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
  • D06P3/8238—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and ester groups using different kinds of dye
  • D06P3/8252—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and ester groups using different kinds of dye using dispersed and 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
  • 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
  • D06P3/34—Material containing ester groups
  • D06P3/52—Polyesters
  • D06P3/54—Polyesters using dispersed dyestuffs
• • 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

Definitions

• the present invention relates to the single-bath / single-stage dyeing of textile material made of linear polyester fibers in a mixture with cellulose fibers using the pull-out technique from an aqueous medium simultaneously with disperse dyes and reactive dyes under approximately neutral pH conditions at essentially cooking temperature of the treatment liquid used for this purpose.
• the multi-stage processes in the mentioned field of application also include those using combinations of disperse and reactive dyes in the same bath (single-bath process) with an intermediate pH change (DE-B-21 58 314) or with a sliding pH transition in the course the dyeing operation from an acidic to an alkaline environment or vice versa (DE-B-14 69 750 and DE-B-16 19 464).
• single-bath / one-step pull-out dyeing proofs are also available for the joint coloring of such mixtures of regular PES fibers and cellulose fibers with disperse dyes and reactive dyes, according to which the dye types present next to each other in the treatment bath are simultaneously fixed on the two components of the fiber mixture.
• Such special processes must first and foremost be geared towards the provision of conditions that are equally beneficial for the different dyes during the pulling-out and fixing process.
• the reactive dyes used are usually subject to the restriction with regard to a certain chemical constitution of their fiber-reactive system (DE-A-33 14 663) and require at least extensive pH constancy to be maintained during dyeing, if appropriate with the aid of buffer substances (EP-B-0 021 044 and DE-B-29 13 718), which excludes the alkaline fixation of the reactive dyes, which is harmful to most disperse dyes but is otherwise customary.
• the dyes CI Disperse Blue 79 (11345) or CI Disperse Red 90 (11117) or CI Disperse Yellow 66 cannot be used at pH values above 6 and, for example, the dyes result in CI Disperse Yellow 54 or CI Disperse Red 281 or CI Disperse Blue 56 on regular PES fibers only dyeings with low thermosetting fastness.
• the object of the invention explained below was therefore to be able to dye polyester / cellulose fiber mixtures in a single-bath / single-stage drawing process using disperse and reactive dyes in a time-saving and cost-saving manner.
• Good color yield and reproducibility of the dyeings, independence from fluctuations in the dyeing conditions as well as levelness of the product appearance of the process products are indispensable for the usability of a new method developed with this objective.
• the present invention thus relates to a process for single-bath / single-stage dyeing of textile material made from linear polyester fibers in a mixture with cellulose fibers using the pull-out technique from an aqueous medium simultaneously with disperse dyes and reactive dyes under approximately neutral pH conditions by heating to bath temperatures around the boiling point, which thereby is characterized in that the dyeing material comprising carrier-free dyeable blends with the cellulose fibers electrolyte-containing liquors containing combinations of dispersed or dissolved dyes of the above different types for both types of fibers and, if appropriate, also conventional dyeing auxiliaries, with the exception of carriers, in the presence of pH-regulating chemicals at pH values in the range between 6 and 8.5, preferably between 6 and 8.5 5 and 8, and at temperatures between 90 ° and 105 ° C, preferably between 95 ° and 100 ° C, colored.
• Carrier-free dyeable PES fibers in the sense of this invention are understood to be those hydrophobic, synthetic fibers which, as a result of special modification of the basic fiber components, can be dyed with disperse dyes at cooking temperature without the addition of carriers (dyeing accelerators) and which show a dyeability that is as good as that of regular PES -Fibers ("normally" dyeable, unmodified PES fiber types) that have to be dyed even at cooking temperature with carrier additive or under HT conditions.
• a modification of this type includes the condensation of chain links loosening the normal strength of the uniform polymeric fiber structure from bifunctional, ester-forming monomeric compounds into the polyesters serving as base polymers.
