EP3412826A1 - Behandlung von gefärbtem material - Google Patents

Behandlung von gefärbtem material Download PDF

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Publication number
EP3412826A1
EP3412826A1 EP17175164.7A EP17175164A EP3412826A1 EP 3412826 A1 EP3412826 A1 EP 3412826A1 EP 17175164 A EP17175164 A EP 17175164A EP 3412826 A1 EP3412826 A1 EP 3412826A1
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EP
European Patent Office
Prior art keywords
nmmo
textile material
laser
treatment
koh
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17175164.7A
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English (en)
French (fr)
Inventor
Christian Bruno SCHIMPER
Paul Sebastian PACHSCHWÖLL
Hubert HETTEGGER
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Acticell GmbH
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Acticell GmbH
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Filing date
Publication date
Application filed by Acticell GmbH filed Critical Acticell GmbH
Priority to EP17175164.7A priority Critical patent/EP3412826A1/de
Publication of EP3412826A1 publication Critical patent/EP3412826A1/de
Withdrawn legal-status Critical Current

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    • 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
    • D06P1/62—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 low-molecular-weight organic compounds with sulfate, sulfonate, sulfenic or sulfinic groups
    • D06P1/621—Compounds without nitrogen
    • 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
    • D06P1/64—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 low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/6422—Compounds containing nitro or nitroso groups
    • 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
    • D06P1/64—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 low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/645—Aliphatic, araliphatic or cycloaliphatic compounds containing amino groups
    • 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
    • D06P1/64—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 low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/649—Compounds containing carbonamide, thiocarbonamide or guanyl groups
    • D06P1/6491—(Thio)urea or (cyclic) derivatives
    • 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
    • D06P1/673—Inorganic compounds
    • D06P1/67333—Salts or hydroxides
    • D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
    • 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
    • D06P5/13—Fugitive dyeing or stripping dyes
    • D06P5/131—Fugitive dyeing or stripping dyes with acids or bases
    • 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
    • D06P5/13—Fugitive dyeing or stripping dyes
    • D06P5/132—Fugitive dyeing or stripping dyes with oxidants
    • 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
    • D06P5/13—Fugitive dyeing or stripping dyes
    • D06P5/137—Fugitive dyeing or stripping dyes with other compounds
    • 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
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2005—Treatments with alpha, beta, gamma or other rays, e.g. stimulated rays
    • 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
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2011—Application of vibrations, pulses or waves for non-thermic purposes
    • 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
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2066—Thermic treatments of textile materials
    • D06P5/2083—Thermic treatments of textile materials heating with IR or microwaves

Definitions

  • the present invention relates to surface treatment of cellulosic textile material with a chemical composition, more specifically to a discoloration treatment of an indigo-dyed textile material by application of chemicals and subsequent radiation or heating in order to obtain a color change and/or a vintage look of the textile material and the textile material obtained by such process.
  • Typical dry mechanical treatment methods are inter alia grinding against an abrasive stone or surface, damaging and breaking by controlled warp removal using pen grinders, patch and repair effects by tearing and re-sewing of the treated area, handsanding using sandpaper or sandblasters.
  • Another method is to apply CO 2 laser irradiation to indigo-dyed denim garments in order to obtain an artificial used look and effects such as whiskers or moustaches.
  • Full garment or textile bleaching can also be achieved by ozone treatment, in which special ozone washing machines are used. Although this method is supposed to be - besides hydrogen peroxide - much more ecological compared to potassium permanganate, this finishing technique is mainly used during final clean-up of ready garments.
  • a method for changing the color of an indigo-dyed cellulosic fiber, yarn, fabric, or garment in order to obtain a vintage or used look wherein said textile material is subjected to a treatment with a basic solution and comprising an activating drying step by dwelling, heating, microwave or laser irradiation.
  • composition for bleaching of the indigo-dyed textile material made of natural cellulose fibers or mixtures thereof with artificial chemical fibers includes aqueous solutions of N- methylmorpholine N -oxide (NMMO), dimethyl sulfoxide (DMSO), sodium hydroxide (NaOH), potassium hydroxide (KOH) and/or urea.
