DE641874C - Process for the production of ice colors in stuff printing - Google Patents

Description

Process for the production of ice colors in stuff printing It was found that you can produce ice colors in stuff printing, if you have mixtures of alkali salts from. azo components suitable for the production of azo dyes on the fiber, Nitrite and aldehyde imino compounds of the general formula R ₧ N = CH ₧ R'-x, in which R is a radical of the iso- or heterocyclic series, R 'is such. the aliphatic, iso or heterocyclic series, and x for one or more solubilizing Groups such as B. S 03 H or C O O H, with the usual in the print shop Adding additives to the fiber and treating with acids or acid-releasing agents Substances or acid salts develop the dye on the fiber.

The present method differs from known similar methods, e.g. B. that of British patent specification 374 497, preferably with regard to the copiousness of the prints, a superiority and thus represents an enrichment of the technology. Example I A printing paste consisting of 15 g of I - (2 ', 3 - oxynaphthoylamino) -2-methylbenzene, 26 g of I - (2'- sulfobenzylideneamino-4-benzoylamino-2, 5 - diethoxybenzene, 2o g ethylene thiodiglycol, 20 g caustic soda 34 ° Bé,. 6 g sodium nitrite, 413 g water, 5oo g starch carrier thickening, 1000 g, is printed on cotton piece goods and dried. Then a solution containing 50 g of formic acid 85 percent per liter is splashed and immediately dried on a cylinder drying machine. It is then rinsed and soaped at the boil. Greenish blue prints are obtained. If, in this example, instead of the benzylidene compound mentioned, the I, '- (2'-sulfobenzylideneamino) -2-methyl-4-chlorobenzene; this is how you get red prints.

I- (3'-sulfobenzylideneamino) -2-methyl-4-chl9rb, enzene can also be used with the same successes can be used. The shades of the thus obtained Prints are with 2 ', 3'-oxynaphthoylaminobenzene scarlet, I- (2', 3'-oxynaphthoylamino) -4-methoxy-2-methylbenzene bluish red, I-oxy-4-benzoylnaphthalene red, 4, 4'-bis (-acetoacetylamino) - 3,3 ' - dimethyldiphenyl yellow. Example 2 3 6.7 parts by weight 4,4'- bis (-acetoacetyl amino) -3, 3'-dimethyldiphenyl, 45, a parts by weight 4- (2'-sulfobenzylideneamino) azobenzene, I8.3 parts by weight of sodium nitrite are thoroughly ground to a dry powder.

A printing paste consisting of 545 g g of the above powder, 2o g ethylene thiodiglycol, 3o g caustic soda 34 ° B6, 3955 g water, 5oo g starch carrier thickening, Iooo g, is printed on piece of cotton, dried and developed with a solution of 30 cc acetic acid 5% per liter at the boiling point. This is followed by rinsing and soaping. Reddish-tinged yellow prints are obtained.

If one uses in this example in place of the 4,4'-bis (-acetoacetylamino) -3, 3'-dimethyldiphenyls the I- (2'-oxycarbazole-3'-carboylamino) -4-chlorobenzene and developed in the same manner using formic acid, brown prints are obtained.

In the list below are a number of components listed which can be used in the process as well as the color shades of the prints available from it.

I- (3'-sulfobenzylideneamino) - 3 - chlorobenzene and I- (2 ', 3'-oxynaphthoylamino) - 2 - methyl-4 chlorobenzene yellowish red, I- (2'-sulfobenamino) -4-nitrobenzene and I- (2'-oxyarbazole-3'-carboylamino) -4-chlorobenzene brown, 3 - (3'-sulfobenzylideneamino) carbazole and I - (2'-oxycarbazole-3'-carboylamino) - 4 - chlorobenzene dark brown, 4,4'-bis (2'-sulfobenzylideneamino) -3, 3 '-dimethoxydiphenyl and I - (2', 5'-dichlorophenyl) -3-methyl-5-pyrazolone orange brown.

Claims (1)

PATRNT CLAIM: Process for the production of ice colors in stuff printing, characterized in that mixtures of alkali salts of for the preparation of Azo dyes on the fiber suitable azo components, nitrite and aldehyde imino compounds of the general formula R ₧ N = CH ₧ R'-x, where R is a radical of the iso- or heterocyclic series, R 'one of the aliphatic, iso- or heterocyclic series Series mean and x for one or more solubilizing groups, such as. B. S. 03 H or C O O H, is written on the fiber with the additives customary in printing brings and the dye by treatment with acids or acid-releasing substances or also, acidic salts developed on the fiber.