A kind of composite bright red reactive dye and its preparation method and application

A reactive dye, composite technology, applied in reactive dyes, dyeing methods, organic dyes, etc., to reduce the pressure of production and environmental protection, improve solubility and color fixation rate, and good stability.

Active Publication Date: 2020-07-14
HUBEI HUALI DYESTUFF INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although reactive dyes have the characteristics of bright color and complete varieties, it is more and more difficult to meet the requirements of beauty lovers in today's developed economy and outstanding individuality. In order to catch up with the pace of the times, the dye industry must constantly improve itself. In addition to strengthening environmental protection In order to protect the protection of the product, it is necessary to improve the application performance indicators such as color fixation rate, level dyeing property, and wet fastness of the product, and at the same time further reduce the production cost. The process needs to be continuously improved to make the chromatographic color richer, so as to meet the needs of the modern market.

Method used

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  • A kind of composite bright red reactive dye and its preparation method and application
  • A kind of composite bright red reactive dye and its preparation method and application
  • A kind of composite bright red reactive dye and its preparation method and application

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preparation example Construction

[0038] The preparation method of formula (2) compound is as follows:

[0039] ①Beat the H acid, adjust the pH to 7.0 with liquid caustic soda until dissolved, add it to the cyanuric chloride beating liquid for a condensation reaction, adjust the pH to 3.5-4.0, and react for 2 hours to obtain a condensation liquid for use.

[0040] ②Add the meta-ester to the above mixture solution, raise the temperature to T=40°C, maintain the pH=3.5-4.0, and react for 4 hours to obtain the secondary condensation liquid.

[0041] ③Add p-aminobenzenesulfonic acid and hydrochloric acid with water and ice for 30 minutes, add 30% sodium nitrite aqueous solution, maintain the temperature T=0~5°C, and use sulfamic acid to eliminate excess sodium nitrite after reacting for 1 hour; The potassium iodide test paper is colorless, and the Congo red test paper is blue. When the end point is reached, the diazo solution is obtained.

[0042] ④Add the above-mentioned diazo solution into the secondary shrinkag...

Embodiment 1

[0046] 75g of the compound of formula (1) and 25g of the compound of formula (2) were fully mechanically mixed to obtain a composite bright red reactive dye.

[0047] Take 4g of the composite bright red reactive dye prepared above and dissolve it fully with an appropriate amount of water, then set the volume in a 500ml volumetric flask, draw 10ml of the dye solution and mix it with 50ml of water, then add 4g of cotton cloth and 1.8g of sodium sulfate , raise the temperature to 60°C at a rate of 1°C / min, keep it for 30 minutes, add 1g of sodium carbonate, keep it at 60°C for 30 minutes, then take out the dyed cotton cloth and boil it with non-ionic detergent boiling soap for 15 minutes, After cross-washing in cold water and hot water, and drying at about 70°C, it can obtain a red color with high dyeing strength, good level dyeing property, good reproducibility, bright color and good resistance to oxygen bleaching.

Embodiment 2

[0049] 50g of the compound of formula (1) and 50g of the compound of formula (2) are fully mechanically mixed to obtain a composite bright red reactive dye.

[0050]Take 4g of the composite bright red reactive dye prepared above and dissolve it fully with an appropriate amount of water, then set the volume in a 500ml volumetric flask, draw 10ml of the dye solution and mix it with 50ml of water, then add 4g of cotton cloth and 1.8g of sodium sulfate , raise the temperature to 60°C at a rate of 1°C / min, keep it for 30 minutes, add 1g of sodium carbonate, keep it at 60°C for 30 minutes, then take out the dyed cotton cloth and boil it with non-ionic detergent boiling soap for 15 minutes, After cross-washing in cold water and hot water, and drying at about 70°C, it can obtain a red color with high dyeing strength, good level dyeing property, good reproducibility, bright color and good resistance to oxygen bleaching.

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Abstract

The invention provides a composite bright red reactive dye, which is prepared from the following components in parts by weight: 25-75 parts of compound of formula (1) and 25-75 parts of compound of formula (2), wherein the formula is shown in the description. The composite bright red reactive dye is prepared by mixing a compound of formula (1) and a compound of formula (2) which are isomers of each other, the solubility and the color fixing rate of the dye are improved by utilizing the compound synergistic principle, the problems of low solubility of a single compound of formula (1), low solidcontent of a semi-finished product and overhigh drying cost of the dye of the compound of formula (1) are overcome; meanwhile, the concentration of the dye is increased through concentration, the cleaning water in the dye drying process is reduced, and the production environment-friendly pressure of the product is reduced.

Description

technical field [0001] The invention belongs to the technical field of reactive dyes, in particular to a composite bright red reactive dye and its preparation method and application. Background technique [0002] Reactive dyes have wide color spectrum, bright color, excellent performance and strong applicability. Their hue and performance basically meet the requirements of the market for fiber and clothing. Textiles dyed with azo, sulfur and vat dyes are also gradually dyed with reactive dyes. In addition, the application of reactive dyes on protein fibers, synthetic fibers and some new fibers such as soybeans and milk protein fibers is also expanding. [0003] Although reactive dyes have the characteristics of bright color and complete varieties, it is more and more difficult to meet the requirements of beauty lovers in today's developed economy and outstanding individuality. In order to catch up with the pace of the times, the dye industry must constantly improve itself. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/22C09B62/085D06P1/382D06P3/66
Inventor 崔孟元朱训杰熊建平刘嵩
Owner HUBEI HUALI DYESTUFF INDAL
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