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
  • D06P3/58—Material containing hydroxyl groups
  • D06P3/60—Natural or regenerated cellulose
  • D06P3/68—Preparing azo dyes on the material
• • 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
  • D06P3/8257—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 azo dyes prepared in situ
• • 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
  • Y10S8/913—Amphoteric emulsifiers for dyeing
  • Y10S8/915—Amino sulfonic acids
• • 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

• the present invention relates to a new process for the dyeing of textile material made from mixtures of polyester and cellulosic fibres.
• a further well-known process is the following:
• the textile material is impregnated with an alkaline solution containing a coupling component, a diazoamino compound, a disperse dyestufi as well as a compound splitting ofi acids when heated.
• formation of the water-insoluble azo dyestuff on the cellulosic fibre portion is caused at temperatures of from 180 to 210 C., at the same time the disperse dyestuff is fixed on the polyester fibre portion, and finally, an alkaline after-treatment is carried out.
• the process of the invention is carried out as follows:
• the textile material for example mixed fabrics made from polyester and cellulosic fibres, the polyester fibre portion of which having been dyed at first with a disperse dyestuif in known manner by impregnation, drying and subsequent heat fixation, is impregnated with an alkaline solution containing a coupling component and a diazoamino compound, a tetrazoamino compound or an anti-diazotate, as well as wetting or dispersing agents, then squeezed out and wound on a roller.
• the alkali content of the impregnation bath has to be kept at a level that keeps the coupling component from precipitation during the'impregnation operation which is carried out at temperatures of from 30 to 60 C.
• the textile material has to be squeezed off thoroughly after its impregnation in order to obtain a very low liquor pick-up of the mixed fabric. After winding up the squeezed goods and dwelling them at room temperature of a slightly elevated temperature for a short time to allow for absorption of the coupling component by the fibre, or after an air-passage of the goods .while guiding them over a roller system, the material is impregnated with an acidic solution and squeezed out again between rollers.
• This second squeezing has to be carried out with a roller pressure as low as possible, in order to secure that resulting from the difference between the first and second squeezing a maximum liquid volume is absorbed by the already wet material.
• the temperature of the acidic impregnation bath should be between 50 and 80 C., so that the splitting and coupling process is instantaneous.
• the content of the compound having an acidic reaction has to be kept at a level which ensures neutralization of the alkali applied to the textile material together with the coupling component in the alkaline impregnation process, as well as a pH value of from 3 to 7 of the material to be dyed.
• the water-insoluble azo dyestutf is produced on the cellulosic fibre portion giving high colour yields and clear shades.
• the dyeings obtained have very good fastness properties.
• textile material to be dyed examples include mixtures containing between 25% of polyester and 75% of cellulosic fibres, and 70% of polyester and 30% of cellulosic fibres.
• Suitable polyester fibres in the blend are fibres made from aromatic polyesters, for example from terephthalic acid or diphenyl-4,4dicarboxylic acid and alkane diols or 1,4-cyclohexane-di-methanol, as well as consisting of triacetyl cellulose.
• the cellulosic fibre portion may be of natural orregenerated origin.
• Examples of the coupling components to 1 be used in the process of the invention are especially aromatic o- 'hydroxy-carboxylic acid arylamides or acylaceticacid arylamides, 'for example 2,3-hydroxynaphthoic acid arylamides, 6-broffi'oor 6-alkoxy-2,3-hydroxynaphthoic acid arylamides or acetoacetic acid 'arylamides, which'have a low to "medium substantivity towards cellulosic fibres.
• a suitable impregnationequipment for example a small bath tank
• also coupling components having substantivity towards cellulosic fibres may be used,
• dia'minodiphenyls and primary or secondary aliphatic or aromatic amines, for example N-alkylated aliphatic aminocarboxylic acids or aminosulfonic acids, N-alkylated aromatic aminocarboxylic acids, aminosulfonic acids, aminosulfocarboxylic acids or cyanamide.
• anti-diazotates there may be used those compounds which are obtainable from the above-mentioned primary aromatic amines.
• Suitable wetting or dispersing agents in the. alkaline impregnation bath are condensation products from highmolecular fatty acids and protein degradation products, condensation products from high-molecular fatty acids and aminoalkyl-sulfonie acids as well as purified sulfitecellulose waste liquor.
