US3767356A - Dyeing cotton-polyester textiles with one-bath mixture of dispersed and cellulose-reactive dyestuff - Google Patents

Dyeing cotton-polyester textiles with one-bath mixture of dispersed and cellulose-reactive dyestuff Download PDF

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Publication number
US3767356A
US3767356A US00198401A US3767356DA US3767356A US 3767356 A US3767356 A US 3767356A US 00198401 A US00198401 A US 00198401A US 3767356D A US3767356D A US 3767356DA US 3767356 A US3767356 A US 3767356A
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dyeing
cellulose
reactive
dye
dyestuff
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US00198401A
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J Turner
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    • 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
    • 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

  • ABSTRACT A process for dyeing polyester-cellulose union materials in a single bath containing a mixture of disperse and specified cellulose-reactive dyes by heating to a temperature of 100140 C and pH 5.0 to 5.5 until the polyester component'is dyed then cooling to 80 C, adding alkali and a neutral salt if the latter is not already present, and dyeing at 80-90 C to fix the reactive dye.
  • the reactive dyes used are those which when dyed on cotton at 120 C for 45 minutes give an equal or only a marginally less depth of shade than a similar dyeing carried out at 80 C.
  • This invention relates to a new dyeing process and more particularly to a new process for dyeing union textile materials of cellulose and polyester with, respectively, cellulose-reactive and disperse dyestuffs.
  • a number of methods for dyeing union materials of this kind with such dyestuffs are known.
  • the method involves a continuous processing method whereby the material to be dyed is padded in a mixture of dyestuffs and then the latter are fixed on the textile material by a heat treatment.
  • This method is subject to the disadvantage that it can only be carried out in the specialized, expensive machines developed for continuous processing.
  • Two dyeings are carried out on cotton hanks using equal amounts of the dyestuff.
  • the dyebath contains also 80 g/l of common salt and 5 g/l of sodiumm -nitrobenzene sulphonate.
  • dyeing is carried out for 45 minutes at 120 C at pH 50-55 (0.15 g/l of acetic acid). Then, the liquor is cooled to 80 C, sodium carbonate is added (20 g/l) and the dyeing is continued for 45 minutes.
  • method (b) dyeing is carriedout for 45 minutes at 80 C under neutral conditions. Then sodium carbonate is added (20 g/l) and the dyeing is continued for 45 minutes. Both hanks are then rinsed in water and secured atithe boil in 0.3% detergent forminutes to remove loose dyestuff.
  • the two dyeings are of equal strength.
  • the difference can be visually estimated using a geometric grey scale card as used for the effect of washing tests ondyeings, B.S.2663:196l.
  • a dyestuff is considered suitable if the difference in depth is no greater than a grading of 4 on this card;
  • a reactive dyestuff containing the dichloroor dibromo-striazine group is too unstable, even at 80 C, to be suitable for use in this new process.
  • the invention provides a process for dyeing cellulose-polyester union textile materials by a one-bath method wherein the material is treated with a dye liquor containing a mixture of a disperse dyestuff and a suitable (as hereinbefore defined) cellulosereactive dyestuff at pH 5.0-5.5 and a temperature of 100 to 140 C until the polyester component has been dyed with the disperse dye.
  • the dye liquor is cooled to 80C, rendered alkaline and dyeing is continued at 80-90 C at a pH greater than 8.0 until the cellulose component has been dyed with the cellulosereactive dye, at least the second step being carried out in the presence of a neutral .salt to assist exhaustion of the cellulose-reactive dye on to the textile material.
  • cellulose-reactive group As the cellulose-reactive group, a-large number of the cellulose-reactive dyes commercially available at the present time are suitable for use in the new process. Among those suitable are, for example,
  • the dyes include members of the phthalocyanine, anthraquinone and azo, including monoazo, disazo and metal complex azo series.
  • the disperse dyes used can belong, for example, to the azo, anthraquinone, nitro, styryl or quinaphthalone series. They form stable dispersions in the dye liquor and possess good affinity for polyester fibres and good light fastness on the fiber. They are free from strongly ionizing groups such as SO3H and CO H and from groups which are readily converted into strongly ioniz-. ing groups under the dyeing conditions.
  • the new process can conveniently be carried out by the following procedure. First there is formed a weakly acid dye liquor containing both kinds of dyestuffs.
  • acidity is preferably brought about by adding a watersoluble organic acid, e.g., acetic acid.
  • The'dyeliquor preferably contains a small amount of a dispersing agent and of a weak oxidizing agent, e;g., sodium-mnitrobenzene sulphonate.
  • a neutral electrolyte can be added at this stage, but is preferably added at a later stage after dyeing at to C is complete.
  • the dye liquor is heated to dyeing temperature, i.e., 100 to 140 C and maintained at this temperature until the polyester component of the union has been dyed.
