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A heterocycle azo yellow disperse dye and a preparing method thereof

A heterocyclic azo yellow and disperse dye technology, applied in the direction of azo dyes, monoazo dyes, organic dyes, etc. Effect

Inactive Publication Date: 2015-08-12
沈金火
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defect that the fastnesses of the existing disperse yellow dyes and blue dyes are significantly reduced, especially the light fastness, we propose a heterocyclic azo Yellow disperse dye and preparation method thereof, which improves the dyeing effect with blue dye, and the light fastness is still maintained at level 5 or above

Method used

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  • A heterocycle azo yellow disperse dye and a preparing method thereof
  • A heterocycle azo yellow disperse dye and a preparing method thereof
  • A heterocycle azo yellow disperse dye and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 1000 kilograms of water and 127.5 kilograms of m-chloroaniline into a 3000-liter pot, add 400 kilograms of 30% hydrochloric acid under stirring conditions, and add 500 kilograms of ice cubes to cool down to 0-3°C. Then add 200 kilograms of 30% sodium nitrite solution and carry out diazo reaction for 2 hours to obtain diazonium salt solution, add 1000 kilograms of water and 80 kilograms of soda ash in a 5000 liter pot, add 205 kilograms of N-butylpyridone under stirring conditions and stir After 0.5 hours, acid-precipitate with 8% hydrochloric acid, add 500 kg of ice cubes, and cool down to 5-8°C to obtain a coupling component. The diazonium salt solution was added to the coupling components within 1 hour, the pH value of the reaction mixture was adjusted to 0.5-1.5, the reaction was heated to 50°C for 4 hours and filtered, rinsed to neutrality, and 326 kilograms of dyes were obtained, and its molecular structural formula was:

[0016]

Embodiment 2

[0018] Add 1000 kg of water and 164 kg of orange-based GC into a 3000-liter pot, and add 100 kg of 30% hydrochloric acid under stirring conditions to completely dissolve the orange-based GC. Add 500 kilograms of ice cubes and be cooled to 0-3 ℃, then add 210 kilograms of 30% sodium nitrite solution to carry out diazonium reaction for 2 hours, obtain diazonium salt solution, add 1000 kilograms of water and 80 kilograms of soda ash in 5000 liters of pots, in Under stirring conditions, add 205 kg of N-butylpyridone and stir for 0.5 hour, then add 8% concentration of hydrochloric acid to carry out acid precipitation and add 500 kg of ice cubes to cool down to 5-8 DEG C to obtain a coupling component solution. The diazonium salt solution was added to the coupling components within 1 hour, the pH value of the reactant was adjusted to 0.5-1.5 and the reaction was performed for 4 hours, then the temperature was raised to 50°C for filtration, and 326 kilograms of dyes were obtained by r...

Embodiment 3

[0021] Add 1000 kilograms of water and 138 kilograms of m-nitroaniline into a 3000-liter pot, add 400 kilograms of 30% hydrochloric acid under stirring conditions, and stir for 0.5 hour, then add 500 kilograms of ice cubes to lower the temperature by 0-5°C. Then 160 kg of 30% sodium nitrite solution was added to carry out a diazo reaction for 2.5 hours to obtain a diazonium salt solution. Add 1000 kilograms of water and 80 kilograms of soda ash in a 5000-liter pot, add 205 kilograms of N-butylpyridone under stirring conditions and stir for 0.5 hour, then add 8% concentration hydrochloric acid for acid precipitation and add 400 kilograms of ice cubes to cool down to 6- 10 ° C, to obtain the coupling component, add the diazonium salt solution to the coupling component within 1.5 hours, adjust the pH value of the reactant to 0.5-1.5 and reflect for 5 hours, filter, and rinse to neutrality to obtain 326 kilograms of dyes. The structural formula is:

[0022]

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Abstract

A heterocycle azo yellow disperse dye is disclosed. The molecular structure of the disperse dye is shown as (I). A preparing method of the disperse dye is also disclosed. The method includes a step of adding water and m-chloroaniline or m-chloroaniline hydrochloride into a reaction pot, adding hydrochloric acid having a concentration of 30% under stirring, adding ice cubes, cooling to 0-5 DEG C, and adding a sodium nitrite solution having a concentration of 30% to obtain a diazonium salt solution; a step of adding water and sodium carbonate into a coupling pot, adding N-butyl pyridine under stirring, stirring, adding hydrochloric acid having a concentration of 8%, adding ice cubes, and cooling to 5-10 DEG C to obtain a coupling component; a step of adding the prepared diazonium salt solution into the coupling component, adjusting the pH value of a reaction product to 0.5-1.5, reacting for 4-5 h, heating to 50 DEG C, filtering, and rinsing until the product is neutral to obtain the disperse dye. The disperse dye is wide in dye solution pH range, almost same in colored light, and good in light fastness and soaping fastness. The formula (I) is shown in the specification.

Description

technical field [0001] The invention relates to the field of printing and dyeing of polyester and its blended fabrics, in particular to a heterocyclic azo yellow disperse dye and a preparation method thereof. Background technique [0002] With the rapid development of new polyester fibers in recent years and the improvement of the quality requirements for textile products, printing and dyeing enterprises have also put forward higher requirements for the dyeing performance and environmental protection performance of dyes, that is, the dyes must have a high rate of improvement and various dyeing. Fastness. As far as disperse dyes are concerned, little work has been done to develop new dyes, especially heterocyclic dyes. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention lies in that in order to overcome the defect that various fastnesses are obviously reduced after the existing disperse yellow dyes and blue dyes are dyed together, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B29/42
Inventor 沈金火
Owner 沈金火
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