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Finish paint and preparation method thereof

A topcoat and mixed solvent technology, applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of low drying speed, poor weather resistance, easy discoloration, etc., to improve flexibility, retain adhesion, and realize The effect of the protective effect

Inactive Publication Date: 2020-05-12
广汉华气防腐工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defects of poor outdoor weather resistance, easy discoloration, and low drying speed in the above-mentioned existing topcoat, the purpose of the present invention is to provide a topcoat and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A topcoat, characterized in that, in parts by weight, said topcoat comprises A component and B component, said A component comprising 40 parts of hydroxyl acrylic resin, 10 parts of pigment yellow, 12 parts of titanium dioxide, 2 parts of dispersant, 0.5 part of leveling agent, 0.1 part of defoamer, 0.2 part of drier, 2 parts of anti-settling agent, 5 parts of the first mixed solvent; the B component includes HDI trimer aliphatic isocyanate 80 1 part, 14 parts of the second mixed solvent, 1 part of the dehydrator; the first mixed solvent includes butyl acetate, propylene glycol methyl ether, and No. 100 solvent naphtha in a volume ratio of 4:2:4; the second mixed solvent includes volume Ethylene glycol ether acetate and butyl acetate in a ratio of 1:1;

[0050] a top coat,

[0051] Preparation of A component: including the following steps:

[0052] (1) According to the above parts by weight, the first mixed solvent is added to the hydroxyacrylic resin and stirred even...

Embodiment 2

[0061] A kind of finish paint, by weight, described finish paint comprises A component and B component, and described A component comprises 45 parts of hydroxyl acrylic resin, 11 parts of pigment yellow, 13 parts of titanium dioxide, 4 parts of dispersant , 1.2 parts of leveling agent, 0.3 parts of defoamer, 0.4 parts of drier, 3 parts of anti-settling agent, 13 parts of the first mixed solvent; the B component includes 82 parts of HDI trimer aliphatic isocyanate, the second 15 parts of mixed solvents, 2 parts of dehydrators; the first mixed solvents include butyl acetate, propylene glycol methyl ether, and No. 100 solvent naphtha in a volume ratio of 3:2:3; the second mixed solvents include a volume ratio of 1: 1 Ethylene glycol ether acetate and butyl acetate;

[0062] The preparation method is as in Example 1, wherein the above-mentioned component A and component B are mixed at a volume ratio of 5:1 and stirred evenly to obtain a topcoat.

Embodiment 3

[0064] A kind of finish paint, it is characterized in that, by weight, described finish paint comprises A component and B component, and described A component comprises 50 parts of hydroxyl acrylic resin, 12 parts of pigment yellow, 15 parts of titanium dioxide, 5 parts of dispersant, 2 parts of leveling agent, 0.5 part of defoamer, 0.5 part of drier, 5 parts of anti-settling agent, 8 parts of the first mixed solvent; the B component includes HDI trimer aliphatic isocyanate 85 Parts, 17 parts of the second mixed solvent, 3 parts of dehydrator; The first mixed solvent includes butyl acetate, propylene glycol methyl ether, No. 100 solvent naphtha in a volume ratio of 4:2:4; The second mixed solvent includes volume Ethylene glycol ether acetate and butyl acetate in a ratio of 1:1;

[0065] The preparation method is as in Example 1, wherein the above-mentioned component A and component B are mixed at a volume ratio of 4:1 and stirred evenly to obtain a topcoat.

[0066] In the te...

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PUM

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Abstract

The invention relates to finish paint and belongs to the technical field of paint preparation. The finish paint comprises a component A and a component B. The component A comprises 40-50 parts of hydroxy acrylic resin, 10-12 parts of pigment yellow, 12-15 parts of titanium dioxide, 2-5 parts of a dispersing agent, 0.5-2 parts of a leveling agent, 0.1-0.5 part of an antifoaming agent, 0.2-0.5 partof a drier, 2-5 parts of an anti-settling agent and 5-8 parts of a first mixed solvent. And the component B comprises 80-85 parts of HDI tripolymer aliphatic isocyanate, 14-17 parts of a second mixedsolvent and 1-3 parts of a dehydrator. Hydroxyl acrylic resin has the advantages of high weather resistance, high solid content, low viscosity, good wettability to pigments and fillers, capability offurther improving glossiness and good application property. HDI tripolymer aliphatic isocyanate is used as a curing agent, guarantees high weather resistance and rapid drying, and can increase the film forming speed of the coating. The finish paint is a double-component finish paint, contains a curing agent, can be dried quickly, and has the advantages of favorable fullness, favorable hardness, good gloss retention, corrosion resistance, good outdoor weather resistance and low discoloration tendency.

Description

technical field [0001] The invention relates to the technical field of paint preparation, in particular to a top paint and a preparation method thereof. Background technique [0002] Paint is a chemical mixture coating that can firmly cover the surface of objects for protection, decoration, marking and other special purposes. The relatively authoritative book "Painting Technology" in the Chinese coatings industry defines it as follows: "Painting is a material that can be coated on the surface of an object by different construction techniques to form a firm adhesion, a certain strength, and a continuous coating. Solid film. The film formed in this way is commonly called coating film, also known as paint film or coating.” Paint has protective functions: anti-corrosion, waterproof, oil-proof, chemical resistance, light resistance, temperature resistance, etc. Objects are exposed to the atmosphere and are eroded by oxygen, moisture, etc., resulting in damages such as metal corr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C09D7/20C09D7/61C09D163/00
CPCC08K2003/2241C09D5/08C09D163/00C09D175/04C09D7/20C09D7/61C08K3/22C08K3/36
Inventor 文国松衡廷阳赵兵王伟
Owner 广汉华气防腐工程有限公司
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