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Blue k-type reactive dye and preparation method thereof

A reactive dye, K-type technology, applied in reactive dyes, dyeing methods, organic dyes, etc., can solve the problems of poor solubility of Indigoidine, poor oxidation resistance and heat resistance, difficult water medium dyeing, etc., to improve sun resistance Fastness, improvement of oxidation resistance and heat resistance stability, excellent color fastness effect

Active Publication Date: 2019-08-16
浙江理工大学上虞工业技术研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are two primary amino groups (-NH 2 ), oxidation resistance and heat resistance are poor, and the blue color will soon fade under boiling conditions, and it will be oxidized to brown substance
In addition, Indigoidine has poor solubility in solvents, only has small solubility in DMF and DMSO, and it is difficult to use aqueous media to achieve dyeing

Method used

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  • Blue k-type reactive dye and preparation method thereof
  • Blue k-type reactive dye and preparation method thereof
  • Blue k-type reactive dye and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] Embodiment 1, a kind of preparation method of blue K type reactive dye, carry out following steps successively:

[0033] 1), after grinding the Indigoidine dye finely with a mortar (can pass through a 300-mesh sieve), add 0.01mol of Indigoidine dye finely ground and 20mL water in a three-necked flask equipped with a stirrer and a thermometer, and stir to form a dispersion (dye Suspension), stand-by;

[0034] 2) Mix and dissolve 0.02mol of cyanuric chloride and p-aminobenzenesulfonic acid condensate with 20ml of water, then add to the dye dispersion, then add 0.01mol of potassium carbonate as an acid-binding agent, and react at 40°C for 6 hours;

[0035] The condensation product of described cyanuric chloride and p-aminobenzenesulfonic acid is

[0036] 3), after completion of the reaction, add 5% (mass %) HCl solution in the reaction solution to adjust the pH to 1, so that the blue product is separated out; after filtering, the filter cake is pickled (concentration is...

Embodiment 2

[0041] Embodiment 2, a kind of blue K type reactive dye and preparation method thereof, carry out following steps successively:

[0042] 1) After finely grinding the Indigoidine dye with a mortar, add 0.01 mol of finely ground Indigoidine dye and 20 mL of water into a three-neck flask equipped with a stirrer and a thermometer, and stir to form a dispersion liquid, which is ready for use;

[0043] 2) Mix and dissolve 0.02mol of cyanuric chloride and m-aminobenzenesulfonic acid condensate with 20ml of water, then add to the dye dispersion, then add 0.01mol of potassium carbonate as an acid-binding agent, and react at 60°C for 1 hour;

[0044] The condensation product of cyanuric chloride and m-aminobenzenesulfonic acid is

[0045]3), after completion of the reaction, add 5% HCl solution in the reaction solution to adjust the pH to 1, so that the blue product is separated out; The amount of time is 50ml, acid wash 3 times altogether) and dry (dry to constant weight at 50 ℃), o...

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Abstract

The invention discloses a blue K type active dye. The structure general formula of the blue K type active dye is disclosed in the invention. The invention also discloses a preparation method. The preparation method comprises a step of reaction of Indigoidine dye with a condensation product of cyanuric chloride and aminobezene solfonic acid. The blue K type active dye is capable of realizing high efficiency dyeing of cotton fiber in water system, dye oxidation resistance and heat resistance are improved, and the colour fasteness to sunlight of the blue K type active dye on cotton fiber is improved.

Description

technical field [0001] The invention relates to a blue K-type reactive dye and a preparation method thereof. Background technique [0002] In 2015, a group of researchers led by Dr. Jixun Zhan of Utah State University in the United States used E. coli to produce an indigo dye called Indigoidine, and achieved mass production. Indigoidine dye has a pure blue hue and can be used as a coloring agent in food, beverages or cosmetics after further purification. The blue natural dye has attracted more and more attention in the textile industry due to its non-toxic, harmless and non-polluting characteristics. However, there are two primary amino groups (-NH 2 ), the oxidation resistance and heat resistance are poor, and the blue color will soon fade under boiling conditions, and it will be oxidized into a brown substance. In addition, Indigoidine has poor solubility in solvents, and only has small solubility in DMF and DMSO, so it is difficult to achieve dyeing in aqueous media. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/04D06P1/382D06P3/66
CPCC09B62/04D06P1/382D06P3/663
Inventor 崔志华王星
Owner 浙江理工大学上虞工业技术研究院有限公司
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