Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Roger Lacroix

Peter Scheibli

Mickael Mheidle

Roland Haberli

Jean-Marie Adam

Janos Vincze

Urs Lehmann

Petr Kvita

Hans Mollet

Beat Bruttel

Edmond Ruhlmann

Ulrich Strahm

Heinz Pfenninger

Paul Hugelshofer

Hans-Rudolf Marfurt

Roland Changtelain

The invention relates to a method of printing sheet-form substrates by the inkjet printing process, which method comprises printing those materials with an aqueous ink comprising a) at least one dye of formula wherein

Method of printing sheet-form substrates by the inkjet printing process

The invention relates to a method for printing fibrous textile materials using the ink-jet printing technique, wherein the fibrous materials are printed with an aqueous ink that comprises at least one acid dye according to claim 1 and that has a viscosity of from 1 to 40 mPa&middot;s.

Method for printing fibrous textile materials using the ink jet technique

Dye mixtures which contain a dye of the formula ##STR1## together with a dye of the formula ##STR2## in which M.sup.+ in the dyes of the formulae (1) and (2) are ammonium cations ##STR3## which are identical to or different from one another, of an amine of the formula ##STR4## where R.sub.1 and R.sub.2 independently of one another are hydrogen, C.sub.1 --C.sub.6 alkyl or C.sub.2 --C.sub.6 alkyl substituted by hydroxyl or amino and, if appropriate, interrupted by an oxygen atom, and R.sub.3 is C.sub.2 --C.sub.6 alkyl substituted by hydroxyl or amino and, if appropriate, interrupted by an oxygen atom, afford dyeings having good fastnesses on nitrogen-containing or hydroxyl group-containing fibre materials.

Dye mixtures and their use

Concentrated aqueous dye solutions, which comprise 5 to 50% by weight of at least one dye of formula (1) ##STR1## wherein X and Y are each independently of the other hydrogen or C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, and Z is C.sub.2 -C.sub.6 alkanoylamino or C.sub.2 -C.sub.4 hydroxyalkylsulfamoyl, M.sup.+ is the ammonium cation ##STR2## of an amine of formula ##STR3## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, C.sub.1 -C.sub.6 alkyl, or hydroxy- or amino-substituted C.sub.2 -C.sub.6 alkyl which may be interrupted by an oxygen atom, and R.sub.3 is hydroxy- or amino-substituted C.sub.2 -C.sub.6 alkyl which may be interrupted by an oxygen atom, with the proviso that R.sub.1, R.sub.2 and R.sub.3 are not a radical of formula --CH.sub.2 --CH(OH)--CH.sub.3 if X and Y are methyl and Z is 2-hydroxyethylsulfamoyl or if X and Y are hydrogen and Z is propionylamino, have good storage stability and give dyeing having good fastness properties on hydroxyl group-containing or nitrogen-containing fibre materials.

A process for printing textile fiber materials in accordance with the ink-jet printing process, wherein the fiber materials are printed with an aqueous ink comprising a) at least one reactive dye of formulae (1a) to (1i) as indicated herein and b) 1,2-propylene glycol or N-methyl-2-pyrrolidone. The process is especially suitable for printing cellulosic fiber materials. The prints obtained have good fastness properties while having a high color yield.

Process for printing textile fibre materials in accordance with the

A process for printing textile fiber materials in accordance with the inkjet printing process, wherein the fiber materials are printed with an aqueous ink, comprising

A process for printing textile fiber materials in accordance with the ink-jet printing process, wherein the fiber materials are printed with an aqueous ink comprising a) at least one reactive dye of formula ##STR1## or at least one reactive dye of formula ##STR2## wherein the substituents are as defined in claim 1, and b) a water-soluble, non-ionic cellulose ether or an alginate.

Process for printing textile fiber materials in accordance with the

The invention relates to a stable, dust-free commercial form comprising at least one water-soluble monoreactive dye which comprises a monofluoro-s-triazine reactive radical, and/or at least one water-soluble polyreactive dye in a polyvinyl alcohol envelope. The dyeings obtained with the stable, dust-free commercial form are distinguished by good general fastness properties.

