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Red pigment paste with ultrahigh dispersity

A red pigment, dispersive technology, applied in the direction of pigment slurry, etc., can solve the problems of non-lubricating gel pen writing, ink surface blooming, easy to block the tip of the pen, etc., achieve strong coloring power, low usage, and promote compatibility sexual effect

Inactive Publication Date: 2014-05-07
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The color paste for preparing gel pen ink must have high pigment dispersion stability and good compatibility with other ink additives. The color paste is required to have a fine particle size and uniform distribution, and a strong ability to resist external interference. Otherwise, once it is used in neutral ink and gel pen, the surface of the ink will be blurred, the ink will easily be reunited and stratified, and the filled gel pen will have bad phenomena such as non-lubricating writing and easy clogging of the pen tip.

Method used

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  • Red pigment paste with ultrahigh dispersity
  • Red pigment paste with ultrahigh dispersity
  • Red pigment paste with ultrahigh dispersity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of ultra-high dispersibility red pigment color paste, its raw material weight composition is:

[0023]

[0024] A preparation method of an ultra-high dispersibility red pigment paste, the concrete steps are:

[0025] 1) Add 46.44 parts by weight of deionized water into the container, then add 0.5 parts by weight of modified CH-10, 5.5 parts by weight of CH-10, and 4 parts by weight of Winsperse4050, and stir until uniform and transparent. Then add 6 parts by weight of ethylene glycol, 6 parts by weight of polyethylene glycol-400, and 1.5 parts by weight of triethanolamine, and stir evenly.

[0026] 2) Add 30 parts by weight of Pigment Red 17, stir while adding the pigment, and then mechanically stir until the pigment is fully wetted.

[0027] 3) Use methods such as colloid mill for pre-dispersion. Then grind in a horizontal sand mill, mechanically stir the circulating material at the same time, add a small amount of defoamer step by step according to the foa...

Embodiment 2

[0029] A kind of ultra-high dispersibility red pigment color paste, its raw material weight composition is:

[0030]

[0031] A preparation method of an ultra-high dispersibility red pigment paste, the concrete steps are:

[0032] 1) Add deionized water into the container according to the ratio requirements, then add modified CH-10B, CH-10B, WinSperse4060, stir until uniform and transparent, then add glycerin, sorbitol, polyethylene glycol-200, triethanolamine in sequence , stir well.

[0033] 2) Then add Pigment Red 32, and stir until the pigment is fully wetted while adding the pigment.

[0034] 3) Pre-disperse by high-speed dispersion method. Then grind in a horizontal sand mill while mechanically stirring the circulating material, and add a small amount of defoamer step by step according to the foam condition during the grinding process. Grind for 3 hours at a rotational speed of 2000-3000r / min to obtain the finished color paste.

Embodiment 3

[0036] A kind of ultra-high dispersibility red pigment color paste, its raw material weight composition is:

[0037]

[0038] A preparation method of an ultra-high dispersibility red pigment paste, the concrete steps are:

[0039] 1) Add deionized water into the container according to the above formula requirements, then add modified CH-10S, CH-10S and WinSperse5020, stir until uniform and transparent, then add ethylene glycol, glycerin, maltitol, and triethanolamine in sequence. Mechanically stir evenly.

[0040] 2) Then add Pigment Red 170, and stir until the pigment is fully wetted while adding the pigment.

[0041] 3) Ultrasonic method is used for pre-dispersion. Then grind in a horizontal sand mill while mechanically stirring the circulating material, and add a small amount of defoamer step by step according to the foam condition during the grinding process. Grind for 3.5 hours at a rotational speed of 2000-3000r / min to obtain the finished color paste.

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Abstract

The invention relates to red pigment paste with ultrahigh dispersity. The red pigment paste comprises the following raw materials in parts by weight: 20 to 40 parts of pigment red, 10 to 20 parts of binder, 0.5 to 2 parts of pH regulator, 2 to 5 parts of modifier, 4 to 10 parts of dispersing agent, 0.05 to 0.2 part of defoaming agent, and 30 to 60 parts of deionized water. The paste is mainly applicable to the preparation of red ink for a gel pen or the preparation of ink-jet printing ink. The paste has the main characteristics of high solid content, low consumption of the dispersing agent, uniformly distributed particle size, high stability, and excellent compatibility with follow-up ink systems.

Description

【Technical field】 [0001] The invention relates to the technical field of color paste, in particular to an ultra-high dispersibility red pigment color paste. 【Background technique】 [0002] The color paste for preparing gel pen ink must have high pigment dispersion stability and good compatibility with other ink additives. The color paste is required to have a fine particle size and uniform distribution, and a strong ability to resist external interference. Otherwise, once it is used in neutral ink and gel pen, the surface of the ink will be blurred, and the ink will be prone to agglomeration and stratification. [0003] The preparation process of the color paste is mainly the process of dispersing and stabilizing the pigment particles. The dispersant forms a transition connection between the dispersion medium such as water and the pigment particles. Therefore, the key to the color paste used in neutral ink preparation is the pigment, dispersant and Optimized integration of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00
Inventor 王伟超马雪婷姚王照陈爱平曾炽涛郝鸿飞
Owner EAST CHINA UNIV OF SCI & TECH
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