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

A technology of reactive red dye and synthesis method, applied in azo dyes, organic dyes, monoazo dyes and other directions, can solve the problems of complex production process, large amount of sewage and high unit cost

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 seco

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1, 100 parts of cyanuric chloride and 2 parts of dispersant are beaten to powder in the presence of crushed ice, and 100 parts of dry product are added to condense (β-sulfate ethyl sulfone) aniline once to control the pH value of 3 ~4, temperature 8~12℃, when the free amine is less than 1.5%, add 100 parts of dry H acid for secondary condensation, control the temperature at 25~35℃, control the pH value between 3~5, and cool down to Coupling with 100 parts of dry product 1,5-disulfonic acid-2-naphthylamine diazonium salt at 20-26°C, spraying dry directly after coupling.

Embodiment 2

[0011] Example 2, 100 parts of cyanuric chloride and 5 parts of dispersant are beaten to powder in the presence of crushed ice, and 104 parts of dry product are added to condense (β-sulfate ethyl sulfone) aniline once to control the pH value to 2.5 ~3.5, temperature 6~10℃, when the free amine is less than 1.5%, add 100 parts of dry product H acid for secondary condensation, control the temperature at 25~35℃, control the pH value of 4~5, cool down to 25~ after the reaction Coupling with 100 parts of dry product 1,5-disulfonic acid-2-naphthylamine diazonium salt at 30°C, spraying dry directly after coupling.

Embodiment 3

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

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Abstract

Disclosed is a red SBE monomer which is prepared by beating the cyanuric chloride and dispersing agent into powder form at the presence of trash ice, charging dried p(beta-sulfate ethyl sulfone) phenylamine for primary condensation, controlling pH=2-4, the temperature 6-12 deg. C, charging dired H acid for second condensation, controlling the temperature between 25-35 deg. C, controlling pH=3-5, carrying out diazonium salt coupling with dried 1,5-disulfonic acid -2-naphthylamine, direct drying by spray.

Description

technical field [0001] The invention relates to the field of dyes, and refers to a 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 [0...

Claims

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Application Information

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IPC IPC(8): C09B29/01
Inventor 史锦锋
Owner 无锡润新染料有限公司
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