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
  • D06P1/44—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
  • D06P1/5257—(Meth)acrylic acid
• • 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
• • 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 process for the block dyeing of web-like textiles which consist of or contain cellulose fibers, preferably of knitted tubular fabrics, with reactive dyes after a cold dwell process.
• the hose fabric is double when padding in the pinch joint of the foulard, which means that the pinch edges receive less liquor than the rest of the material in the double layer. If there is no effective compensation, the pinch edges are clearly marked as lighter vertical stripes.
• the coloring through of the double layer (and the individual threads) is also impaired, which has the effect that the inside of the tube is colored lighter and more unevenly than the outside.
• the entire product image is often restless. Such goods are not for sale, which has led to recommendations to use devices that enable edge displacement or air blowing. However, this has not always led to complete success.
• the block cold dwelling process of cellulose fiber tubular knitted fabrics with reactive dyes is known per se, e.g. B. from TEXTIL-BETRIEB, 7-8, 1976, pages 43-45.
• sheet-like textiles consisting of or containing cellulose fibers, preferably tubular knitted fabrics, are dyed with aqueous liquors, while avoiding the difficulties mentioned in terms of levelness and dyeing after a cold dwell process at temperatures between about 5 ° C. and about 40 ° C.
• the fleet containing reactive dyes, fixing alkalis and wetting agents if the fleet is additionally added to polymers or copolymers of an acrylic acid amide in an amount of 0.4 to 5 g / l in the form of aqueous solutions.
• the polymers of acrylic acid amide used or their copolymers with the other monomers mentioned above under a) to e) preferably have a molecular weight of 1.0. 10 6 to 2.5. 10 6 on.
• the padded liquors behave favorably during the residence process on the material, likewise to the surprise of the person skilled in the art.
• the liquor is absorbed higher, the liquid on the docked goods (chum) tends to "sag" much less when lingering without rotation or when destacking (accumulation of the liquor in the lower part of the goods under the influence of gravity) than when one increases wanted to force the fleet up to values above 120% without reducing these products by reducing the roller pressure of the foulard.
• the increased fleet intake in turn has two surprising effects. First and foremost, as has already been shown, it causes the unevenness that the textile material exhibits immediately after leaving the foulard to be diffused, ie during the dwell process, the liquor migrates to the places where it has become Squeezing less of it.
• the second effect is that the depth of color increases in proportion to the additional fleet intake.
• caprolactam which according to the invention is always mentioned together with the acrylic polymers, is used according to the new process to stabilize the acrylic polymers against autoxidation.
• all sheet-like textiles which consist of or contain cellulose are suitable for the process according to the invention, ie. H. Woven or knitted fabrics, but preferably tubular knitted fabrics in which the levelness is particularly important.
• W. Woven or knitted fabrics it is even possible to use stool-raw goods (particularly advantageous in the case of very full or covered shades), but desizing is inevitable for all sized materials.
• the effect is less pronounced with flat or dense fabrics and with fiber mixtures; the application concentrations of the polymers should then be somewhat higher.
• the organic dyes known under this term come into consideration as reactive dyes.
• This dye class is referred to in the COLOR INDEX, 3rd edition, 1971, as »Reactive Dyes «. These are predominantly those dyes which contain at least one group which is reactive with polyhydroxyl fibers, a precursor therefor or a substituent which is reactive with the polyhydroxyl fiber.
• Particularly suitable as the basic body of the organic dyes are those from the series of the azo, anthraquinone and phthalocyanine dyes, it being possible for the azo and phthalocyanine dyes to be both metal-free and metal-containing.
• reactive groups and precursors which form such reactive groups are, for example, epoxy groups, the ethylenimine group, the vinyl grouping in the vinylsulfone or acrylic acid radical, also the ⁇ -sulfatoethylsulfone group, the ⁇ -chloroethylsulfone group, the ⁇ -phosphatoethylsulfonyl group or the ß-dialkyl group .
• derivatives of the tetrafluorocyclobutyl series e.g. B. the tetrafluorocyclobutyl acrylic acid in question.
• the reactive substituents in reactive dyes are those that are easily removable and leave an electrophilic residue. Examples of suitable substituents are 1 to 3 halogen atoms on the following ring systems: quinoxaline, triazine, pyrimidine, phthalazine, pyridazine and pyridazone. Dyes with several identical or different types of reactive groups can also be used.
