DE568426C - Process for etching colorations made with Kuepen or sulfur dyes - Google Patents

Description

Process for etching dyeings made with vat or sulfur dyes. Quaternary ammonium bases or their sulfonic acids play a role as auxiliaries for the etching of dyeings (cf. patents 184,381, 229 0 23, 23i 543, 235 879, 235880). Although the known and established compounds of this type have considerably improved the etching technique, there are cases where complete success is not achieved, because the etching effect is unsatisfactory with some vat dyeings.

It has now been shown, surprisingly, that the application of hitherto unknown dialkylphenyl-i-naphthomethylammonium compounds including their substitution products, d. H. z. B. of the ammonium hydroxides, the ammonium chlorides or the corresponding sulfonic acids, individually or together with other caustic agents eliminates the disadvantage mentioned and allows staining to be etched that was previously considered were not considered to be etchable. The etchants can be in alkaline, neutral or acidic Apply media.

The compounds are obtained from the il-chloro-i-methylnaphthalene, which has become easily accessible by the process of patent 5o8 89o, by reaction with a dialkylarylamine of the benzene series and, if appropriate, subsequent sulfonation. Example i Those with a vat dye, e.g. B. Indanthrendarkblau BO, which is difficult to etch (Schultz, Dye Tables, 5th edition, No. 763), colored goods are printed with an etch of the following composition: 25o g Britishgum i: i, 340 g tragacanth 65: iooo, 8o g glycerine, 150 - 50 g kongalit C (see Beilstein, Manual d. organ. Chem., 4th ed., Vol. I, p. 577), J75 - 250 g sulfonated dimethylphenyl i - naphthomethylammonium hydroxide, 80-30g potassium carbonate or the sufficient amount of sodium hydroxide, -0- 40g triethanolamine IOOo g. After the etching has been applied and drying, steaming is carried out for 2 to 4 minutes in the Mather-Platt or for a shorter or longer time in a round steamer, then treated in boiling hot fume cupboards of 5 to: 20 g of water glass, soda or caustic soda, followed by about 1/4-hour soap and washed in water. Example e The ground colored with indigo or another vat dye is printed with the following etch: Zoo g Britishgum i: i, 25o g tragacanth 65: -100o, 8o g glycerine, o - 100 g zinc white dough i: i ,. __ 175-2509 sulfonated dimethylphenyl 1 - naphthomethylammonium hydroxide, 8o 30 g of potassium carbonate or corresponds sufficient amount of sodium hydroxide, 40 g triethanolamine 1000 g. The further treatment takes place according to example i.

. Example 3 The following etch is printed on dyeings of vat dyes: 26o g tragacanth thickening, 6o g water, 8o g glycerine, o - 100 g zinc white dough i: 1, o - 15o g kongalit C, 175-2509 sulfonated D, imethylphenyl- i - naphthomethylammonium hydroxide, So g of potassium carbonate, 5 g sodium hydroxide, o - 40 g triethanolamine 1000 g. The further treatment takes place according to example i.

Example q.

On with sulfur dyes, such as. B. Immedialgrün GG extra (Schultz, color tables, 5th edition, No. 7q.6) or Immedialindon RR conc. (Color Index No. 959), produced colorations, an etch of the following-'Züsefzüng is printed: 350g British gum thickening i: i, ioo g zinc white z: z, 8o g glycerine, i io g -water, 26o g sulfonated dimethylphenyl i - naphthomethylammonium hydroxide, 6o g potassium carbonate, qo g triethanolamine 1000 Steaming and aftertreatment are carried out as in example i.

If you add etch-resistant dyes to the listed white etching, see you get colorful effects.

Claims (1)

PATENT CLAIM: Process for the etching of colorations, which with vat or sulfur dyes are produced, characterized in that the etching agent alone or together with other etchants Dalkyl phenyl - i - naphthomethylammoniumverbindungen or their substitution products are used.