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Method for preparing organic pigment dispersion by utilizing cotton fabric cationic modification raffinate

A cationic modifier and organic pigment technology, applied in the field of textile printing and dyeing, can solve the problems of high dosage, waste of the environment, pollution and so on

Inactive Publication Date: 2016-01-06
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure the modification effect, the amount of cationic modifier is often very high, and a large amount of modifiers that are not adsorbed or hydrolyzed and cannot react with the fabric exist in the raffinate, and are directly discharged after processing, resulting in huge waste and environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Remove the cotton fabric that has undergone conventional cation modification treatment from the treatment solution, and after the raffinate temperature is cooled to room temperature, filter it with a nylon filter membrane with a pore size of 0.22 μm, add acetic acid to adjust the pH to 4, and add a mass of residual cations while stirring. Modifier 8 times the organic red pigment, and finally the above mixed solution was ultrasonically treated for 20 minutes to prepare a stable cationic red pigment dispersion. The average particle diameter of the pigment measured by a laser particle size analyzer was 202nm, and the Zeta potential was 46.3mv.

Embodiment 2

[0011] Remove the cotton fabric that has undergone conventional cation modification treatment from the treatment solution, and after the raffinate temperature is cooled to room temperature, filter it with a nylon filter membrane with a pore size of 0.22 μm, add acetic acid to adjust the pH to 4.5, and add a mass of residual cations while stirring. Modifier 6 times the organic yellow pigment, and finally the above mixed solution was ultrasonically treated for 25 minutes to prepare a stable cationic yellow pigment dispersion. The average particle diameter of the pigment measured by a laser particle size analyzer was 198nm, and the Zeta potential was 42.8mv.

Embodiment 3

[0013] Remove the cotton fabric that has undergone conventional cation modification treatment from the treatment solution, and after the raffinate temperature is cooled to room temperature, filter it with a nylon filter membrane with a pore size of 0.22 μm, add acetic acid to adjust the pH to 4.2, and add a mass of residual cations while stirring. Modifier 4 times the amount of organic blue pigment, and finally the above mixed solution was ultrasonically treated for 30 minutes to prepare a stable cationic blue pigment dispersion. The average particle diameter of the pigment measured by a laser particle size analyzer was 275nm, and the Zeta potential was 45.6mv.

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PUM

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Abstract

The invention discloses a method for preparing an organic pigment dispersion by utilizing the cationic modified raffinate of cotton fabric, which belongs to the technical field of textile printing and dyeing. The present invention adopts the following process: remove the cotton fabric treated with conventional cation modification from the treatment liquid, and after the temperature of the raffinate is cooled to room temperature, filter it with a filter membrane with a pore size of 0.22 μm and adjust the pH to 4-4.5 with acetic acid, while stirring While adding an organic pigment whose mass is 4-8 times that of the residual cationic modifier, finally the above mixed solution is ultrasonically pulverized for 20-30 minutes to prepare a stable cationic pigment dispersion. The invention can prepare a stable cationic pigment dispersion system and realize the repeated utilization of the cotton fabric cationic modification raffinate.

Description

technical field [0001] The invention relates to a method for preparing an organic pigment dispersion by utilizing the cationic modified raffinate of cotton fabric, belonging to the technical field of textile printing and dyeing. Background technique [0002] The most commonly used dyes for cotton fabric dyeing are reactive dyes, but there are problems such as low utilization rate, waste of resources and environmental pollution. The cationic modification of cotton fabrics generally fixes cationic compounds on the fibers through chemical combination or physical adsorption, which can improve the exhaustion rate and color fixation rate of reactive dyes, and can reduce or even eliminate the use of inorganic salts in the dyeing process, which is effective. One of the ways to solve the dyeing problem of reactive dyes. When the cotton fabric is modified by the exhaust dyeing method, the cationic modifier is added to the treatment bath, and part of the modifier molecules are adsorbe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/46C09B67/18
Inventor 郝龙云王蕊房宽峻蔡玉青柳荣展
Owner QINGDAO UNIV