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
  • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
  • D06P5/15—Locally discharging the dyes
  • D06P5/155—Locally discharging the dyes with reductants
• • 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

Definitions

• the present invention relates to a means for producing etching print patterns on textile materials made of hydrophobic synthetic fibers, which have been dyed with heat-set dyes, and to such a patterning method.
• Real dyeings on hydrophobic polyester textile fibers are known to be produced by dissolving colored organophilic substances in the synthetic fiber material.
• this dissolving process can be carried out by increasing the temperature up to the glass transition temperature of the fiber substance.
• Such a working method suffers the suppleness of the goods and their value as clothing textile material decreases.
• the said dissolving process for the heat-fixable dye is carried out in the presence of a so-called "carrier" at low temperatures.
• Carriers are organic substances that accelerate or promote the process of dissolving colored substances in the fiber mass under fiber swelling.
• this process of dissolving the colored substances in the hydrophobic fiber mass at temperatures between 160 ° and 180 ° C. is carried out in the presence of superheated steam, which is referred to as HT steam fixation.
• superheated steam which is referred to as HT steam fixation.
• the dyeing can also be carried out in the dye bath using the pull-out method.
• the present invention also relates to pressure etching agents for carrying out the claimed method, characterized in that it contains a mixture of components (a), (b), (c), (d), (e) and (f).
• the mixture component (a) in the etchant according to the invention is, for example, 2-, 3- or 4-hydrazino-benzenecarboxylic acid; 2-hydrazino-phenylacetic acid; Hydrazino-naphthalene carboxylic acids; 2-, 3- or 4-hydrazino-benzenesulfonic acid- (5) ; 4-, 5- or 8-hydrazino-naphthalenesulfonic acid (1); 1- or 6-hydrazino-naphthalenesulfonic acid- (2); 4-hydrazino-toluenesulfonic acid- (2); 2- or 3-hydrazino-benzene-disulfonic acid (1,4) and 4-hydrazino-benzene-disulfonic acid (1,3) as well as corresponding alkali metal or ammonium salts on the acid residue or salts of hydrohalic acids on the hydrazo group.
• the mixture component (a) is used in amounts between 5 and 60 g, preferably between 15 and 40
• Suitable polyalkylene glycols corresponding to component (b) for the etchant according to the invention are primarily polyethylene glycols with an average molecular weight of between 300 and 2000.
• the amount of the mixture component (b) required in the etching printing paste is between 30 and 300 g, preferably between 60 and 200 g, per kilogram of the etching printing paste.
• Mixture component (c) especially N, N-dimethyl-N-ethanolamine or ammonia, serves to neutralize compound (a) and the copolymer mixture (f); therefore the amount of (c) used depends mainly on the amount of the mixture components (a) and (f) present.
• the mixture component (d) especially lower aliphatic alcohols such as methanol or ethanol, or their etherification products with ethylene glycol such as ethylene glycol monoethyl, monobutyl or monomethyl ether, is used to dissolve the water-insoluble copolymer mixture (f). It is used in amounts of between 1 and 10 g, preferably between 3 and 5 g, per kilogram of the etching printing paste.
• Anionic emulsifier (s) for the etching printing paste according to the invention are, for example, ammonium lauryl sulfate or sodium ⁇ -hydroxyoctadecane sulfonate.
• this emulsifier component is also used in the preparation of the copolymer mixture (f), which means that an additional addition can usually be omitted.
• the copolymer mixture (f) consists of two copolymers which have opposite dissolution behavior in the aqueous dilutions of the mixture component (d) at the neutral point.
• the vinyl acetate copolymer is prepared according to DE-PS 803 956 or GB-PS 733 507. This copolymer can be easily dissolved in 50% aqueous ammoniacal methanol at pH values above 7.5. At pH values below 6, it becomes insoluble and separates from the solution as a viscous mass.
• 1 kilogram of etching printing paste contains 3 to 50 g, preferably between 5 and 20 g, of this copolymer of the polyvinyl acetate type.
• the other copolymer with a cross-linked structure is prepared according to FR-PS 1 280 792, Example 6, e.g. prepared from ethyl acrylate, methacrylic acid and glyoxal-tetra-allylacetal in the presence of an anionic emulsifier as an aqueous emulsion.
• This second copolymer shows no thickening effect in aqueous media at pH values below 6.0. Above pH 6.5, the copolymer becomes increasingly viscous in alkaline aqueous media with increasing pH. According to the present invention, ammonia is used as the alkali for this.
• 1 kg of the etching printing paste according to the invention contains 30 to 150 g, preferably 60 to 100 g of this copolymer of the polyacrylate type.
• components (b) to (f) are prepared as a finished mixture and component (a) as an individual component in an aqueous solution containing N, N-dimethyl-N-ethanolamine added to the etching paste.
• the pH of the aqueous solution of the neutralized mixture components (a) and (f) should advantageously be in the range between 6.5 and 8.8.
• Suitable textile fabrics in particular woven or knitted fabrics, from synthetic fibers with a hydrophobic character are all materials which can be dyed by heat-fixable dyes, in particular disperse dyes, especially from fibers of linear aromatic polyesters such as polyethylene terephthalate, furthermore from cellulose triacetate, cellulose 2 1/2 -acetate and polyamide fibers. Textile based on mixtures of these synthetic fibers with fibers of natural origin or other synthetic fibers can also be used.
• the selection of the etchable dyes for the claimed process can only be made experimentally due to the mild effect of the etchant.
• the range of disperse dyes that can be etched according to the present invention is sufficient and ranges from yellow to blue.
• the etching effects can be produced in such a way that the textile fabric or knitted fabric is first padded, dried and fixed with a dye liquor containing etchable disperse dyes and by a reductive alkaline treatment finishing, washing and drying.
• the fixation thus creates a solution of the dye in the hydrophobic fiber.
• One advantage of the method according to the invention is the possibility of unlimited storage of the basic colors.
• the basic colors can then be printed with time-sensitive etching patterns.
• the fixation of the etching pattern can, as usual, in hot air or hot steam at temperatures between 160 ° C and 220 ° C for 45 seconds to 8 minutes, or in pressurized steam at 1.2 to 1.4 atm for 10 to 30 minutes, preferably 15 to 20 minutes.
• the completion of the fixed prints requires, after rinsing with water, as usual, a reductive aftertreatment as well as a final rinsing and drying.
• Printed in punctiform patterns dried and then treated in a high-temperature steamer at 180 ° C. for 7 minutes in order to etch or fix the applied dyes (colored etchings).
• the goods are then rinsed with water, reductively aftertreated in an aqueous liquor with sodium hydroxide solution, sodium dithionite and a nonionic surfactant, rinsed again with water and finally dried.
• yellow and white dot-shaped patterns on a violet background are obtained on the goods from example la) and yellow and white dot-shaped patterns on a red background on the goods from example lb).

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Coloring (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6251923

Family Applications (1)

Country Status (4)

Family Cites Families (8)

• 1984
  • 1984-12-05 DE DE19843444283 patent/DE3444283A1/de not_active Withdrawn
• 1985
  • 1985-11-26 EP EP85114938A patent/EP0184101A3/fr not_active Withdrawn
  • 1985-12-03 ES ES549522A patent/ES8705063A1/es not_active Expired
  • 1985-12-04 JP JP60271706A patent/JPS61138788A/ja active Pending

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