Bleaching and dyeing; fluid treatment and chemical modification – Acylating agent or cross-linker dye additive – composition,...
Patent
1997-07-11
1998-12-22
Einsmann, Margaret
Bleaching and dyeing; fluid treatment and chemical modification
Acylating agent or cross-linker dye additive, composition,...
8543, 8566, 8585, 8597, 8602, 8606, 8620, 8629, D06P 166, D06P 156, D06P 366
Patent
active
058512403
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a process for simultaneously dyeing and finishing cellulosic textile fibre material by a pad dyeing process.
It has long been known to finish cellulosic textile fibre materials after dyeing in a separate step with specific finishers, typically agents for improving creasing and shrinkage, additives for an anti-crease and anti-shrink finish, hydrophobic agents, or flame retardants. Furthermore, attempts have also been made to carry out the dyeing and finishing of the textile material simultaneously in one step, but no satisfactory results have been obtained so far.
Surprisingly, it has now been found that cellulosic textile fibre materials can be conveniently dyed in one step and given a wash-and-wear, or anti-crease, finish if choline is added to the dye liquor. The dyeings so obtained are distinguished in particular by their excellent tinctorial strength.
Accordingly, the invention relates to a process for dyeing and finishing cellulosic textile fibre material in one step, which process comprises applying to said textile fibre material a liquor comprising
The dyes in the dyeing liquor are reactive dyes, direct dyes or acid dyes conventionally used for dyeing cellulosic materials, typically those described in Colour Index, 3rd edition, 1971 as well as in the supplements under the sections "Reactive Dyes", "Acid Dyes" or "Direct Dyes". Illustrative examples of these dyes are sulfo group-containing monoazo, disazo, polyazo, metal complexazo, anthraquinone, phthalocyanine, formazane or dioxazine dyes.
It is preferred to use direct, acid or reactive dyes of the monoazo, disazo, polyazo, metal complexazo, anthraquinone, phthalocyanine, formazane or dioxazine series.
A particularly preferred group of dyes are the reactive dyes. These are dyes of different classes, typically of the monoazo or polyazo, metal complexazo, anthraquinone, phthalocyanine, formazane or dioxazine series, which contain at least one reactive group.
Reactive groups will be understood as meaning fibre-reactive radicals that are able to react with the hydroxy groups of cellulose, with the amino, carboxyl, hydroxyl and thiol groups of wool and silk, or with the amino and, where present, the carboxyl group of synthetic polyamides, to form covalent chemical bonds. The reactive groups are usually bonded direct or through a bridge member to the dye radical. Suitable reactive groups are typically those that contain at least one removable substituent at an aliphatic, aromatic or heterocyclic radical or wherein the cited radicals contain a radical suitable for reaction with the fibre material, typically a halotriazinyl radical, halopyrimidinyl radical or vinyl radical.
Preferred aliphatic reactive groups are those of formulae --SO.sub.2 Y, --SO.sub.2 --NH--Y, --NH--CO--alk--SO.sub.2 Y, --CO--NH--alk--SO.sub.2 Y, or --NH--CO--Y.sub.1, wherein Y is a leaving group, typically .beta.-sufatoethyl, .beta.-thiosulfatoethyl, .beta.-phosphatoethyl, .beta.-acetyloxyethyl, .beta.-haloethyl or vinyl, Y.sub.1 is typically a .alpha.,.beta.-dihaloethyl or .alpha.-haloethenyl radical, alk is C.sub.2 -C.sub.4 alkylene, and halogen is preferably chloro or bromo.
Preferred heterocyclic fibre-reactive radicals are 1,3,5-triazine radicals of formula ##STR1## wherein T.sub.1 is fluoro, chloro or carboxypyridinium, and substituents V.sub.1 at the triazine ring are in particular: fluoro or chloro; --NH.sub.2, unsubstituted or substituted alkylamino groups or N,N-dialkylamino groups, for example unsubstituted or hydroxy-, sulfo- or sulfato-substituted N-mono- or N,N-diC.sub.1 -C.sub.4 alkylamino; cycloalkylamino; aralkylamino, typically benzylamino; arylamino groups such as unsubstituted or sulfo-, methyl-, methoxy- or chloro-substituted phenylamino; mixed substituted amino groups such as N-alkyl-N-cyclohexylamino groups or N-alkyl-N-phenylamino groups; morpholino; as well as fibre-reactive radicals of formula ##STR2## R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl, R.sub.2 is hydrogen, C.sub.1 -C.sub.4 alkyl which is unsubstituted or substitut
REFERENCES:
patent: 4290767 (1981-09-01), Abel
patent: 4629470 (1986-12-01), Harper, Jr.
American Dyestuff Reporter, Jul. 1989, vol. 78, No. 7, pp. 42, 45-47 & 52.
Textilhilfsmittel Katalog 1991, Konradin Verlag R. Kohlhammer, Leinfelden Echterdingen, pp. 163-170, 174-176.
Fritzsche Katharina
Kanzig Alex
Scheibli Peter
Ciba Specialty Chemicals Corporation
Crichton David R.
Einsmann Margaret
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