High-solubility reactive dye and preparation method thereof

A technology of reactive dyes and high solubility, applied in the direction of reactive dyes, azo dyes, organic dyes, etc., can solve the problems of application limitations and low solubility, and achieve good solubility and broad application prospects

Inactive Publication Date: 2016-08-17
NANJING XIAOZHUANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many K-type reactive dyes with bright colors and superior performance, such as reactive yellow 2, reactive yellow KM-RN, reactive orange 5, reactive red K-2BP, reactive blue 5, etc., have limited applications due to their low solubility.

Method used

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  • High-solubility reactive dye and preparation method thereof
  • High-solubility reactive dye and preparation method thereof
  • High-solubility reactive dye and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In a 500mL beaker, add 9.26g cyanuric chloride (0.0503mol), 50g ice and a small amount of water, beat at 0-5°C for 1 hour, and then add 100mL N-methyl J acid (12.65g, 0.05mol) solution ( Coupling components), the pH value was controlled at 5-6, the reaction was carried out for 2 hours, and the reaction end point was detected by Ehrlich reagent.

[0024] 3.47g of sodium nitrite was added to 70mL of anthranilic acid solution (8.65g, 0.05mol), stirred and dissolved, and then added to an aqueous hydrochloric acid solution cooled to below 10°C (12.5mL of concentrated hydrochloric acid was added to 15mL of water), reaction 1 hours, control the microscopic blue color of potassium iodide test paper, sulfamic acid eliminates excess nitrous acid, and obtains anthranilic acid diazonium salt solution. The above-mentioned anthranilic acid diazonium salt solution was added to the condensation product of cyanuric chloride and N-methyl J acid to carry out a coupling reaction, and the r...

Embodiment 2

[0027] The difference with the above-mentioned embodiment 1 is that in this example, the precursor of the corresponding high-solubility reactive dye is synthesized with ethylenediamine instead of tetraethylenepentamine, and then reacted with sodium hydroxymethanesulfonate to obtain a high-solubility reactive dyestuff. Dye, other conditions are the same as in Example 1.

Embodiment 3

[0029] The difference with the above-mentioned embodiment 1 is that in this example, the precursor of the corresponding highly soluble reactive dye is synthesized with diethylene triamine instead of tetraethylene pentamine, and then reacted with sodium hydroxymethanesulfonate to obtain a high solubility. Reactive dye, other conditions are the same as in Example 1.

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Abstract

The invention discloses high-solubility reactive dye and a preparation method thereof and relates to the field of reactive dye. The preparation method includes: using cyanuric chloride and a coupling component to perform a condensation reaction, allowing arylamine diazonium salt to have a coupling reaction with the cyanuric chloride condensation product to prepare dichloro s-triazine type reactive dye, allowing the dichloro s-triazine type reactive dye to react with polyethylene polyamine, and allowing the product to have sulfonation reaction with hydroxymethyl sodium sulfonate or epoxy sodium proparesulfonic acid to prepare the high-solubility reactive dye. The preparation method has the advantages that the method is simple in process, the color performance and dyeing performance of the dye are unaffected, and the solubility performance of the low-solubility monochloro s-triazine type reactive dye can be improved evidently.

Description

technical field [0001] The present invention relates to a reactive dye, especially a highly soluble reactive dye and a preparation method thereof. Background technique [0002] Reactive dyes, also known as reactive dyes, contain reactive groups in their molecular structure, which can form covalent bonds with hydroxyl and amino groups on fibers such as cotton and wool, so the dyed fibers have higher resistance to washing, The rubbing fastness is the most important class of synthetic dyes. [0003] In recent years, in order to further save energy and reduce emissions, the printing and dyeing industry has favored multiples of reactive dyes in small liquor ratio dyeing, cold pad dyeing, low temperature dyeing and continuous dyeing. In addition, the emergence of computer-aided automatic batching, pulp mixing and the introduction of liquid dyes require It can prepare high-concentration dye solution and high-stability printing paste, which all put forward new requirements for the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/085C09B67/24
CPCC09B62/085C09B67/0072
Inventor 杨晶晶
Owner NANJING XIAOZHUANG UNIV
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