Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
  • D06P3/58—Material containing hydroxyl groups
  • D06P3/60—Natural or regenerated cellulose
  • D06P3/62—Natural or regenerated cellulose using direct dyes
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
  • D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • D06P1/525—Polymers of unsaturated carboxylic acids or functional derivatives thereof
  • D06P1/5257—(Meth)acrylic acid
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
  • D06P3/58—Material containing hydroxyl groups
  • D06P3/60—Natural or regenerated cellulose
  • D06P3/66—Natural or regenerated cellulose using reactive dyes
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
  • D06P5/001—Special chemical aspects of printing textile materials

Definitions

• the present invention relates to a method for printing fiber material, such as cellulose-containing textile material, wool and silk with reactive dyes in direct printing, and the printing paste used for this printing.
• printing pastes used for this must meet high requirements with regard to their viscosity behavior, storage and electrolyte stability, etc.
• printing pastes which contain at least one thickener, e.g. B. contain sodium alginate.
• a printing paste that contains this component has insufficient storage stability and often also uneven homogeneity, which has a negative impact on the loss of pressure.
• Synthetic thickeners are an alternative to natural alginates. However, these in turn prove to be sensitive to electrolytes and are therefore only of limited suitability for printing with powder and granule dyes.
• the printing pastes formulated on the basis of these thickeners are often extremely viscous, i.e. their viscosity changes as a function of the shear forces, which causes problems in their handling. Another negative aspect is their sometimes poor washability and sensitivity to Ca and Mg ions.
• the present invention was therefore based on the object of providing a printing paste which is free from alginate compounds and at the same time insensitive to electrolytes, is homogeneous, has a long shelf life and is easy to wash out. Surprisingly, it has now been found that the use of certain water-soluble polymers in printing pastes fulfills these conditions.
• the printing paste can also other common additives such. B. contain urea and reducing agents. Furthermore, other additives, such as. B. thickeners or preservatives can be used for the production of the printing paste.
• the prints produced according to the method according to the invention are vivid in color, lightfast, washable and rub resistant.
• water-soluble sulfo-containing polymer (a) there are e.g. Homo-co- or graft polymers containing 20 mol% units of a sulfo-containing monomer.
• the polymeric compounds (a) are preferably homopolymers of monomers containing sulfo groups or copolymers which contain more than 50 mol%, in particular more than 75 mol%, of monomer units containing sulfo groups.
• Homo- and copolymers are particularly preferred which contain - 50 mol%, in particular 75 mol% of 2-acrylamido-2-methylpropanesulfonic acid units.
• the polymers (a) can each be present as free acid or as ammonium, alkali metal (Na, K, Li) or alkaline earth metal salt (e.g. Ca); mixtures of different cations are also possible.
• alkali metal Na, K, Li
• alkaline earth metal salt e.g. Ca
• the polymer (a) is a copolymer
• the following are used as sulfo-free comonomers, e.g. monomers containing carboxyl groups, monomers containing phosphoric acid groups or other comonomers.
• Suitable comonomers with a carboxyl function are (meth) acrylic acid, maleic acid, fumaric acid, itaconic acid, mesaconic acid, citraconic acid, vinyl acetic acid, Vi nyloxyacetic acid, vinyl propionic acid, crotonic acid, aconitic acid, allylacetic acid, allyloxyacetic acid, a, ⁇ -dimethylacrylic acid, allylmalonic acid, allyloxymalonic acid, methylenmalonic acid, 2-hydroxy (meth) acrylic acid, 2-halogeno (meth) acrylic acid, a-ethylacrylic acid, acrylamide, acrylamide Carboxyethyl acrylate, allyloxy-3-hydroxybutanoic acid and allylsuccinic acid.
• Suitable comonomers with a phosphoric acid group are e.g. Vinylphosphonic acid, (meth) allylphosphonic acid and acrylamidomethylpropanephosphonic acid.