  • NMMO N- methylmorpholine N -oxide
  • DMSO dimethyl sulfoxide
  • NaOH sodium hydroxide
  • KOH potassium hydroxide
  • the cellulosic textile material is indigo-dyed.
  • the basic solution is an aqueous alkaline solution.
  • the basic solution comprises NMMO, DMSO, NaOH, KOH, urea, or mixtures thereof.
  • the basic solution may comprise NMMO, NMMO and DMSO, NMMO and NaOH, NMMO and KOH, urea and NaOH, or urea and KOH.
  • the basic solution may comprise NMMO, or NMMO and DMSO, or NMMO and NaOH, or NMMO and KOH, or NMMO, DMSO and NaOH, or NMMO, DMSO and KOH.
  • the basic solution may comprise urea and a strong base, for example urea and NaOH, or urea and KOH.
  • a further embodiment of the invention relates to the method as described herein, wherein the pH of the basic solution is above 7.
  • the pH of the basic solution may be in the range of 8 to 14.
  • the pH is 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, or 14.0
  • a further embodiment of the invention relates to the method as described herein, wherein radiation is applied. Radiation may be applied by a laser, a microwave oven or infrared light. In some embodiments of the invention the laser is a carbon dioxide laser.
  • a further embodiment of the invention relates to the method as described herein, wherein the cellulosic textile material is heat treated.
  • the heat treatment may be conducted in an oven or microwave oven, a tumble dryer, or Stenter machine.
  • the textile material is heated to dryness.
  • a further embodiment of the invention relates to the method as described herein, wherein optionally auxiliary agents are used.
  • auxiliary agent is selected from the group consisting of a softener, brightening agent, plastic, silicate, amorphous or crystalline silicon dioxide, a thickening agent, dyestuff used as a marker dye, a wetting agent, a complexing agent, a dispersing agent, and a buffer solution derived from the salt of an acid and the corresponding acid, or mixtures thereof.
  • a further embodiment of the invention relates to the method as described herein, wherein the ⁇ L value between the untreated and treated part is greater than 2 (L stands for the lightness in the CIE 1976 Lab color space).
  • One embodiment of the invention relates to an article obtained by a method as described herein.
  • the present invention relates to a method of enabling a worn and/or vintage look of fabrics or garments, wherein said fabric or garment is treated with an aqueous solution comprising DMSO, NMMO, NaOH or KOH and/or urea and subsequent dwelling time or application of heat until dryness.
  • Heat can either be applied by heating in an oven, microwave irradiation, direct infrared irradiation, or laser irradiation.
  • One object of the invention is to provide a method for reducing the color intensity of e.g. indigo-dyed denim and/or making patterns and images on a number of different cellulosic textile materials, by applying an aqueous solution comprising DMSO, NMMO, NaOH, KOH and/or urea as active compounds and subsequent laser irradiation.
  • DMSO dimethyl methacrylate
  • NMMO n-oxide
  • NaOH sodiumOH
  • KOH KOH
  • urea urea
  • Different N -oxides such as pyridine- N -oxide could also be used, however, due to safety reasons and working conditions it is not recommended to be executed.
  • one object of the invention is to provide such a method that allows causing fading effects in a continuous process.
  • textile material or “fabric” are used interchangeably and each refer to fibers, yarns, fabrics, flexible knitted, woven or nonwoven material consisting of a network of natural or artificial fibers (yarn or thread).
  • the textile material may also be used in production of further goods (cloths, garments, carpets, bags, shoes, jewelry, furnishings, artifacts, etc.).
  • the respective textile material is represented as colored and finished denim good.
  • the respective textile material is represented as a variety of garments including jeans skirts, jeans jackets, jeans shorts, jeans vests, jeans dresses, and/or corduroy and twill garments.
  • the textile material may be dyed or coated with a dye, in which the dye may be selected from natural or synthetic dyes, preferably indigo dye, sulfur dyes and other dyestuff classes (e.g. dischargeable dyes etc.), or combinations thereof as top, bottom or mixtures.
