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
  • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
  • D06P5/12—Reserving parts of the material before dyeing or printing ; Locally decreasing dye affinity by chemical means

Definitions

• the invention relates to a new method for producing reserve prints on fiber materials consisting of cellulose or containing cellulose.
• the new printing process is particularly suitable for Rouleaux printing, rotary film printing and flat film printing.
• novel process is characterized in that fiber materials printed with a phenolic or enolic coupling component or with their alkali salt paste are printed with an aqueous paste which contains one or more reactive dyes and an amine-based reservation agent which prevents the formation of an insoluble azo dye, and then with one or several aqueous printing pastes containing one or more stabilized diazonium salts, overprinted in a pattern or over-inked with aqueous diazonium salt solutions, the soluble constituents are washed out and dried and fixed by methods known per se.
• a variant of the method according to the invention is characterized in that the cotton fabric to be printed is first prepared over the entire area with a naphthol or enol according to a known method or is printed in a pattern by printing on naphtholate or enolate printing paste.
• An aqueous printing paste is applied to this dried naphthol impregnation using the printing process customary in textile printing, which contains the reserve and a reactive dye or Contains reserve and a mixture of several reactive dyes.
• This reserve printing paste with or without intermediate drying, but preferably wet-on-wet, a printing paste containing a fast dye salt is overprinted and fixed after drying the reactive dye by known methods. This is followed by an aqueous alkaline aftertreatment, as is customary in base printing. Color effects are thus obtained under overprinted, flat-colored patterns.
• Another variant of the method according to the invention is designed in such a way that the printed-on reserve pastes are first dried with the reactive dye, the reactive dyes are fixed by a steaming process and then the goods are dyed on a padder or by another suitable device with an aqueous solution of a fast dye salt. In this case you get colorful reserve effects under a plain colored fund.
• Suitable cellulose-containing fiber materials are in particular those which contain little polyacrylonitrile and / or little polyester mixed with cotton.
• Fabrics made of pure cotton are very particularly preferably suitable for the process according to the invention.
• Phenolic coupling components are to be understood in particular as naphthols and hydroxycarbazoles.
• Possible reactive dyes are those which have reactive groups which have one or more reactive groups or removable substituents which, when the dyes are applied to cellulose materials, are able to react with the hydroxyl groups of the cellulose in the presence of acid-binding agents and, if appropriate, to form covalent bonds .
• a large number of such fiber-reactive groups are known from the literature.
• Suitable reactive groups which contain at least one detachable substituent attached to a heterocyclic or to an aliphatic radical include those which contain at least one reactive substituent attached to a 5- or 6-membered heterocyclic ring, such as a monazine or diazine ring.
• Triazine for example pyridine, pyrimidine, pyridazine, pyrazine, thiazine, oxazine or asymmetrical or symmetrical triazine ring, or to such a ring system which has one or more fused aromatic rings, such as a quinoline or phthalazine , Chinnoline, quinazoline, quinoxaline, acridine, phenazine and phenanthridine ring system; the 5- or 6-membered heterocyclic rings which have at least one reactive substituent are accordingly preferably those which contain one or more nitrogen atoms and can contain 5 or preferably 6-membered carbocyclic rings fused on.
• Suitable phenolic or enolic coupling components for the process according to the invention are preferably those of the Naphthol-AS series.
• Cyclic amines especially pyrazolones, e.g. the sodium salt of 1- (3-sulfophenyl) -3-methyl-pyrazolone- (5) or the disodium salt of 1- (4-sulfophenyl) -5-pyrazolone-3-carboxylic acid.
• Stabilized diazonium salts include, in particular, fast color salts which contain zinc chloride, aromatic sulfonic acids or tetrafluoroboric acid as stabilizers.
• the stabilized diazonium salts were either used as aqueous pastes or converted into aqueous diazonium salt solutions before the coupling reaction.
• the paste containing the reservation agent and the reactive dye also contains alkali (in particular soda or sodium hydroxide solution) and optionally thickeners (e.g. starch ether thickening).
• alkali in particular soda or sodium hydroxide solution
• optionally thickeners e.g. starch ether thickening
• the paste containing the stabilized diazonium salt also contains acid (primarily acetic acid), thickeners and, if necessary, other auxiliary substances such as defoamers (e.g. isooctyl alcohol or silicone oils).
• acid primarily acetic acid
• thickeners e.g. isooctyl alcohol or silicone oils.
• defoamers e.g. isooctyl alcohol or silicone oils
• the pressure is generally dried at approx. 90-120 ° C, especially at approx. 100 ° C.
• the excess phenolic or enolic coupling component is removed with alkali, in particular with aqueous alkali hydroxide.
• the reactive dye is fixed with alkali by methods known per se.
• the reactive dye is then subjected to a one-stage steaming process or a two-phase development, e.g. Alkali block damping process or alkali shock process or cold residence process, fixed on the cellulose material and then the textile printed and treated in this way is subjected to a washing process to remove the excess naphthol. You get attractive, patterned real prints.
• a one-stage steaming process or a two-phase development e.g. Alkali block damping process or alkali shock process or cold residence process
• a cotton fabric primed with a solution of 10-20 g Napthol AS is printed with a printing paste of the following composition on the rotary film printing machine in small-area patterns, for example dots or sheet contours:
• This printing paste has the following composition:
• the dried pressure is steamed for 6 minutes at 100-102 ° C in the continuous steamer, then rinsed in cold water and in a further bath containing 1-5 g soda or 1-5 g sodium hydroxide solution 38 ° Be / 1 to remove the Excess naphthol after-treated at 90-100 ° C.
• a second alkaline aftertreatment of this kind can have an advantageous effect on the cleanliness of the fund. It is then rinsed cold and dried. Gold-yellow reserve prints are obtained under a brown surface.
• a 3-color sample is printed on the rotary film printing machine on Naphthol AS primed cotton fabric.
• wet-on-wet is printed with a third stencil in the attack with the following composition:
• a cotton fabric primed with Naphthol AS-G is printed with a printing paste of the following composition:
• a printing paste of the following composition is overprinted wet-on-wet with another stencil:
• the printed goods are placed on the padder with a fleet of the following composition: impregnated at room temperature, docked and approx. Lingered 4 hours. Then it is washed and dried as described in Example 1.
• the printing pastes are successively applied on a Rouleaux printing machine on naphthol-A primed goods printed on and as the 4th printing ink the following printing paste overprinted over the entire surface:
• the printed goods are steamed for 6 minutes at 102 ° C. in a hanging loop damper and then subjected to the aftertreatment described in Example 1.
• a printing paste consisting of is printed on a product prepared with Naphthol AS using a rotary stencil in the form of dots.
• a 2-color surface pattern is overprinted wet-on-wet in the holdup.
• the goods After drying, the goods are steamed for 3-6 minutes at 102 ° C and, as listed in Example 1, subjected to a post-wash.

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

Applications Claiming Priority (2)

Publications (3)

Family

ID=6128372

Family Applications (1)

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Cited By (1)

Citations (3)

• 1981
  • 1981-03-26 DE DE19813111966 patent/DE3111966A1/de not_active Withdrawn
• 1982
  • 1982-03-15 DE DE8282102077T patent/DE3271859D1/de not_active Expired
  • 1982-03-15 EP EP82102077A patent/EP0062183B1/fr not_active Expired
  • 1982-03-24 OA OA57642A patent/OA07047A/fr unknown
  • 1982-03-25 ZA ZA822029A patent/ZA822029B/xx unknown

Patent Citations (3)

Non-Patent Citations (3)

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