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A kind of preparation method of stable cationic pigment dispersant and stable cationic pigment dispersant

A pigment dispersant and cation technology, applied in the direction of coating, can solve the problems of weak pigment tinting strength and poor coating performance of pigment particles, and achieve the effect of good steric hindrance, good stability and improved conversion rate.

Active Publication Date: 2022-05-17
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the existing pigment dispersants is that the coating performance of the dispersant molecules on the pigment particles is poor, resulting in weak coloring power of the pigments

Method used

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  • A kind of preparation method of stable cationic pigment dispersant and stable cationic pigment dispersant
  • A kind of preparation method of stable cationic pigment dispersant and stable cationic pigment dispersant
  • A kind of preparation method of stable cationic pigment dispersant and stable cationic pigment dispersant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A stable cationic pigment dispersant and a preparation method thereof are formed by polymerizing the following components, the total mass of the raw materials is 1000 parts, and the components include:

[0044] 10.54 parts of poly-1,2-propylene glycol, 352.27 parts of ethylene oxide, 0.4 parts of the composition of concentrated sulfuric acid with a mass ratio of 3:2 and lithium aluminum tetrahydrogen, 28.75 parts of allyltrimethylammonium chloride, mass ratio It is 2.3 parts of compositions of 1:3 sodium formaldehyde sulfoxylate and sodium metabisulfite, and the mass ratio is 6.5 parts of compositions of 1:1 diisopropyl peroxydicarbonate and benzoyl peroxide, and the mass ratio is 1.1 parts of a composition of 3:2 thioglycolic acid and mercaptopropanol, 5.5 parts of a composition of potassium carbonate and triethanolamine in a mass ratio of 3:1, and the rest are water, and the total mass is 1000 parts.

[0045] A preparation method of a stable cationic pigment dispersan...

Embodiment 2-6

[0051] Examples 2-6 are used to illustrate the preparation method of the stable cationic pigment dispersant of the present invention and the stable cationic pigment dispersant prepared by the method.

[0052] In this example, except that the components and amounts of the raw materials are shown in Table 1, and the parameters in the steps are shown in Table 2, the same method as Stable cationic pigment dispersant, of which Example 5 is the most preferred solution.

[0053] Example 1 is used as a sample for comparison with Example 5 to illustrate the preferred solid content.

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Abstract

The invention provides a preparation method of a stable cationic pigment dispersant and a stable cationic pigment dispersant. The pigment dispersant is mainly prepared from the following materials: 10.49-11.04 parts of polyether alcohol, 351.49-369.51 parts Cyclic monomer, 0.3-0.9 part of catalyst, 28.02-29.45 part of cationic monomer, 2.1-5.4 part of reducing agent, 6.2-9.5 part of initiator, 5.3-7.9 part of neutralizing agent, 0.8-2.6 part of chain transfer agent, and the rest for deionized water. In the present invention, polyether monomers are firstly prepared, and the acid-ether ratio of the dispersant is determined according to the molecular weight of the prepared polyether, so as to improve the coating performance of the dispersant molecules. And the molecular branch of the dispersant is a polyether branch, which has good flexibility and can play a good role in steric hindrance.

Description

technical field [0001] The invention belongs to the technical field of dispersants, in particular to a preparation method of a stable cationic pigment dispersant and a stable cationic pigment dispersant. Background technique [0002] In the water-based paint industry, the wetting and dispersing of pigments and fillers in water is a key link in paint manufacturing technology, and dispersants are of great significance to paint production, storage, and use. Dispersants are chemicals that disperse fine particulate matter in aqueous or organic media and form stable finely dispersed suspensions. They are all natural or synthetic compounds containing hydrophilic groups and hydrophobic groups (or segments), which function to reduce the adhesion between particles or droplets and prevent their flocculation or agglomeration. The problem of the existing pigment dispersant is that the coating performance of the dispersant molecule on the pigment particles is poor, resulting in the weak ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F226/02C08G65/28C09D7/65
CPCC08F283/06C08G65/2609C09D7/65C08F226/02
Inventor 柯凯颉永宁罗人豪
Owner HUBEI UNIV OF TECH
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