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Chromic blue azo dye as well as preparation method and application thereof

A technology of brilliant blue azo and blue azo, which is applied in the field of brilliant blue azo dye and its preparation, can solve the problems of poor washing fastness, influence the dyeing fastness of dyes to fabrics, etc., and achieves low cost and excellent Washing fastness, good dyeing performance

Inactive Publication Date: 2017-07-21
HANGZHOU FLARIANT SPECIALTY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Azo dyes have a variety of colors, such as red, yellow, green, blue, etc., but the existing blue azo dyes have problems such as poor washing fastness, and are easily migrated from the interior of fabric fibers under high temperature conditions. Seriously affect the color fastness of dyes to fabrics

Method used

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  • Chromic blue azo dye as well as preparation method and application thereof
  • Chromic blue azo dye as well as preparation method and application thereof
  • Chromic blue azo dye as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of brilliant blue azo dye of the present embodiment, structural formula is as follows:

[0035]

[0036] where R 1 means H;

[0037] R 2 means methyl;

[0038] R 3 Indicates ethyl.

[0039] The preparation method of this brilliant blue azo dye is as follows:

[0040] 1) Add a certain amount of sulfuric acid and nitrosyl sulfuric acid to the diazo kettle, control the temperature between 20 and 25 degrees, slowly add 6-bromo-2,4-dinitroaniline, and keep warm at 20 to 25 degrees after adding React for 4 hours, check the end point with ice water, and set aside after passing the test.

[0041] 2) Add water, sulfuric acid and sulfamic acid to the coupling bucket, then slowly add the coupling component (3-N,N-dipropionyloxymethyl-acetanilide) to dissolve, add ice and cool down to about 0 degrees, slowly Slowly add the diazonium salt prepared above to carry out the coupling reaction. After the diazonium salt is added, continue to stir until the diazonium salt d...

Embodiment 2

[0046] A kind of brilliant blue azo dye of the present embodiment, structural formula is as follows:

[0047]

[0048] where R 1 means CH 3 O;

[0049] R 2 means ethyl;

[0050] R 3 Indicates methyl.

[0051] The preparation method of this brilliant blue azo dye refers to Example 1, the difference lies in that the coupling components are different.

Embodiment 3

[0053] A kind of brilliant blue azo dye of the present embodiment, structural formula is as follows:

[0054]

[0055] where R 1 means C 2 h 5 O;

[0056] R 2 means butyl;

[0057] R 3 Indicates ethyl.

[0058] The preparation method of this brilliant blue azo dye refers to Example 1, the difference lies in that the coupling components are different.

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Abstract

The invention discloses a chromic blue azo dye as well as a preparation method and application thereof. The structural formula is as shown in formula (I). The chromic blue azo dye in the invention is applied to polyester fiber dyeing or printing. The chromic blue azo dye is selected from at least one compound of structural general formula (I) to prepare and obtain a disperse dye composition, and the disperse dye composition can be applied to polyester fiber dyeing or printing. During dyeing, the washing fastness, rubbing fastness, perspiration fastness, light fastness and degree of dyeing are excellent, and the disperse dye composition in the invention is high in strength, bright in color and good in dyeing property, particularly has excellent washing fastness, is stable in color and luster, is unlikely to fade and is relatively low in cost.

Description

technical field [0001] The invention belongs to the technical field of dyes, and in particular relates to a brilliant blue azo dye and a preparation method and application thereof. Background technique [0002] After entering the 21st century, the competition in the world's textile market has become increasingly fierce. Southeast Asia's economy has become synonymous with low cost and high growth, and the textile industry business in Europe and the United States has also accelerated its transfer to Asia. In order to adapt to the situation of fierce competition in the textile market, it has become the common goal of textile enterprises to continuously reduce the production cost of textiles, continuously improve product quality, and continuously reduce environmental loads. [0003] Disperse dyes have very low solubility in water, very fine particles, and are dispersed in the dye solution. They are non-ionic dyes and are mainly used for polyester dyeing with high color fastness....

Claims

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Application Information

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IPC IPC(8): C09B29/08D06P1/18D06P1/19D06P3/54
CPCC09B29/0833C09B29/0834C09B29/0838D06P1/18D06P1/19D06P3/54C09B51/00D06P3/56
Inventor 李百春
Owner HANGZHOU FLARIANT SPECIALTY
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