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
  • D06P3/8219—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and amide groups
• • 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
  • D06P1/02—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 azo dyes
  • D06P1/12—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 azo dyes prepared in situ
  • D06P1/127—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 azo dyes prepared in situ using a stabilised diazo component, e.g. diazoamino, anti-diazotate or nitrosamine R-N=N-OK, diazosulfonate, hydrazinesulfonate, R-N=N-N-CN

Definitions

• the present invention relates to a process for the continuous or semi-continuous, single-bath, uniform tone-in-tone dyeing of textile fabrics or knitted fabrics from mixtures of cellulose fibers and synthetic polyamide fibers by a block dyeing technique with a coupling component and a diazo component in the form of a stabilized diazonium compound Insoluble azo dyes produced on the fiber by applying the dye components together under alkaline conditions and the dye development being brought about by the action of acid.
• the dyeing of synthetic polyamide fibers with development dyes is also known, but has never been of great importance because of the process steps to be used, which include a change of liquor.
• the polyamide fiber material with a liquor of an alkaline solute "Naphthol" and a stabilized by T riazin realise not couplable water-insoluble diazonium compound dyed in the form of a fine dispersion for a pull-out procedure, and then the dye coupling after cleavage of the stabilizing moiety of the two Components brought about by treatment in a hot development bath containing sulfuric acid.
• stretch cords - a textile article made of polyurethane threads spun with synthetic polyamide threads and cotton - in practice referred to as stretch cords - has become increasingly important. Because of the tightness of the polyamide encapsulation, the polyurethane fiber itself does not need to be dyed, provided the polyamide threads can be dyed tone-on-tone with the cotton pile.
• a water-soluble diazoamino compound composed of a diazotized, aromatic or heterocyclic amine and cyanamide is used as the diazo component in that both dye components are dissolved in an aqueous, alcohol-containing liquor at from 60 ° to 70 ° C. Pads textile and that this primer is damped immediately after padding and before the acid treatment necessary to release the diazonium compound and coupling without intermediate drying.
• the fiber material has previously been padded close to the cooking temperature in order to reduce the substantivity of the "naphthols" and to obtain the same colors. If you use this temperature to dye polyamide-cellulose fiber mixtures, you get false stains because it is not possible to apply the dye components evenly to both types of fiber.
• the coupling component and the “diazo salt” are dissolved in accordance with the dissolving instructions of the manufacturers and added to the padding liquor which is 60 ° to 70 ° C. and which contains the customary chemicals.
• the fiber mixtures themselves are padded at 60 ° to 70 ° C on one of the usual padding pad machines with 60 to 100% liquor absorption (based on the weight of the dry goods).
• the primed textile is steamed without prior drying. Steaming is carried out at temperatures of 101 ° to 107 ° C., preferably 103 ° to 105 ° C., and at steaming times of 30 seconds to 5 minutes, preferably shorter, namely 30 seconds to 2 minutes. If an HT damper is present, the goods can also be steamed at 120 ° to 135 ° C. for 30 to 120 seconds without the result of the tone-in-tone coloring being impaired.
• the dye components for the new process are the Color Index, 3rd edition 1971, as Azoic Coupling Components ("Naphthole”) and the diazoamino compounds obtained by reaction with cyanamide of the diazotized chemical compounds listed as Azoic Diazo Components ("Diazo salts”) in question.
• naphthols are preferred for the block process as the low to medium substantive products used.
• the new process can be used for any type of blended fabrics and blended fabrics made of cellulose and polyamide fibers in any mixing ratio.
• the main thing is to dye stretch cord fabrics and knitted fabrics for outerwear, such as nickies and tracksuits.
• the percent (%) designation used in the following exemplary embodiments of information about the composition of the fiber mixture or for the strength of the chemicals relates to “percent by weight”.
• Solution 2 is then stirred into the bath batch and this is filled up with water at 70 ° C. to a volume of 200 liters.
• padding is carried out at 70 ° C. and with 70% liquor absorption (based on the weight of the dry goods) the dyed goods and steams them immediately after padding, without intermediate drying, for 2 minutes at 105 ° C.
• a textile material dyed evenly brick red in the proportions of polyamide fiber and cotton is obtained. If the stretch cord is bent up along a rib, the polyamide fiber that appears shows the same color and depth as the cotton pile.
• Solution 2 is then stirred into the bath batch and this is filled up with water at 60 ° C. to a volume of 300 liters.
• the cord is padded at 60 ° C and with 70% liquor absorption (from the weight of the goods).
• the damp tissue is steamed for 4 minutes at 102 ° C.
• the development of the azo dye on the fiber is carried out by padding the material to be dyed with an 80 ° C. acid solution
• the cord is padded with 100% liquor absorption of the product weight, then subjected to an air passage of 30 seconds at room temperature and the dyeing obtained in this way is rinsed in the first box of a wide-angle washing machine with water at 70 ° C. Finally, the colored goods are soaped in the remaining boxes of the wide-width washing machine in accordance with Example 1.
• a full, clear orange dyeing of the cord is obtained with very good tone-on-tone dyeing of polyamide and cotton fibers.
• the dye material is then dried at 110 ° C for better dye utilization.
• the fabric is padded at 60 ° C and 70% liquor absorption (based on the weight of the goods) and then steamed - without drying - at 125 ° C for 30 seconds.
• the dye is developed on a wide washing machine with an aqueous bath with the addition of at 80 ° C.
• the rest of the treatment is carried out as in Example 1.
• a uniform scarlet dyeing with good tone-on-tone dyeing of cotton pile and the polyamide wound around the polyurethane threads are obtained.
• the stretch properties of the goods are not affected in any way.
• Dye 270 kg of a mixture of polyamide fiber and cotton in a ratio of 20:80. With a planned fleet intake of 70%, 190 1 block fleet + 30 1 chassis filling 220 1 fleet are required.
• a) is stirred into b) and the bath mixture is filled with water at 70 ° C. to a total volume of 220 l.
• the textile goods After padding the textile goods at 70 ° C and 70% liquor absorption (by the weight of the goods), they are steamed for 3 minutes at 102 ° C while wet and then the dye is developed with the same additives as in Example 1 and the dyed goods are post-treated.

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6061443

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Citations (5)

• 1979
  • 1979-01-26 DE DE2902977A patent/DE2902977C2/de not_active Expired
• 1980
  • 1980-01-23 DE DE8080100348T patent/DE3060310D1/de not_active Expired
  • 1980-01-23 AT AT80100348T patent/ATE930T1/de not_active IP Right Cessation
  • 1980-01-23 EP EP80100348A patent/EP0014852B1/fr not_active Expired

Patent Citations (5)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events