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
  • 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
  • D06P1/22—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 vat dyestuffs including indigo
  • D06P1/222—Oxidising agents
• • 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
  • D06P1/30—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 sulfur dyes
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
  • Y10S8/904—Mixed anionic and nonionic emulsifiers for dyeing
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
  • Y10S8/908—Anionic emulsifiers for dyeing
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
  • Y10S8/916—Natural fiber dyeing
  • Y10S8/918—Cellulose textile

Definitions

• the present invention relates to a method for single-bath reoxidation and soaping of dyeings with vat and / or sulfur vat dyes (C.I. Vat Dyes), which have previously been applied in reduced form to a textile material containing cellulose fibers and fixed there, from an alkaline medium.
• This invention also relates to an oxidizing and re-soaping agent for carrying out the claimed process.
• N-chlorinated organic sulfonamides such as N-chloro-aryl- or -alkylaryl-sulfonamides or N-chlorinated isocyanuric acids are suitable representatives of such compounds which split off hypochlorite in the heat and are able to give off positively charged chlorine during the oxidation process in question.
• Anionic, hypochlorite-insensitive surfactants such as e.g. Oleyl methyl taurine or oleyl isethionic sodium, among others, optionally mixed with such non-ionic type auxiliaries. According to the invention, these surfactants are used together with the above-mentioned oxidizing agents from the same liquor.
• the amounts of the oxidizing agents mentioned above depend, according to the invention, on whether the process is carried out continuously or batchwise: with continuous process control, it is recommended that 1 to 4 g / 1 of the oxidants and 1 g / 1 soda be used in the batch liquors and 0.5 in the subsequent liquors to use 1% of the oxidant. In discontinuous work 0.5 to 2% of the oxidant (based on the weight of the goods) and 1 g / 1 soda have proven to be useful.
• the pH of the claimed process can vary within wide limits without affecting the quality of the reoxidation of the leuco dyes, as long as it is ensured that an alkaline medium (p H ) 8) predominates in the developing baths.
• the dye development is preferably carried out at pH values in the range between 8 and 12, which are adjusted either by the alkali on the goods, originating from the previous vatting, or better by the separate addition of, for example, soda.
• the claimed process can be carried out either continuously or batchwise. In the case of continuous working technology, residence times of the material to be dyed in the development / soap baths between 5 and 120 seconds are sufficient.
• the temperature of the treatment for reoxidizing and soaping is also relatively uncritical according to the process and, depending on the composition of the dye combination, can vary between 35 ° C and cooking temperature (100 ° C). While in the case of a combination of the sulfur vat dyes with each other temperatures between 35 ° and 50 ° C are used, in the case of combinations of vat and sulfur vat dyes 95 ° C to cooking temperature are preferred.
• the actual oxidation bath is generally followed by further soap baths set at higher temperatures (80 ° C. to cooking temperature). It is not necessary to interpose rinsing baths to remove the unused oxidizing agent.
• the new process is designed for the continuous as well as for the discontinuous oxidation / soaping of dyeings with the dyes mentioned, regardless of the form, for example by padding or printing or using the pull-out technique, these were previously applied to the textile material to be dyed are. They are independent of the type of application after fixation in reduced form on the fiber before and must be reoxidized to the insoluble dye.
• sulfur dyes of other origins are also present, for example linked sulfur dyes (CI Sulfur Dyes), leuco sulfur dyes (CI Leuco Sulfur Dyes) and sulfur dyes solubilized by thiosulfato groups (CI Solubilized Sulfur Dyes), as described in the German published documents DE-A1-33 12 162 and DE-A1-33 38 267 may be mentioned, can be included as a component in the dye mixtures used according to the invention.
• linked sulfur dyes CI Sulfur Dyes
• leuco sulfur dyes CI Leuco Sulfur Dyes
• sulfur dyes solubilized by thiosulfato groups CI Solubilized Sulfur Dyes
• the present invention is in principle applicable to textile material which consists of polyester / cellulose fiber mixtures, in which case alkali-stable disperse dyes are then present in the dye preparations containing vat and / or sulfur vat dyes and thus for the coloring of the polyester fiber component in the patterning process according to the invention can actively participate.
• the disperse dyes which are essentially different from the other two dye types, are fixed before the vat and / or sulfur vat dyes are converted into their reduced form (vatting) and the subsequent measures for reoxidizing and soaping under alkaline conditions; it can take place by thermosoling or in the HT pull-out process.
• the new process is significantly enriched because it offers commercially available ranges of dye mixtures on the basis mentioned above, in which combinations of both disperse and vat dyes as well as disperse and Sulfur vat dyes are present next to each other, then oxidized together and can thus be used for coloring both types of fibers at the same time without dyeing difficulties.
• a 100% cotton fabric is made according to the so-called pad-steaming process for vat dyes using 10 g / 1 of the Vat Red 14 dye with the C.I. 71110 treated by padding the web from 25 ° C warm, aqueous medium with a pH of about 5.5 and in the presence of an anionic surfactant with a pigment suspension of the insoluble colorant with a liquor absorption of 45% and then at about 115 ° C dries.
• This impregnation is now padded over with an aqueous bonding liquor based on hydrosulphite / sodium hydroxide solution with a 60% liquor application and steamed for a short time with air-free saturated steam at 105 ° C. with conversion to the leuco form, including fixation thereof, on the fiber.
• a level navy blue dyeing of the mixed yarn on the two fiber components is obtained.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Coloring (AREA)
• Detergent Compositions (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=6280624

Family Applications (1)

Country Status (4)

Cited By (1)

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Citations (4)

• 1985
  • 1985-09-11 DE DE19853532341 patent/DE3532341A1/de not_active Withdrawn
• 1986
  • 1986-08-30 EP EP86112030A patent/EP0214580A3/fr not_active Withdrawn
  • 1986-09-09 US US06/905,632 patent/US4723961A/en not_active Expired - Fee Related
  • 1986-09-10 JP JP61211796A patent/JPS6278284A/ja active Pending

Patent Citations (4)

Non-Patent Citations (1)

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