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Compound active black dye applicable to deep printing of rayon and clean production process thereof

A technology of reactive black and dyes, applied in the field of dyes, can solve the problems of high printing cost, hard hand feeling, and large three waste pollution of rayon in deep black printing, and achieve good controllability of printing shade, good dyeing lifting power, and reduction of three wastes The effect of emissions

Active Publication Date: 2012-03-21
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

[0003] The present invention aims at the problems of high cost of rayon dark black printing in the printing and dyeing industry, large pollution of three wastes, easy reddening of color light, easy hard hand feeling and other problems, as well as the requirements of clean production and energy saving and emission reduction in the dye industry. Complex Reactive Black Dyes for Cotton Dark Printing

Method used

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  • Compound active black dye applicable to deep printing of rayon and clean production process thereof
  • Compound active black dye applicable to deep printing of rayon and clean production process thereof
  • Compound active black dye applicable to deep printing of rayon and clean production process thereof

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Embodiment 1

[0020] Example 1, the diazonium salt prepared by diazotizing the para-ester with hydrochloric acid, then coupled with H acid under strong acidic conditions of PH<2, and then coupled under the conditions of PH4.5~7.5 , the coupling temperature is 5-12° C., and the molar ratio of H acid to para-ester is 0.485:1.0 to obtain the structural component of formula I; this component can also be prepared according to conventional methods. (C.I. Reactive Black 5).

[0021] The diazonium salt prepared by diazotizing the p-position ester with hydrochloric acid, the diazonium reaction temperature is 0-10°C, and then adding 1-naphthylamine-4 sulfonic acid sodium salt at pH 5.5-7.0, temperature 5-12 Coupling is carried out under the condition of ℃, and the dye of the structural component of the formula II is obtained; (reactive red).

[0022] The diazonium salt prepared by diazotizing the sulfonated para-ester with hydrochloric acid, the diazonium reaction temperature is 0-10°C, and then add...

Embodiment 2

[0024] Embodiment 2, will make reactive black, reactive red and reactive orange dyestuff according to the method for embodiment 1 and be 70 parts of C.I. reactive black 5, 15 parts of reactive red, 15 parts of reactive orange solution mix according to the mass proportion after drying, spray Dried to obtain reactive black raw powder dyes, adding standardized auxiliary agents to obtain commercial products.

Embodiment 3

[0025] Embodiment 3, will make reactive black, reactive red and reactive orange dyestuff according to the method for embodiment 1 and be 65 parts of C.I. reactive black 5, 25 parts of reactive red, 25 parts of reactive orange solution mix according to the mass proportion after drying, spray Dried to obtain reactive black raw powder dyes, adding standardized auxiliary agents to obtain commercial products.

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Abstract

The invention discloses a compound active black dye applicable to deep printing of rayon and a clean production process thereof. The compound active black dye mainly consists of structural components shown as a formula I, a formula II and a formula III in the weight ratio of (55-75):(10-25):(5-25). The compound active black dye can be applied to printing processes of dry powder size mixing and automatic size mixing systems, has the advantages of large dyeing improvement, high product solubility, high chlorine soaking firmness, high printing chromatic light controllability, higher product performance than the conventional active black dye and high applicability, and can be applied to discharge printing and resist printing of cellulose fibers such as cotton, rayon and the like.

Description

technical field [0001] The invention belongs to the technical field of dyes, and relates to a composite reactive black dye that can be used for dark-color printing of rayon and a clean production process thereof. Background technique [0002] For traditional rayon dark black printing, in order not to affect the hand feel of rayon, reactive black dyes with a chloro-s-triazine structure are generally used, such as reactive black K-BR, reactive black P-GR and other dyes, and the color intensity of the dye is low. Low color fixation rate, large amount of dyes used, high cost of printing and dyeing and waste treatment, cannot meet the needs of energy saving, emission reduction and clean production in the printing and dyeing industry. Contents of the invention [0003] The present invention aims at the problems of high cost of rayon dark black printing in the printing and dyeing industry, large pollution of three wastes, easy reddening of color light, easy hard hand feeling and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/22C09B67/24D06P1/384D06P3/66
Inventor 史锦峰曾建徽
Owner 无锡润新染料有限公司
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