Composite active black dye for cellulose dyeing

A technology of cellulose fiber and reactive black, which is applied in dyeing, organic dyes, textiles and papermaking, etc. It can solve the problems of quality disputes, color blooms and stains between dye suppliers and buyers, and achieve excellent color fastness and high level dyeing The effect of maintaining stability

Inactive Publication Date: 2006-03-15
ZHEJIANG SHUNLONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the frequent occurrence of color flowers and stains in the dyeing process of users, quality disputes between dye suppliers and buyers frequently occur

Method used

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  • Composite active black dye for cellulose dyeing
  • Composite active black dye for cellulose dyeing
  • Composite active black dye for cellulose dyeing

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037] 280kg of 4-(β hydroxyethyl sulfone) sulfate aniline, add appropriate amount of water and ice cubes, under high-speed stirring, add 90kg of industrial hydrochloric acid, then under good stirring, add the concentration by weight of 70kg of pure product It is a 30% sodium nitrite aqueous solution, and the reaction liquid is kept for diazotization reaction against Congo red test paper blue and starch potassium iodide test paper blue at 0-5° C. for 2-3 hours. Then, 175 kg of H acid was added to keep the pH ≤ 2, and the acidic coupling reaction was carried out at 5-8° C. for 3-5 hours. Below 20°C, add soda to adjust the pH of the reactant to 6.5-7.0, then carry out alkaline coupling for 2-3 hours to reach the end of the reaction, and obtain about 600 kg of navy blue dye of structural formula (4).

example 2

[0039] After diazotization of 500kg of 4-(βhydroxyethylsulfone)sulfate aniline o-sulfonic acid at 0~5℃, couple with 600kg of acetylated J acid, adjust the pH to 5.5~6.5 with soda ash, and the temperature is 10℃~ 15 ℃ reacted 5 hours to end point, and spray drying obtains structural formula (8) orange reactive dye (λ max = 480nm) 1300kg.

example 3

[0041] Diazotize 400kg of 2-methoxy 4-(βhydroxyethylsulfone)sulfate aniline at 0-5°C, add 300kg of N-methyl J acid after adding reaction for 4 hours, and use soda ash to control pH=5~5 6. After controlling the temperature of 10℃~15℃ for 3~5 hours, the end point of the reaction is reached. Obtain structural formula (18) orange reactive dyes about (λ max = 490m) 800kg.

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PUM

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Abstract

A composite active black dye for cellulose fibre dyeing consists of dye A 60-80wt%, dye B 15-40wt% and assistants residue. It has excellent fixation degree, level-dyeing property and selectivity for cellulose fibre, no poisonous and harmful substances and no environmental pollution.

Description

technical field [0001] The invention relates to a composite reactive black dye, in particular to a composite reactive black dye for cellulose fiber dyeing. Background technique [0002] Active Black 5 is currently on the market # (Color Index Reactive Black B5) and reactive orange (Color Index Reactive Orange 82) composite reactive black dyes still occupy a considerable market share due to their low price and high blackness. However, due to the frequent occurrence of color flowers and stains in the dyeing process of users, quality disputes between dye suppliers and buyers frequently occur. Both parties are looking for a solution. The dyeing factory is committed to improving its dyeing process to solve the quality problem of dyeing, which increases the cost of use; while the manufacturer is constantly looking for its substitutes to find the fundamental Solutions. Its functions are continuously improved to improve the grade of the product, reduce the user's cost of use, and...

Claims

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Application Information

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IPC IPC(8): C09B67/24D06P1/38D06P3/60
Inventor 朱海根杨健何栋澄金伟龙班辉刘金榜
Owner ZHEJIANG SHUNLONG CHEM
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