• polyethylene terephthalate PETP
• PBTP polyethylene terephthalate fiber
• PBTP polybutylene terephthalate fiber
• Copolymers of ethylene terephthalate and comonomers bearing acid groups are also among the carrier-free dyes PES fibers.
• this also includes PES fiber types with incorporated phosphorus-containing chain links which, by copolymerizing organophosphorus compounds based on bifunctional phosphinic acid derivatives, for example carboxyphosphinic acids according to DE-C-23 46 787, are rendered flame-retardant in linear phthalates and at the same time can be dyed at low temperatures are.
• the cellulose fibers present together with the special PES fiber component defined above as the second constituent in the fiber blends used according to the invention include primarily cotton, mercerized and leached cotton, furthermore regenerated cellulose, linen and other natural fibers of cellulose-containing origin.
• the material composition of the textile articles to be dyed by the claimed process can vary over a wide range in the mixing ratio of carrier-free dyeable PES fiber to cellulose fiber and - based on the weight - between 5:95 and 95: 5, preferably between 30:70 and 70:30, the proportions of the two different fiber components each making up 100 parts of the total mixture.
• the underlying single-fiber components mixtures of several different types of PES and / or cellulose fibers can also be present.
• the invention in question is in principle applicable to the dyeing of the aforementioned fiber mixtures in all presentation forms (processing states), for example as a woven, knitted, fleece, yarn, loose material or sliver. In this context, it can be intimate fiber blends or act on substrates of warp and weft different fibers.
• the dyeing of the fiber mixtures described above with disperse and reactive dyes in accordance with the special conditions of the claimed process is carried out using the conventional extraction technique. All dyeing units suitable for pull-out dyeing are suitable for this purpose.
• pH of the aqueous dyebaths used for this purpose is adjusted according to the invention by adding pH-regulating chemicals such as inorganic acids or water-soluble organic mono- or dicarboxylic acids from the class of aliphatic or aromatically substituted compounds or their water-soluble salts or by means of alkali or alkaline earth metal hydroxides or mixtures these compounds are set to values between 6 and 8.5, preferably between 6.5 and 8, with or without the aid of buffering.
• pH-regulating chemicals such as inorganic acids or water-soluble organic mono- or dicarboxylic acids from the class of aliphatic or aromatically substituted compounds or their water-soluble salts or by means of alkali or alkaline earth metal hydroxides or mixtures these compounds are set to values between 6 and 8.5, preferably between 6.5 and 8, with or without the aid of buffering.
• neutral salts present as electrolytes in the pull-out liquors, especially Na chloride (table salt, sea salt, rock salt) and crystallized or anhydrous di-Na sulfate (Glauber's salt) as well as phosphates, acetates, borates, carbonates but also other salts of sodium or To call potassium.
• Na chloride table salt, sea salt, rock salt
• di-Na sulfate Crystallized or anhydrous di-Na sulfate
• phosphates, acetates, borates, carbonates but also other salts of sodium or To call potassium.
• table salt and Glauber's salt the amounts required for this are usually 10-100 g / l, preferably 20-80 g / l.
• the term “cooking temperature range” is to be understood to mean the range between 90 ° and 105 ° C., preferably between 95 ° and 100 ° C., the temperatures which may be slightly above the cooking point of the dyebath at the respective normal pressure (atmospheric pressure) under increased pressure can come about.
• the statement just made about the The temperature control of the exhaust process relates to the final dyeing temperature, that is, dyeing is usually started at lower temperatures (for example between 20 ° and 60 ° C.) and then the liquor is heated to the aforementioned dyeing temperature.
• the measures according to the invention for carrying out the single-bath / single-stage dyeing methods include that disperse dye, reactive dye, pH-regulating substances, neutral salt, possibly dispersing agents and / or further dyeing auxiliaries (with the exception of carriers) are added to the dye bath from the start, before the dyeing bath - Final temperature is heated.
• the dyeing time even at the final dyeing temperature is between 10 minutes and 3 hours, preferably between 30 minutes and 2 hours.
• the bath and the textile material therein are cooled, if necessary.