  • the dye liquor is cooled to 80 C and, if sufficient neutral electrolyte is not already present, more is added. In this case the dyeing is continued for a period of time, e.g.', for 15 minutes, forpartial exhaustion of the reactive dye to take place. Thereafter the alkali is added and dyeing is continued until fixation of the reactive dye has been achieved. This will normally take from 30 to 90 minutes.
  • dispersing agents there may be used any anionic or non-ionic kinds commonly used for dye liquors containing disperse dyestuffs.
  • disodium methylene naphthalene disulphonate sodium salts of cresol sulphonate/urea formaldehyde condensates and polyethanoxy condensates of aliphatic and aromatic residues, for example of amines, alcohols and phenols.
  • the amount of dispersing agent used may be, for example, from 1 to g/l.
  • neutral electrolytes which can be used, there may be mentioned sodium chloride and sodium sulphate.
  • sodium chloride and sodium sulphate for the first stage of the process, carried out above 100 C, it is desirable to use a maximum of 50 g of the electrolyte per liter of dye liquor, and preferably to carry out this stage in the absence of added electrolyte.
  • electrolyte in the second stage of the process, carried out at from 80 to 90 C, electrolyte must be present and, dependent on the cellulose-reactive dyestuff being used, a higher concentration of electrolyte may be desirable, for example, up to 100 grams of the electrolyte per liter of dye liquor.
  • a wide range of alkaline, but preferably non-caustic, materials may be used, e.g., metal salts of weak inorganic or organic acids, e.g., the hydroxides, bicarbonates, carbonates, silicates and phosphates of sodium or potassium.
  • metal salts of weak inorganic or organic acids e.g., the hydroxides, bicarbonates, carbonates, silicates and phosphates of sodium or potassium.
  • the textile material may be rinsed and subjected to the usual washing treatments conventional in the art for materials dyed with reactive dyestuffs, i.e., including a scouring step with a weak (e.g. 0.3%)solution of a detergent to remove unfixed dyestuff.
  • a scouring step with a weak (e.g. 0.3%)solution of a detergent to remove unfixed dyestuff.
  • the new process has the advantage that it can be carried out in the conventional pressurized dye vessels commonly used for dyeing with disperse dyestuffs and gives a procedure in which only one dye liquor is used.
  • the preferred process omitting the neutral electrolyte while dyeing the polyester component of the union, the chances of aggregation are reduced to a minimum so that the process is extremely convenient for the package dyeing of materials or the dyeing of tightly woven or bulky materials which are extremely suceptible to uneven dyeing if any aggregation takes place.
  • Example 1 1000 parts of a dye liquor are made up containing 3 parts of disperse dye (see below), 1 part of a dispersing agent, sodium salt of cresol sulphonate/ureaformaldehyde condensate, sold under the trademark Dispersol BD, 0.15 part of acetic acid, 5 parts of sodium m-nitrobenzene sulphonate, 50 parts of sodium sulphate and 4 parts of reactive dye (see below). 100 parts of a 67:33 polyester-cotton yarn were entered at 60 C and the dye-liquor was heated to 130 C during 30 minutes and kept at this temperature for 1 hour.
  • the dye liquor is then cooled to 80 C, 20 parts of sodium carbonate (anhydrous) are added and the treatment is continued at 80 C for 1 hour.
  • the yarn is then removed from the dye liquor, rinsed LII in water, scoured in a 0.3% aqueous solution of detergent for 15 minutes at the boil, rinsed again in water and dried.
  • the disperse dye Using as the disperse dye, the product obtained by coupling diazotized 6-bromo-2,4-dinitroaniline with 5-acetylamino-2-methoxy-N-(B'-methoxy-/3- ethoxycarbonylethyl)aniline and as the reactive dye, the product obtained by condensing cyanuric chloride with the 1:1 copper complex of 2-methylamino-6-[4- (2",5"- disulphophenylazo)-5'-methyl-2'- hydroxyphenylazo]-5-naphthol-7-sulphonic acid (1 mole) and ammonia (1 mole), a deep, even, navy-blue dyeing is obtained.
  • Example 2 A dye liquor is made up as in Example 1 except that the sodium sulphate is omitted. Dyeing is then carried out at 130 C as in Example I, and the liquor is cooled to C. Then parts of sodium chloride are added, followed after 10 minutes by 20 parts of sodium carbonate. Dyeing is continued for 50 minutes, then the yarn is washed as in Example 1. A similar result is obtained. What we claim is: 1. A process for dyeing cotton-polyester union textile materials by a one-bath method comprising a.
  • dyeing said material in said bath comprising a dye liquor containing a mixture of a disperse dyestuff and a cellulose-reactive dyestuff at a temperature of 100 to 140 C, said dye liquors having a pH of 5.0-5.5, for a time sufficient to dye the polyester component of said textile material with said disperse dyestuff b. cooling said dye liquor to 80 C c. adding sufficient alkali to said dye liquor so that the pH thereof is greater than 8.0
  • said cellulose-reactive dyestuff being such that the difference in depth of dye shade between l a cotton textile material dyed in accordance with method (a) at C with the said cellulosereactive dyestuff and (2) the said cotton textile materials dyed in accordance with method (12) at 80 C with the said cellulose reactive dyestuff is no greater than a grading of 4 on the geometric grey scale card of 8.8.
  • neutral electrolyte is selected from the group consisting of sodium chloride and sodium sulphate.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)
US00198401A 1970-12-02 1971-11-12 Dyeing cotton-polyester textiles with one-bath mixture of dispersed and cellulose-reactive dyestuff Expired - Lifetime US3767356A (en)