• Some of the polymer products used according to the invention are known (DE-A-2 542 051, CASSELLA AKTIENGESELLSCHAFT), but they are used for a completely different purpose, namely to suppress the “frosting effect” when dyeing polyester fibers with disperse dyes.
• the padding liquors are first prepared without alkali by hot dissolving of the dye, the wetting agent and the intended polymeric acrylic acid amide product, the selected alkali is metered into the chassis using a metering device, and the cellulose tubing is padded on a padder at 5 -40 0 C, straight edge docked or paneled and covered with foil.
• a mixture of water glass and sodium hydroxide solution has proven very useful as an alkali (cf. the known water glass process according to DE-B-1 619 510 and DE-B-1 619 513), since this prevents the exposed edges of the material from becoming brighter on the bead becomes.
• the aftertreatment is carried out in the usual way by rinsing well and neutral soaping.
• a raw tubular knitted fabric made of cotton is padded with a liquor containing 45 g of the reactive dye Reactive Black 5 (COLOR INDEX No. 20 505), 15 on a special pad for jersey at a roller pressure of 1 bar / cm 2 and at room temperature g of the reactive dye of the formula 8 g of a commercially available anionic wetting agent and 30 g of linear polyacrylic acid amide (padding aid) in the form of its 4.3% by weight aqueous solution (molecular weight 1.4-10 6 ).
• the fleet intake achieved here is 183%.
• the aftertreatment is carried out in the usual way by thorough rinsing and hot neutral soaping with a nonionic detergent (0.5 g / l of the addition product of 8 mol of ethylene oxide and 1 mol of nonylphenol) for 20 minutes at 90 ° C.
• a nonionic detergent 0.5 g / l of the addition product of 8 mol of ethylene oxide and 1 mol of nonylphenol
• the cotton jersey has an unusually rich black color that is level in every respect.
• Untreated cotton jersey (interlock) is padded on a special fabric for knitted fabrics at a roller pressure of 1 bar / cm 2 and at 22 ° C with an aqueous liquor, which contains 21 g of the reactive dye Reactive Orange 16 (COLOR INDEX No. 17 757) in liters.
• the reactive dye of the formula 8 g of a commercially available anionic wetting agent and 30 g of the copolymer (padding aid) made from acrylic acid amide and the half ester of maleic acid with the polyglycol ether from the addition product of 8 moles of ethylene oxide with 1 mole of isotridecyl alcohol in a weight ratio of 1: 0.075 (based on the acrylic acid amide) in the form of its 4 , 3% aqueous solution (molecular weight of the copolymer mentioned 1.47.10 6 ).
• the fleet intake achieved here is 171%.
• the dyeing is carried out as described above, but with omission of the acrylic acid amide copolymer, after padding and squeezing, a liquor absorption of only 104% is achieved at the same squeezing pressure.
• the color obtained here differs in color depth from that obtained with the addition of the acrylic acid amide copolymer by a value proportional to the various liquor recordings and is uneven (edge marking).
• Bleached terry toweling made of cotton is padded on a padder at a squeezing pressure of 1 bar / cm 2 and a temperature of 24 ° C. with an aqueous liquor which contains 22 g of the reactive dye of the formula in liters 25 g of the reactive dye of the formula 15 g of the reactive dye of the formula 8 g of a commercially available anionic wetting agent and 30 g of the copolymer (padding aid) made of acrylic acid amide and acrylamidopropionesulfonic acid in a weight ratio of 1: 0.1 (based on the acrylic acid amide) in the form of its 4.3% aqueous solution (molecular weight of the copolymer mentioned 1.90 - 10 6 ).
• the required fixing alkali is metered into the chassis by means of a metering pump in an amount of 120 cm 3 of a commercially available sodium water glass solution with a specific weight of 1.41 (42 ° Be), in which the ratio Na 2 0 to Si0 2 is 1: 2.5. and 20 cm 3 of caustic soda 32.5 percent by weight per liter of padding liquor.
• the fleet intake is 167%.
