Production technology of disperse orange

A technology of azo compound and coupling reaction, which is applied in the field of chemistry, can solve problems such as product environmental protection indicators not up to standard, and achieve the effects of short time consumption, high output, and increased output

Inactive Publication Date: 2018-06-08
DONGYING ANNUOQI TEXTILE MATERIALS +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that there is a defect that the product environmental protection index is not up to standard in the existing disperse orange production process. Therefore, the inv...

Method used

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  • Production technology of disperse orange
  • Production technology of disperse orange
  • Production technology of disperse orange

Examples

Experimental program
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Embodiment 1

[0036] The present embodiment provides a kind of production technique of disperse orange, comprises the steps:

[0037] (1) Pump 1730kg of sulfuric acid (the concentration of sulfuric acid is 98%) and 1983kg of nitrosyl sulfuric acid solution (the concentration of nitrosyl sulfuric acid is 40%) into the enamel kettle, start stirring, open the frozen brine inlet and outlet valves, and control the temperature at 18- Between 22°C, 1300kg of 2,6-dichloro-4-nitroaniline was uniformly added within 3.6 hours. After adding the materials, keep the temperature at 20-22°C for 4 hours. After the heat preservation, cool down to below 20°C to obtain the diazonium solution for coupling.

[0038] (2) Add 40,000 kg of bottom water to the coupling pot, add ice to control the temperature at 20-25°C, add 19 kg of urea and 25 kg of MF, quickly add 1372 kg of N-acetoxyethyl-N-cyanoethyl aniline, and stir for 30 minutes, standby;

[0039] (3) After the beating time of N-acetoxyethyl-N-cyanoethylan...

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Abstract

The invention discloses a preparation method of disperse orange. The method comprises the following step of coupling diazonium salt and N-acetylyloxyethyl-N-cyanoethylaniline for 2h under the temperature of 25-35 DEG C to obtain the disperse orange, wherein the material adding sequence in the coupling reaction is that diazonium salt is added to N-acetylyloxyethyl-N-cyanoethylaniline. According tothe production technology, the requirements of people on environmental protection indexes can be met; the cost is decreased; the output is increased; the color of the product is consistatn with that produced by other technologies in the prior art.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a production process of disperse orange. Background technique [0002] With the increase in the output and variety of synthetic fibers worldwide, the amount of disperse dyes is gradually increasing, and disperse orange is an important class of disperse dyes. The preparation of disperse orange in the prior art generally uses arylamine and diazotization reagent to carry out diazotization reaction, and then the product obtained after the diazotization reaction is subjected to coupling reaction with 2,6-dichloro-4-nitroaniline, In the preparation process, the coupling reaction is positive coupling, the coupling temperature is below 3°C, the coupling reaction time is generally 4 hours, and the material is directly pressed after the reaction is completed. The organic chlorine carrier contained in the product obtained by this method exceeds the standard and does not meet the requirements 0TEX-...

Claims

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Application Information

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IPC IPC(8): C09B29/01C09B29/085
CPCC09B29/0003C09B29/08
Inventor 秦永丹程晓艳
Owner DONGYING ANNUOQI TEXTILE MATERIALS
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