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GB5730370 1970-12-02

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US (1) US3767356A (enrdf_load_stackoverflow)
JP (1) JPS5029547B1 (enrdf_load_stackoverflow)
CA (1) CA950607A (enrdf_load_stackoverflow)
CH (2) CH1741271A4 (enrdf_load_stackoverflow)
DE (1) DE2158314B2 (enrdf_load_stackoverflow)
FR (1) FR2116472B1 (enrdf_load_stackoverflow)
GB (1) GB1349755A (enrdf_load_stackoverflow)
ZA (1) ZA717593B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980426A (en) * 1974-02-02 1976-09-14 Hoechst Aktiengesellschaft Process for printing or pad-dyeing cellulose/polyester mixed fabrics
US3993438A (en) * 1974-04-03 1976-11-23 Imperial Chemical Industries Limited Process for coloring aromatic polyester-cellulose unions with a reactive dyestuff and a disperse dyestuff containing at least two carboxylic acid ester groups
US4017256A (en) * 1974-03-28 1977-04-12 Ciba-Geigy Corporation Process for the printing and pad-dyeing of mixed fabric
US4088441A (en) * 1974-03-18 1978-05-09 Hoechst Aktiengesellschaft Dyestuff composition for the dyeing or printing of cellulose fiber materials
US4264321A (en) * 1978-08-10 1981-04-28 Hoechst Aktiengesellschaft Process for the pad dyeing or printing of cellulose fibers with reactive dyes
US4277246A (en) * 1978-08-10 1981-07-07 Hoechst Aktiengesellschaft Process for the dyeing of cellulose fibers with reactive dyes according to the batchwise exhaustion method
US4297101A (en) * 1978-08-10 1981-10-27 Hoechst Aktiengesellschaft Process for the dyeing of synthetic polyamide fibers with reactive dyes according to the batchwise exhaustion method
US4408997A (en) * 1980-10-30 1983-10-11 Sandoz Ltd. Process for dyeing cotton with reactive dyes in weakly alkaline dye-bath(pH 8.0-8.8)
US5167668A (en) * 1985-04-29 1992-12-01 Hoechst Aktiengesellschaft Process for level exhaust of cellulose fibers with reactive dyes: addition of fixing alkali according to a parabolic time function
WO2016107567A1 (en) * 2014-12-31 2016-07-07 Novozymes A/S Method of treating polyester textile