• the colored goods are then finished by rinsing with water with or without the addition of surfactants, hot or boiling soap and rinsing again with water.
• Alternating steaming with saturated steam and rinsing with cold or warm water can also be considered for completion.
• Aftertreatment of the dyeing with customary cationic aftertreatment agents is also useful.
• tone-on-tone dyeings can be produced on the two fiber mixture components, and multicolor effects can be shaded.
• the disperse dyes which can be used according to the invention include all of the products known for the dyeing of carrier-free dyeable PES fibers understand. Most representatives of this class of dyes are constitutionally azo, anthraquinone, nitro or quinophthalone compounds, are predominantly free of carboxyl and / or sulfonic acid groups and, in the case of azo dyes, can be present as a metal complex compound.
• disperse dyes which are marketed under the generic name (CI Generic Name)
• those organic compounds with dye character are of particular interest which, as a fiber-reactive system, have an aromatic nucleus of the chromophore directly or via a short-chain, preferably aliphatic Bridge link bound Vinylsulfonyl-, ⁇ -sulfato-ethylsulfonyl-, ⁇ -thiosulfato-ethylsulfonyl-, ⁇ -chloro-ethylsulfonyl-, ⁇ -dialkylamino-ethylsulfonyl-, ethylene-imidyl-, if necessary substituted acrylamide - (such as the ⁇ -bromo or ⁇ -tetrafluorocyclobutyl derivative), ⁇ -chloroacetic acid amide, ⁇ -chloro or ⁇ -sulfato or ⁇ -alkylsulfone propi
• Suitable chromophoric bodies of these water-soluble dyes with reactive groups are, in particular, those from the azo, anthraquinone and Phthalocyanine compounds, where the azo and phthalocyanine dyes can be both metal-free and metal-containing.
• Reactive dyes of the type defined above often have more than one sulfonic acid group (except in the reactive grouping of the dye) in the molecule, which can be distributed as desired over the chromophore, but are preferably bound to its aromatic radicals.
• at least one substituted s-triazinyl group of the formula type (I) or (II) in the same molecule at least one further reactive group of a different chemical structure, preferably of the vinylsulfone type, can also be present in these fiber-reactive dyes.
• Dyes containing quaternary ammonium or pyridinium groups bonded to the reactive triazinyl radical are not only described in German Offenlegungsschrift DE-A-33 14 663 but also in US Pat published Japanese patent applications JP-A-60/181373, JP-A-60/181374, JP-A-60/181376 and JP-A-60/181377.
• Both the disperse dyes and the reactive dyes can be used individually or in combination (polychromy) in the context of the dye mixtures selected according to the invention.
• the disperse dyes and reactive dyes envisaged for dyeing according to the invention can also expediently be premixed in bulk and then used in premixed form. These premixes can be available as powder or liquid formulations.
• these disperse dyes which are known to be pH-sensitive, show significantly less pH-sensitivity in the course of the dyeing of the fiber mixtures according to the invention than if they were used in the usual way for dyeing unmixed, carrier-free dyeable PES fibers (ie without the simultaneous presence of cellulose fibers, reactive dyes and salt) would have been used.
• the process according to the invention represents an enormous advance in knowledge and technology in terms of the safe, reproducible production of pull-out dyeings on mixtures of modified PES and cellulose fibers with the least possible expenditure of time and process and with the least possible dye costs.
• 10 g of a yarn consisting of an intimate mixture of 5 g of a carrier-free dyeable PES fiber of the type of a polypropylene glycol-modified polyethylene terephthalate (PETP) and 5 g of cotton are at 40 ° C. in 200 ml of an aqueous dyebath introduced, which 50 mg of the dye CI Disperse Blue 33 and 60 mg of a commercial setting of the blue reactive dye of the following formula and 10 g of Glauber's salt, 0.2 g of a dispersant of the lignin sulfonate type and 1 g of crystallized di-Na phosphate and the pH of which was adjusted to 7.5 using acetic acid.