  • the dye may be selected from natural or synthetic dyes, preferably indigo dye, sulfur dyes and other dyestuff classes (e.g. dischargeable dyes etc.), or combinations thereof as top, bottom or mixtures.
  • the said textile material may be of cellulosic origin and selected from natural fibers, such as bast fibers like jute, flax, hemp, leaf fibers such as sisal, seed fibers such as cotton, or bamboo fibers, or man-made fibers such as lyocell fibers, viscose, rayon type fibers, modal, cupro and/or acetate type cellulosic fibers and optionally mixtures with synthetic fibers, if applicable and chemically compatible.
  • natural fibers such as bast fibers like jute, flax, hemp, leaf fibers such as sisal, seed fibers such as cotton, or bamboo fibers
  • man-made fibers such as lyocell fibers, viscose, rayon type fibers, modal, cupro and/or acetate type cellulosic fibers and optionally mixtures with synthetic fibers, if applicable and chemically compatible.
  • the active compounds may be selected from DMSO, NMMO, NaOH, KOH and/or urea as active compounds.
  • NMMO is used in this application as a solvent in liquid state and not as an active bleaching agent/oxidant (NMMO is a N -oxide with oxidative power) during application of heat and drying as discussed in the present invention.
  • the solution is an aqueous solution of NMMO, preferably in the range of 1-98 % NMMO, more preferably 5-95 %, most preferably 25-80 %.
  • DMSO is added to the said aqueous NMMO solution or used as a substitute of water, preferably in the range of 1-60 %, more preferably 10-55 %, most preferably 30-50 %.
  • sodium hydroxide (NaOH) or potassium hydroxide (KOH) is added to the said solution, preferably in the range of 0.1-50 %, more preferably 1-45 %, most preferably 1-40 %.
  • an aqueous mixture of a strong base in combination with urea is used, in which preferably 1-50 % urea are used, more preferably 10-40 %, most preferably 20-35 %.
  • the said strong base may be selected from the group of alkali, alkali earth, transition metal or metal hydroxides, oxides or carbonates respectively, or more generally speaking substances chemically classified as Arrhenius bases, including ammonia and organic bases. Mixtures of two or more of these compounds may also be used, as well as combinations to form buffer solutions.
  • the base is either NaOH or KOH due to economic and ecological reasons.
  • textile auxiliary chemicals may be added to the said solution in any combination and concentration in solid or liquid form to improve the usability and performance of the said solution according to what is required: e.g. dispersants, wetting agents, surfactants, thickening agents, colorants, tinting agents, silicones, leveling agents, antifoams, antimigration agents, antibackstaning agents, softeners, stabilizers and optical brightening agents.
  • dispersants wetting agents, surfactants, thickening agents, colorants, tinting agents, silicones, leveling agents, antifoams, antimigration agents, antibackstaning agents, softeners, stabilizers and optical brightening agents.
  • Other chemicals may be added to impart more desirable improvement of the substrate in hand feel or other property like softness, waterproofing, anti-microbial or microbe reducing chemicals, encapsulated perfumes, etc., or co-solvents (alcohols, ketones, nonionic solvents, ionic solvents, ionic liquids, etc.).
  • Respective thickening agents may be selected from but not limited to compounds which are commonly used in textile auxiliaries, food additives, cosmetics and personal hygiene products, i.e. starched and modified starches, cellulose and modified cellulose (i.e. methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, hydroxypropylmethyl cellulose, hydroxypropyl cellulose, ethylhydroxyethyl cellulose), alginates (i.e. sodium-, potassium-, ammonium-, propylenglycol alginate), gummi arabicum, carrageen, agar-agar, locust bean gum, guar gum, tragacanth, gellan, pectin, gelatin.
  • cellulose and modified cellulose i.e. methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, hydroxypropylmethyl cellulose, hydroxypropyl cellulose, ethy
  • the said solution is preferably an aqueous solution, but it may be also applied separately and stepwise or as a mixture of the pure substances in powdered form.
