Preparation method of blue acid dye finished product

A technology of acid dyes and finished products, applied in the direction of organic dyes, etc., can solve the problems of dye dust pollution, achieve the effects of reducing dust pollution, environmental protection and cleaning process, reducing energy consumption and production costs

Inactive Publication Date: 2019-01-15
杭州下沙恒升化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 3. Standardization after drying will cause serious dye dust pollution

Method used

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  • Preparation method of blue acid dye finished product
  • Preparation method of blue acid dye finished product
  • Preparation method of blue acid dye finished product

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0036] A kind of preparation method of blue acid dye finished product of the present invention, the chemical structural formula of blue acid dye is as follows:

[0037]

Embodiment 1

[0040] Add 0.8kg of copper sulfate to 10kg of water and stir until completely dissolved, then add 10kg of liquid caustic soda and 0.4kg of glucose to react, filter with suction, and dry to obtain catalyst C-1.

[0041] Add 2800kg of water into the reaction kettle, stir and add 382kg of compound of formula (II) (100%), stir for 10min, add 185kg of compound of formula (III) (100%), stir and heat up to 58-82°C, add catalyst C-1 , the amount of catalyst C-1 is added according to the ratio of the molar ratio of the compound of formula (II) to copper ions: 1:0.075, and soda ash is added to adjust the pH=7.5 to 9.0, and 6kg of sucrose is added during the adjustment of the pH, and then at 65 to Stir and react at 85°C for 2 to 3 hours to obtain a reaction solution;

[0042] Add 5kg of liquid caustic soda to the reaction solution, heat up to 90°C for 30 minutes, add 1000kg of water, add perlite filter aid, and filter to obtain the reaction filtrate;

[0043] Cool the reaction filtrate ...

Embodiment 2

[0046] The amount of catalyst C-1 in this example is added according to the molar ratio of the compound of formula (II) to copper ions at a ratio of 1:0.051, and other process steps and conditions are the same as in Example 1.

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Abstract

The invention relates to the technical field of acid dyes, in particular to a preparation method of a blue acid dye finished product which is prepared by condensation reaction of a compound of formula(II) and a compound of formula (III) under the catalytic action of a catalyst C-1 under a base condition, the catalyst C-1 is Cu2O, and the catalyst C-1 is obtained by mixing copper sulfate, sucroseor glucose and sodium hydroxide for reacting, and filtering by suction. The preparation method can achieve higher conversion rate under a few catalyst dosage and few metal ions without refining treatment, mother liquor is recovered for application, no dust pollution is produced by spray drying, and the preparation method is clean and environmentally-friendly.

Description

technical field [0001] The invention relates to the technical field of acid dyes, in particular to a preparation method for finished blue acid dyes. Background technique [0002] As we all know, acid dyes have the advantages of bright color, good dyeing rate and color fastness, while anthraquinone acid dyes have excellent light fastness. In the prior art, formula (I) The production of the shown acid dyes adopts the following process: bromonic acid and m-aminoacetanilide are condensed under the action of fulvic acid agent in the presence of copper sulfate and stannous chloride catalyst to generate the target compound, then acid analysis, filtration, It is obtained by washing with water, beating and refining the filter cake, acid analysis, pressure filtration, drying and standardization. This process has the following disadvantages: [0003] 1. The energy consumption is high and the wastewater pressure is high, so the process is cumbersome, the process is complicated, acid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/24
Inventor 王彦伟王东
Owner 杭州下沙恒升化工有限公司
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