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Reactive dye red as well as preparation method and application thereof

A technology of reactive dyes and reaction liquids, applied in the field of dyes, can solve problems such as affecting product quality and efficiency, color pattern and tank difference, and lengthy process.

Active Publication Date: 2021-03-12
苏州澳缘盛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the same color is good and the fastness is high, the process is lengthy and the energy consumption is too much, which is not conducive to energy saving, emission reduction and clean production of printing and dyeing enterprises, and as the processing time prolongs, there may be problems of color flower and cylinder difference in production , affecting product quality and efficiency
[0003] In order to solve these problems, many factories are exploring one-bath one-step dyeing of polyester and cotton. Dyeing at around ℃, not suitable for one-bath one-step dyeing with disperse dyes

Method used

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  • Reactive dye red as well as preparation method and application thereof
  • Reactive dye red as well as preparation method and application thereof
  • Reactive dye red as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The reactive dye red provided by this embodiment is prepared by the following method:

[0059] (1) will Add to crushed ice and water and stir, then add Then add sodium bicarbonate to adjust the pH value to 2.0-2.5, react at 5-10°C for 3.5h to obtain the first mixed solution, wherein, and The feeding molar ratio is 1:0.99;

[0060] (2) Will Add it into water and crushed ice and stir, keep the temperature at 0-5°C, add hydrochloric acid and then add sodium nitrite to react for 1.5h to obtain the second mixed solution, wherein, The molar ratio of HCl and sodium nitrite is 1:1.0:1.01;

[0061] (3) Add the second mixed solution obtained in step (2) to the first mixed solution obtained in step (1), then add sodium bicarbonate to adjust the pH value to 5.5-6.0, and react at 10-15°C for 5.5h to obtain The third mixed solution, wherein, the feeding of the first mixed solution and the second mixed solution according to and The feeding molar ratio is 1:0.99 for fee...

Embodiment 2

[0068] The reactive dye red provided by this embodiment is prepared by the following method:

[0069] (1) will Add to crushed ice and water and stir to Add, then add sodium bicarbonate to adjust the pH value to 2.0-2.5, and react at 5-10°C for 3h to obtain the first mixed solution, wherein, and The feeding molar ratio is 1:0.99;

[0070] (2) Will Add it into water and crushed ice and stir, keep the temperature at 5-8°C, add hydrochloric acid and then add sodium nitrite to react for 1.5h to obtain the second mixed solution, wherein The molar ratio of HCl and sodium nitrite is 1:1.0:1.01;

[0071] (3) Add the second mixed solution obtained in step (2) to the first mixed solution obtained in step (1), then add sodium bicarbonate to adjust the pH value to 5.5-6.0, and react at 10-15°C for 5 hours to obtain the first mixed solution Three mixed solutions, wherein the feeding of the first mixed solution and the second mixed solution is according to and The feeding mol...

Embodiment 3

[0078] The reactive dye red provided by this embodiment is prepared by the following method:

[0079] (1) will Add to crushed ice and water and stir, then add Then add sodium bicarbonate to adjust the pH value to 2.0-2.5, react at 5-10°C for 4 hours to obtain the first mixed solution, wherein, and The feeding molar ratio is 1:0.99;

[0080] (2) Will Add it into water and crushed ice and stir, keep the temperature at 0-5°C, add hydrochloric acid and then add sodium nitrite to react for 1.5h to obtain the second mixed solution, wherein, The molar ratio of HCl and sodium nitrite is 1:1.0:1.01;

[0081] (3) Add the second mixed solution obtained in step (2) to the first mixed solution obtained in step (1), then add sodium bicarbonate to adjust the pH value to 5.5-6.0, and react at 10-15°C for 6 hours to obtain the first mixed solution Three mixed solutions, wherein the feeding of the first mixed solution and the second mixed solution is according to and The feeding...

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Abstract

The invention relates to reactive dye red as well as a preparation method and application thereof, and the compound structure of the reactive dye red is shown as a general formula (I). The reactive dye provided by the invention has relatively high reactivity, good color fixing capability and good dyeing capability, and during dyeing, soda ash does not need to be added for color fixing, so that theuse of soda ash is avoided. Meanwhile, the reactive dye also has high-temperature resistance, can be matched with a disperse dye for use, and can be used for simultaneously dyeing T / R or T / C blendedfabric products at the temperature higher than 100 DEG C, so that a one-bath dyeing process is realized, the dyeing process is simplified, the dyeing time is shortened, the discharge capacity is greatly reduced, and the labor cost and the energy consumption are reduced.

Description

technical field [0001] The invention belongs to the technical field of dyes, and in particular relates to a reactive dye red and its preparation method and application. Background technique [0002] When polyester-cotton blended fabrics currently on the market are dyed, the commonly used dyeing method is the two-bath method, that is, the fabric is first dyed with disperse dyes, washed, and then dyed with reactive dyes and washed. Although the same color is good and the fastness is high, the process is lengthy and the energy consumption is too much, which is not conducive to energy saving, emission reduction and clean production of printing and dyeing enterprises, and as the processing time prolongs, there may be problems of color flower and cylinder difference in production , affecting product quality and efficiency. [0003] In order to solve these problems, many factories are exploring the one-bath one-step dyeing method of polyester and cotton. However, the existing reac...

Claims

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Application Information

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IPC IPC(8): C09B62/513C09B62/09C07D401/14D06P1/384D06P1/382D06P3/66
CPCC09B62/513C09B62/09C07D401/14D06P1/384D06P1/382D06P3/663D06P3/666
Inventor 陆再宏陆海英王高峰庄磊
Owner 苏州澳缘盛新材料科技有限公司
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