• This pulling-out liquor is then heated to 98-100 ° C. within 20 minutes with good movement of the yarn and the textile material is then left at the treatment temperature regulated in this way for 45 minutes under the action of the dyeing batch. Subsequently, the drawn bath and the goods are allowed to cool to 70-80 ° C., the dyed yarn is then rinsed with water, soaped twice for 10 min each in an aqueous medium at cooking temperature and finally rinsed again with water. A rich blue color with good tone-on-tone quality and very good fastness properties is achieved on the blended yarn.
• Example 1 If the dyeing operation is carried out as described in Example 1, but using a fabric which consists of 1 g of the modified PETP fiber mentioned there (processed as a blend component in the warp) and 9 g of cotton (processed as a blend component in the warp and unmixed) there is 15 mg of the blue disperse dye given in Example 1 and 135 mg of the blue reactive dye described there in the dyeing liquor, otherwise using the same treatment conditions, then a blue tone-on-tone Coloring with very good fastness properties.
• Example 1 If the dyeing operation is carried out as described in Example 1, but using 10 g of a twisted yarn which consists of a mixture of 3 g of viscose and 7 g of a polyethylene terephthalate fiber modified with polyethylene glycol in the form of a block copolymer, and sets in the bath with otherwise the same treatment conditions as in Example 1, instead of the colorants given there, 100 mg of the dye CI Disperse Yellow 114 and 500 mg of a commercial setting of the yellow reactive dye of the following formula a, then a rich yellow color of the yarn with good fastness properties is obtained after customary completion.
• a laboratory device for dyeing fiber material in the packing system which is loaded with an intimate mixture of 10 g of cotton flake and 10 g of a polybutylene terephthalate (PBTP) fiber, is charged at 20 ° C. with 200 ml of an aqueous dye bath, which contains 40 mg of a commercially available Adjustment of the red reactive dye using the following formula and 40 mg of the CI Disperse Red 54 dye, in addition 2 g of sodium chloride, 0.8 g of di-Na phosphate and 0.2 g of mono-Na phosphate contains and whose pH is 7.4. Now this pull-out liquor is heated to 95 ° C.
• PBTP polybutylene terephthalate
• Example 4 Under the conditions described in Example 4, 10 g of a knitted fabric is dyed, which is processed in strips and consists of 95% yarn of a polyethylene terephthalate fiber modified with butylene glycol and 5% of mercerized cotton. A pink / red knitted fabric with good fastness properties is obtained in this way.
• Example 5a if a knitted fabric which has an inverse fiber mixing ratio is used when carrying out the dyeing as in Example 5a, the result is also a pink / red patterned knitted fabric with good fastness properties.
• the dyed yarn is then rinsed with water, soaped twice in an aqueous medium at cooking temperature with the addition of 1 g / l of a nonylphenol oxyethylate and finally again warm and then cold rinsed with water.
• an orange dyeing in the form of a melange effect is achieved in accordance with the special composition of the blended yarn, which is characterized by very good fastness properties.
• 10 g of a yarn consisting of a mixture of 2 g of a polyethylene terephthalate fiber modified with adipic acid and 3 g of one obtained by condensing in a block copolymer are used in the dyeing process in accordance with the conditions mentioned in Example 6
• Polyethylene glycol and terephthalic acid-modified polycyclohexanediol adipate fiber and 5 g of leached cotton an orange-colored yarn is also obtained, this coloring as a result of the fiber mixture showing a melange effect.
• a fiber mixture is dyed under the conditions mentioned in Example 1, but in the present case consisting of 50% of a PETP fiber modified with polyethylene glycol in the form of a block copolymer and 50% linen, and the aftertreatment of this dyeing is carried out as follows: draining the dye bath and the dyed goods afterwards 1 min rinsing with cold water, 1 min steaming at 102-105 ° C, 1 min rinsing with cold water, 1 min steaming at 102-105 ° C, 1 min rinsing with cold water, 1 min steaming at 102- 105 ° C and then rinsing with cold water for 1 min. In this way, a blue colored yarn with excellent wet fastness properties is obtained.
