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Black reactive dye composition as well as preparation method and application thereof

A technology of reactive dyes and compositions, applied in the fields of dyeing, organic dyes, textiles and papermaking, etc., can solve the problems of limited wide use, poor lifting power, insufficient blackness, etc., and achieve good washing fastness and perspiration fastness, High lifting power and good jet blackness

Active Publication Date: 2018-06-01
ZHEJIANG RUIHUA CHEM
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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.

Method used

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  • Black reactive dye composition as well as preparation method and application thereof
  • Black reactive dye composition as well as preparation method and application thereof
  • Black reactive dye composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0038] The dyes of formula (I) and (III) can be conveniently synthesized in a manner well known to those skilled in the art, such as prepared according to conventional diazotization and coupling methods, or commercially available products;

[0039] Dyes of formula (II) can be prepared, for example, as follows:

[0040] 1. Beat 18.7 grams of 4B acid with appropriate water and ice. After ice grinding for about 1 hour, add hydrochloric acid (3.8 grams of HCl) and an appropriate amount of ice, stir for 5-10 minutes, add 7.0 grams of sodium nitrite that has been completely dissolved, maintain the temperature at 0 ° C ~ 15 ° C, keep the Congo red test paper bright blue, potassium iodide test paper slightly blue, stir and react for 1 hour, use sulfamic acid to eliminate excess nitrous acid, 4B acid diazonium salt is obtained.

[0041] 2. Add 15.2 grams of completely dissolved 3,5-diaminobenzoic acid solution dropwise to 4B acid diazonium salt, about 2 hours, stir for about 4 to 6 ho...

Embodiment 1

[0052] 62.5 parts by weight of component A of formula (I-1), 12 parts by weight of component B of formula (II-1), 8.5 parts by weight of component C of formula (III-1), and 17 parts by weight of sodium bicarbonate The dry powder is mixed by a mixing machine to obtain the composition 1, which can be used as a reactive black dye to dye cotton fabrics into black.

[0053]

[0054]

Embodiment 2

[0056] 62.5 parts by weight of component A of formula (I-1), 12 parts by weight of component B of formula (II-5), 8.5 parts by weight of component C of formula (III-1), and 17 parts by weight of star powder Dry powder mixing is carried out by a mixing machine to obtain composition 2, which can be used as a reactive black dye to dye cotton fabrics black.

[0057]

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Abstract

The invention provides a black reactive dye composition as well as a preparation method and application thereof. The black dye composition is prepared from a component A shown as a formula (I), a component B shown as a formula (II), a component C shown as a formula (III) and an optional auxiliary agent. The black dye composition provided by the invention is suitable for dyeing various fibers and textile fabrics and blended fabrics thereof; the black dye composition has a good color fixation rate; various color fastness properties are excellent and the black dye composition has relatively excellent comprehensive performance. The formula (I), the formula (II) and the formula (III) are shown in the description.

Description

technical field [0001] The present invention relates to a black reactive dye composition and its preparation method and use. Background technique [0002] In the dyeing of cotton fiber, black accounts for almost 40-50%, and the most used direct dyes and sulfur dyes are banned and restricted due to environmental protection issues. Reactive black KN-B is used in a large amount due to its low price, good fastness, high color fixation rate and easy washing, and no environmental protection problems including AOX. But at the same time, there are also defects such as poor lifting force and insufficient blackness, which limit its widespread use. [0003] At present, some patents on composite reactive black dyes have made obvious progress in improving the lifting power and jet blackness of reactive black dyes, such as published patents CN 1730566A, CN 1687244A and so on. However, due to the recent decline in the efficiency of the printing and dyeing industry and the increasingly fi...

Claims

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Application Information

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IPC IPC(8): C09B67/22C09B67/24D06P1/384
CPCC09B67/005C09B67/0072D06P1/384
Inventor 柳长江阮方平张明省王伟
Owner ZHEJIANG RUIHUA CHEM
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