SU445338A1 - Process for preparing active dyes - Google Patents

Abstract

The METHOD of producing ACTIVE DYES of the general formula ~ alkyl or substituted alkyl, for example - CH ^ CH ^ SO-H; Y is OH, BCHD, COOH, C1 or H, different in that; that the amine of the general formula ^^ - 11H $ (BjRjXCHjCHg ^ Oz, where A is the residue of the azo-component of the naphthalene or pyrazolone series; where R ^, R2, Y have the indicated values, are diazotized and combined with the azo-component of the naphthalene or pyra-golone p yes followed by the allocation of the dye in a known manner.? (L

Description

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00 The invention relates to a process for producing new red, blue active dyes that can be used to dye wool and cellulose fibers with high strength properties for wet treatments. The proposed reactive dyes have the general formula iljK2HClLjCH2 $ 02; J-TtH $ oj KjSglfCHjCHjSOz where A is the residue of the azo-containing naphthalene or pyrazolone series; R is alkyl; Rj is alkyl or substituted alkyl, for example -CHjCH SO HY - OH, OCHj, COOH, C1 or H. The method for producing reactive dyes is that the amine of the general formula li, R, jVCH2 5H2SO.j is n & RjweHjtojgOj where R, Rj, Y have the indicated values, are diazotized and combined with azo to make up the naphthalene or ylol of the zolone series, Example 1. 10.2 g of 69.6% 1-amino-8-naphthol 3; b-bis -ij2-si-5 - ((L-H-H-methyl-H-sulfoethylaminoethyl-sulphonyl) -phenyl D-sulphamide 1) labels are dissolved at 40 ° C: in 28 mp of glacial acetic acid, 3.5 mp of chemically pure hydrochloric acid and 40 MP of water solution is cooled to and / or shazoti rut 6 MP 2 n, solution of sodium nitrite at 5-10 ° C for 30 min, To a solution of 3.4 g of 68% 1-fesh1L-Y-naphtylamine-8-sulfonic acid in 60 water and 7 ml of 10% An aqueous solution of soda is added to the diazo compound, maintaining the pH 4 with a 32% sodium acetate solution, and the colorized dye is filtered off and dried. 11 g of monoazo dye are obtained; concentration about 66% (mol. weight. 1291). Output about 80%. The dye dyes wool in pure blue color, the colors are good with No. 1 strength to light and wet treatments. When using instead of 10.2 g of 69.6% 1-amino-8-naphthol-3,6-bis- {G2-methoxy-5- (pK-methyl-K-sulfoethylaminoethylsulfonyl) -phenyl2-sulfamide 8 , 6 g of 80% 1-amino-8-naphthol-3, 6-bis-4- (p-N-methyl-H-sulfoethylaminoethylsulfonyl-phenylsulfonamide receive a greenish-blue dye, dyeing common wool with high indicators of strength to light and wet treatments. Example 2. 6.55 g of 70% 1-amino-8-naphthol-3,6-bis-4- (p-N, N-diethylaminoethylsulfonyl) -phenylsulfamide7 are dissolved in 25 mt of water and 2 №1 with 20% hydrochloric acid, the solution is cooled before and diazotized at 0-5C with 2.45 ml of 14% a solution of sodium nitrite, the reaction mass is stirred for 1 h with then, then an excess of nitrous acid is removed with aminosulfonic acid. To a solution of 1.27 g of 94.1% 2-amino-8-naphthol-6-sulfonic acid in 10 ml of water and 0 , 5 mp of 10% soda solution (pH of solution 6.5), 5 solution of diazo compound is added at and pH about 4, the reaction mass is stirred for 2 hours at room temperature, then 7 g of potassium chloride is added, the separated dye is filtered and dried at room temperature. 7.9 g of dye is obtained, a concentration of 63% (mol, weight, 12, 7), & PPSOD 81%. Dye, when printed on cotton fabric, gives Rubino1 1st color, the paint is distinguished by good indicators of durability to light and wet treatments, The table shows the dyes obtained in examples 1 and 2,

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Table continuation

-N- (CH) (CH2CH2SQjH)

-N- (CH) 2

-N- (CHj) (CH2CH,)

-N- (ciy (ai2Cii, sOgH)

Yellowish,

brown

KrasnooSOS. Violet

Red, brown

Krasnosi. violet th

Claims (1)

METHOD FOR PRODUCING ACTIVE DYES of the general formula C / -0H where A is the residue of the azo component of the naphthalene or pyrazolone series; alkyl; - alkyl or substituted alkyl, for example, CH ₂ CH ₂ SO ₃ H; Y ^_ OH, OCH, COOH, C1 or H, characterized in that the amine of the general formula 1CV _g : H (5H ₂ (! H ₂ $ O2 where R _1t R ₂ , Y have the indicated meanings, are diazotized, and combined with the azo component of the naphthalene or pyrazolone series, followed by isolation of the dye in a known manner.