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Yellow active dye and preparation and application thereof

A reactive dye, yellow technology, applied in reactive dyes, azo dyes, organic dyes, etc., can solve problems such as high price and environmental pollution, and achieve no three-waste emissions, high color fixation rate, high exhaustion rate and color fixation. rate effect

Inactive Publication Date: 2016-05-11
SHENYANG RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because of its structure containing bromine, it will pollute the environment during production, and the price is relatively expensive

Method used

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  • Yellow active dye and preparation and application thereof
  • Yellow active dye and preparation and application thereof
  • Yellow active dye and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Prepare the following dyes:

[0052]

[0053] Take 2.81 parts of (4-β-hydroxyethyl sulfone sulfate) aniline and disperse in 20 parts of water, beat for 1 hour, then add 1.5 parts of 30% hydrochloric acid, cool down to 0-5 ° C, quickly add 0.7 parts of sodium nitrite, control The temperature is 0-5°C, and the diazotization reaction takes 2 hours. Afterwards, excess nitrous acid was eliminated, and it was added to the completely dissolved 1-(2,5-dichloro-4-sulfonic acid phenyl)-3-methyl-5-pyrazolone solution ( Disperse 3.23 parts of 1-(2,5-dichloro-4-sulfonic acid phenyl)-3-methyl-5-pyrazolone in 30 parts of water, adjust the pH of the solution to 7 with sodium carbonate, and make material dissolves). Stir vigorously, and adjust the pH of the reaction solution to 6 with sodium carbonate. Maintain the reaction temperature at 10-15° C., and the reaction pH at 6-7. After 2 hours of reaction, use HPLC to detect until the two components disappear. Then, adjust the pH to...

Embodiment 2-7

[0058]

[0059] With the method described in similar embodiment 1, select different diazo components (see table 1) to replace (4-beta-hydroxyethyl sulfone sulfate) aniline in embodiment 1, preparation method is the same as embodiment 1, Dyes (2)-dye (7) were obtained, and their specific structures, maximum absorption wavelengths, color absorption rates, and color fixation rates are shown in Table 2.

[0060] Table 1 prepares the diazo component of dye (2)-dye (7)

[0061] Dye number

Diazo component

2

(4-β-hydroxyethylsulfone sulfate)aniline-2-methoxy

3

(4-β-hydroxyethylsulfone sulfate)aniline-2-methoxy-5-methyl

4

(4-β-hydroxyethylsulfone sulfate)aniline-2,5-dimethoxy

5

(4-β-hydroxyethyl sulfone sulfate)aniline-2-sulfonic acid

6

(3-β-Hydroxyethylsulfone Sulfate)aniline

7

(5-β-hydroxyethylsulfone sulfate)aniline-2-methoxy

[0062] Reactive dyes prepared by different diazo components in table...

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PUM

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Abstract

The invention belongs to the field of fine chemical engineering, and relates to a yellow active dye and preparation and an application thereof. The yellow active dye is a compound having the structure represented by the following general formula (I), wherein in the formula, all groups are defined in the specification. The yellow active dye is mainly used for dyeing and printing of protein fibers, synthetic fibers, cellulose fibers and blended fabrics. After dyeing, a fabric has the advantages of gorgeous color and luster, good level-dyeing properties, tone reappearance, and high complete absorption ratio and color fixing rate. The yellow active dye can satisfy environment and ecological protection market requirements on dyes.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to a yellow reactive dye and its preparation and application. Background technique [0002] Polyamide fiber (commonly known as nylon) is the third largest textile fiber after polyester and cotton fiber, and is also the second largest variety of synthetic fiber, accounting for 22% to 30% of synthetic fiber. Generally, the dyes used for dyeing polyamide fibers are mainly disperse dyes, acid dyes and metal complex dyes. The fabrics dyed with these types of dyes have poor fastness, poor shade, and pollute the environment. After entering the 21st century, due to the constraints of the ecological environment, the requirements for the dyeing rate, color fixation rate, color fastness performance and dyeing wastewater of dyes are getting higher and higher. The above dyes can no longer meet the needs of the development of the times, affecting the polyamide Fiber development. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B62/51D06P1/384D06P3/24
Inventor 徐飒英尚庆梅宋志承范中伟
Owner SHENYANG RES INST OF CHEM IND
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