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
  • D06P3/82—Textiles which contain different kinds of fibres
  • D06P3/8204—Textiles which contain different kinds of fibres fibres of different chemical nature
  • D06P3/8223—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and ester groups
  • D06P3/8228—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and ester groups using one kind of dye
  • D06P3/8233—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and ester groups using one kind of dye using dispersed 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
  • Y10S8/916—Natural fiber dyeing
  • Y10S8/917—Wool or silk
• • 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
• • 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
  • Y10S8/92—Synthetic fiber dyeing
  • Y10S8/922—Polyester fiber

Definitions

• polyester portion of the blended fabric with disperse dyes and the cellulose or wool portion with reactive, direct, developing, leuco vat ester, vat, and sulfur vats are usually used - or sulfur dyes dyed or printed.
• Difficulties are encountered in the proportion of disperse dye which does not completely pass over to the polyester during dyeing, but remains on the cellulose or wool fiber and soils it, which has a negative effect on the brilliance of the dyeing and its fastness.
• the dye remaining there has a different, cloudy shade than that dissolved in the polyester fiber. This is particularly noticeable with light or brilliant colors. Worsened due to its insufficient affinity for cellulose or wool fibers he also the wet, rub and light fastness of the coloring. This manifests itself, for example, in subsequent washing processes, for example the household washing of the consumer, by the fact that disperse dye bleeds out again and again and dyes other colored or even white accompanying fabrics. This is a particular problem with deep dyeings, for which dye excesses are used, with dyeings in which the cellulose or wool content is to remain undyed or with prints where there are differently colored or printed and unprinted areas.
• the dyes of the general formula I are known in principle as dyes for the production of brilliant orange dyeings with a high level of fastness or as dyes which can be used as a strong yellow in dye mixtures for black, brown, olive and other shades and e.g. described in DP 1932806.
• the dye of the formula I in which R is hydrogen and R 1 is methyl, is commercially available as CI Disperse Orange 151 and is used for dyeing polyester blended fabrics.
• the dyes to be used according to the invention show a significantly lower degree of soiling of the proportion of natural fibers when dyeing polyester wool and in particular polyester-cellulose blended fabrics, e.g. C.I. Disperse Orange 151.
• R preferably denotes ethyl or alkyl having 2 or 3 carbon atoms, which is substituted by alkoxy having 1 to 3 carbon atoms.
• Such radicals are, for example, ethyl, 2-methoxyethyl, 2-ethoxethyl, 2-n-propoxyethyl, 2-i-propoxyethyl, 3-methoxypropyl, 3-ethoxypropyl, 3-n-propoxypropyl and 3-i-propoxypropyl.
• R particularly preferably denotes ethyl or n-propyl which is 3-substituted by alkoxy having 1 to 3 carbon atoms.
• a preferred R 1 is methyl.
• R very particularly preferably denotes ethyl and R 1 is methyl.
• the dyes of the general formula I are known and can be prepared by known processes.
• the polyester portion of the polyester-cellulose or polyester-wool blended fabrics can be mixed with disperse dyes by the so-called pull-out process under HT conditions or at boiling temperature with the addition of a carrier.
• the cellulose or wool portion of the blended fabrics can be mixed with reactive, direct, development , Vat, leuco vat nests, sulfur vat and sulfur or. be dyed with reactive and direct dyes from an aqueous liquor.
• the dyes can also by the so-called continuous process by impregnating the fabric with an aqueous pad liquor containing these dyes, and then fixing these dyes on the fiber by thermosoling, steaming or a so-called Air passage can be applied to the fiber.
• thermosoling steaming
• Air passage can be applied to the fiber.
• chemicals such as e.g. Alkali and reducing agents are applied.
• the alkali fixes the reactive dye on the cellulose or wool fiber by means of a chemical reaction
• the reducing agent converts the vat or sulfur vat dye into a form that is affinity for the cellulose fiber.
• the disperse dye applied to the fabric by means of the printing paste is fixed in the polyester fiber by HT steam, compressed steam or dry heat.
• the dyes to be used according to the invention are preferably printed and preferably dyed polyester-cellulose and in particular polyester-cotton blend.
• the cellulose fraction is preferably colored with sulfur or vat dyes, but in particular with reactive dyes.
• a particularly preferred method is that in which the polyester portion is dyed in the so-called thermosol process and the cellulose portion is dyed with reactive dye, the polyester portion in particular being dyed first.