  • One or more components may be encapsulated in solution or solid form.
  • the textile material may also be evenly or unevenly impregnated with said composition using any of the conventional techniques.
  • the aqueous solution is applied on the raw or desized denim garment on only limited areas and heat is applied to the whole garment, or covering all parts of the garment and local laser treatment is applied for activation to create localized bleached effects simulating wear areas on the jeans or applied on prepared shaped motif to jeans or fabric which can be subsequently washed to highlight the applied areas.
  • the solution may be applied on fabric form by immersion or as a one side application by printing (e.g. as block printing or roller cage printing), spraying, foaming, or a kiss roll on all areas of the application side or on limited areas of the application side.
  • printing e.g. as block printing or roller cage printing
  • spraying foaming
  • a kiss roll on all areas of the application side or on limited areas of the application side.
  • a dwelling or heating step is necessary for activation of the bleaching and decolorizing action, in which also pre-drying before the actual heating/activation is possible for fast processing.
  • This heating step can either be by heating in an oven, microwave irradiation, direct infrared irradiation, or laser irradiation.
  • the textile materials can also be pre-dried after application of said solution. This is preferably carried out at ⁇ 40 °C for 1-60 min in an oven, a tumble dryer or by a drying passage in a Stenter dryer, in which sole ventilation is also possible.
  • the said heating step is additionally possible in an industrial tumble dryer or Stenter machine, in which both pre-drying as well as activation can be carried out sequentially.
  • the textile material is treated by said solution and then pre-dried at ⁇ 40 °C and subsequently heated at 100°C for 10 min in a tumble dryer.
  • a fabric is treated by said solution and subsequently heated at 100°C for 10 min during a Stenter passage.
  • the textile material is treated by said solution and subsequently heated at 100 °C for 10 min in a tumble dryer.
  • the material is subject to very intensive heating within a very small region.
  • Laser energy is absorbed as heat and the material rapidly heats and very importantly laser energy is transferred to chemical energy, in which eventually a chemical reaction is taking place leading to color intensity reduction of dyed textile materials.
  • the pretreated textile material is placed in a laser device and then scanning with a laser beam having a selected wavelength, power density, pulse width, and repetition rate over the textile material is carried out until the desired degree of fading and/or worn appearance or the selected pattern is achieved.
  • the color value changes and can be measured in a ⁇ L value of 2 between the untreated and treated part.
  • L stands for the lightness in the CIE 1976 Lab color space.
  • a color value means the lightness or darkness of the color of the desired effect which can also be referred to as color intensity or the degree of whiteness or degree of brightness.
  • a denim fabric or garment was subjected to a singeing treatment, a skewing treatment and a preshrinking treatment. Then, an aqueous solution comprising NMMO, or NMMO plus a strong base, for example, NMMO+NaOH or NMMO+KOH, NMMO+DMSO, NMMO+DMSO+NaOH, NMMO+DMSO+KOH or freshly prepared urea+NaOH or urea+KOH was applied by immersion.
  • a denim fabric was subjected to a singeing treatment, a skewing treatment, a preshrinking treatment and a desizing treatment. Then, an aqueous solution comprising NMMO, or NMMO plus a strong base, for example, NMMO+NaOH or NMMO+KOH, NMMO+DMSO, NMMO+DMSO+NaOH, NMMO+DMSO+KOH or freshly prepared urea+NaOH or urea+KOH was applied to the surface by printing.
  • a denim fabric or garment was subjected to a singeing treatment, a skewing treatment, a preshrinking treatment and a desizing treatment. Then, an aqueous solution comprising NMMO, or NMMO plus a strong base, for example, NMMO+NaOH or NMMO+KOH, NMMO+DMSO, NMMO+DMSO+NaOH, NMMO+DMSO+KOH or freshly prepared urea+NaOH or urea+KOH was applied to the surface by brushing.
