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Yellow to red composite reactive dye

A reactive dye and red technology, applied in the field of yellow to red composite reactive dyes, can solve the problems of colored sewage, color fixation rate and fastness performance can not fully meet the demand, etc. excellent effect

Inactive Publication Date: 2010-06-16
ZHEJIANG LONGSHENG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, there are many reactive dyes that dye fabrics into yellow or red, such as the dyes described in patents CN101440227, CN1511887, US5308362 and US6168636, but most of the compound dyes are currently in terms of lifting power, compatibility, solubility, color fixation and fastness. However, it still cannot fully meet the needs in terms of degree of stability and performance. For example, the fixation rate of general reactive dyes is only about 70%, and unfixed dyes enter the wastewater to form a large amount of colored sewage, and the solubility of dyes at room temperature does not exceed 250g / l

Method used

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  • Yellow to red composite reactive dye
  • Yellow to red composite reactive dye
  • Yellow to red composite reactive dye

Examples

Experimental program
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Effect test

Embodiment 1

[0039] The synthesis of formula (I-1) structural dye A:

[0040]After beating 0.1mol of 3,6,8-trisulfonic acid-2-naphthylamine evenly, use ice to maintain the temperature at 5-8°C, add hydrochloric acid and sodium nitrite solution to carry out diazotization reaction, and then pour the diazonium Add 0.1mol of m-urea amidoaniline hydrochloride hydrochloride to carry out coupling reaction at 5-10°C and pH4-6, and then carry out coupling reaction with 0.1mol of cyanuric chloride at 0-5°C until the end of the coupling For primary condensation, keep the temperature at 0-15°C and pH 4-6. After the reaction is completed, add 0.1mol of p-(β-sulfate ethyl sulfone) aniline for secondary condensation, control the temperature at 40-60°C, pH 5-7, and the reaction ends The final dye solution is desalted and dried to obtain the dye A with the structure of the following formula (I-1).

[0041]

[0042] The remaining dyes of formula (I) in the present invention can be prepared by referring ...

Embodiment 2

[0050] Add 90 parts of dye A of formula (I-1), 10 parts of dye B of formula (II-1), 45 parts of sodium sulfate, add 350 parts of water, stir and mix, adjust the pH value of the dye solution to 5.5-6.5, and dry The dye solution is prepared from the composite reactive dye, and according to the conventional dyeing method of the reactive dye, the dyeing and printing of the yellow tone can be obtained on the cotton fabric.

Embodiment 3

[0052] The synthesis of formula (III-1) structural dye C:

[0053] Mix 0.1 mol of cyanuric chloride and dispersant in the presence of ice to beat evenly, add 0.1 mol of p-(β-sulfate ethyl sulfone) aniline to condense once, control pH 2~3, temperature 6~12°C, after the reaction is completed, Add 1 part of H acid for secondary condensation, control pH 3~5, temperature 25~35°C, cool down to 20~30°C after the reaction, and finally couple with 1,5-disulfonic acid-2-naphthylamine diazonium salt, The dye solution after the coupling is desalted and dried to obtain the dye C with the structure of the following formula (III-1).

[0054]

[0055] The remaining dyes of formula (III) in the present invention can be prepared by referring to the above-mentioned similar method.

[0056] The synthesis of formula (IV-4) structural dye D:

[0057] Beat 0.2mol of p-(β-sulfate ethyl sulfone) aniline evenly, add hydrochloric acid and cool down to 5°C with ice, add sodium nitrite solution and c...

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Abstract

The invention provides a yellow to red composite reactive dye, which mainly contains one or more components A shown in a structural formula (I), one or more components B shown in a structural formula (II), also can contain one or more components C shown in a structural formula (III) and / or one or more components D shown in a structural formula (IV). The yellow to red composite reactive dye of theinvention has the advantages of excellent lifting power, good compatibility, bright color, high fixation rate, high solubility, good salt and alkali tolerance, good color fastness and the like, and is an ideal selection for dye factories to reduce the cost and increase the one-off dyeing success rate.

Description

(1) Technical field [0001] The invention relates to a composite reactive dye. It is especially suitable for yellow to red composite reactive dyes for printing and dyeing of nitrogen-containing and hydroxyl-containing fiber materials such as cellulose fiber materials. (2) Background technology [0002] Reactive dyes have the remarkable characteristics of bright color, low cost, easy application and strong adaptability. However, with the development of fiber varieties and dyeing technology, and the improvement of the application performance requirements of reactive dyes, the blending application of multi-reactive dyes has been widely valued. As we all know, there are many reactive dyes that dye fabrics into yellow or red, such as the dyes described in patents CN101440227, CN1511887, US5308362 and US6168636, but most of the compound dyes are currently in terms of lifting power, compatibility, solubility, color fixation and fastness. The degree of stability and performance sti...

Claims

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Application Information

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IPC IPC(8): C09B62/085C09B62/513C09B67/24D06P3/66
Inventor 阮伟祥王晓红章建新宋瑜
Owner ZHEJIANG LONGSHENG GROUP
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