Composite black active dye

A reactive dye and black technology, which is applied in the field of composite black reactive dyes, can solve the problems of large difference in fiber affinity, large difference in hydrophilicity and lipophilicity, easy precipitation, etc.

Active Publication Date: 2012-02-22
ZHEJIANG YIDE CHEM
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

In view of the fact that the current conventional dyes are not stable enough when pad dyeing sensitive colors such as coffee, khaki, and brown, and the color difference between before and after is large
The dyeing properties of compound dyes are not very compatible, and the hydrophilicity and lipophilicity between them are very different, and the directness and water solubility of the

Method used

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  • Composite black active dye
  • Composite black active dye
  • Composite black active dye

Examples

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Embodiment 1

[0031] Step 1: Synthesis of Yellow Reactive Dye 101

[0032] Disperse 31.6g of K acid at a temperature of 10-12°C for 1 hour, then add hydrochloric acid and sodium nitrite as diazonium, and then conduct a coupling reaction with 10.4g of metaurea at a temperature of 10-15°C and maintain it with baking soda PH = 5.3-5.5, synthesize the chromophore, and then carry out a shrinkage reaction between the chromogen and 10g cyanuric chloride at a temperature of 0-5°C, and then add 16.5g para-ester for a double shrinkage reaction after the end point of the shrinkage reaction is reached. Temperature 41-43°C, use baking soda to maintain PH = 6.0-6.2, and keep the PH temperature for 8-10 hours to synthesize reactive dyes of formula (101), and spray all the obtained liquid to obtain about 77.8g of golden yellow dry product .

[0033] Step 2: Synthesis of blue reactive dye 201:

[0034] Put 36.9g of cyanuric chloride and 500g of ice water into the ice mill for beating, and add 56.2g of 3-β...

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Abstract

The present invention discloses a composite black active dye. The dye is prepared by mixing three active dyes of A, B and C, wherein a mass percentage ratio of the dye A to the dye B to the dye C is 3-5:7-10:85-90. According to the present invention, a hyperchromic effect due to the combination of the three dyes is adopted to improve the color emissivity and the dyeing property of the commercial active dye, increase the dye uptake and the color fixing rate of the dye, and improve other application properties of the dye; the good level-dyeing property is realized; the uniformity of the color before and after pad dyeing is ensured; the dye is especially applicable for exhaust dyeing of cellulose fiber, protein fiber and polyamide fiber.

Description

technical field [0001] The invention relates to a composite black reactive dye used for exhaust dyeing, tie-dyeing-steaming, tie-dyeing-baking and tie-dyeing-jet dyeing of cellulose fibers, protein fibers and polyamide fibers. Background technique [0002] As a representative of the modern dye industry, reactive dyes have developed rapidly in the past 50 years. Black dye is the most widely used and most productive color in dyes. At present, the annual output of reactive dyes for cellulose fibers in the world is about 200,000 tons, accounting for about 20% of the world's annual output of dyes. In view of the fact that the current conventional dyes are not stable enough when pad dyeing sensitive colors such as coffee, khaki, and brown, and the color difference between before and after is relatively large. The dyeing properties of compound dyes are not very compatible, and the hydrophilicity and lipophilicity between them are very different, and the directness and water solub...

Claims

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Application Information

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IPC IPC(8): C09B67/22C09B67/24D06P1/38D06P3/66D06P3/10D06P3/24
Inventor 王高峰孟胜锋秦杰峰贾建洪蒋志平
Owner ZHEJIANG YIDE CHEM
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