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
  • 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
• • 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 invention described below relates to the uniform dyeing of tubular chair knitted fabrics made of cellulose fibers, in particular BaumMolle, with water-insoluble azo dyes produced on the fiber according to a semi-continuous method, with a coupling component being applied under alkaline conditions in accordance with the pull-out dyeing technique, the fabric tube then partially dewatered and then the dye development is carried out wet-on-wet by padding with a diazo component in the presence of acid or acid-providing substances.
• the object of the present invention was therefore to eliminate the disadvantages described above in the two-bath dyeing of round chair knitted fabrics in tubular form, wet-on-wet with the components for forming water-insoluble azo dyes on the fiber, in particular with regard to the insufficient liquor absorption in the course of the padding operation with the development liquor , ie With a blockage of wet goods which had already been primed with the coupling component, so much liquor had to be applied that the amount of diazonium compound necessary for dye formation can be dissolved therein and that the alkali binder concentration does not become too high during the coupling. In addition, it was important to ensure a rapid penetration of the knitted fabric with the block fleet mentioned, which is necessary to make the coupling conditions in the goods more uniform.
• This object is achieved according to the invention by adding 15 to 60 g / l of the polymer or mixed polymer of acrylic acid amide in the form of a 2 to 8, preferably 4 to 5% by weight, aqueous setting to the acidic development liquor with the couplable diazo component, and 2 up to 20 g / 1 of an anionic or nonionic wetting agent.
• polymers of acrylic acid amide or its copolymers with other monomers mentioned above under a) to e) have a molecular weight of 1.0 ⁇ 10 6 to 2,5.10 6, preferably 6 to 1,5.10 2, 0th 10 6 , on.
• fleet intake values of an additional 50 to 130% are achieved on the tubular textiles, i.e. in the end a total fleet intake of 120 to 200% by weight, if there is already about 70% by weight of moisture on the treated knitted fabric from the primer (in the pull-out process).
• the necessary amount of the diazonium compound can be dissolved and the alkali binder concentration is within the usual limits.
• the wetting agent ensures a rapid distribution of the padding liquor in the knitted fabric, so that there is even dye formation on the fiber.
• the liquor absorption in the (second) padding under otherwise identical conditions can be increased by about 70% by weight compared to a padding liquor without these additives, and that even on goods that are already wet An increase in the liquor absorption can be achieved, which only allows the required amount of diazo component to be applied to the primer.
• the increased absorption of the liquor also means that irregularities which the textile material exhibits immediately after leaving the foulard are compensated for by diffusion, so that there is no marking of the squeezed edges of the knitted tube. Another deficiency that has occurred in previous attempts is also eliminated.
• round chair knitted fabrics made of cellulose fibers, in particular cotton are suitable for the process according to the invention, which are used in tubular form, in which levelness is particularly important.
• Such knitted fabrics even raw chair goods can be used (advantageous for very full or covered shades).
• the claimed method can of course also be carried out with sliced goods.
• the chemical compounds which are customary for producing development dyes and are listed in the Color Index, 3rd edition 1971 as “Azoic Coupling Component” (coupling component) and as “Azoic Diazo Component” (diazo component) are suitable.
• the tubular textile goods are primed as a strand in a reel runner or jet dyeing system with a coupling component made from an alkaline liquor.
• the primer thus produced is removed from the reel runner or the dyeing jet, the tubing strand is dewatered to about 70 to 90% by weight of liquor residue in the goods and the tubing is then laid out for the block operation.
• the pretreated goods are padded in the usual manner on the wet-in-wet foulard in the presence of alkali binders (acid or acid-providing substances) with the development liquor containing a couplable diazo component, this pad liquor being combined with the combination of acrylic acid amide polymer and wetting agent according to the invention in the stated amounts adds.
• alkali binders acid or acid-providing substances
• the required amounts of diazo component and alkali binder are calculated - as in the case of pad dyeing of intermediate-dried goods - with the ratios specified by the manufacturers of the diazo component in the application instructions, taking into account the additional liquor absorption.
• the following examples are not intended to represent any restriction, particularly as regards the type of wetting agent used, but are only intended to illustrate the present invention.
• the percentages evident in the exemplary embodiments mean percentages by weight; in the case of wet treatment of textiles, such percentages with regard to liquor absorption or residual moisture content relate to the weight of the dry goods.
• the textile goods are primed with this liquor for 30 minutes at 30 to 35 ° C.
• the primed goods are now removed from the reel runner and squeezed onto 70% remaining liquor; then the hose is laid over to block it.
• the dye is then developed without intermediate drying by treating the primed textile material on a padder by means of two dips and squeezing with an aqueous development liquor containing:
• the dye coupling is completed by passing the textile material through hot water at 80 ° C.
• For post-treatment of the dyeing which is carried out as usual, take the fabric hose back onto the reel runner.
• the textile is primed with this liquor at 35 ° C for 30 minutes, then take the hose from the jet dyeing machine, squeeze it into 90% of the remaining liquor and spread it out to fill.
• the wet, primed fabric hose for developing the dye is then further treated on a padder by dipping and squeezing once using an aqueous liquor which is composed as follows:
• the textile material treated in this way is dewatered to 80% residual liquor and then the dye is developed on a wet-in-wet foulard by means of two dips and squeezing off the wide tube with a padding liquor of the composition below:
• the additional liquor absorption when padding over the hose is 120%.
• a hot water passage of the dyed goods is given at 80 ° C to complete the coupling and the dyeing is treated as usual on the primer unit.
• a well-dyed, level, brilliant red fine cotton rib fabric is obtained.

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

Applications Claiming Priority (2)

Publications (2)

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ID=6108447

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (3)

Citations (8)

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• 1980
  • 1980-07-30 DE DE19803028843 patent/DE3028843A1/de not_active Withdrawn
• 1981
  • 1981-07-24 DE DE8181105851T patent/DE3166957D1/de not_active Expired
  • 1981-07-24 EP EP81105851A patent/EP0045068B1/fr not_active Expired
  • 1981-07-29 JP JP56117875A patent/JPS5751881A/ja active Pending
• 1982
  • 1982-06-24 US US06/391,858 patent/US4433976A/en not_active Expired - Fee Related

Patent Citations (8)

Non-Patent Citations (2)

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