Asymmetric azo complex dye and manufacturing method thereof

An azo-chromium and asymmetric technology, applied in the field of asymmetric azo-chromium dyes and their preparation methods, can solve the problems of poor color fastness and the like

Inactive Publication Date: 2009-09-02
ABLE ADVANCED CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore the present invention is exactly providing a kind of asymmetric azochrome dye, in order to improve the problem that the color fastness of traditional acid black dye is not good

Method used

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  • Asymmetric azo complex dye and manufacturing method thereof
  • Asymmetric azo complex dye and manufacturing method thereof
  • Asymmetric azo complex dye and manufacturing method thereof

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Embodiment Construction

[0012] The asymmetric azochromium dye of the embodiment of the present invention is the azo compound synthesized by the reaction of 6-nitro-1,2-diazooxynaphthalene-4-sulfonic acid and naphthol as the main body. The compound formed by the reaction of aminoazosulfonic acid naphthalene, resorcinol and a diazonium naphthalene compound, and the azo compound forms a chromium complex to obtain the following structure:

[0013]

[0014] Among them, R1 can contain H, NO 2 , R2 contains H, SO 3 H.

[0015] According to the embodiments of the present invention, the preparation method of asymmetric azochrome dyes is described in detail as follows:

[0016] Synthesis of Azo Compounds

[0017] A diazonium naphthalene compound and naphthol are reacted with an equivalent ratio of 100:105 to obtain an azo compound as shown in chemical formula (I):

[0018]

[0019] According to an embodiment of the present invention, 30 grams of 6-nitro-1,2-diazooxynaphthalene-4-sulfonic acid (1,2-a...

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Abstract

The invention relates to asymmetric azo dye and a manufacturing method thereof. The asymmetric azo dye comprises an azo compound which is taken as the main body, and the azo compound and a compound which is synthesized by para amino azo naphthalene sulfonate, hydroxyphenol and diazo onium naphthol compound form a chrome complex so as to obtain acidic black dye with high fastness and high dyeing force.

Description

technical field [0001] The present invention relates to a dye and its preparation method, and in particular to an asymmetric azochrome dye and its preparation method. Background technique [0002] Azo dyes are widely used in the current dyeing and finishing industry. Azo dyes are dyes containing one or more azo-based chromophoric groups. Technology that grows on or in fibers. [0003] Acid azo dyes generally contain soluble groups such as sulfonic acid groups, carboxyl groups and hydroxyl groups, are soluble in water, and are mostly dyed in acidic media. However, the wet treatment fastness of acid azo dyes is low, and the dyed and finished products need more The fastness can only be improved by washing once, which not only takes a lot of time, but also produces a lot of waste water, which relatively increases the cost. [0004] The disadvantages of acid black dyes are poor dyeing uniformity and accumulation effect, and insufficient color performance when used in cellulose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B45/26C09B43/00C09B35/50D06P1/39
Inventor 苏文桔李凤珠
Owner ABLE ADVANCED CHEM
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