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Active yellow SDE and its synthetic method

A synthesis method and technology of reactive yellow, applied in the field of dyes, can solve the problems of increasing production input and cost, dyes cannot be dyed dark colors, poor directness, etc., to reduce the consumption of heat and electric energy, comprehensive product quality, and improve the content of the product. solid effect

Inactive Publication Date: 2007-01-24
无锡润新染料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both processes use meta-ester, which has a high unit cost. The ratio of secondary condensation of the first product reaches 1.05-1.3, which results in serious waste of materials, and the price of meta-ester is about twice that of para-ester, resulting in a large amount of salting-out For sewage, dyes cannot dye dark colors, and the Rf value is between 0.6 and 0.7, so the directness is not good; the latter uses nano-membrane treatment to reduce sewage but increase production input and cost

Method used

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  • Active yellow SDE and its synthetic method
  • Active yellow SDE and its synthetic method

Examples

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Effect test

Embodiment 1

[0010] Example 1, 100 parts of reactive yellow monomer was made of dry product of 3,6,8-trisulfonic acid-2-naphthylamine in the presence of ice, and then mixed with hydrochloric acid and sodium sulfite at about 5-8°C. After the diazotization reaction, add 105 parts of m-aminoaniline acetylated hydrochloride to the diazonium to carry out the coupling reaction under the conditions of 5-10℃ and PH value of 4-6. The cyanuric chloride is condensed once at about 0-5°C, keep the temperature at 0-15°C, and the pH value is 4-6.5. After the reaction is completed, add 104 parts of p-(β-sulfate ethyl sulfone) aniline dry product for the second time Condensation, control temperature 40-65℃, PH value 5-7, after reaction, filter and spray dry directly.

Embodiment 2

[0011] In Example 2, the reactive yellow monomer used 102 parts of 3,6,8-trisulfonic acid-2-naphthylamine dry product to be evenly slurried in the presence of ice, and then mixed with hydrochloric acid and sodium sulfite at about 5-8°C After the diazotization reaction, add 102 parts of m-aminoaniline acetylated hydrochloride to the diazonium to carry out the coupling reaction under the conditions of 5-10℃ and pH value of 4-6. The cyanuric chloride is condensed once at about 0-5℃, keep the temperature at 0-15℃, and the pH value is 4-6.5. After the reaction is completed, add 106 parts of p-(β-sulfate ethyl sulfone) aniline dry product for the second time Condensation, control temperature 40-65℃, PH value 5-7, after reaction, filter and spray dry directly.

Embodiment 3

[0012] Example 3, composite reactive yellow dye, composed of 90 parts of reactive yellow SDE monomer, 2 parts of dustproof agent, and 8 parts of sodium sulfate.

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Abstract

Disclosed is a active yellow SDE monomer, which is prepared by subjecting 3,6,8-trisulfonic acid -2-naphthylamine dried substance to beating homogeneously at the presence of ice, diazotizing with hydrochloric acid, coupling the diazonium substance with metaamino-benzene amine acetylated hydrochlorate, condensing with cyanuric chloride, charging (beta-sulfate ethyl sulfone) phenylamine dried article for second condensation, and direct drying by spraying.

Description

Technical field [0001] The present invention relates to the field of dyes, and refers to a reactive yellow monomer and a method for synthesizing the reactive yellow monomer. At the same time, it provides a composite reactive yellow dye with the reactive yellow monomer as the main component. technical background [0002] The existing reactive yellow M-3RE product has a small molar extinction coefficient, and the maximum absorption wavelength is about 440nm. Under the same concentration (10g / l), the k / s value of the rolled cloth is between 3 and 4. Its synthesis process is mainly to use the diazonium compound of 4,6,8-trisulfonic acid-2-naphthylamine to couple with m-aminoaniline acetylated hydrochloride, and the coupling end to carry out 20-30% sodium chloride salting out , Press filter, and then dissolve the filter cake, analyze by oxidation-reduction method, calculate the yield, and then condense with the calculated amount of cyanuric chloride at about 0℃ for the crushed materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B29/00
Inventor 史锦锋
Owner 无锡润新染料有限公司
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