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A kind of preparation method and application of three reactive group blue dyes

A technology of blue dye and three reactive groups, applied in the field of reactive dye preparation and application, can solve the problems of low diazonium salt conversion rate, low acid azo liquid phase value, affecting dye quality and application performance, etc., and achieve dye yield And the effect of quality improvement, high color fastness, dye uptake and color fastness improvement

Active Publication Date: 2021-03-05
ZHEJIANG JINGGUANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the diazotization process of this method, due to the viscous material, the conversion rate of diazonium salt is low, and the acid-couple liquid phase value is low, the dark blue dye with more by-products is finally obtained, which affects the quality and application performance of the dye.

Method used

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  • A kind of preparation method and application of three reactive group blue dyes
  • A kind of preparation method and application of three reactive group blue dyes
  • A kind of preparation method and application of three reactive group blue dyes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) One condensation

[0041] Weigh 20g of cyanuric chloride and 0.3g of dispersant MF in a 1000mL beaker, beat in an ice bath for 0.5h, add 30.45g of para-ester dry powder in percent, add a small amount of dispersant MF and crushed ice, continue mixing and beating for 1 hour, After the beating is completed, the pH is about 1.0, and the pH of the material is adjusted to 2.8-3.2 with a mixed alkali for about 1 hour, and the temperature is kept at 4-9°C, and the pH is 2.8-3.2 to react to the end.

[0042] (2) Secondary condensation

[0043] Once the end point is reached, add 22.3% solid bismuth and sodium bicarbonate to adjust the pH to 5-5.5, raise the temperature to 20-25°C, and keep the pH at 5-5.5 for 3-4 hours until the end point is reached.

[0044] (3) Diazotization reaction of dicondensates

[0045] After the end point of the second shrinkage is reached, cool down in an ice bath to below 5°C, add 1 gram of dispersant NNO, stir for 5 minutes, add hydrochloric aci...

Embodiment 2

[0053] (1) One condensation

[0054] Weigh 20g of cyanuric chloride and 0.3g of dispersant MF in a 1000mL beaker, beat in an ice bath for 0.5h, add 30.6g of para-ester dry powder in percent, add a small amount of dispersant MF and crushed ice, continue mixing and beating for 1 hour, After the beating is completed, the pH is about 1.0, and the pH of the material is adjusted to 2.8-3.2 with a mixed alkali for about 1 hour, and the temperature is kept at 4-9°C, and the pH is 2.8-3.2 to react to the end.

[0055] (2) Secondary condensation

[0056] Once the end point is reached, add 22.3% solid bismuth and sodium bicarbonate to adjust the pH to 5-5.5, raise the temperature to 20-25°C, and keep the pH at 5-5.5 for 3-4 hours until the end point is reached.

[0057] (3) Diazotization reaction of dicondensates

[0058] After the end point of the second shrinkage is reached, cool down in an ice bath to below 5°C, add 1 gram of dispersant NNO, stir for 5 minutes, add hydrochloric acid...

Embodiment 3

[0066] (1) One condensation

[0067] Weigh 20g of cyanuric chloride and 0.3g of dispersant MF in a 1000mL beaker, beat in an ice bath for 0.5h, add 30.45g of para-ester dry powder in percent, add a small amount of dispersant MF and crushed ice, continue mixing and beating for 1 hour, After the beating is completed, the pH is about 1.0, and the pH of the material is adjusted to 2.8-3.2 with a mixed alkali for about 1 hour, and the temperature is kept at 4-9°C, and the pH is 2.8-3.2 to react to the end.

[0068] (2) Secondary condensation

[0069] Once the end point is reached, add 22.3% solid bismuth and sodium bicarbonate to adjust the pH to 5-5.5, raise the temperature to 20-25°C, and keep the pH 5-5.5 for 3-4 hours until the end point is reached.

[0070] (3) Diazotization reaction of dicondensates

[0071] After the end point of the second shrinkage is reached, cool down in an ice bath to below 5°C, add 1.4 g of dispersant NNO, stir for 5 minutes, add hydrochloric acid an...

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Abstract

The invention discloses a preparation method of a three-active group blue dye: adding cyanuric chloride and a dispersant to an ice-water mixture to obtain a beating liquid; adding solid para-ester to the beating liquid, adding mixed alkali after beating Alkali adjustment of the solution, a condensation reaction to obtain a condensate; add solid bismuth to the first condensate, carry out condensation reaction, and obtain a condensate; reduce the temperature of the condensate, add additives, and then add hydrochloric acid and sodium nitrite to make weight Nitrogen to obtain diazo solution; Dicondensed diazonium solution is coupled with H acid solution to obtain acid couple solution; Add hydrochloric acid and sodium nitrite to 6-β-ethylsulfone-sulfuric acid ester-2-naphthylamine-1-sulfonic acid Carry out diazotization reaction to obtain diazonium salt of 6-β-ethylsulfone sulfate-2-naphthylamine-1-sulfonate, add it to acid couple solution, and carry out alkaline coupling reaction to obtain reactive blue dye. The dye uptake rate and color fastness of the blue dye prepared by the invention are significantly improved, and the color light is bright and full after blending with the red dye, and the application performance index is obviously improved.

Description

technical field [0001] The invention relates to the field of preparation and application of reactive dyes, in particular to a preparation method and application of a three-reactive group blue dye. Background technique [0002] Reactive dyes have the advantages of bright color, excellent fastness, low production cost, complete chromatogram, convenient use and strong applicability, and become the second largest category of dyes after disperse dyes, but reactive dyes are also exposed in their applications There are some disadvantages, such as low utilization rate of dyes, a large amount of electrolytes need to be added during dyeing, etc. These disadvantages have become the bottleneck of the development of reactive dyes. [0003] The research and development of reactive dyes is developing towards the "refinement direction", which is reflected in: the development of multi-reactive dyes, the commercial compounding and synergy and the development of new formulations, so as to impr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/513C09B67/22C09B67/36C09B67/24D06P1/384
CPCC09B62/513C09B67/0047C09B67/0072C09B67/0079D06P1/384
Inventor 王国林赵强
Owner ZHEJIANG JINGGUANG IND
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