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High-dispersity acidic dye and preparation method therefor

An acid dye, high dispersibility technology, applied in the direction of organic dyes, etc., can solve the problems of insufficient solubility and poor dispersibility of organic dyes, and achieve the effect of good dispersion effect, low cost, and difficult precipitation

Inactive Publication Date: 2018-09-28
HOSA IND FUJIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a kind of highly dispersible acid dye and its preparation method, solve the problems of poor dispersibility and insufficient solubility of organic dyes

Method used

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  • High-dispersity acidic dye and preparation method therefor
  • High-dispersity acidic dye and preparation method therefor

Examples

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Effect test

preparation example Construction

[0056] The preparation method of above-mentioned embodiment 1 highly dispersible acid dyes, comprises the steps:

[0057] S1 preparation of dyeing aids: mixing the leveling agent, co-solvent and dispersant evenly under stirring, to obtain the dyeing aids for use, weighing each raw material according to the weight part, and set aside;

[0058] S2 dye grinding: put the color material into a pulverizer and pulverize to obtain dye powder with particle size ≥ 200 mesh;

[0059] S3 preparation of acid dyes: add colorants, inorganic salts and water by weight percentage, keep warm and mix for 50 minutes after heating up, then add thickener and stir for 10 minutes, add dyeing aids in step S1 after cooling down and mix evenly, adjust pH, and prepare The resulting acid dye is packed into a dark airtight container.

[0060] Specifically, the mixing temperature in the S1 step is 10° C.; the temperature after the S3 is heated up is 100° C.; the temperature in the S3 step after the temperat...

Embodiment 1

[0062] The acid dye prepared in Example 1 has a shelf life of 24 months without deposition or precipitation.

[0063] The preparation method of above-mentioned embodiment 2 highly dispersible acid dyes, comprises the steps:

[0064] S1 preparation of dyeing aids: mixing the leveling agent, co-solvent and dispersant evenly under stirring, to obtain the dyeing aids for use, weighing each raw material according to the weight part, and set aside;

[0065] S2 dye grinding: put the color material into a pulverizer and pulverize to obtain dye powder with particle size ≥ 200 mesh;

[0066] S3 preparation of acid dyes: add colorants, inorganic salts and water by weight percentage, keep warm and mix for 60 minutes after heating up, then add thickener and stir for 20 minutes, add dyeing aids in step S1 after cooling down and mix evenly, adjust pH, and prepare The resulting acid dye is packed into a dark airtight container.

[0067] Specifically, the mixing temperature in the step S1 is...

Embodiment 2

[0069] The acid dye prepared in Example 2 has a shelf life of 24 months without deposition or precipitation.

[0070] The preparation method of above-mentioned embodiment 3 highly dispersible acid dyes, comprises the steps:

[0071] S1 preparation of dyeing aids: mixing the leveling agent, co-solvent and dispersant evenly under stirring, to obtain the dyeing aids for use, weighing each raw material according to the weight part, and set aside;

[0072] S2 dye grinding: put the color material into a pulverizer and pulverize to obtain dye powder with particle size ≥ 200 mesh;

[0073] S3 preparation of acid dyes: add colorants, inorganic salts and water by weight percentage, keep warm and mix for 55 minutes after heating up, then add thickener and stir for 15 minutes, add dyeing aids in step S1 after cooling down and mix evenly, adjust pH, and prepare The resulting acid dye is packed into a dark airtight container.

[0074] Specifically, the mixing temperature in the S1 step is...

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Abstract

The invention relates to a high-dispersity acidic dye and a preparation method therefor. The acidic dye is prepared from the following ingredients by percentage: 35% to 45% of pigments, 15% to 20% ofdyeing assistant, 3.5% to 5.0% of inorganic salt, 1.0% to 1.8% of thickener and the balance of water, wherein the pigments are triphenyl acidic dyes, anthraquinone acidic dyes, azo acidic dyes or pyrazole acidic dyes, the inorganic salt is a sodium salt, and the dyeing assistant is prepared from a leveling agent, a cosolvent and a dispersant according to the weight ratio of (8 to 10): (5 to 7): (2to 3). The preparation method comprises the following steps: S1. preparing the dyeing assistant; S2. grinding dyes; and S3. preparing the aqueous dye. The high-dispersity acidic dye has the advantages of wide dye application range, high solubility, good dispersity, long storage time and good stability.

Description

technical field [0001] The invention relates to the technical field of acid dyes, in particular to a highly dispersible acid dye and a preparation method thereof. Background technique [0002] Acid dyes are a kind of water-soluble dyes with acidic groups in their structure, and they are dyed in acidic medium. Most of the acid dyes contain sodium sulfonate, soluble in water, bright in color and complete in color spectrum. It is mainly used for dyeing wool, silk and nylon, and can also be used for leather, paper, ink, etc. Generally, it has no coloring power to cellulose fibers. Acid dyes have complete chromatograms and bright colors, and the light fastness and wet treatment fastness vary greatly with different dyes. Compared with direct dyes, acid dyes have a simple structure, lack of longer conjugated double bonds and homoplanar structures, so they lack directness to cellulose fibers and cannot be used for dyeing cellulose fibers. Different types of acid dyes have differ...

Claims

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Application Information

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IPC IPC(8): C09B67/26C09B67/46
CPCC09B67/0082C09B67/0073
Inventor 王忠付春林常向真王玉新沈强
Owner HOSA IND FUJIAN
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