SU108717A1 - Method for producing acid anthraquinone dyes - Google Patents

Description

Vyp) skala1yea ntr akh nenovye

Dyes called Carbolang, which can stain Ikstv from neutral vaiii, are distinguished by good resistance to wet treatments. T-AK1-1E dyes are obtained by copdepsing derivatives of anthrax rnoya.chn their leuco-compounds with the corresponding 1osh, they alkylaned (pheni, 1a; 1kplaminaminn).

However, the methods of obtaining these redtels either possess a number of technological difficulties with a complex process and the generation of the desired products, or provide low yields of the desired products.

There is also a known method according to the history of the Kraspteli type “carbolaps of the same authors with application as arnla p1015 o-amnno-n-alkylpheno .YU.

The present invention proposes a method for the production of sprays of such a gin by direct alkylation of arylamino-anthraquinone-olefins in a conceptual sulfuric acid medium, followed by the isolation of acidic bases of anthraquinone erythromes and sulfonation by a known method.

Appn.1a ppuintraxinone Icopacids that can be treated with olefins T (as mentioned above, and the nodule products are used 1; epo nedst1; eino as acidic nyc oct o – tct o – ny – oct o – ny – octo ––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– pzpomu shlifirovapiya known method.

This acquisition expands the range of home-made paints, the first will be able to practical use, since it uses more affordable I1 raw materials than the known methods.

Example 1. 3.95 g of 1-amnno-4-fenplampno-2-anthraquinones. 1xplots, 12 g of HoSO.j, 3.6 g of oiecii octylenes (isolated from the waste of the petroleum industry, called fullmer-dpstnllta) 90-127 stirred at .30-35 ° for 10 hours.

The reaction masses are dissolved in 100 ml of ice water, the precipitate is filtered off, washed with water and dried. 4.5 g of technical product are obtained. The dye paints ngerst 13 neutral or weakly kgsloy bath in onn color.

Example 2. 3.9 g of 1,4-dianilidoanthraquinone, 12 s-96% HaSO., 6.8 g of a mixture of olefps with a boiling point of 90-127 ° are stirred at 50-55 ° for 6-8 hours. The reaction mixture is poured into 100 ml of ice water, filtered, washed until neutral, and dried. Get about 4.5 g of the technical product.

For purification, the product is stirred with 12 ml of glacial acetic acid, filtered, the solution is neutralized with soda and the separated dye is filtered off, washed and dried.

The base of the dye is sulphurised at 15–20 ° 5 ml of 15 / “- oleum. The reaction mass is poured into a 15% solution of sodium chloride, the precipitate is filtered off, washed with a solution of sodium chloride and dried. Dye dyes from a weakly acidic bath animal fibers in green.

Subject invention

Claims (2)

1. A method for producing acid anthraxiionic dyes from arylamino-nitraquinones, in order to expand the range of dyes, arylamino-anthraions are treated with olefins containing mainly from 8 to 12 carbon atoms, or mixtures thereof g; concentrated sulfuric acid at 15-60, after which the bases are acid anthraquinone dyes and are sulphated in a known manner. 2. A variation of the method according to claim 1, characterized in that arylaminoanthraquinone sulfonic acid is used as the starting arylaminoanthraions.