• An untreated tubular knitted fabric made of a mixed yarn of 50% cotton and 50% polyacrylonitrile fibers is padded on a pad at a roller pinch pressure of 1 bar / cm 2 at 22 ° C. with an aqueous liquor which contains 3.8 g of the reactive dye Reactive in liters Black 5 (COLOR INDEX No. 20 505), 15.0 g of the reactive dye of the formula 8 g of a commercially available wetting agent (anionic) and 40 g of branched polyacrylic acid amide (padding aid) in the form of its 4.3% by weight aqueous solution (molecular weight 1.4.106).
• the required alkali is metered in via a metering device in an amount of 120 cm 3 of a commercially available water glass solution with a specific weight of 1.41 (42 ° Be) in which the ratio Na 2 0 to SiO 2 is 1: 2.5 and 16 cm 3 32.5% sodium hydroxide solution per liter of padding liquor.
• the fleet intake achieved here is 113%.
• a full and level navy blue dyeing is obtained on the cellulose fiber portion of the knitted fabric without any edge marking. If the addition of the said polyacrylic acid amide is omitted and the procedure is otherwise as described above, a liquor absorption of only 78% and a lighter color corresponding to the lower liquor absorption are obtained with the same roller pressure.
• a raw, round knitted fabric made from a mixed yarn of 50% polyester fibers and 50% cotton fibers is padded on a padder at 20 ° C. with an aqueous liquor which contains 24 g of the reactive dye of the formula in liters 15 g of the reactive dye of the formula 8 g of an anionic commercial wetting agent, and 40 g of the copolymer (padding aid) made of acrylic acid amide and the half ester of maleic acid with the polyglycol ether from the addition product of 8 moles of ethylene oxide with 1 mole of stearyl alcohol in a weight ratio of 1: 0.08 (based on the acrylic acid amide) in Form of its 4.3% aqueous solution (molecular weight of the copolymer mentioned 1.4-10 6 ).
• the fleet intake achieved here is 128%.
• the dyes are fixed within 6 hours by lingering at room temperature.
• the cotton portion is dyed in a full and perfectly level red shade.
• the polyester fiber portion is covered on the reel runner by carrier dyeing with disperse dyes at cooking temperature following a rinsing process.
• Raw raw cotton interlock knitted fabric in tubular form is padded on a tricot pad at a roller pressure of 1 bar / cm 2 and at room temperature with a liquor which contains 30 g of the reactive dye of the formula in liters 30 g of the reactive dye of the formula 7 g of a commercially available anionic wetting agent, 40 g of the padding aid described in Example 5 and 80 g of urea.
• the required fixing alkali is metered into the chassis in an amount of 8 cm 3 sodium hydroxide solution 32.5% and 10 g sodium carbonate anhydrous per liter of dye liquor using a metering device.
• the fleet intake is 171%.
• a tubular fabric made of cotton is padded at a pressure of 1 bar / cm 2 and at room temperature with an aqueous liquor on a pad, which contains 60 g of the reactive dye of the formula in liters 6 g of a commercially available anionic wetting agent and 40 g of the padding aid described in Example 1 in the form of a 4.3% aqueous solution.
• the required fixing alkali is metered into the chassis in an amount of 30 g sodium carbonate anhydrous per liter of padding liquor using a metering pump.
• the fleet intake is 173%.
• the liquor absorption is then only 105% (with the same roller pressure).
• the color depth corresponds to the lower liquor absorption.

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

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Publications (2)

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• 1979
  • 1979-05-09 DE DE19792918607 patent/DE2918607A1/de not_active Withdrawn
• 1980
  • 1980-05-06 EP EP80102447A patent/EP0019188B1/de not_active Expired
  • 1980-05-06 DE DE8080102447T patent/DE3064569D1/de not_active Expired
  • 1980-05-06 AT AT80102447T patent/ATE4467T1/de not_active IP Right Cessation
  • 1980-05-07 US US06/147,595 patent/US4304567A/en not_active Expired - Lifetime
  • 1980-05-07 AR AR280929A patent/AR222226A1/es active
  • 1980-05-08 AU AU58218/80A patent/AU533170B2/en not_active Expired
  • 1980-05-08 JP JP6004980A patent/JPS55152876A/ja active Granted
  • 1980-05-08 CA CA000351473A patent/CA1140304A/en not_active Expired
  • 1980-05-08 BR BR8002843A patent/BR8002843A/pt unknown
  • 1980-05-08 MX MX182243A patent/MX150868A/es unknown
  • 1980-05-08 PT PT71206A patent/PT71206B/pt unknown

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