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Active yellow SDE, synthetic method and its composite active yellow dye

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: 2005-01-26
无锡润新染料有限公司
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  • 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, synthetic method and its composite active yellow dye
  • Active yellow SDE, synthetic method and its composite active yellow dye

Examples

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Effect test

Embodiment 1

[0010] Example 1, the active yellow monomer adopts 100 parts of 3,6,8-trisulfonic acid-2-naphthylamine dry product to beat evenly in the presence of ice, and then mix it with hydrochloric acid and sodium nitrite at about 5-8°C. After the diazotization reaction, add 105 parts of m-aminoaniline acetylated hydrochloride to the diazo compound at 5-10°C and PH value of 4-6 to carry out the coupling reaction, and then combine with 105 parts of the Cyanuric chloride is condensed once at about 0-5°C, keeping the temperature at 0-15°C, and the pH value is 4-6.5. After the reaction is completed, add 104 parts of dry p-(β-sulfate ethyl sulfone) aniline for a second time Condensation, control temperature 40-65 ℃, pH value 5-7, after the reaction is completed, filter and spray dry directly.

Embodiment 2

[0011] Example 2, the active yellow monomer adopts 102 parts of 3,6,8-trisulfonic acid-2-naphthylamine dry product to beat evenly in the presence of ice, and then mix it with hydrochloric acid and sodium nitrite at about 5-8°C After the diazotization reaction, add 102 parts of m-aminoaniline acetylated hydrochloride to the diazo compound at 5-10°C and PH value of 4-6 to carry out the coupling reaction, and then combine with 103 parts of the Cyanuric chloride is condensed once at about 0-5°C, keeping the temperature at 0-15°C, and the pH value is 4-6.5. After the reaction is completed, add 106 parts of dry p-(β-sulfate ethyl sulfone) aniline for a second time Condensation, control temperature 40-65 ℃, pH value 5-7, after the reaction is completed, filter and spray dry directly.

Embodiment 3

[0012] Embodiment 3, composite reactive yellow dyestuff, is made up of 90 parts of reactive yellow SDE monomer, 2 parts of dustproof agent, 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 invention relates to the field of dyes, and refers to a reactive yellow monomer and a method for synthesizing the reactive yellow monomer, and simultaneously 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 a maximum absorption wavelength of about 440nm. At the same concentration (10g / l), the k / s value of the calico detection is between 3 and 4. Its synthesis process is mainly to use the diazo compound of 4,6,8-trisulfonic acid-2-naphthylamine to couple with the acetylated hydrochloride of m-aminoaniline, and carry out 20-30% sodium chloride salting-out at the end of the coupling , press filtration, then the filter cake is dissolved, analyzed by the oxidation-reduction method, and the yield is calculated, and then condensed with the calculated amount of cyanuric chloride at about 0°C f...

Claims

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Application Information

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IPC IPC(8): C09B29/00
Inventor 史锦锋
Owner 无锡润新染料有限公司
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