A kind of synthetic method of disperse blue 77

A synthesis method and a technology for dispersing blue, applied in the field of blue dye synthesis technology, can solve the problems of increased waste water, large consumption of aniline, increased content of aniline, etc., and achieve reduced production cost, low consumption of aniline, and fast color absorption. Effect

Active Publication Date: 2016-09-28
JIUJIANG FUDA IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This not only leads to a large consumption of aniline, incomplete precipitation of the material, but also the fine crystallization of the material, which is not easy to separate and is very difficult to wash, resulting in an increase in the content of aniline in the wastewater, and at the same time the amount of wastewater is also greatly increased, making it more difficult for sewage treatment.

Method used

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  • A kind of synthetic method of disperse blue 77

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Embodiment 1

[0033] Embodiment one: see figure 1 .

[0034] The invention discloses a synthetic method of disperse blue 77, comprising the steps of:

[0035] a. Add the mixed solution of aniline and ethylene glycol methyl ether in the reaction vessel, stir, and after detection, analysis and calculation, drop a certain amount of mixed solution of aniline and ethylene glycol methyl ether again, and the total volume of the aniline dropped into twice is 100 Milliliters, the total volume of ethylene glycol methyl ether is 500 milliliters;

[0036] b. Raise the temperature to 30°C, add 1,8-dihydroxy-4,5-dinitroanthraquinone at 30°C, and keep the molar ratio of aniline to 1,8-dihydroxy-4,5-dinitroanthraquinone at 1 :4;

[0037] c. After the addition, the temperature was raised to 110°C. At about 110°C, the material began to undergo condensation reaction, and the temperature was kept for 4 hours;

[0038] d. Raise the temperature to 120°C and keep the temperature at 120°C for 8 hours;

[...

Embodiment 2

[0047] a. Add the mixed solution of aniline and ethylene glycol ether in the reaction vessel, stir, after detection analysis calculates, drop into the mixed solution of a certain amount of aniline and ethylene glycol ether again, the total volume of the aniline that drops into twice is 200 milliliters, The total volume of ethylene glycol methyl ether is 400 milliliters;

[0048] b. Raise the temperature to 35°C, add 1,8-dihydroxy-4,5-dinitroanthraquinone at 35°C, and keep the molar ratio of aniline to 1,8-dihydroxy-4,5-dinitroanthraquinone at 1 :7;

[0049] c. After the addition, the temperature was raised to 115°C. At about 115°C, the material began to undergo condensation reaction, and the temperature was kept for 2 hours;

[0050] d. Heat up to 130°C and keep warm for 4 hours;

[0051] e. Cool down to 75°C;

[0052] f. Cool the mixture of 1,8-dihydroxy-4,5-dinitroanthraquinone, aniline and ethylene glycol ethyl ether after the above condensation reaction to 75°C an...

Embodiment 3

[0059] a. Add the mixed solution of aniline and ethylene glycol in the reaction vessel, stir, and after detection, analysis and calculation, drop into a certain amount of mixed solution of aniline and ethylene glycol again, the total volume of the aniline dropped into twice is 400 milliliters, ethylene glycol The total volume of alcohol is 200 ml;

[0060] b. Raise the temperature to 40°C, add 1,8-dihydroxy-4,5-dinitroanthraquinone at 40°C, and keep the molar ratio of aniline to 1,8-dihydroxy-4,5-dinitroanthraquinone at 1 :15;

[0061] c. After the addition, the temperature was raised to 115°C. At about 115°C, the material began to undergo condensation reaction, and the temperature was kept for 1 hour;

[0062] d. Heat up to 130°C and keep warm at 130-140°C for 2 hours;

[0063] e. Cool down to 80°C;

[0064] f. Cool the mixture of 1,8-dihydroxy-4,5-dinitroanthraquinone, aniline and ethylene glycol ethyl ether after the above condensation reaction to 80°C and put it i...

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Abstract

The invention relates to a synthesis process of a blue dye with high fastness, and specifically discloses a synthesis method of disperse blue 77, comprising the following steps: in the first step, 1,8-dihydroxy-4 , 5-dinitroanthraquinone and aniline undergo a condensation reaction in an organic solvent; the second step is to crystallize the material after the condensation reaction; the third step is to filter and wash to obtain the product disperse blue 77. Compared with the disperse blue 77 produced by the general process, the material quality of the present invention is better, and it is pure blue; the high-temperature and high-pressure dyeing effect and the lifting force are good; the material is completely separated out, the yield is high, all the solvents are recycled, and the production cost is reduced. "Greatly reduce stress and serve multiple purposes.

Description

technical field [0001] The invention relates to a synthesis process of a blue dye with high fastness, and specifically discloses a synthesis method of disperse blue 77. Background technique [0002] Disperse Blue 77 is a disperse dye suitable for dyeing and printing of polyester and its blended fabrics with high fastness to sunlight, washing, sublimation and rubbing. Because of its good performance, it is widely used in automotive interior, home textiles, and outdoor textiles. [0003] In the process of synthesizing disperse blue 77, the general process is to directly condense 1,8-dihydroxy-4,5-dinitroanthraquinone with aniline, in which aniline is used as both a reactant and a solvent. This not only leads to a large consumption of aniline and incomplete precipitation of the material, but also makes the material crystallized fine, difficult to separate, and very difficult to wash, resulting in an increase in the content of aniline in the wastewater, and at the same time the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C225/36C07C221/00
Inventor 邵卫龙彭德新
Owner JIUJIANG FUDA IND CO LTD
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