DE109063C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

Are the from the Amidonaphtoldisulfosä'ure K or H with monodiazo compounds Dyes represented in acidic solution by the action of identical molecules of a tetrazo compound converted into intermediate products and these with m-naphthylenediamine-βg-sulfonic acid of patent 89061 are combined, very valuable polyazo dyes are obtained. These are different from everyone else,. using the same procedure replacing the naphthylenediamine sulfonic acid dyes obtained by other components primarily through their increased Color strength excellent. Neither other amines nor naphthols or amidonaphthols can only approximately replace naphthylenediamine sulfonic acid in this respect. This is the only way to obtain a dye that is unheated with just a few percent Dyes cotton black. In addition, these colors are very easy to wash, water and and acid fastness excellent. Also for coloring. The products are suitable for semi-wool. The components for representing the monoazo dyes are due to the nature of the Amidonaphthol disulfonic acid used. With the Η-acid are primarily suitable Line only the nitrodiazo bodies and otherwise only very isolated ß-naphthylamine sulfonic acids , the K acid, on the other hand, is mainly a-naphthylamine, Aniline, amidoazobenzene, sulfanilic acid, acetyl - ρ - phenylenediamine, nitrodiazo bodies, and amidosalicylic acid, aminobenzoic acids.

Example 1. 36.2 kg of the neutral sodium salt of amidonaphthol disulfonic acid K are dissolved in 1000 l of water, with 14 kg of clay. Hydrochloric acid and acidified with the from 9.3 kg of aniline, 30 kg of cone. Hydrochloric acid and 6.9 kg of nitrite combined in the usual way obtained diazo compound. After about 10 hours it is made alkaline by adding soda and mixed with the tetrazo compound prepared in the usual way from 18.4 kg of benzidine. The intermediate body forms immediately and separates out as a greenish-black precipitate. The solution of 23.3 kg of m-naphthylenediamine-ß ₃ -sulfonic acid in 500 l of water and 15 kg of soda is now run in to the reaction mass while stirring. The precipitate gradually goes into solution again, then after 3 hours the mixture is warmed up and the dye is salted out. It dyes unstained cotton a deep blue-black.

Example 2. 23.4 kg of hydrochloric acid amidoazobenzene are diazotized with 15 kg of hydrochloric acid and 6.9 kg of nitrite in 1000 liters of water. The received Diazo compound becomes a solution of 34.1 kg of the acidic sodium salt of K-acid run. The coupling is completed after about 12 hours. You now make alkaline and if the rest of the procedure is the same as in example i, a dye is finally obtained, which dyes cotton deep black.

Example 3. 14.3 kg of a-naphthylamine become diazotized in the usual way. The diazo compound is combined with 34.5 kg of acid

Claims (1)

Sodium salt of amidonaphthol disulfonic acid K, which are dissolved in 1000 l of water. After standing for several hours, it is made alkaline with soda and mixed with the .Tetrazoverbindungen from 18.4 kg of benzidine. After a short time when the intermediate product is completely formed, the solution is then added to the reaction mass of 24 kg of m-naphthylenediamine-βg-sulfosulfonic acid in 50b 1 of water and 12 kg of soda, stir for about 3 hours, then warm up and salt out the dye. It dyes unheated cotton greenish-black. Example 4. The neutral compound is added to the diazo compound from 14.3 kg of p-nitroaniline Solution of 34.1 kg of amidonaphthol disulfonic acid H run. After about 12 hours you do alkaline, mixed with the tetrazo compound from 18.4 kg of benzidine, whereupon the intermediate product will soon be deposited. If this is done with the solution of 23.8 kg of m-naphthylenediamine sulfonic acid combined in 500 l of water and 15 kg of soda, the result is a dye - which isolates, Cotton dyes deep black. The use of tolidine, p-phenylenediamine or dianisidine in place of benzidine has little effect on the nuances of the dyes Influence. The following table summarizes the properties of the dyes claimed: Intermediate product of diazotized para-diamine with: aniline K acid chlorine p- Acetyl-p- a-naph- «! -Naph- Amido chlorine aniline Nitramline phenylene
diamine tylamine tylamine
ß ₄ -sulfo- azo-
benzene aniline K acid K acid K acid K acid acid +
K acid K acid H-acid P- Nitra nilin H-acid Powder paint: Color of
aqueous solution: Color of the solution
in sulfuric acid: When diluting
with water: Combined with Jt ₁ ß ₂ - N ap hty 1 en di am in - ß ₃ - s ulf ο s au re grey black. blue black grey black purple
Precipitation Gray
black
blue
black
violet
black
red
purple
Low
blow Gray
black
violet
black
blue
red
purple
Low
blow Gray
black
deep blue
blue
purple
precipitation Gray
black
blue
black
blue
blueness
precipitation Gray
black
blue
black
blue
purple
precipitation black
green
black
green
blue
blueness
precipitation bronze
black
violet
black
red
prickly
blue
red
purple
precipitation bronze black greenish black blue red-violet precipitate. Pa τεnt claim: Process for the preparation of cotton without stain black-staining polyazo dyes from the U ₁ ß ₂ -naphthylenediamine-ß ₃ -sulfonic acid additive to patent 93595, that consists in that instead of the process described in the patent mentioned under No. 3 and 6 for obtaining the mixed Disazo dyes here analogous disazo dyes are prepared from this acid by letting this acid act. · a) from the diazo compounds of aniline, chloroaniline, a-naphthylamine, oij-naphthylamine-β ₄ -sulfonic acid, p-nitraniline, acetyl-pphenylenediamine, amidoazobenzene and the amidonaphthol disulfonic acid K; b) from the diazo compounds of p-nitroaniline, chloroaniline and amidonaphthol disulfonic acid H.