SU819136A1 - Acid monoazodye for polyamide fibre materials - Google Patents

Description

(54) ACID MONOAIR DYE FOR POLYMIC SEDD FIBER MATERIALS resistant to light and wet treatments. The proposed dyes are obtained by diazotization of sulfanophenyl esters of sulfanilic acid or its chlorine derivatives of the general formula by treatment with sodium nitrate or nitrosyl sulfuric. acid in acidic medium, followed by combination with the azo component of the general formula HA, where A has the indicated meanings, in a neutral or acidic medium in the presence of sodium acetate. The resulting azo dyes are isolated in a known manner by acidification or salting out with sodium chloride. Dyes are used either individually or in the form of outlet forms containing sodium sulfate, dextrin, dispersants and other fillers. Example. 100 ml of 6.4% aqueous solution of sodium salt of m-sulfophenyl ether) and 2,5-dichloroaniline-4-sulfonic acid with the addition of 5 ml of concentrated hydrochloric acid with a density of 1.14 g / cm and ice are diazotized with a solution of 1.05 g sodium nitrite in 10 ml of water and stirred for 30 minutes at 20 ° C. To the resulting razorine thief of the diazonies, 2.92 g of N, N-di- (fi-hydroxyethne) -m-toluidine in 30 acetic acid are poured, then 40 ml of 10% - After stirring for 2 hours, the dye is filtered and crystallized from 80% alcohol. 8.6 g of azo dye are obtained, dyeing polyamide fibers in burgundy color with a bluish tint. Found,%: C 44.15, 44.45f H 3, 3.6i; C1 11.50, 11 N 6.31, 6.60) S 10.1 10.27. Cj HaCE N NaOgSj. 5, C, 44.09; H, 3.54) CJ, 11.32; N, 6.71) S, 10.24. Example2. 4.2 g of the sodium salt of l-sulfophenyl ether of 2,5-dichloroaniline-4-sulfonic acid is dissolved in 100 ml of water and 10 ml of concentrated hydrochloric acid, cooled to 0 ° C, a solution of 0.7 g of sodium nitrite in 10 ml of water is poured and move 1 hour at 20 ° C. To the resulting diazonium solution, 2 g of 2-phenylindole in 50 ml of acetic acid are added, 0 g of sodium acetate is added, the precipitate is filtered, crystallized from alcohol. 6.1 g of azo-dye are obtained, the polyamide fibers are colored bright orange in color. Example; 3.86 g of 2-chloroaniline-4-sulfonic acid p-sulfophenyl ester sodium salt are dissolved in 200 MP of water and 10 MP of concentrated hydrochloric acid / oxyhydroxylate to shave a solution of 0.7 g of sodium nitrite in 20 MP of water and stirred for 1 hour at 20 ° C. 1.95 g of M, M-di- (fi-hydroxyethyl) m-toluidine is poured into the diazonium solution in 30 ml of acetic acid, then 40 ml of 10% sodium acetate solution, stirred for 2 hours, the dye is filtered off, crystallized from 80% alcohol. 5.5 g of azo dye are obtained, dyeing the polyadic fibers in a bright red color. Example4. 3.28 g of sulfanilic acid p-sulfophenyl ester are diluted in 100 ml of water and 10 ml of concentrated hydrochloric acid, cooled at a temperature from 0 to a solution of 0.7 g of sodium nitrite in 10 ml of water is poured in and stirred for 15 minutes. To the resulting diazonium solution, 2 g of 2-phenylindole are poured into 100 ml of acetic acid, 20 g of sodium acetate are added, stirred for 3 hours, the precipitate is filtered off, cristized from diluted alcohol. Get 5, -2 g of azo dye, stained with polyamide fibers in yellow-orange color. Similarly, the acid azo dyes for polyamide fibers obtained in the table are obtained

p-cresol

H, M-di- (-oxyethyl) -aniline (II)

N-Ethyl-N- ((1-hydroxyethyl) -aniline

Orange.

Scarlet

Red

-.

m-sulfophenyl ether

2,5-dichloroaniline-4-sulfonic acid

10 p-Sulfofanilovyy M, N-Di- (p-okefir 2/5-dichloro-ksietil) -m-toaniline-4-sulfo-luidin (V) acid

eleven

Also

, P

eleven

sulfanilic acid p-sulfophenyl ester

Also

m-Sulfophenyl ether sulfanilic acid

Also

2-Chloraniline-4-sulfonic acid p-sulfophenyl ester

m-Sulfophenyl ester of 2-chloroaniline-4-sulfonic acid Example 20. A sample of knitted fabric made of textured polyamide-6 (elastic) was treated for 20 minutes in a bath containing 4% equalizer (a mixture of amino-active, non-ioschisic oil and a non-organic preparation OP- 10 in a ratio of 5: 1) and 4% ammonium sulphate to a pH of 6 by weight of the material to be painted. Bath module 1:50. After that, 1% of the dye from Example 8 is added as a 1% solution, heated to boiling and dyed for 1 hour at this temperature. The sample, painted in bright orange color, washed with warm and cold water and dried. 65

Table continuation

Bright Orange Red

Bright red

Red with CI I I inconsistent shades

Also

Red with a blue tint

Bright orange

Also

Orange to those for K K ro K pr K lo The color stability (in points) to light and wet processing is characterized by the following, according to GOST 9733-61: After No control, no light distilled 4 / 4-5 / 54/5/5 small 4/5/5 and 40 ° C 4 / 4-5 / 5 4 / 4-5 / 5 4/4/5 sweat The main raw materials for predzhenny dyes are available and have a low cost, resulting in a low dye cost of 4500 rubles . per ton of dye, which is two times lower than the cost of disperse dyes, usually used for caprone dyeing.

p-cresol, p-phenylindole or aniline derivative of the general formula

Formula inventions

Acid monoazo dye total phosphomyl

/AND

iVDje R and ft - hydrogen or chlorine}

And - the remainder of the composition of ptsy

where alkyl, hydroxyethyl, cyano.til} R is hydrogen, methyl or acylaMUHoi-pynna, for polyamide fibers.

Sources of information, gfinye into account during the examination

1. Color Index, edition 3-thrd, vol. 1, 5, London, 1971. 2. Patent of England 1031535, cl. C4P, pub. 05.10.60 (prototype).

Claims (1)

Claim The acid monoazo dye of the general formula where R and R | - hydrogen or chlorine; A is the remainder of the aerosol component p-cresol, p-phenylindole or aniline derivative of the general formula where L ^ and R <$ are alkyl, hydroxyethyl, cyanoethyl; R4 is hydrogen, methyl or acyl, amino, for polyamide fibrous materials.