• Homopolymers of alkali metal salts of 2-acrylamido-2-methylpropanesulfonic acid as component (a) have proven to be particularly suitable.
• the polymers or copolymers used and their preparation are known per se.
• the water-soluble polymers used according to the invention are preferably prepared in aqueous solution.
• Peroxidic compounds which are capable of forming free radicals are suitable as initiators, such as hydrogen peroxide, di-tertiary butyl oxide, benzoyl peroxide, lauryl peroxide or cumene hydroperoxide.
• the polymerization can also be initiated with aliphatic azo compounds.
• the usual redox catalyst systems such as hydrogen peroxide / iron (II) sulfate, are of course very suitable for initiating the polymerization.
• the polymerization is usually carried out in the acidic to neutral range.
• the temperature during the polymerization is generally 20 to 100 ° C., preferably 40 to 80 ° C.
• the polymer solutions obtained are e.g. 15 to 30% and have a molecular weight of e.g. 1000 to 3000000 and preferably 5000 to 500000.
• the printing pastes contain fixing alkalis to fix the reactive dyes.
• alkaline compounds are sodium carbonate, sodium hydroxide, disodium phosphate, trisodium phosphate, sodium acetate, sodium propionate, sodium hydrogen carbonate, borax, aqueous ammonia or alkali donors, such as sodium trichloroacetate or sodium formate.
• a mixture of water glass and a 25% aqueous sodium carbonate solution can also be used as the fixing alkali.
• the pH of the additives containing fixative alkali is generally 7.5 to 13.2, preferably 8.5 to 12.5.
• the amount of fixing alkali is chosen so that the pH of the ready-to-use printing paste is in the alkaline range, preferably between pH 7.5 and 12.
• deaerating agents can be used as component (c), provided that the rheological properties of the printing paste according to the invention are not adversely affected. Because of their good defoaming properties, low-silicone oil-free to silicone-oil-free deaerating agents are preferred, which generally contain 0 to about 5, in particular 0.1 to 1, percent by weight of a conventional silicone oil.
• Preferred venting agents contain e.g. as active substance high-boiling hydrocarbons, hydrogenated naphthalenes, mineral oils, fatty oils or insoluble metal soaps or mixtures thereof and optionally have the silicone oil content indicated above.
• they can also be present as aqueous solutions which, in addition to the active substances of the type mentioned, generally contain a nonionic surfactant, e.g. Contain ethylene adducts of an alkylphenol. Higher alcohols with boiling points above about 100 ° C., turpentine oils, mineral oils or mixtures thereof may be mentioned as preferred ingredients or active substances of the deaerating agents.
• Hydrocarbon mixtures which generally have a flash point above approximately 120 ° C., preferably from approximately 150 to 220 ° C. and a boiling range from approximately 250 to 500 ° C. under normal conditions are preferably used.
• deaerating agents which contain an octanol as active substance, e.g. Contain 2-ethyl-n-hexanol or its mixture with high-boiling hydrocarbon mixtures which have the above-mentioned content of silicone oils and are optionally present as an aqueous preparation, these preparations in addition to the active substances ethylene oxide adducts of an alkylphenol with 6 to 12 carbon atoms in the alkyl radical as a surfactant contain.
• an octanol as active substance
• these preparations in addition to the active substances ethylene oxide adducts of an alkylphenol with 6 to 12 carbon atoms in the alkyl radical as a surfactant contain.
• aromatic nitro compounds especially salts of aromatic mono- or dinitrocarboxylic acids or sulfonic acids, which are optionally present as alkylene oxides, especially alkali salts of a nitrobenzenesulfonic acid, such as e.g. 2-nitrobenzenesulfonic acid Na salt.
• Reducing agents in particular alkali salts of nitrobenzenesulfonic acids, and urea are advantageously added to the printing pastes.
• the printing pastes according to the invention are preferably free of alginate-containing compounds.
• the dyes used in the process according to the invention are the reactive dyes usually used for dyeing or printing cellulose textile materials.
