Black reactive dye composition

A technology of reactive dyes and compositions, which can be used in organic dyes, dyeing methods, textiles and papermaking, etc., and can solve problems such as unsatisfactory dyeing properties of dyes

Active Publication Date: 2013-05-01
ZHEJIANG RUIHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the dyeing performance of the dye in the published patent application CN101775235A still cannot meet the increasing demand of the market

Method used

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  • Black reactive dye composition
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  • Black reactive dye composition

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0069] Weigh 30.35 g of para-ester (i.e., p-(β-sulfate ethyl sulfone) aniline) in a 500-ml beaker, add an appropriate amount of water and ice for ice grinding and beating, and add 12.72 g after half an hour. The concentration is 31 % (w / w) hydrochloric acid, and then add 30% (w / w) concentration of sodium nitrite solution (containing 7.46 g of sodium nitrite) dropwise to the para-ester solution, and control the temperature to 0-5 °C for reconditioning. Nitriding. After the para-ester diazotization is completed, a diazo liquid is obtained, and 32.86 grams of H acid are weighed and added to the above-mentioned diazo liquid, and the temperature is controlled at 5 to 10° C. The reaction is stirred for 10 hours, and then the pH is adjusted to 2 to 2.5 with baking soda to make it acidic. The coupling reaction is complete, and the acidic coupling is obtained.

[0070] Weigh 17.82 grams of anthranilic acid in a 250 ml beaker, add an appropriate amount of water and ice for ice grinding...

preparation example 2

[0075] Weigh 30.35 g of para-ester (i.e., p-(β-sulfate ethyl sulfone) aniline) in a 500-ml beaker, add an appropriate amount of water and ice for ice grinding and beating, and add liquid caustic soda after half an hour to adjust the pH to 12. Control the temperature at 0-5°C, add 12.72 grams of hydrochloric acid with a concentration of 31% (w / w) after the pH is stable for one hour, and then add a 30% (w / w) concentration of sodium nitrite solution (containing sodium nitrite). 7.46 g) was added dropwise to the para-ester solution, and the temperature was controlled at 0-5 °C for diazotization. After the para-ester diazotization is completed, a diazo liquid is obtained, and 32.86 grams of H acid are weighed and added to the above-mentioned diazo liquid, and the temperature is controlled at 5 to 10° C. The reaction is stirred for 10 hours, and then the pH is adjusted to 2 to 2.5 with baking soda to make it acidic. The coupling reaction is complete, and the acidic coupling is obtai...

preparation example 3

[0081] Weigh 29.51 g of meta-ester (i.e., m-(β-sulfate ethylsulfone) aniline) in a 500-ml beaker, add an appropriate amount of water and ice for ice grinding and beating, and add 12.36 g after half an hour. The concentration is 31 % (w / w) hydrochloric acid, and then add 30% (w / w) concentration of sodium nitrite solution (containing 7.25 g of sodium nitrite) dropwise to the meta-ester solution, and control the temperature to 0-5 °C for reconditioning. Nitriding. After the meta-ester diazo is completed, a diazo liquid is obtained, 31.9 grams of H acid are weighed and added to the above-mentioned diazo liquid, the temperature is controlled at 15 to 20 ° C and the reaction is stirred for 8 hours, and then the pH is adjusted to 3 to 3.5 to make the acid coupling reaction complete. Acid couples.

[0082] In addition, weigh 25.3 grams of aniline-2,5-disulfonic acid in a 250-ml beaker, add an appropriate amount of water and ice for ice grinding and beating, and add 5.8 grams of hydro...

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PUM

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Abstract

A black reactive dye composition is characterized in that: based on the total weight, the black reactive dye composition comprises 30-90wt% of component A, 0-36wt% of component B, 0-30wt% of component C, 0-25wt% of component D and 0-45wt% of auxiliary agent, wherein the component A comprises at least one of compounds shown in formula (I), the component B comprises at least one of compounds shown in formula (II) or compounds shown in formula (III), the component C comprises at least one of compounds shown in formula (IV), and the component D comprises at least one of compounds shown in formula (V) or formula (VI). The black reactive dye composition is suitable for printing and dyeing of cotton, artificial cotton, hemp, regenerated fiber or textiles thereof, or printing and dyeing of polyamide fiber, cellulose fiber, protein fiber or textiles thereof, is particularly suitable for printing and embossing of the artificial cotton, has excellent wash fastness and perspiration fastness and can ensure a good hand feel of textiles.

Description

technical field [0001] The present invention relates to a kind of printing and dyeing suitable for cotton, rayon, hemp, regenerated fibers or their textiles, or the printing and dyeing of polyamide fibers, cellulose fibers, protein fibers or their textiles, especially suitable for rayon printing. Black reactive dye composition. Background technique [0002] With the development of fiber varieties and dyeing technology, the dye market has higher and higher requirements for the dyeing performance of reactive dyes, which also promotes the development of reactive dyes to improve application performance. The development of reactive black dyes has always been a hot spot in the dye industry, because the output of reactive black dyes accounts for more than half of the total output of reactive dyes. Among the existing reactive dye compositions, there is a lack of a black reactive dye that is suitable for rayon printing, has excellent dyeing properties, and is particularly excellent ...

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 杨国旗柳长江陈锋李家琪
Owner ZHEJIANG RUIHUA CHEM
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