A kind of preparation method of reactive dye ruby

A technology of reactive dyes and ruby, applied in the field of dyes, can solve the problems of unfavorable printing and dyeing enterprises' energy saving, emission reduction and clean production, affecting product quality and efficiency, color flower and vat difference, etc., and achieve good color fixing ability and high reactivity , The effect of reducing the amount of pollutant discharge

Active Publication Date: 2022-02-15
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-bath dyeing of polyester and cotton. However, the existing reactive dye ruby ​​still has a high temperature resistance difference, and can only be dyed at about 50°C, which is not suitable for one-bath dyeing with disperse dyes. one step dyeing

Method used

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  • A kind of preparation method of reactive dye ruby
  • A kind of preparation method of reactive dye ruby
  • A kind of preparation method of reactive dye ruby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] The reactive dye carnelian provided by this embodiment is prepared by the following method:

[0068] (1) will Add to crushed ice and water and stir to adding sodium bicarbonate to adjust the pH value to 2.5-3.0, and reacting at 0-5° C. for 2.5 hours to obtain the first mixed solution. in, and The feeding molar ratio is 1:0.5;

[0069] (2) Will Add to the first mixed solution, then add sodium bicarbonate to adjust the pH value to 5.5-6.0, and react at 25-30° C. for 5.5 hours to obtain the second mixed solution. in, and The feeding molar ratio is 1:0.96;

[0070] (3) adding hydrochloric acid and sodium nitrite to the second mixed solution, and reacting at 0-5° C. for 1 h to obtain the third mixed solution, wherein, The molar ratio of HCl and sodium nitrite is 1:2.0:1.0;

[0071] (4) will Add to the third mixed solution, add sodium bicarbonate to adjust the pH value to 3.5-4.0, and react at 10-15° C. for 5.5 hours to obtain the fourth mixed solution. i...

Embodiment 2

[0079] The reactive dye carnelian provided by this embodiment is prepared by the following method:

[0080] (1) will Add to crushed ice and water and stir to adding sodium bicarbonate to adjust the pH value to 2.5-3.0, and reacting at 0-5° C. for 2 hours to obtain the first mixed solution. in, and The feeding molar ratio is 1:0.5;

[0081] (2) Will Add to the first mixed solution, then add sodium bicarbonate to adjust the pH value to 5.5-6.0, and react at 25-30° C. for 5 hours to obtain the second mixed solution. in, and The feeding molar ratio is 1:0.96;

[0082] (3) adding hydrochloric acid and sodium nitrite to the second mixed solution, and reacting at 0-5° C. for 1 h to obtain the third mixed solution, wherein, The molar ratio of HCl and sodium nitrite is 1:2.0:1.0;

[0083] (4) will Add to the third mixed solution, add sodium bicarbonate to adjust the pH value to 3.5-4.0, and react at 10-15° C. for 6 hours to obtain the fourth mixed solution. in, a...

Embodiment 3

[0091] The reactive dye carnelian provided by this embodiment is prepared by the following method:

[0092] (1) will Add to crushed ice and water and stir to adding sodium bicarbonate to adjust the pH value to 2.5-3.0, and reacting at 0-5° C. for 3 hours to obtain the first mixed solution. in, and The feeding molar ratio is 1:0.5;

[0093] (2) Will Add it to the first mixed solution, then add sodium bicarbonate to adjust the pH value to 5.5-6.0, and react at 25-30° C. for 6 hours to obtain the second mixed solution. in, and The feeding molar ratio is 1:0.96;

[0094] (3) adding hydrochloric acid and sodium nitrite to the second mixed solution, and reacting at 0-5° C. for 1 h to obtain the third mixed solution, wherein, The molar ratio of HCl and sodium nitrite is 1:2.0:1.1;

[0095] (4) will Add to the third mixed solution, add sodium bicarbonate to adjust the pH value to 3.5-4.0, and react at 10-15° C. for 6 hours to obtain the fourth mixed solution. in, ...

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Abstract

The invention relates to a preparation method of reactive dye carnelian, comprising: performing a condensation reaction with a condensate to obtain a condensed product; performing a secondary condensation reaction with a condensed product to obtain a condensed product; making the condensed product in Carry out diazo reaction under the action of nitrous acid to obtain the first intermediate; make the first intermediate react with acid couple to obtain the second intermediate; make diazo reaction under the action of nitrous acid to obtain the third intermediate ; Make the second intermediate and the third intermediate carry out alkali coupling reaction to obtain the fourth intermediate; make the fourth intermediate and carry out three condensation reactions to obtain the reactive dye carnelian. The reactive dye prepared by the invention has high reactivity, good color fixation and dyeing ability, and does not need to add soda ash during dyeing, thus avoiding the use of soda ash. At the same time, the reactive dye also has high temperature resistance, and can be used in conjunction with disperse dyes to simultaneously dye T / R or T / C blended fabric products at a temperature higher than 100°C to achieve a one-bath dyeing process.

Description

technical field [0001] The invention belongs to the technical field of dyes, and in particular relates to a preparation method of reactive dye carnelian. 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 one-bath one-bath dyeing of polyester and cotton. However, the existing reactive dye ruby ​​still has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B62/09
CPCC09B62/09
Inventor 王高峰陆再宏庄永祥
Owner 苏州澳缘盛新材料科技有限公司
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