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

A synthesis method and technology of reactive red, applied in the field of dyes, can solve the problems of complex production process, insufficient color yield, too much sewage, etc., and achieve the effect of reducing pollution links and reducing salting-out process.

Inactive Publication Date: 2005-01-26
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

[0002] The existing red M-3BE uses 10-20% H acid solution to shrink with cyanuric chloride, and then performs diazonium salt coupling with the solution 1,5-disulfonic acid-2-naphthylamine, adding 10-20% The sodium chloride is salted out, filtered and separated, the filter cake is beaten into a solution, and then subjected to secondary condensation with a meta-ester solution with a content of 20-30%, salted out and dried. This product is synthesized, filtered, dried, The unit cost of the product obtained by the crushing and blending process is high, the color is not deep enough, and the whole production process is complicated, and there is a lot of sewage

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0010] Example 1, the p-(β-sulfate ethyl sulfone) aniline, hydrochloric acid, sodium nitrite, diazonium at 0 ~ 5 ° C, acid-base coupling with H, and then condensed with cyanuric chloride, and then with N-ethyl N-ethylethylenediamine is dicondensed, the ratio of N-ethylethylenediamine is 0.5, PH=8-9, the temperature is about 25-30°C, the dicondensed solution is concentrated by nano-membrane, and then sprayed dry to obtain Monomer reactive red SHE finished product.

Embodiment 2

[0011] Example 2, referring to Example 1, the ratio of N-ethylethylenediamine dicondensation during dicondensation is 0.6, pH=6.5-8, and temperature is between 22-28°C.

Embodiment 3

[0012] Embodiment 3, composite reactive red dyestuff, is made up of 90 parts of reactive red SHE monomers, 2 parts of dustproof agent, 8 parts of sodium sulfate.

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Abstract

Disclosed is active red SHE monomer which is prepared through coupling (beta-sulfate ethyl sulfone) phenylamine with hydrochloric acid, carrying out diazonium at 0-5 deg. C, condensing with cyanuric chloride, then carrying out second condensation with N-ethyl ethylenediamine.

Description

technical field [0001] The invention relates to the field of dyes, and refers to a new reactive red monomer and a method for synthesizing the reactive red monomer, and simultaneously provides a composite reactive red dye with the reactive red monomer as the main component. technical background [0002] The existing red M-3BE uses 10-20% H acid solution to shrink with cyanuric chloride, and then performs diazonium salt coupling with the solution 1,5-disulfonic acid-2-naphthylamine, adding 10-20% The sodium chloride is salted out, filtered and separated, the filter cake is beaten into a solution, and then subjected to secondary condensation with a meta-ester solution with a content of 20-30%, salted out and dried. This product is synthesized, filtered, dried, The unit cost of the product obtained by the crushing and blending process is high, the color is not deep enough, and the whole production process is complicated and there is a lot of sewage. Contents of the invention ...

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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