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4133995A1 (de) * 1990-10-17 1992-04-23 Ciba Geigy Ag Verfahren zum faerben von mischfasern aus cellulosehaltigen fasermaterialien und hydrophoben fasermaterialien
CN115142277B (zh) * 2022-08-03 2023-01-06 浙江迎丰科技股份有限公司 一种涤棉分散活性一浴法染色工艺及其染液组分

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
King, ADR, 2/17/64, p.38 40 *
Wygand, ADR, 12/7/64, p. 106 109 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980426A (en) * 1974-02-02 1976-09-14 Hoechst Aktiengesellschaft Process for printing or pad-dyeing cellulose/polyester mixed fabrics
US4088441A (en) * 1974-03-18 1978-05-09 Hoechst Aktiengesellschaft Dyestuff composition for the dyeing or printing of cellulose fiber materials
US4017256A (en) * 1974-03-28 1977-04-12 Ciba-Geigy Corporation Process for the printing and pad-dyeing of mixed fabric
US3993438A (en) * 1974-04-03 1976-11-23 Imperial Chemical Industries Limited Process for coloring aromatic polyester-cellulose unions with a reactive dyestuff and a disperse dyestuff containing at least two carboxylic acid ester groups
US4264321A (en) * 1978-08-10 1981-04-28 Hoechst Aktiengesellschaft Process for the pad dyeing or printing of cellulose fibers with reactive dyes
US4277246A (en) * 1978-08-10 1981-07-07 Hoechst Aktiengesellschaft Process for the dyeing of cellulose fibers with reactive dyes according to the batchwise exhaustion method
US4297101A (en) * 1978-08-10 1981-10-27 Hoechst Aktiengesellschaft Process for the dyeing of synthetic polyamide fibers with reactive dyes according to the batchwise exhaustion method
US4408997A (en) * 1980-10-30 1983-10-11 Sandoz Ltd. Process for dyeing cotton with reactive dyes in weakly alkaline dye-bath(pH 8.0-8.8)
US5167668A (en) * 1985-04-29 1992-12-01 Hoechst Aktiengesellschaft Process for level exhaust of cellulose fibers with reactive dyes: addition of fixing alkali according to a parabolic time function
WO2016107567A1 (en) * 2014-12-31 2016-07-07 Novozymes A/S Method of treating polyester textile
CN107109780A (zh) * 2014-12-31 2017-08-29 诺维信公司 处理聚酯纺织品的方法
US10202723B2 (en) 2014-12-31 2019-02-12 Novozymes A/S Method of treating polyester textile

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Publication number Publication date
ZA717593B (en) 1972-08-30
CH564122A (enrdf_load_stackoverflow) 1975-07-15
CH1741271A4 (enrdf_load_stackoverflow) 1975-01-31
JPS5029547B1 (enrdf_load_stackoverflow) 1975-09-23
CA950607A (en) 1974-07-09
DE2158314B2 (de) 1977-11-17
DE2158314A1 (de) 1972-06-22
FR2116472A1 (enrdf_load_stackoverflow) 1972-07-13
GB1349755A (en) 1974-04-10
FR2116472B1 (enrdf_load_stackoverflow) 1976-08-20

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