DE513526C - Process for the production of multicolor printing effects by means of ester salts of Kuepen dyes and ice colors - Google Patents

Description

Process for the production of multicolor printing effects by means of ester salts of vat dyes and ice colors The present invention relates to a new one Process for producing multicolor printing effects using vat dyes and Ice colors and consists in that one on those with alkaline solutions of 2 # 3-Oxynaphthoesäurearyliden impregnated goods aromatic diazo compounds and vat dye solutions in Form of ester salts of their leuco compounds to which alkali nitrite is added, printed next to each other, the development of the vat dyes on the dried goods caused by an acid passage and soapy after rinsing in the usual way, where appropriate after the acid passage with a hot, dilute alkaline Solution is treated.

This way of working ensures that the ice color effects do not occur tarnished, as in the previously used processes that required steaming, occurred, and that perfect white is retained in the unprinted areas.

Particularly favorable results with regard to the vividness of the color tones and the purity of the white soil are achieved if one of the ester salts of the Leuco compounds from vat dyes produced in printing inks in small quantities substances with a reducing effect, such as sodium formaldehyde hydrosulphite, glucose, etc., clogs.

EXAMPLE i The goods are impregnated with a solution which contains 15 g of 2 # 3-oxynaphthoylaniline, 30 cc of Turkish red oil, 22 cc of sodium hydroxide solution and after drying, a printing ink for orange is printed next to a printing ink for violet. Then. is dried, developed with 25 ccm of sulfuric acid 66 ° B6 per liter at 30 ° C for 15 seconds, rinsed and soaped at the boil with 5 g of soap per liter for 2 minutes.

A two-tone pattern in orange and purple is obtained on pure White. Example 2 The goods are impregnated with a solution; which in liter contains 15 g 2,3-oxynaphthoyl-o-toluidine, 3o ccm turkish red oil, 22 ccm caustic soda 34 ° Be.

After drying, a printing ink for red becomes next to a printing ink imprinted for blue.

Printing ink for red, which is made from the diazo solution of 12 g 4-chloro-2-toluidine chlorohydrate, 423 g water, 16 g hydrochloric acid 2o ° B6, igg sodium nitrite solution 1: 2 with 5oo g starch carrier thickening, 24 g of baking soda i: i 1000 g. Printing color for blue 40 g ester salt of tetrabromine indigo, 445 g water, 5o g starch thickening, 15 g sodium nitrite i ooo g. The completion takes place as in example i. You get red and blue effects on pure white.

Example 3 The goods are impregnated with a solution which contains -5 per liter g 2.3-oxynaphthoyl-m-nitroaniline, 10 ccm Türlischr otöl, 8 ccm caustic soda 34 ° Be.

After drying, a printing ink for Bordeaux becomes next to a printing ink printed for green.

Printing ink for Bordeaux 10 g zinc chloride double salt of the diazo binding of 4-nitro-2-anisidine, 485 g water, 500 g starch carrier thickening 1000 g. Printing color for green 6o g of the ester salt obtained by oxidation Dibenzanthrone and subsequent Ethylation obtained dye; 42o g water, 500 g starch thickener, 20 g sodium nitrite zoo g. It is then dried, developed with a 5 cc sulfuric acid 66 ° B6 per liter at 60 ° C, through a bath of: sodium hydroxide solution 1 ° B6 taken at 60 ° C; rinsed and soaped at the boil for 2 minutes with 5 g of soap per liter.

A two-tone pattern in bordeaux and green is obtained on pure White. Example 4 The goods are soaked in a solution which contains per liter: 15 g of 2 - 3-oxynaphthoylaniline, 3o ccm of turkey meal oil, 22 ccm of caustic soda 34 ° Be.

After drying, a printing ink for red becomes next to a printing ink Imprinted for blue.

Printing ink for red, which is made from the diazo solution of i 4, og p-nitroaniline, 35, above water, 35.0 g of hydrochloric acid 20 ° B6; 7.5 g sodium triitrite 500, above with 430.0 g starch thickener, 70; above sodium acetate i: i IOOo, O g. Printing color for blue 40.0 g ester salt of tetrabron indigo, 437.5 g water, 7.5 g sodium formaldehyde hydrosulfite, 5oo, above starch carrier thickening, i 5, ag sodium nitrite 1000.0 g. Then it is dried, developed with 30 cc sulfuric acid 66 ° B6 and 10 cc formic acid go% per liter for 15 seconds at 60 ° C, taken through a bath of sodium hydroxide solution 10 ° B6 at 60 °, rinsed and with 5 g of soap and 0.5 g soda per liter soaped at the boil for 2 minutes.

A two-tone pattern in red and blue on pure white is obtained.

Claims (1)

PATENT CLAIMS: 'i. .Process for generating multicolor printing effects by means of ester salts of vat dyes and ice colors, characterized in that that one impregnated with alkaline solutions of 2 # 3-Oxynaphthoesäurearyliden Aromatic diazoverbin boys and vat dye solutions were in side by side In the form of ester salts of their leukoverbin boys with the addition of .Alkalinitrite imprinted, on of the dried goods the vat dyes developed through acid passage and after soaps the rinsing in the usual way, optionally after the acid passage with treated with a hot, dilute alkaline solution. a. Method according to claim t, characterized in that the prepared from the vat dye solutions Printing inks small amounts of reducing substances, such as sodium formaldehyde hydrosulphite, Glucose, etc., adds.