• Reactive dyes are understood to be the usual dyes which form a chemical bond with the cellulose, e.g. the "Reactive Dyes” listed in Color Index in Volume 3 (* edition, 1971) on pages 3391-3560 and in Volume 6 (revised 3rd edition, 1975) on pages 6238-6345.
• dyes are dyes of different classes, for example those from the monoazo or polyazo, metal complex azo, anthraquinone, phthalocyanine, formazane, azomethine, nitroaryl, dioxazine, phenazine, stilbene, triphenylmethane -, Xanthene, thioxanthone, napthoquinone, pyrenchinone or perylene tetracarbimide series, which contain at least one reactive group.
• monoazo or polyazo metal complex azo, anthraquinone, phthalocyanine, formazane, azomethine, nitroaryl, dioxazine, phenazine, stilbene, triphenylmethane -, Xanthene, thioxanthone, napthoquinone, pyrenchinone or perylene tetracarbimide series, which contain at least one reactive group.
• Reactive groups are fiber-reactive radicals which are able to react with the hydroxyl groups of cellulose, the amino, carboxy, hydroxyl and thiol groups in wool and silk, or with the amino and possibly carboxy groups of synthetic polyamides to form covalent chemical bonds .
• the reactive groups are usually bound to the dye residue directly or via a bridge link.
• Suitable reactive groups are, for example, those which contain at least one removable substituent on an aliphatic, aromatic or heterocyclic radical or in which the radicals mentioned are a radical suitable for reaction with the fiber material, such as e.g. contain a vinyl residue.
• a reactive group is, for example, an alkanoyl or alkylsulfonyl radical substituted by a removable atom or a removable group, an alkenoyl or alkenesulfonyl radical optionally substituted by a removable atom or a removable group or an alkenoyl or alkenesulfonyl radical containing a vinyl group.
• the alkanoyl, alkylsulfonyl and alkenesulfonyl radicals mentioned generally contain 2 to 8 carbon atoms and the alkenoyl radicals generally contain 3 to 8 carbon atoms.
• heterocyclic radicals come e.g. those which contain at least one removable substituent bound to a heterocyclic radical; inter alia those which contain at least one reactive substituent bound to a 5- or 6-membered heterocyclic ring, such as to a monoazine, diazine, triazine, pyridine, pyrimidine, pyridazine, pyrazine, thiazine, oxazine - Or asymmetrical or symmetrical triazine ring, or to such a ring system which has one or more fused aromatic rings, such as a quinoline, phthalazine, chinnoline, quinazoline, quinoxaline, acridine, phenazine and phenanthridine ring system .
• the heterocyclic fiber-reactive radical such as a quinoline, phthalazine, chinnoline, quinazoline, quinoxaline, acridine, phenazine and
• Cleavable atoms or cleavable groups include, for example, halogen, such as fluorine, chlorine or bromine, ammonium including hydrazinium, sulfato, thiosulfato, phosphato, acetoxy, propionoxy, azido, carboxypyridinium or rhodanido.
• halogen such as fluorine, chlorine or bromine
• ammonium including hydrazinium, sulfato, thiosulfato, phosphato, acetoxy, propionoxy, azido, carboxypyridinium or rhodanido.
• a wide variety of residues can be considered as a bridge link between the dye residue and the fiber-reactive residue or as a bridge link between two fiber-reactive residues.
• the bridge member is, for example, an aliphatic, aromatic or heterocyclic radical; Furthermore, the bridge member can also be composed of various such residues.
• the bridge member generally contains at least one functional group, for example the carbonyl group or the amino group, the amino group being optionally substituted by halogen, hydroxy, cyano, C 1 -C 4 -alkoxy, C 1 -C 4 -alkoxycarbonyl, carboxy, Sulfamoyl, sulfo or sulfato substituted C 1 -C 4 alkyl may be further substituted.
• An aliphatic radical for example, is an alkylene radical with 1 to 7 carbon atoms or its branched isomers. The carbon chain of the alkylene radical can be interrupted by a hetero atom, such as an oxygen atom.
