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 method for manufacturing lun g of reserve printing on cellulose fiber materials using so-called Naphtholkombinationen and / or reactive dyes. the generation of colored reserve effects using pigment dyes is particularly preferred.
• Non-volatile organic acids such as citric acid are usually used as reservation agents. Milk-. Tartaric acid and the like are used (cf. "Ullmanns Encyklopadie der Technische Chemie”. 4th edition. Volume 22, page 603).
• the acids mentioned can trigger a premature crosslinking reaction of the pigment binder after they have been added. which results in clogging of the rotary or planographic printing stencils and a deterioration in rub fastness.
• Suitable substituents for the phenyl radicals for example C l, C I -C 4 alkyl, C I -C 4 -alkoxy and, in particular sulfo come into question.
• the pyrazolone salts used as reservation agents are preferably not used as such, but are instead prepared in the preparation of the reserve pastes by combining the free pyrazolone sulfonic acid or carboxylic acid with preferably excess amine or ammonia, a pH value automatically setting above 7.
• heat-volatile amines in particular mono-, di- and tri-alkanolamines such as triethanolamine, isopropanolamine, diethylaminoethanol.
• Naphthol combination is understood to mean those types of development dyes which are derived from phenolic or enolic coupling components, in particular the Naphthol-AS series and stabilized diazonium salts (“fast color salts”).
• 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.
• Real red salt RC Azoic Diazo Component 10 (CI No. 37120)
• Real blue salt BB Azoic Diazo Component 20 (CI No. 37175)
• the printing paste produced in this way is now suitable for producing a wide variety of reserve effects.
• the reserve paste prepared as above is impregnated or printed onto the goods prepared with those coupling components and overprinted with diazonium salts.
• a water-insoluble azo dye is formed with the coupling component. which is anchored in the cotton capillaries.
• a water-soluble azo dye is formed by reaction of the reservation agent with the diazonium salt.
• the diammoniumphos p (or ammonium sulphate) present in the reserve paste is only added. in order to create an even more acidic pH and thus an even more favorable prerequisite for the optimal crosslinking reaction of the binder or crosslinker.
• the urea improves the running properties of the reserve pastes on the printing press: the crosslinker improves the rub fastness of the finished prints. and the silicone defoamer prevents foaming in the reserve pastes.
• the prints are soaped at the boil with 1-2 g / l soap and 1-5 g / l soda or 1-5 g / l sodium hydroxide solution. rinsed cold and dried.
• the reserve printing paste preferably contains about 1 - 30 g / 1000 g printing paste of a non-volatile organic acid, e.g. Citric acid.
• Pigment dye is visible where the reserve was printed under the diazonium salt and reactive dye.
• a) white reserve prints are obtained under stabilized diazonium compounds or diazotized real bases on cellulose materials pretreated with naphthol AS coupling components as follows: Cellulose is first padded with the coupling components or printed over the entire surface and dried. An ammoniacal (pH 8-10) printing paste containing a pyrazolonic acid is then printed in a pattern. Thereupon either a) dried, padded with a customary diazonium salt solution and dried, or b) one or more printing pastes, which contain a customary stabilized diazonium salt or diazotized real bases, are printed over the white reserve in a wet-on-wet pattern or over the entire area in the same operation ten. and dried. It is then soaped at boiling alkaline, rinsed and dried.
• the white reserved areas are visible at the points where the white reserve was printed under diazonium salt.
• White reserve prints under reactive dyes on white cellulose material are obtained by pattern-wise printing of an ammoniacal (pH 8-10) reserve printing paste.
• a) is dried. padded with a conventional reactive dye solution and dried or b) wet-on-wet in the same operation.
• One or more conventional reactive printing pastes are printed and dried as a sample or over the entire surface. Then e.g. 1-3 min. at 150-200 ° C with hot air or 1-6 min. fixed with neutral steam at 100-105 ° C, boiling alkaline soap, rinsed and dried.
• the white reserved areas are visible where the white reserve was printed under reactive dyes.
• White reserve prints under stabilized diazonium compounds or diazotized real bases and reactive dyes on cellulose materials pretreated with naphthol-AS coupling components are obtained as follows: Cellulose is first padded with the coupling components or printed over the entire surface and dried, then a reserve printing paste as described above is printed in a pattern. Then either a) is dried. padded with a conventional reactive dye or diazonium salt-containing solution and dried, or b) overprinting and drying one or more printing pastes with stabilized diazonium salts and reactive dyes in the same operation, wet-on-wet. Then, as usual, finished g e-sets is.
• Suitable cellulose-containing materials are in particular cotton, viscose or rayon.
• the dried pressure is 3 min. fixed at 150 e C with hot air, then boiling soaped in a bath containing 1-2 g / 1 soap and 1-5 g soda or the same amount of sodium hydroxide solution 38 ° Be and rinsed cold in another bath and then dried.
• the cotton fabric After drying, the cotton fabric is 5 min. fixed at 150 ° C with hot air.
• the cotton fabric is 1 min. at 180 . C fixed with hot air.
• a yellow reserve effect is obtained under a dark blue, orange and red area.
• the cotton fabric After drying, the cotton fabric is 1 min. fixed at 180 ° C with hot air.
• the cotton is 3 min. fixed at 150 * C with hot air.
• the cotton fabric is 3 min. fixed at 150 ° C with hot air.
• the dried print is soaped at the boil in a bath containing 1-2 g / 1 soap and 1-5 g / 1 soda or the same amount of 32.5% sodium hydroxide solution, and rinsed cold in a further bath and then dried.
• a white reserve print is obtained under a brown area.
• the cotton fabric After drying, the cotton fabric is 1 min. fixed at 180 ° C with hot air. It is then boiled in a bath with soap (1-2 g / l soap) (neutral) and rinsed cold in another bath and then dried.
• soap 1-2 g / l soap
• a white reserve effect is obtained under a dark blue area.
• a cotton fabric primed with 10-20 g of Naphthol AS-G is printed with a white reserve paste of the following composition on the rotary film printing machine.
• the cotton fabric is 3 min. fixed at 150 ° C with hot air.

Landscapes

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

Applications Claiming Priority (2)

Publications (3)

Family

ID=6240484

Family Applications (1)

Country Status (3)

Citations (1)

• 1984
  • 1984-07-12 DE DE19843425703 patent/DE3425703A1/de not_active Withdrawn
• 1985
  • 1985-03-25 DE DE8585103508T patent/DE3568602D1/de not_active Expired
  • 1985-03-25 EP EP85103508A patent/EP0167711B1/fr not_active Expired
  • 1985-07-11 OA OA58638A patent/OA08061A/fr unknown

Patent Citations (1)

Also Published As

Similar Documents

Legal Events