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

Definitions

• the present invention relates to a method for level dyeing of knitted fabrics made of cellulose fibers in tubular form with water-insoluble azo dyes produced on the fiber in the reel runner.
• the present invention was therefore based on the problem of designing improved dyeing techniques in order to be able to create level dyeings with azo developing dyes on knitted tubular fabrics in the reel runner.
• This object is achieved in that the tubing in the reel runner, before priming with the coupling component, with a fiber-affine, cationic compound based on a condensation product of dicyandiamide and formaldehyde, and a combination wetting agent containing sodium alkyl sulfonate and the condensation product from 1 mol of isotridecanol with 8 moles of ethylene oxide pretreated, then rinsed with water and finally the dyeing with the components for forming the azo dyes is carried out in the usual way.
• the first product is particularly effective when it is applied at 60 ° C
• the second can be used at temperatures from room temperature (20 ° C) to 60 ° C.
• the pretreatment according to the invention alone makes it possible, in the case of a large number of combinations of coupling component and diazo component, to obtain level dyeings on the tubular knitted fabrics which are difficult to dye regardless.
• the solution thus prepared is made into a mixture 800 cm 3 of water at 20 ° C, 3 g of dispersant based on a naphthalenesulfonic acid-formaldehyde condensate and 5.3 cm 3 of sodium hydroxide solution (32.5%)
• the pretreated cotton jersey After adding 20 g of sodium chloride, the pretreated cotton jersey is primed in 200 cm 3 of this liquor for 30 minutes at 20 ° C, drained and then 5 minutes in 200 cm 3 of an aqueous liquor containing 1 cm / l sodium hydroxide solution (32.5 %) and 40 g / 1 table salt at 20 ° C.
• 80 kg of a cotton interlock product are wetted with water in a reel runner at 30 ° C and in a liquor ratio of 1:20. Then 10 g / l of a 60% aqueous solution of the condensation product of 1 mol of dicyandiamide, 2 mol of formaldehyde and 2 mol of ammonium chloride are added to this liquor. After 5 minutes of run time is slowly even 5 g / l of a 25% aqueous surfactant combination based on A lkylsulfonat with 10% proportion add to the condensation product of 1 mol of isotridecanol with 8 mol of ethylene oxide and let the goods run through the bath for a further 15 minutes.
• the goods are primed for 30 minutes at 20 ° C.
• the intermediate rinsing is carried out in the aqueous bath with the addition of
• a level black color is obtained on the textile without marking the creases.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Coloring (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6178147

Family Applications (1)

Country Status (2)

Citations (3)

• 1982
  • 1982-11-13 DE DE19823242155 patent/DE3242155A1/de not_active Withdrawn
• 1983
  • 1983-11-09 EP EP83111166A patent/EP0109609A1/fr not_active Withdrawn

Patent Citations (3)

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