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Composite active black dye with high levelling property

A reactive black and composite technology, applied in the direction of organic dyes, etc., can solve the problems of fabrics that cannot be reused after stripping, poor levelness and dye migration, and easy occurrence of color flowers, and achieves high dye dischargeability, high The effect of levelness and high jet blackness

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

[0003] 1. Due to the different chemical structures of the two dyes, one end of the orange (Color Index ReactiveOrange 82) molecule is a dichloro-s-triazine active group, which can dye cellulose fibers at room temperature, and the other end of the molecule is vinyl sulfone active base; and by reactive black 5 # (Color Index Reactive Black5) is a bisvinyl sulfone active group and can only be dyed at medium temperature
[0004] 2. There is a big difference in the directness and alkali sensitivity of the two dyes, the dyeing is not synchronized, and the level dyeing and migration are very poor, making it very easy to cause color flowers in dyeing
[0005] 3. Because the reduced product of Orange (Color Index Reactive Orange 82) contains active groups, it can continue to dye the fiber, so that the dyed fabric cannot be reused after stripping, resulting in irreparable economic losses for users

Method used

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  • Composite active black dye with high levelling property
  • Composite active black dye with high levelling property
  • Composite active black dye with high levelling property

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0041] 280kg of para-esterification, add appropriate amount of water and ice cubes, under high-speed stirring, add 90kg of industrial hydrochloric acid, then under good stirring, add 70kg of pure product with a weight percentage concentration of 30% sodium nitrite aqueous solution , keeping the reaction liquid for diazotization reaction on Congo red test paper blue, starch potassium iodide test paper light blue, 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. Then, below 20°C, quickly add soda to adjust the pH of the reactant to 6.5-7, and carry out alkaline coupling for 2-3 hours to complete the reaction. Obtain about 600kg of dye A reactive black KN-B compound.

example 2

[0043]280kg of para-esterification, add appropriate amount of water and ice cubes, under high-speed stirring, add 90kg of industrial hydrochloric acid, and then under good stirring, add 70kg of sodium nitrite aqueous solution to keep the reaction liquid against Congo red test paper blue, starch potassium iodide The test paper is slightly blue, and the diazotization reaction is carried out at 0-5°C for 2-3 hours. Then, add 115 kg of m-diaminobenzenesulfonic acid, keep the pH ≤ 2, and carry out acidic coupling reaction at 5-8° C. for 2-4 hours. Then, below 20°C, quickly add soda to adjust the pH of the reactant to 6.5-7, and then carry out alkaline coupling for 2-4 hours to complete the reaction. Obtain dye B reactive yellow KN-RR about 450kg.

example 3

[0045] 140kg of para-esterification, add appropriate amount of water and ice cubes, under high-speed stirring, add 45kg of industrial hydrochloric acid, then under good stirring, add 35kg (pure product) sodium nitrite aqueous solution to keep the reaction solution against Congo red The test paper is blue, the starch potassium iodide test paper is blue, and the diazotization reaction is carried out at 0-5°C for 2-3 hours. Then, add 110kg of 1-amino-4-naphthalenesulfonic acid, keep the pH≤2, and carry out acidic coupling reaction at 5-8°C for 2-4 hours. Then, below 20°C, quickly add soda to adjust the pH of the reactant to 6.5-7.0 to complete the reaction, and obtain about 320kg of dye C reactive orange KN-R.

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Abstract

A composite active black dye with high level-dyeing property consists of dye A 40-70wt%, dye B 10-30wt%, dye C 10-35wt% and assistants residue. It has no poisonous and harmful substances and no environmental pollution. It can be used for cellulose fibre materials and fibrillia.

Description

technical field [0001] The invention relates to a composite reactive black dye, in particular to a composite reactive black dye with high level dyeing property for cellulose fibers. Background technique [0002] So far, the monochromatic black varieties in reactive dyes have limited their development because of their poor dyeing depth and narrow application range. Reactive Black 5 # (Color Index Reactive Black 5) is a navy blue tone. In the 1980s, Koreans combined it with orange to create a composite reactive black dye. # (Color Index Ractive Black 5) has expanded its application range, and its composite reactive black dye has become the product with the largest market share (about 50%) among reactive dyes. However, through the test of practice, by active black 5 # (Color Index Reactive Black.5) and orange (Color Index Reactive Orange 82) composite reactive black dye, there are three defects: [0003] 1. Due to the different chemical structure types of the two dyes, one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/24C09B67/36
Inventor 朱海根何栋澄金伟龙班辉刘金榜
Owner ZHEJIANG SHUNLONG CHEM
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