  • a denim fabric or garment was subjected to a singeing treatment, a skewing treatment, a preshrinking treatment and a desizing treatment. Then, an aqueous solution comprising NMMO, or NMMO plus a strong base, for example, NMMO+NaOH or NMMO+KOH, NMMO+DMSO, NMMO+DMSO+NaOH, NMMO+DMSO+KOH was applied to the surface by spraying.
  • NMMO+NaOH or NMMO+KOH for example, NMMO+DMSO, NMMO+DMSO+NaOH, NMMO+DMSO+KOH
  • a pre-drying step (e.g. ⁇ 40 °C) is applied to the textile and garment samples after application of the respective solutions.
  • the color changing effect in such pretreated denim fabrics or garments is then generated by applying any radiation (e.g. laser) or heat treatment (e.g. oven or microwave oven).
  • any radiation e.g. laser
  • heat treatment e.g. oven or microwave oven.
  • a denim fabric was subjected to a singeing treatment, a skewing treatment and a preshrinking treatment. Then, an aqueous solution comprising NMMO, or NMMO plus a strong base, for example, NMMO+NaOH or NMMO+KOH, NMMO+DMSO, NMMO+DMSO+NaOH, NMMO+DMSO+KOH or freshly prepared urea+NaOH or urea+KOH was applied by immersion, followed by drying and laser treatment in a continuous process.
  • a raw denim garment was desized and dried. Subsequently a solution containing NMMO, or NMMO plus a strong base, for example, NMMO+NaOH or NMMO+KOH, NMMO+DMSO, NMMO+DMSO+NaOH, NMMO+DMSO+KOH or freshly prepared urea+NaOH or urea+KOH was sprayed or applied by brush or sponge on limited areas or on the whole denim garment.
  • NMMO+NaOH or NMMO+KOH NMMO+DMSO
  • NMMO+DMSO+NaOH NMMO+DMSO+KOH
  • freshly prepared urea+NaOH or urea+KOH was sprayed or applied by brush or sponge on limited areas or on the whole denim garment.
  • a raw denim garment is used as it is, or desized, and/or stonewashed or enzyme washed and dried. Subsequently a solution containing NMMO, or NMMO plus a strong base, for example, NMMO+NaOH or NMMO+KOH, NMMO+DMSO, NMMO+DMSO+NaOH, NMMO+DMSO+KOH or freshly prepared urea+NaOH or urea+KOH is sprayed or applied by brush or sponge on specific areas or on the whole garment.
  • a pre-drying step (e.g. ⁇ 40 °C) is applied to the textile and garment samples after application of the respective solutions.
  • the color changing effect in such pretreated denim fabrics or garments is then generated by applying any radiation (e.g. laser) or heat treatment (e.g. oven or microwave oven).
  • any radiation e.g. laser
  • heat treatment e.g. oven or microwave oven.
  • Table 1 depicts compositions of the (aqueous) solutions which are applied to denim fabrics.
  • FIG. 1 decolorized indigo-dyed denim textile samples are shown, which have been treated according to herein described methods.
  • the sample solutions as described in Table 1 were applied each onto the fabrics by brush (solutions 1, 2, 3 and 5); the fabrics were pre-dried at 40 °C for 60 min in an industrial tumble dryer and then subjected to laser-treatment with a CO 2 laser.
  • a textile without brushed solution but just laser-treatment is showed for comparative purposes as well, clearly demonstrating the enhanced bleaching effect of treated samples compared to solely lasered textile.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Coloring (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
EP17175164.7A 2017-06-09 2017-06-09 Behandlung von gefärbtem material Withdrawn EP3412826A1 (de)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3736374A1 (de) * 2019-05-08 2020-11-11 Sanko Tekstil Isletmeleri San. Ve Tic. A.S. Verfahren zur änderung der farbe einer textilie, eines gewebes und eines kleidungsstücks
CN114045664A (zh) * 2021-11-26 2022-02-15 广东溢达纺织有限公司 面料及其制造方法

Citations (3)

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CN114045664B (zh) * 2021-11-26 2023-10-13 广东溢达纺织有限公司 面料及其制造方法

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