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Reactive black dye composition

A dye composition and dye compound technology, applied in the field of reactive dye compositions, can solve the problems of weak dye depth, poor lifting power, insufficient blackness and the like

Inactive Publication Date: 2013-05-01
ZHEJIANG LONGSHENG CHEM RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, there are also defects such as poor lifting force and insufficient blackness, which limit its wide use.
[0003] The existing reactive black dye color matching products still have problems such as poor dyeing depth, low dyeing rate and color fixation rate, and difficult cleaning of dyed fabrics in the actual application process, such as patents CN102245712A, CN1730566A, etc.
This is due to the high concentration of dyes used in deep-color dyeing, the amount of floating dyes increases, and the adsorption of dyes to fibers has a saturation value. Generally, the concentration of dyes should not exceed 10% of the saturation value of dyeing. Excessive dyes cannot be dyed and fixed. It will accumulate on the surface of the fabric. If the cleanability is not good, it will inevitably affect the wet fastness of the dyed fabric, resulting in poor dyeing performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: the preparation of formula (II-1) compound

[0042] (1) Diazotization: Add 17.3g of 2-aminobenzenesulfonic acid to 150mL of water and stir evenly, then cool to 0~5°C, add 12.5g of 31% (w / w) hydrochloric acid, maintain 0~5°C slowly Slowly add 24.5g of 30% (w / w) sodium nitrite aqueous solution dropwise, stir at this temperature for 1 hour, use sulfamic acid to eliminate excess sodium nitrite, and obtain diazonium solution of 2-amino-benzenesulfonic acid.

[0043] (2) Diazotization: add 56.2g of para-ester (i.e. p-(β-hydroxyethylsulfone sulfate) aniline) to 150mL of water and stir evenly, then cool to 0~5°C, maintain 0~5°C slowly Slowly add 21g of 31% hydrochloric acid and 48g of 30% sodium nitrite dropwise, stir at this temperature for 1 hour, use sulfamic acid to eliminate excess sodium nitrite, and obtain a diazonium solution of para-ester.

[0044] (3) Coupling: Add 15.2g of 3,5-diaminobenzoic acid into 100mL of water, after dissolving, add the diazonium...

Embodiment 2

[0047] Embodiment 2: the preparation of formula (II-2) compound

[0048] (1) Diazotization: add 26.0g of anthranilic acid to 280mL of water and stir evenly, cool to 0~5℃, add 18.7g of 31% hydrochloric acid, slowly add 36.7g of 30 % sodium nitrite aqueous solution, stirred at this temperature for 1 hour, and eliminated excess sodium nitrite with sulfamic acid to obtain diazonium solution of anthranilic acid.

[0049] (2) Diazotization: add 84g of para-ester (i.e. p-(β-hydroxyethylsulfone sulfate) aniline) to 250mL of water and stir evenly, then cool to 0~5℃, keep at 0~5℃ and slowly Add 30g of 31% hydrochloric acid and 72g of 30% sodium nitrite dropwise, stir at this temperature for 2 hours, use sulfamic acid to eliminate excess sodium nitrite, and obtain the diazonium solution of para-ester.

[0050] (3) First coupling: add 23.0g of 3,5-diaminobenzoic acid into 160mL of water, after dissolving, add the diazonium salt of step (1) into the solution, adjust the pH value to 5.7~6....

Embodiment 3～5

[0054] According to the preparation method described in Example 1 or a similar method, the difference is: the arylamine 1 and arylamine 2 in Table 1 are used to replace the arylamine in step (1) and step (2) respectively to carry out diazo The hydrazone dyes shown in Table 1 can be prepared, and the dyed fabrics appear bright yellow.

[0055] Table 1

[0056]

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PUM

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Abstract

The invention provides a reactive black dye composition. The reactive black dye composition mainly comprises 45-99 parts of at least one component A shown in formula (I) and 1-55 parts of at least one component B shown in formula (II) by mass. The reactive black dye composition has the advantages of good upgrading performance, high color fixing rate, high dyeing rate, easy washing, clear dyeing residual liquid, stable salt resistance and alkali resistance and excellent wet fastness when used in fabric printing and dyeing, and is a rare deep black economical dye.

Description

(1) Technical field [0001] The invention relates to a reactive dye composition, in particular to a reactive black dye composition with excellent lifting power, easy water washing and stable dyeing performance. (2) Background technology [0002] In cotton fiber dyeing, black accounts for almost 40-50%, and more direct dyes and sulfur dyes are banned and restricted due to environmental protection issues. Reactive black KN-B is used in a large amount because of its low price, good fastness, high color fixation rate and easy washing, and there is no environmental protection problem including AOX. But there are also defects such as poor lifting force and insufficient blackness, which limit its wide use. [0003] The existing reactive black dye color matching products still have problems such as poor dyeing depth, low dyeing rate and color fixation rate, and difficult cleaning of dyed fabrics in the actual application process, such as patents CN102245712A, CN1730566A, etc. This ...

Claims

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Application Information

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IPC IPC(8): C09B67/24C09B62/513D06P1/38D06P3/66
CPCD06P1/38D06P3/66D06P1/384C09B67/0059D06P3/666
Inventor 阮伟祥
Owner ZHEJIANG LONGSHENG CHEM RES
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