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

A synthetic method and reactive yellow technology, applied in the field of dyes, can solve the problems of dyes that cannot dye dark colors, high unit cost, waste of materials, etc., and achieve the effects of reducing production costs, reducing printing and dyeing costs, and eliminating environmental pollution

Inactive Publication Date: 2005-01-26
江苏申新染料化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the process is that the unit cost of the product is high, the secondary condensation ratio reaches 1.2-1.3, the material waste is serious, and the price of the meta-ester is about 2 times that of the para-ester, salting out produces sewage, and the dye cannot dye dark colors

Method used

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  • Active yellow SHE, synthetic method and its composite active yellow dye
  • Active yellow SHE, synthetic method and its composite active yellow dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Diazo: Beat 100 parts of 3,6,8-trisulfonic acid-2-naphthylamine dry product with ice, then add hydrochloric acid with a ratio of 1-1.5, add sodium nitrite solution to carry out diazo, and control the temperature at 0- 10°C.

[0011] Coupling: Add 100 parts of m-aminoaniline acetylated hydrochloride to the above diazo compound for coupling, pH value 4-7, temperature 5-10°C.

[0012] Primary condensation: ice grind 105 parts of cyanuric chloride at about -2-2°C, then add the above-mentioned coupling material for primary condensation, control temperature at 5-15°C, and pH value at 5-7.

[0013] Para-ester diazo coupling: beat 85 parts of dry p-(β-sulfate ethyl sulfone) aniline in the presence of ice, then add hydrochloric acid with a ratio of 1-1.5, and carry out diazo with sub-nano solution, At the end of the diazo, 2,4-disulfonic acid aniline was added for coupling.

[0014] Secondary condensation: add the primary condensation material to the above-mentioned coupling m...

Embodiment 2

[0015] Example 2, referring to Example 1, during the second condensation, 95 parts of the coupling solution of para-ester diazonium salt and 2,4-disulfonic acid aniline are subjected to secondary condensation, and the pH is controlled at 7-9, and the temperature is 40-60 °C, spray dry after the reaction, and standardize.

Embodiment 3

[0016] Example 3, composite reactive yellow, consists of 90 parts of reactive yellow SHE monomer, 1 part of dustproof agent, and 9 parts of sodium sulfate.

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PUM

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Abstract

Disclosed is a yellow SBE monomer which is prepared by coupling 3,6,8-trisulfonic acid -2- naphthylamine diazonium with meta-amino-benzeneamine acetylized hydrochlorate, primary condensation with cyanuric chloride, then carrying out second condensation to p(beta-sulfate ethyl sulfone)aniline diazonium salt and 2,4-disulfonic phenylamine coupling liquid, and drying.

Description

technical field [0001] The invention relates to the field of dyes, and refers to a new 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] At present, the medium-temperature yellow varieties used in the printing and dyeing industry are mainly reactive yellow M-3RE products, which have a small molar extinction coefficient ratio and a maximum absorption wavelength of about 440nm. Between 3 and 4, the ratio of transplantation Rf is 0.6 to 0.7. Its synthesis process is mainly to use the diazo compound of 3,6,8-trisulfonic acid-2-naphthylamine to couple with m-aminoaniline acetylated hydrochloride, and carry out 20-30% sodium chloride salt after the coupling end point Analysis, pressure filtration, and then the filter cake is dissolved, analyzed by the oxidation-reduction method, and the yield is calculat...

Claims

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Application Information

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IPC IPC(8): C09B35/12
Inventor 史锦锋
Owner 江苏申新染料化工股份有限公司
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