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 explained below relates to the uniform dyeing of voluminous fabrics, e.g. Cord, velvet, terry cloth or pile goods, made of cellulose fibers, especially cotton, with water-insoluble azo dyes produced on the fiber according to a continuous or semi-continuous method, the priming by pre-padding with a coupling component under alkaline conditions and the subsequent dye development wet-on-wet by padding with a diazo component in the presence of acid or acid-providing substances.
• voluminous fabrics e.g. Cord, velvet, terry cloth or pile goods
• cellulose fibers especially cotton
• water-insoluble azo dyes produced on the fiber according to a continuous or semi-continuous method
• the priming by pre-padding with a coupling component under alkaline conditions and the subsequent dye development wet-on-wet by padding with a diazo component in the presence of acid or acid-providing substances.
• the coupling component and the diazo component are generally applied from separate baths, with intermediate drying taking place between the two blocks. This process has been known for a long time and is carried out worldwide.
• the penetration of the already wet goods during the second padding with the solution of the diazo component does not take place quickly enough, ie during the creditable diving time.
• sufficient located after squeezing subsequent to the second block operation no longer developing liquor with the therein contained, for dye formation necessary diazonium compounds and A lkalibindeschn in the goods, to the complete penetration of the tissue, and therefore the complete disengagement of the coupling component ensure dye.
• the object of the present invention was therefore to remedy the shortcomings described above in relation to the two-bath dyeing of voluminous textile material with the components for forming water-insoluble azo dyes on the fiber.
• To carry out a wet-on-wet dyeing it was particularly important to achieve a sufficiently high additional liquor absorption of the moist primer at the second padding in order to enable an adequate liquor exchange and to keep the concentration conditions in the padding liquor (development liquor) within normal limits to keep.
• the polymers of acrylic acid amide used or their copolymers with the other monomers mentioned above under a) to e) have a molecular weight of 1.0 ⁇ 10 6 to 2.5.10 6 , preferably of 1.5 ⁇ 10 6 to 2, 0 ⁇ 10 6 .
• liquor absorption values of an additional 70 to 90% are achieved on the textiles, in addition to the fleet already on the textile web from the primer block, which is what The end result is a total liquor intake of 140 to 170% by weight with both blocks.
• the necessary amount of the diazonium compound can be dissolved and the alkali binder concentration is within the usual limits.
• the wetting agent ensures rapid distribution of the second padding liquor in the material to be dyed, so that there is uniform dye formation on the fiber.
• auxiliaries according to the invention are omitted in the second block with the diazo component, then no additional liquor absorption is obtained - or with the foulard set to the weakest pressure - maximum 20% by weight of additional liquor absorption. In this small amount of liquor, however, a 4 to 5 times higher concentration of the diazonium compound and the alkali binder would have to be dissolved than under normal conditions (with intermediate drying).
• Suitable textile materials for the process according to the invention are voluminous fabrics, such as cord, velvet, terry cloth and pile fabric, made of cellulose fibers, in particular cotton, for which levelness is particularly important.
• the mentioned dyed material can even be used as a raw chair (advantageous for very full or covered shades).
• Some of the polymerization products of acrylic acid amide used according to the invention are known (DE-OS 2 542 051, CASSELLA AKTIENGESELLSCHAFT), but they are used for a completely different purpose, namely to suppress the "frosting effect" when dyeing polyester fibers with disperse dyes.
• the following examples are intended to explain the present invention, but not to restrict it in any way - also with regard to the wetting agents to be used.
• the percentages evident in the exemplary embodiments mean percentages by weight; in the case of wet treatment of textiles, such percentages relating to liquor absorption relate to the weight of the dry goods.
• a cotton cordware is first padded on the foulard at 70% liquor absorption with an aqueous solution containing the following substances:
• the primer thus prepared is padded wet-on-wet on the padder with an aqueous development liquor of:
• Cotton cord should be dyed continuously. To do this, block the textile material on the foulard with 80% liquor absorption using an aqueous solution of:
• this primer is padded wet-on-wet with a developing liquor containing per liter of water:
• a raw cotton cord should be dyed continuously with development dyes. To do this, block the textile material on the foulard with a 70% liquor absorption with an aqueous liquor which has the following substances:

Applications Claiming Priority (2)

Publications (2)

Family

ID=6108449

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (3)

Citations (9)

Family Cites Families (4)

• 1980
  • 1980-07-30 DE DE19803028845 patent/DE3028845A1/de not_active Withdrawn
• 1981
  • 1981-07-24 EP EP81105853A patent/EP0045458B1/fr not_active Expired
  • 1981-07-24 DE DE8181105853T patent/DE3167602D1/de not_active Expired
  • 1981-07-29 JP JP56117877A patent/JPS5756588A/ja active Pending
• 1982
  • 1982-06-16 US US06/388,932 patent/US4414000A/en not_active Expired - Fee Related

Patent Citations (9)

Non-Patent Citations (2)

Also Published As

Similar Documents

Legal Events