DE670961C - Process for printing with Kuepen and sulfur dyes on fabrics - Google Patents

Description

Process for printing with vat and sulfur dyes on fabrics It has been found that the printing results can be obtained with vat or sulfur dyes can improve through the use of alkylaminobenzenecarboxylic acids.

The Alkylaminobenzolcarb: onsäuren, z. B. i-mono- or -dimethylamino- or i-mono- or diethylaminobenzene-a-, -3- or -q.-carboxylic acids and their core substitution products, or salts of these compounds, e.g. B. the sodium, potassium, ammonium salts. Or Salts with organic bases, such as with ethanolamine, can be added to the printing paste or preferably already the dyes during or after their preparation, optionally in conjunction with heavy metal salts, such as tin, iron or copper salts, are added.

The carbon saunas can also be used for printing preparations, the vat dyes contained in the form of permanent or inconsistent forms of reduction, can be added.

The new preparations can also contain water-soluble alcohols such as glycerine, Ethylene glycol, thiodiglycol, and further hydrotropic agents such as urea, i-benzylaminob: enzene-q.-sulfonic acid or Salts of other aromatic carbonic acids, also reduction catalysts, such as anthraquinone, Oxyanthraquinones or their salve, also reducing agents such as sodium hydrosulfite, and finally alkalis, such as potassium hydroxide, l # Za: trium hydroxide, sodium carbonate, Contains potassium carbonate, ammonium hydroxide, magnesium hydroxide.

The printing pastes which contain alkylaminobenzenecarboxylic acids are distinguished from known printing pastes with a content of pressure-improving agents by their excellent yield. This abundance is particularly evident when powdery dye preparations are used to produce the printing pastes. This is because if dye preparations obtained above are dried and ground to a powder, these powders can easily be stirred into the print thickener. Printing pastes prepared in this way are at least as extensive as the printing pastes obtainable in the customary manner with the aid of carefully prepared dye pastes containing alkylaminobenzolecarboxylic acids. B.eispel i i2o parts filter pressed material; Containing 7.5 parts of Ciban, onblau GCD, (S chu 1 tz, Dyestofftahellen, 7th edition, No. I234), are mixed with 50 parts of a 500% sulfitoellulose waste liquor, 33 parts of ice, i-diethylamino, enzene-t-carboxylic acid potassium and 4 parts of glucose mixed, then in the usual way, for. B. in a stream of air, dried and then -fine ground. A powder containing 28.7% of dyestuff is obtained which can readily be used for the production of printing pastes. These produce blue prints of very good yield and clarity.

Other carbon acids are used in a similar manner, e.g. B. i-dimethylaminobenzene-4-carb, onic acid. You can also add other known ones to the preparation; incorporate beneficial additives, such as urea, i-diethylaminabenzene - 3 - sulfonic acid, i - benzylaminob, enzene-4-sulfonic acid, propylated or butylated naphthalene sulfonic acid, benzene-i-sulfonic acid-2-carboxylic acid ester, Sulforicinate, anthraquinone, oxyanthraquinone, hydrosulfite or sulfoxylate. Man but can also produce preparations which, in addition to the dye and the alkylaminobenzene carboxylic acids contains no further admixtures.

Instead of cibanon blue GCD- you can use other @ vat dyes, z. B. Cibanon blue 3G (Schultz, a, a: 0., No. I279), Cibablau 2B (Schultz, a. A. Cit., No. i234), cibanon violet 2 RB (S c h u l t z, op. Cit., LVr. I265).

Example 2 In 6o parts of a thickening consisting of 100 parts of wheat starch, 170 parts of water, 25o parts of tragacanth 6o: 100 parts, zoo parts of British gum, 17o parts of potassium carbonate and 100 parts of glycerine, 8 parts of the dye powder, which, as described in Example i , has been prepared, sprinkled in, stirred well and then I parts of sodium formaldehyde sulfoxylate solution i: i and 18 parts of water are added.

After printing and drying, steaming takes place in the Matherplatt; washed and soaped at the boil. One obtains so; as indicated in the previous example, very valuable Prints.

Claims (1)

PATENT CLAIMS: i. Process for printing with vat and sulfur dyes on textile fabrics, e unsigned through the use of g'ke printing pastes with a Content of alkylamino, enzolecarboxylic acids. Ä. Method according to claim i, characterized characterized in that printing pastes are used which are obtained by mixing dye preparations, which contain alkylaminobenzenecarboxylic acids, available with the printing thickeners are.