Preparation method of liquid disperse dye

A technology of disperse dyes and manufacturing methods, applied in the direction of organic dyes, etc., can solve problems such as affecting cost, dyeing quality, affecting color and luster effect, etc.

Inactive Publication Date: 2005-08-24
ZHEJIANG YUDA CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The particle size of disperse dyes directly affects the cost and quality of dyeing, especially the blending of disperse dyes widely used in printing and dyeing, which will affect the color effect due to the large particles of dyes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The crude product of the disperse dye obtained by the reaction is filtered to obtain a dye filter cake (about 50% solid content), and about 200 grams of the filter cake are taken, and dried for 2 hours under the condition of 80° C. to obtain 100 grams of the dry filter cake. Dissolve in 400 grams of acetone, obtain 500 grams of disperse dyes acetone solution A. Get 100 grams of dispersant MF-2 and dissolve it in 400 grams of water to obtain 500 grams of MF-2 aqueous solution B. Under the stirring condition of an emulsifying shearer, slowly add 500 grams of disperse dye acetone solution A into 500 grams of MF-2 aqueous solution B, and continue stirring to obtain 1000 grams of mixed solution C. Slowly raise the temperature of the mixed liquid C to 93°C, at this time, acetone vapor gradually comes out, and the acetone vapor is condensed and recovered. When acetone evaporates, part of the water will also evaporate, and water can be added if necessary. After 2 hours, obtai...

Embodiment 2

[0019] The crude product of the disperse dye obtained by the reaction is filtered to obtain a dye filter cake (about 50% solid content), and about 200 grams of the filter cake are taken, and dried for 2 hours under the condition of 80° C. to obtain 100 grams of the dry filter cake. Dissolve in 400 grams of acetone, obtain 500 grams of disperse dyes acetone solution A. Get 100 grams of dispersant lignosulfonate and dissolve it in 400 grams of water to obtain 500 grams of dispersant lignosulfonate aqueous solution B. Under the stirring condition of the emulsifying shearer, 500 grams of disperse dye acetone solution A was slowly added to 500 grams of dispersant lignosulfonate aqueous solution B, and continued stirring to obtain 1000 grams of mixed solution C. Slowly raise the temperature of the mixed liquid C to 90°C, at this time, acetone vapor gradually comes out, and the acetone vapor is condensed and recovered. When acetone evaporates, part of the water will also evaporate, ...

Embodiment 3

[0022] The crude product of the disperse dye obtained by the reaction is filtered to obtain a dye filter cake (about 50% solid content), and about 200 grams of the filter cake are taken, and dried for 2 hours under the condition of 80° C. to obtain 100 grams of the dry filter cake. Dissolve in 400 grams of ethanol to obtain 500 grams of disperse dye ethanol solution A. Get 100 grams of dispersant MF-2 and dissolve it in 400 grams of water to obtain 500 grams of MF-2 aqueous solution B. Under the stirring condition of an emulsifying shearer, 500 grams of disperse dye ethanol solution A was slowly added to 500 grams of MF-2 aqueous solution B, and continued stirring to obtain 1000 grams of mixed solution C. Slowly raise the temperature of the mixed liquid C to 98°C, at this time, ethanol vapor gradually comes out, and the ethanol vapor is condensed and recovered. When ethanol evaporates, some water will also evaporate, and water can be added if necessary. After 2 hours, obtain...

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Abstract

A liquid-state disperse dye is prepared through reaction, press filter to obtain cake, dissolving it in acetone or alcohol, dissolving disperser in water, mixing them together while stirring, and heating for evaporating organic solvent.

Description

technical field [0001] The invention relates to a method for manufacturing disperse dyes, in particular to a method for manufacturing liquid ultrafine disperse dyes. Background technique [0002] Disperse dyes refer to a class of dyes that are dispersed in a dye bath in the presence of a dispersant. The molecule contains polar groups, but does not contain water-soluble groups such as sulfonic acid groups and carboxylic acid groups. Disperse dyes dissolve very little in water. Disperse dyes are used for dyeing and printing synthetic fibers such as polyester, polypropylene, nylon and spandex. Closely related and the most used of all dyes. [0003] The raw dyes of disperse dyes obtained through the reaction are usually press-filtered to obtain filter cakes, and then sand-milled and spray-dried to obtain finished disperse dyes. Among them, the sanding process determines the particle size of the finished disperse dyes. The particle size of the disperse dyes obtained by the abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/40
Inventor 章浩龙
Owner ZHEJIANG YUDA CHEM IND
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