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Synthesizing method of disperse yellow dye

A synthesis method and technology of dispersing yellow, applied in azo dyes, organic dyes, monoazo dyes and other directions, can solve the problems of complicated steps, large amount of sewage and high production cost, and achieve simplified reaction steps, reduce the amount of sewage, cost saving effect

Active Publication Date: 2016-04-06
ZHEJIANG RUNTU INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The production process steps are complicated and the amount of sewage produced is large, so the production cost is relatively high

Method used

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  • Synthesizing method of disperse yellow dye
  • Synthesizing method of disperse yellow dye
  • Synthesizing method of disperse yellow dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 200g of water to a 500ml beaker, put in 10.90g of m-aminophenol, 80g of hydrochloric acid with a mass percentage of 10%, start stirring, throw in flakes of ice to cool the material to 0°C, and make a 30% solution of 5.84g of sodium nitrite in advance , drop the sodium nitrite solution into the beaker within 15 minutes under the condition of 0-5°C, continue to keep stirring for 30 minutes under the condition of 0-5°C after dropping, when the heat preservation is completed, the diazonium solution is clear and there is no insoluble matter, add 0.5g For urea, after stirring for 5 minutes, test it with starch potassium iodide test paper. If it does not show purple, add 0.3g Pingpingjia and wait for coupling.

[0029] Add 100g water in another beaker, 10g sodium acetate and 13.1g methylpyridone, start stirring, methylpyridone is dissolved in the sodium acetate solution, stand-by.

[0030] The picoline solution is evenly dropped into the diazo solution within 60 minutes, t...

Embodiment 2

[0033] Add 200g of water to a 500ml beaker, put in 10.90g of m-aminophenol, 60g of hydrochloric acid with a mass percentage of 18%, start stirring, throw in pieces of ice to cool the material to 0°C, and make a 30% solution of 5.84g of sodium nitrite in advance , drop the sodium nitrite solution into the beaker within 15 minutes under the condition of 0-5°C, continue to keep stirring for 30 minutes under the condition of 0-5°C after dropping, when the heat preservation is completed, the diazonium solution is clear and there is no insoluble matter, add 0.5g For urea, after stirring for 5 minutes, test it with starch potassium iodide test paper. If it does not show purple, add 0.3g Pingpingjia and wait for coupling.

[0034] Add 100g water in another beaker, 10g sodium acetate and 13.1g methylpyridone, start stirring, methylpyridone is dissolved in the sodium acetate solution, stand-by.

[0035] The picoline solution is evenly dropped into the diazo solution within 60 minutes, t...

Embodiment 3

[0038] Add 200g of water to a 500ml beaker, put in 10.90g of m-aminophenol, 60g of hydrochloric acid with a mass percentage of 18%, start stirring, throw in pieces of ice to cool the material to 0°C, and make a 30% solution of 5.84g of sodium nitrite in advance , drop the sodium nitrite solution into the beaker within 15 minutes under the condition of 0-5°C, continue to keep stirring for 30 minutes under the condition of 0-5°C after dropping, when the heat preservation is completed, the diazonium solution is clear and there is no insoluble matter, add 0.5g For urea, after stirring for 5 minutes, test it with starch potassium iodide test paper. If it does not show purple, add 0.3g Pingpingjia and wait for coupling.

[0039] Add 100g water in another beaker, 10g sodium carbonate and 13.1g picoline, start stirring, picoline is dissolved in the sodium acetate solution, stand-by.

[0040] The picoline solution is evenly dropped into the diazo solution within 60 minutes, the tempera...

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Abstract

The invention discloses a synthesizing method of a disperse yellow dye. The synthesizing method includes the following steps that 1, metha amino phenon and sodium nitrite are subjected to a diazo-reaction under the acidic condition, and metha amino phenon diazonium salt is obtained; 2, the metha amino phenon diazonium salt obtained in step 1 and a methyl ketone pyridine solution are subjected to a coupling reaction, and a coupling product is obtained; 3, the coupling product obtained in step 2 and benzene sulfonyl chloride are subjected to an esterification reaction, and after the reaction is completed, the disperse yellow dye is obtained through posttreatment. The synthesizing method is easy and convenient to operate, short in process and less in sewage quantity, and the performance is consistent with that of filter cake synthesized through a traditional synthesis method.

Description

technical field [0001] The invention belongs to the field of preparation of disperse dyes, in particular to a method for synthesizing disperse yellow dyes. Background technique [0002] Disperse Yellow 114, whose structure is shown in formula (I), is a yellow powder. It is not resistant to alkali during dyeing and printing, and the suitable pH value is 3-7. It is suitable for dyeing polyester by high temperature and high pressure method and hot melt method, not suitable for dyeing by carrier method. It can be directly printed on polyester fabric, but it cannot be used as the background color of anti-discharge printing. It is also used for hot-melt dyeing of polyester-cotton blended fabrics. Good compatibility with other disperse dyes, bright yellow color, can be used as the main color or mixed color in light colors. It has good dyeing performance on diacetate fiber and triacetate fiber, and it is not suitable for dyeing nylon fiber. [0003] [0004] In the prior art...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B29/42
CPCC09B29/3626
Inventor 何江伟陈伟东章文刚陈宝兴高立江
Owner ZHEJIANG RUNTU INST
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