• a reel runner filled with 4000 l of water at 60 ° C is loaded with 100 kg of a raw woven fabric, consisting of cotton in the weft and carrier-free dyeable PES fiber in the warp, and 400 kg is then added to the fleet with running goods within a short time interval Table salt, 2 kg of a wetting agent, 4 kg of a wrinkle inhibitor (lubricant), 4 kg of a dispersing agent, 8 kg of crystallized Na acetate, 2 kg of the dye CI Disperse Blue 333 and 4 kg of a commercially available formulation of the blue reactive dye of the following formula admitted.
• the pH of the treatment bath is now adjusted to 8 using acetic acid and the same is heated to boiling temperature within 45 min.
• the goods are dyed at cooking temperature for 90 minutes, after which a sample is taken from the treated textile material, which is rinsed with water, soaped as usual and water is rinsed again.
• the resulting dye - compared to that on the modified PES fiber - then comes out with too little or too much color depth:
• 100 g of a yarn consisting of 65% of a carrier-free dyeable PES fiber modified by acid comonomers and 35% cotton are introduced into 2 l of an aqueous dyebath at 60 ° C. which contains 160 g Glauber's salt and 10 g borax.
• the pH of this treatment liquid is adjusted to 8.5 using a little soda and then 3 g of a dye mixture consisting of 1 g of the dye CI Disperse Blue 60, 0.01 g of the dye CI Disperse Yellow 122 and 2 are added to the liquor g of a commercially available, turquoise-blue reactive dye of the following formula after slurrying with 50 ml of water.
• This pull-out liquor is now heated to 98-100 ° C and the goods are dyed for 60 minutes.
• the textile material thus treated is first rinsed with water, washed to boiling in an aqueous medium, rinsed again with water and finally exposed to 2 g of a cationic aftertreatment agent in a fresh, aqueous bath at 40 ° C. for 15 minutes. After rinsing the goods again with water, a turquoise-colored yarn with extraordinarily good wet, rubbing and dry cleaning fastness properties is obtained.
• a liquid formulation is prepared, consisting of 50 parts of the blue reactive dye formally described in Example 1, 20 parts of the blue disperse dye given in Example 1 and 130 parts of water, and this is adjusted to a pH of 6. If 5 g of this dye mixture are then applied to a blended yarn of the composition specified there in accordance with the instructions of Example 10, a deep navy blue dyeing with excellent fastness properties is then achieved after completion.
• An intimate mixture of 50 g of a regular, unmodified PES fiber and 50 g of cotton is introduced into 1 l of an aqueous dye liquor which contains 1 g of a dispersant and 2 g of crystallized di-Na phosphate, the pH of which is by means of dilute sulfuric acid has been set to 7.5, and to which 1 g of the CI Disperse Blue 333 dye have been added.
• This bath is now heated to 130 ° C. within 30 minutes with the dyeing vessel closed and the textile material is then left for 60 minutes under the action of the dyeing batch under HT conditions.
• 50 g of a regular, unmodified PES fiber and 50 g of cotton are introduced into 1 l of an aqueous dye liquor which contains 1 g of a dispersant, 2 g of crystallized di-Na phosphate, 50 g Glauber's salt and 2 g of a commercial setting of the blue reactive dye according to the structure given by formula in Example 1 and whose pH has been adjusted to 7.5 using dilute sulfuric acid.
• This bath is now heated to 130 ° C. in the course of 30 minutes and the textile material is then left for 60 minutes under the action of the dyeing batch under HT conditions. After that, the extracted fleet and the goods are cooled; The color is rinsed as usual, soaped at the boil, rinsed again and dried.
• a blue colored cotton component is obtained on the mixed yarn.

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• 1986
  • 1986-12-20 DE DE19863643752 patent/DE3643752A1/de not_active Withdrawn
• 1987
  • 1987-12-16 EP EP87118641A patent/EP0273300A3/fr not_active Withdrawn
  • 1987-12-18 JP JP62319159A patent/JPS63165587A/ja active Pending

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