• the aromatic radical is, for example, a phenyl radical which is substituted by C 1 -C 4 -alkyl, such as methyl or ethyl, C 1 -C 4 -alkoxy, such as methoxy or ethoxy, halogen, such as fluorine, bromine or in particular chlorine, carboxy or Sulfo can be substituted, and a heterocyclic radical, for example a piperazine radical.
• a phenyl radical which is substituted by C 1 -C 4 -alkyl, such as methyl or ethyl, C 1 -C 4 -alkoxy, such as methoxy or ethoxy, halogen, such as fluorine, bromine or in particular chlorine, carboxy or Sulfo can be substituted, and a heterocyclic radical, for example a piperazine radical.
• a heterocyclic radical for example a piperazine radical.
• R 1 is hydrogen or C 1 -C 4 alkyl, which is substituted by halogen, hydroxy, cyano, C 1 -C 4 alkoxy, C 1 -C 4 alkoxycarbonyl, carboxy, sulfamoyl, sulfo or sulfato can be.
• V 1 is preferably fluorine, chlorine, -NH 2 , a C 1 -C 6 -alkylamino-, N, N-di-C 1 -C 6 -alkylamino-, cyclohexylamino-, N, N -Dicyclohexylamino-, Benzylamino-, Phenäthylamino-, Phenylamino-, Naphthylamino-, NC 1 -C 6 -Alkyl-N-cyclohexylamino- or NC 1 -C 6 -Alkyl-N-phenylamino residue, or Morpholino, Piperidino, Piperazino, Hydrazino or Semicarbazido, or an amino group substituted by a furan, thiophene, pyrazole, pyridine, pyrimidine, quinoline, benzimidazole, benzothiazole or benzo
• V 1 is particularly preferred in the remainder of the formula (1) fluorine, chlorine, phenylamino or NC 1 -C 4 -alkyl-N-phenylamino, the phenyl rings being optionally substituted by halogen, such as fluorine, chlorine or bromine, nitro, cyano, trifluoromethyl, Sulfamoyl, carbamoyl, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, acylamino groups such as acetylamino or benzoylamino, ureido, hydroxy, carboxy, sulfomethyl or in particular sulfo are substituted.
• halogen such as fluorine, chlorine or bromine, nitro, cyano, trifluoromethyl
• Sulfamoyl carbamoyl, C 1 -C 4 alkyl, C 1 -C 4 alkoxy
• acylamino groups such as acetylamino or benzo
• the triazinyl radicals can also be linked to further fiber-reactive radicals, the further fiber-reactive radicals generally being bonded to the halogenotriazinyl radical via a bridge member.
• Other fiber-reactive residues and bridge members include for example, the aforementioned.
• T 2 and T 3 are independently fluorine, chlorine or carboxypyridinium and B is a bridge member.
• a bridge of the formula B is, for example, a residue into consideration, wherein R 1 and R 1 'are independently hydrogen or optionally substituted by halogen, hydroxy, cyano, C 1 -C 4 alkoxy, C 1 -C 4 alkoxycarbonyl, carboxyl, sulfamoyl, sulfo or sulfato-substituted C 1 -C
• X is a C 2 -C 6 alkylene or C 5 -C 9 cycloalkylene radical which is optionally substituted by hydroxy, sulfo, sulfato, C 1 -C 4 alkoxy, carboxy or halogen or a radical which is optionally substituted by C 1 - C 4 alkyl, C 1 -C 4 alkoxy, sulfo,
• halogen such as fluorine, chlorine or bromine, nitro, cyano, trifluoromethyl, sulfamoyl, carbamoyl, C 1 -C 4 alkyl, C 1 -C 4 -alkoxy, acylamino groups, such as acetylamino or benzoylamino, ureido, hydroxy, carboxy, sulfomethyl and sulfo.