Polyvinyl alcohol envelopes of low air content as packing material for

The invention describes a process for the preparation of concentrated aqueous, substantially salt-free solutions of aminotriazinyl reactive dyes, which process comprises starting from a dye which contains sulfo groups and one or more radicals capable of reaction with cyanuric halide, said dye being at least partly in the form of the ammonium salt, reacting said dye with cyanuric halide, in the presence of lithium hydroxide, and deionizing and concentrating the salt-containing synthesis solution by a membrane separation process. The so prepared mixed lithium/ammonium salts of the acid aminotriazinyl reaction dyes are readily water soluble and are suitable for the preparation of concentrated storage stable dye solutions.

Process for the preparation of concentrated aqueous, substantially

Concentrated aqueous dye formulations of water-soluble organic dyes are prepared by desalination and concentration of corresponding crude dye solutions by means of membrane separation processes. The effectiveness of the membrane separation process on the one hand and the stability of the dye formulations on the other hand is improved if dye solutions are subjected to cross-flow microfiltration before and/or after the membrane separation process and insoluble constituents are thus removed.

Process for the preparation of concentrated aqueous dye formulations of

There are described new anthraquinone compounds which, in the form of the free acid, correspond to the formula I ##STR1## wherein the X's independently of one another are each a straight-chain or branched-chain alkyl group having 1 to 4 carbon atoms, Y is hydrogen or is the same as X, and wherein the phenyl rings a can also be substituted by one or more halogen atoms, the production and use thereof, and also dye solutions containing a solvent mixture consisting of one or more aprotic solvents, at least one glycol and/or glycol ether, and optionally water and further additives, which solutions contain in each case a mixture of two anthraquinone dyes which, in the form of the free acid, correspond to the formulae I and IV ##STR2## wherein the X's independently of one another are each a straight-chain or branched-chain alkyl group having 1 to 4 carbon atoms, Y is hydrogen or is the same as X, and wherein the phenyl rings a can also be substituted by one or more halogen atoms.

Anthraquinone compounds and the production and use thereof

A process is described for converting sparingly soluble salts of anionic dyes and fluorescent brighteners into more soluble salts by means of cation exchange without intermediate isolation of the free dye acid, which comprises carrying out the cation exchange by using Donnan dialysis. The concentrated dye and brightener solutions obtained in this way are stable and can be directly used for dyeing or printing textile material.

Process for converting sparingly soluble salts of anionic dyes and

The invention describes a process for the preparation of stable aqueous solutions of water-soluble reactive dyes, starting from an aqueous solution or suspension of the crude reactive dye which is concentrated and at least partially desalted by a membrane separation process. The process of the invention comprises continuously replacing part of the water which is drawn off from the dyestuff solution or suspension during the membrane separation process with demineralized water, whereby the concentration of calcium and magnesium ions in the dyestuff solution does not exceed 0.01% by weight. The concentrated and desalted dyestuff solution is stabilized by addition of a polyphosphate or dihydrogen phosphate/polyphosphate buffer, and a component which improves the water-solubility of the dye is optionally added. The formulations so obtained are readily storable for several months in the temperature range from -10.degree. to +40.degree. C.

Process for the preparation of stable aqueous solutions of water-soluble

A process for the preparation of storage-stable concentrated fluid dye compositions of water-soluble dyes, wherein an aqueous solution or suspension of at least one anionic crude dye is passed over a semi-permeable membrane containing ionic groups and having a pore diameter of 1 to 500 .ANG., to remove salts and synthesis by-products of molecular weights less than 500 and to partially remove water, optionally dried, and mixed with a water-miscible organic solvent and, if desired, further additives, before and/or after passage over the semi-permeable membrane. The fluid dye compositions obtained are particularly suitable for use in spray solutions for dyeing leather, as well as for the dying and printing of textile materials, in particular cellulosic fibres.

Process for the preparation of concentrated fluid dye compositions

A liquid preparation of an anionic dye of the disazo class, which preparation contains the disazo dye, which in the form of the free acid corresponds to the formula ##STR1## dissolved in a solvent mixture which is miscible with water in any proportion and which consists of N,N,N',N'-tetramethylurea, at least one alkylene glycol ether and water, and alkyl- or alkanolamine in an amount sufficient to bring the pH value of the liquid preparation to 6.5 to 8.5, the dye being in the form of alkyl- or alkanolamine. This novel liquid preparation is a concentrated true solution which is stable in storage over several months at temperatures of between about -10.degree. C. and +60.degree. C., and which is miscible with cold and warm water in any proportion. It is suitable in particular for dyeing and printing paper, including semi-cardboard and cardboard, the dyeing of these materials being possible, for example, in the pulp, or by brushing or immersion.

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Village-Neuf, France

Roger Lacroix