• the compounds having an acidic reaction used in the acid developing bath maybe organic acids, such as formic acid, acetic acid, propionic acid, lactic acid, glycolic acid,
• the acidic developing bath contains also an additional quantity of the sodium salt of the corresponding acid used, so that the pH value can be maintained in a range of from 4 m6.
• disperse dyestufi's for the pre-dyeing of. the polyester fibre portion there may be used such dyestuffs which are suitable for the Thermosol process on account of their thermic properties, i.e. dyestuffs which are capable of dyeing polyester fibresflat temperatures of from 170 to 210 C. and which do not soil the dyeing equipment on account of high volatility.
• Suitable disperse dyestuffs of this kind from the azo and anthraquinone series are described in Colour Index, Second Edition 1956, vol. 1, pages 1659-1742 and Supplement 1963, pp. S 179-224, as well as in the corresponding additions and amendments, No. 1 (September 1963) to No. 22 (January 1969).
• the polyester fibre portion of the mixed fabric is dyed under the conditions of the high-temperature dyeing method (115- 125 C.) or at the boil in a long bath using carriers, also such disperse dyestuffs may be used which have no thermic stability at temperatures of from 170 to 210 C.
• Suitable disperse dyestuffs for the dyeing of polyester fibres at a temperature of from 100 C. to 125 C. are also described in Colour Index, Second Edition, 1956. H
• Example A mixed fabric made from 67% of'polyethylene glycol I terephthalate fibres and 33% 'of cotton is impregnated with a solution containing, per litre of water of 30 C., '20 g. of Disperse Red 90, and is subsequently squeezed olf in such a way. that-the. liquor pick-up amounts to 70% of the dry weight of the goods.
• the fabric is dried at a temperature of about 100 C., and subsequently passed through a fixation chamberor over hot rollers, so that it is heated for 60 seconds to 180 210 C.
• the mixed fabric so pre-dyed is then impregnated at 40-60" C. with a solution containing, per litre of water,
• thediazoamino compound obtained from 8.4 g. of diazotized 1 amino 2 methyl 5 chlorobenzene and sodium cyanamide, 10 ml. of a 32.5% aqueous sodium hydroxide solution as well as 20 g. of 1 (2',3' hydroxy naphthoylamino) 2 methoxy 5 chlorobenzene, dis- ,solved in 50 ml. of denaturized alcohol, 10 ml. of a 'taining, per litre of water of C.,- ml. of a 50% acetic acid, 10 g. of sodium acetate and 50 g.
• the fabric is first passed through a water bath of 60 C., then after-treated at 60 C. and at C. in a further bath containing 1 g. of a reaction product of 10 mols of ethylene oxide with 1 mol of nonylphenol, and 3 g. of sodium carbonate, per litre of water; thereupon it is rinsed and dried.
• the aftertreatment of the .dyed fabric may be also carried out in a bath containing with 2 g. of a 25% solution of the sodium salt of nitrilotriacetic acid, per litre of water. An intense red dyeing having good fastness properties is obtained.
• sufi'icient to absorb and level the coupling component on the fibre.
• naphthalene 4-benzoylaminobenzene and sodium N methylamino acetate.
• 0.1. Disperse Yellow 64 and 0.1. Disperse 1-(2'-hydroxyanthracene-3-earboylamin0)- do Green.
• Disperse Red 82 and 0.1. Disperse 1-(2,3'-hydroxynaphthoylamino)-2,4- DA from diazotized l-amino-2-methyl-3- Dull bluish Orange 13. dimethoxy-fi-chlorobenzene. chlorobenzene and sodium cyauamide. red. 0.1. Disperse Red 82 1-(2',3-l1ydr0xynaphthoylamino)-2- AN from diazotized 1-amino-2-methoxy-5- Bluish red.
• Disperse Orange 1 (0.1. 11 080) 1-(2,3'-hydroxynaphthoylamino)-2-methoxy- AN from diazotized 1-amino-2-ehloro-5- Yellowish benzene. trifluorometliylhenzene. re 0.1.
• Dlsperse Red 17 (0.1. 11 210) 2,3-hydroxynaphthoylaminobenzene DA from diazotizecl l-amino-2-methyl-5- Red.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Coloring (AREA)
• Hydraulic Turbines (AREA)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=5734260

Family Applications (1)

Country Status (8)

Cited By (2)

Families Citing this family (2)

• 1969
  • 1969-05-14 DE DE19691924803 patent/DE1924803A1/de active Pending
• 1970
  • 1970-05-06 US US35301A patent/US3679350A/en not_active Expired - Lifetime
  • 1970-05-06 NL NL7006615A patent/NL7006615A/xx unknown
  • 1970-05-11 CH CH696770D patent/CH696770A4/xx unknown
  • 1970-05-11 CH CH696770A patent/CH539168A/de unknown
  • 1970-05-12 AT AT425570A patent/AT296931B/de not_active IP Right Cessation
  • 1970-05-14 FR FR7017603A patent/FR2042644B1/fr not_active Expired
  • 1970-05-14 BE BE750416D patent/BE750416A/xx unknown
  • 1970-05-14 GB GB2347270A patent/GB1305066A/en not_active Expired

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