• the radical B 1 contains 1 to 6, preferably 1 to 4, carbon atoms; Examples of B 1 are: methylene, ethylene, propylene, butylene, methyleneoxy, ethyleneoxy, propyleneoxy and butyleneoxy. If B 1 has a residue -O ( ⁇ CH 2 B 1 is bonded to the benzene ring through the oxygen atom. B 1 is preferably the direct bond.
• ⁇ -haloethyl Z is in particular the ⁇ -chloroethyl radical and ⁇ -acyloxyethyl in particular the ⁇ -acetoxyethyl radical.
• the alkylene radical alk is preferably methylene, ethylene, methylmethylene, propylene or butylene.
• the substituent T is in particular acetyloxy, propionyloxy or butyryloxy as the alkanoyloxy radical, and in particular methoxycarbonyl, ethoxycarbonyl or propyloxycarbonyl as the alkoxycarbonyl radical.
• V is an alkyl radical
• this can be methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl or tert-butyl.
• the radical R ' is, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl or hexyl, or preferably hydrogen.
• the polymethylene residues alk ' are preferably ethylene, propylene or butylene.
• the indices p, q and t are preferably 2, 3 or 4 independently of one another.
• the indices r and s are preferably 2 independently of one another.
• V 2 are those of the formula (4), in which B 1 is the direct bond and R is a radical of the formula (4a), or in which V 2 is a radical of the formula (4b), (4c) or which is bonded directly to the triazine ring (4f), or wherein V 2 is a radical of formula (4 ').
• Z 1 has the meanings of Z and can additionally be a, ⁇ -dihaloethyl or a-haloacryloyl, is preferred.
• halogen in the ⁇ -haloethyl, a, ⁇ -dihaloethyl and a-haloacryloyl groups in particular chlorine and bromine are suitable.
• Particularly preferred aliphatic reactive groups are those of the formula (5a) and also those of the formulas (5c) and (5d).
• Z is in particular ⁇ -sulfatoethyl, ⁇ -haloethyl or vinyl.
• the reactive dyes very particularly preferably contain at least one reactive group of the formulas (1), (2), (3) and (5a) to (5e), where for T 1 , T 2 , T 3 , T 4 , V 1 , V 2 , B, Z and Z 1 the meanings given above and favors apply.
• the reactive dyes are derived in particular from the remainder of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazane, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthone, nitroaryl , Naphthoquinone, pyrenchinone or perylene tetracarbimide dye, preferably the remainder of a monoazo, disazo, metal complex azo, formazan, anthraquinone, phthalocyanine or dioxazine dye.
• the reactive dyes can contain, as further substituents, the substituents customary in organic dyes.
• the reactive dyes are preferably derived from the following dye residues:
• Heavy metal complexes of reactive dyes are also particularly important; copper, nickel, cobalt or chromium are particularly suitable as complex-forming heavy metals. Copper complex azo dyes are preferred, in particular those of the formulas (12) to (23) which contain the copper atom bonded via an oxygen atom each in the ortho position to the azo bridge.
• azo dyes that are suitable as metal complexes:
• Cr and Co complexes may contain the azo compound of the formula given above once or twice, i.e. they can be symmetrical or asymmetrical with any other ligand.
• the aromatic rings in the above dyes can be further substituted, the benzene rings especially by methyl, ethyl, methoxy, ethoxy, methylsulfonyl, ethylsulfonyl, carboxy, acetylamino or chlorine, and the naphthalene rings in particular by methoxy, carboxy, acetylamino, nitro or chlorine.
• the benzene rings are preferably not further substituted.
• a 1 and A 2 independently, for example, each represent a radical of the formulas (6a) - (31c) given above, T 1 and T 1 'independently of one another each have the meaning given previously for T 1 and preferably each represent chlorine , R 1 , R i ', R 1 "and R 1 '" independently of one another each have the meaning previously given for R 1 and preferably each represent hydrogen and A is a bivalent aromatic or aliphatic radical, for example optionally substituted by 1 to 2 sulfo groups 1,3- or 1,4-phenylene or C 2 -C 6 alkylene.