• the dyes of the general formula I can also be used in mixtures with one another and / or in combination with other disperse dyes in the process according to the invention.
• the dyes or dye mixtures should be as finely divided as possible.
• the fine distribution of the dyes is carried out in a manner known per se by slurrying the dye obtained in manufacture together with dispersants in a liquid medium, preferably in water, and subjecting the mixture to the action of shear forces, the dye particles originally present being mechanical are crushed to such an extent that an optimal specific surface is achieved and the sedimentation of the dye is as low as possible.
• the particle sizes of the dyes are generally between 0.5 and 5 ⁇ m, preferably around 1 ⁇ m.
• the dispersants used in the grinding process can be nonionic or anionic.
• Nonionic dispersants are, for example, reaction products of alkylene oxides, such as, for example, ethylene or propylene oxide with alkylatable compounds, such as, for example, fatty alcohols, fatty amines, fatty acids, phenols, alkylphenols and carboxamides.
• Anionic dispersants are, for example, lignin sulfonates, alkyl or alkyl aryl sulfonates or alkyl aryl polyglycol ether sulfates.
• the dye preparations thus obtained are said to be pourable for most applications.
• the dye and dispersant content is therefore limited in these cases.
• the dispersions are adjusted to a dye content of up to 50 percent by weight and a dispersant content of up to about 25%.
• the dye content is usually not below 15 percent by weight.
• the dispersions can also contain other auxiliaries, e.g. those that act as oxidizing agents, e.g. Sodium m-nitrobenzenesulfonate or fungicidal agents such as e.g. Sodium o-phenyl phenolate and sodium pentachlorophenolate.
• auxiliaries e.g. those that act as oxidizing agents, e.g. Sodium m-nitrobenzenesulfonate or fungicidal agents such as e.g. Sodium o-phenyl phenolate and sodium pentachlorophenolate.
• the dye dispersions obtained in this way can be used very advantageously to prepare printing pastes and dyeing liquors. They offer particular advantages e.g. in the continuous process, in which the dye concentration of the dye liquors must be kept constant by continuously feeding the dye into the running apparatus.
• Powder settings are preferred for certain areas of application. These powders contain the dye or dye mixture, dispersants and other auxiliaries such as e.g. Wetting, oxidizing, preserving and dedusting agents.
• a preferred production process for powdery dye preparations is that the liquid is removed from the liquid dye dispersions described above, for example by vacuum drying, freeze drying, by drying on drum dryers, but preferably by spray drying.
• the required amounts of the dye settings which have been prepared according to the above information are diluted with the dyeing medium, preferably with water, to such an extent that a liquor ratio of 1: 5 to 1:50 results for the dyeing.
• further dyeing aids such as dispersing, wetting and fixing aids, are generally added to the liquors.
• the required amounts of the dye settings are used together with thickeners, e.g. Alkali alginates or the like, and optionally other additives such as e.g. Fixing accelerators, wetting agents and oxidizing agents, kneaded into printing pastes.
• thickeners e.g. Alkali alginates or the like
• additives e.g. Fixing accelerators, wetting agents and oxidizing agents, kneaded into printing pastes.
• the dyes and dye mixtures are preferably used as liquid preparations in the process according to the invention.
• the pre-dyed mixed fabric is then subjected to the dyeing conditions of a subsequent reactive dyeing, but without dye.
• the blended fabric is padded at 25 ° C with a chemical bath that contains 240 g / liter table salt, 15g / liter soda, 11.3 g / liter 50% sodium hydroxide solution and 4 g / liter an oxidizing agent based on a benzenesulfonic acid derivative 90-100% liquid absorption squeezed and steamed at 102-105 ° C for 45 seconds.
• the blended fabric is rinsed in hot water and dried.
• the effect can be illustrated by removing the cotton portion of the blended fabric after dyeing with sulfuric acid.
• the remaining polyester portion is colored much more brilliantly when using the dye to be used according to the invention than when using commercially available dyes.

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• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Coloring (AREA)

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Publications (1)

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Cited By (8)

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Citations (3)

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• 1990
  • 1990-01-29 DE DE4002482A patent/DE4002482A1/de not_active Withdrawn
• 1991
  • 1991-01-22 US US07/643,213 patent/US5102425A/en not_active Expired - Fee Related
  • 1991-01-22 EP EP91100762A patent/EP0440072A1/de not_active Withdrawn
  • 1991-01-28 JP JP3008626A patent/JPH04214478A/ja not_active Withdrawn

Patent Citations (3)

Non-Patent Citations (1)

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