sulfue dye, by virtue of which an improvement of dye yield, particularly on cellulose materials, is obtained.

Vat dye and sulfur dye compositions

The invention relates to aqueous/organic or purely organic solutions of anionic dyes, the principal feature of which solutions is that they contain the dye or dyes, dissolved in a C.sub.1 -C.sub.4 monoalkyl ether of propylene glycol, or of butylene glycol, or in a C.sub.1 -C.sub.4 carboxylic acid ester thereof, or in a mixture of these solvents. Such dyestuff solutions are storage stable and are especially suitable for spray dyeing leather.

Solutions of anionic dyes with alkylene glycol mono-alkyl ethers

Specific vatting accelerators according to claims 1 and 2 are described. These can be added to a vat dye or sulfur dye composition, or to a dye bath or printing paste containing a vat dye or sulfur dye, by virtue of which an improvement of dye yield, particularly on cellulose materials, is obtained.

The invention relates to aqueous dyestuff formulations which contain at least one telomer of the formula I ##STR1## or a salt thereof, in addition to at least one anionic dispersant and optionally further ingredients. In formula I the symbols have the following meanings: X is hydrogen or ##STR2## Y is hydrogen, --SO.sub.4 H or ##STR3## each of R.sub.1 and R.sub.2 independently of the other is hydrogen, C.sub.1 -C.sub.4 alkyl which is unsubstituted or substituted by a carboxyl group or is carboxyl; and the sum of n+m is an integer from 2 to 350. These compositions have good storage stability and redispersibility and are particularly suitable for use in the continuous dyeing process.

Aqueous formulations of water-insoluble or sparingly water-soluble dyes

The invention relates to a process for the preparation of storage stable compositions of sparingly soluble or water-insoluble colorants, which process comprises mixing an aqueous suspension of at least one sparingly soluble or water-insoluble colorant with at least one surface-active substance, subjecting the mixture to ultrafiltration through an asymmetrical membrane which contains ionic groups and has a pore diameter of 1 to 500 .ANG. and a cut-off level in the molecular weight range from 300 to 500, subsequently subjecting the resultant concentrate to wet grinding and, if desired, drying, in particular spray drying the dispersion so obtained. The colorant compositions are particularly suitable for preparing padding liquors, dyebaths and printing pastes for coloring and printing textile materials, especially those made from cellulose and synthetic polyester.

Process for the preparation of storage stable colorant compositions by

Dyes difficultly soluble or insoluble in water are used together with specific auxiliaries to dye or print textile material made from cellulose fibres, or mixtures thereof with synthetic fibres. These auxiliaries effect an increased dye yield, particularly on the cellulose material, and level tone-in-tone dyeings on mixed fabrics.

Process for printing or pad dyeing of textile material made from

Aqueous dye preparations having a migration-regulating action and containing at least one dye insoluble in water, a dispersing agent and at least one further additive, which preparations are characterized in that they contain at least one water-soluble polymerization product containing carboxyl groups.

Aqueous dye preparations

Solid dye preparation containing at least one water-soluble dye, a lactam of the formula ##STR1## wherein x represents the numbers 3 to 6, and optionally further additives.

Dye preparation

Disclosed is a solid preparation containing at least one anionic dye or optical brightener, at least one anionic compound having hydrotropic activity, and/or at least one anion-active solubilising agent as well as optionally further additives, such as and preferably a anti-dust agent, whereby this preparation has a very good solubility especially in cold water compared with that of equally strong dyes diluted with customary fillers and can be used for producing aqueous dye preparations useful for dyeing and printing materials dyeable with anionic dyes or optical brighteners.

Dye preparation soluble in cold water

Transfer printing process for dyeing or optical brightening of hydrophilic fibre material, synthetic fibre material, or mixtures of hyrophilic and synthetic fibre material with transferable dyestuffs or optical brighteners, characterized in that for dyeing or optical brightening inert temporary carriers are used which are treated with at least one transferable dyestuff or optical brightner, at least one solid compound which melts during the heat exposure of the transfer process and has a vapor pressure above 10.sup.-5 mm Hg at 150.degree. to 250.degree. C and, optionally, a binder which is stable below 230.degree. C.

Transfer printing process for hydrophilic, synthetic fibre material or

Dyestuff granulates of anionic dyestuffs are described, the said granulates containing anionic dyestuff, optionally together with a surface-active agent and/or further auxiliaries, dissolved in a melt of urea, which granulates are solid, non-dusty, noncaking, and very easily and rapidly soluble or dispersible even in cold water, and are particularly suitable for the production of aqueous dye preparations, which can be used for the dyeing and printing of the widest variety of materials.

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Binningen, Switzerland

Zdenek Koci