• reactive dyes which contain at least one monohalotriazine group, preferably a monochlorotriazine group.
• Dyes with two or more identical or different reactive groups can also be used.
• the dyes used according to the invention can be either liquid or formulated as powder or granules.
• the amount of the dyes used is generally dependent on the desired color strength and is advantageously from 0.01 to 400 g, advantageously from 0.5 to 300 and preferably from 1 to 200 g per kg of printing paste.
• the printing paste according to the invention is produced in a simple manner by mixing components (a) and (b) and, if appropriate, (c), and urea and reducing agent with the desired dye formulation, the amount of water required being added at the end, so that a sets a suitable viscosity for direct printing, which is between 1,500 and 7,000 mPa ⁇ s.
• the printing paste is applied over the entire surface, preferably in a pattern, to the substrate, printing presses of conventional design, e.g. Rotary film printing or flat film printing machines are used expediently.
• the method according to the invention is particularly suitable for printing textiles which consist of or contain cellulose.
• wool or silk can also be printed.
• Suitable cellulose material is that of regenerated or, in particular, natural cellulose, such as Cellulose, viscose silk, cellulose acetate, hemp, linen, jute or preferably cotton, as well as fiber mixtures, e.g. those made of polyamide / cotton or in particular polyester / cotton, it being possible for the polyester portion to be printed simultaneously with disperse dyes.
• these are mainly sheet-like textile materials, such as Fleeces, felts, carpets, knitted fabrics and in particular fabrics.
• the process according to the invention is suitable for fiber materials which may have been pretreated with sodium hydroxide solution, for cellulose material and regenerated cellulose, such as Viscose cellulose.
• the printed textile material is preferably dried and then one Subject to heat treatment process to complete the print or fix the dye.
• the heat treatment can be carried out by a warm dwell process, a thermal insulation process or preferably by a steaming process.
• the printed textile materials are subjected to a treatment in a steamer with possibly superheated steam, expediently at a temperature of 98 to 210 ° C., advantageously 100 to 180 ° C. and preferably 100 to 120 ° C.
• the completion of the prints by the so-called thermal insulation process can take place after or without intermediate drying, e.g. at a temperature of 100 to 210 ° C.
• the thermal insulation is preferably carried out at a temperature of 120 to 210 ° C, preferably 140 to 180 ° C and after an intermediate drying at 80 to 140 ° C of the printed goods.
• the thermal insulation can take 20 seconds to 5 minutes, preferably 30 seconds to 4 minutes.
• the cellulose-containing textile material is washed out in the usual way to remove unfixed dye.
• the substrate is treated, for example, at from 40 ° C. to the cooking temperature in a solution which contains soap or synthetic detergent.
• the present process gives strong, pattern-like prints on a white background with good levelness, good fastness properties and with sharp contours.
• the printing paste according to the invention advantageously contains urea and reducing agents as further additives.
• the printing paste according to the invention is characterized by good homogeneity, excellent storage stability and simple handling.
• the printing paste has a pH of 11.3.
• the viscosity is 2,400 mPa.s, measured on the Brookfield RVT viscometer, spindle 6, 20 rpm at 25 ° C.
• the printed fabric is dried at 90 ° C. and fixed for 8 minutes to fix the dye. treated with saturated steam at 100 ° C.
• the fabric is then rinsed with cold and boiling water until the unfixed portions of the dye and auxiliary agents have been removed. After the fabric has been dried at 90 to 100 ° C, a color-rich red level print with sharp contours is included.
• the treated fabric also has a soft feel.

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Citations (4)

• 1993
  • 1993-07-20 EP EP93810518A patent/EP0581736A1/fr not_active Withdrawn
  • 1993-07-28 KR KR1019930014409A patent/KR940005852A/ko not_active Application Discontinuation
  • 1993-07-29 JP JP5187871A patent/JPH06158558A/ja active Pending

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