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Safe water-based two-component high-gloss finish paint and preparation method thereof

A two-component, safe technology, used in coatings, polyurea/polyurethane coatings, etc., can solve the problems of difficult to widely use, slow drying speed, etc., to achieve faster reaction speed, ensure recoatability, and maintain performance.

Inactive Publication Date: 2020-05-15
DONGLAI COATING TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Water-based industrial coatings are mainly used in the fields of automobiles, railway vehicles, buses, construction machinery, etc. However, in the field of automotive refinish paints, the drying conditions of water-based varnishes can only be carried out under low temperature conditions (below 60°C) and the drying speed is slow. widely used

Method used

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  • Safe water-based two-component high-gloss finish paint and preparation method thereof
  • Safe water-based two-component high-gloss finish paint and preparation method thereof
  • Safe water-based two-component high-gloss finish paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The composition of a safe two-component water-based high-gloss finish paint is as follows:

[0023] Component A

[0024] raw material parts by weight Deionized water 2.5 Wetting defoamer Sufur104BC (Air Chemicals, USA) 1 Defoamer Tego830 (Evonik EVONIK) 0.5 Emulsion (polyaspartate mixed with acrylic resin 1, 50% solids) 90 Dipropylene glycol methyl ether DPM 2 Dipropylene glycol butyl ether DPNB 3 Leveling agent BYK381 (Byk Chemicals) 0.2 Rheological additive RM-12w (Desparon) 0.3 Leveling agent Tego4200 (Evonik EVONIK) 0.5 600—800r / min, disperse for 20min

[0025] Component B

[0026]

[0027]

[0028] Mix components A and B evenly at a mass ratio of 2:1, dilute with deionized water to spray viscosity, and obtain a quick-drying water-based two-component high-gloss varnish.

[0029] Compared with the conventional water-based two-component varnish, spray it on the tin plate with a film thi...

Embodiment 2

[0034] A safe water-based two-component high-gloss finish paint, including component A raw materials and component B raw materials with a mass ratio of 3:1, wherein the production process and mass percentage of component A are as follows:

[0035] Component A

[0036] raw material parts by weight Deionized water 4.3 Wetting defoamer Sufur104BC (Air Chemicals, USA) 1 Defoamer Tego830 (Evonik EVONIK) 0.5 Emulsion (polyaspartate mixed with acrylic resin, 50% solids content) 85 Dipropylene glycol methyl ether DPM 3 Dipropylene glycol butyl ether DPNB 5 Leveling agent BYK381 (Byk Chemicals) 0.2 Rheological additive RM-12w (Desparon) 0.5 Leveling agent Tego4200 (Evonik EVONIK) 0.5 600—800r / min, disperse for 20min

[0037] Component B

[0038]

[0039] Mix component A and component B evenly at a mass ratio of 3:1 to obtain a water-based two-component high-gloss finish paint.

[0040] After testing, compar...

Embodiment 3

[0042] A safe water-based two-component high-gloss finish paint, including component A raw materials and component B raw materials with a mass ratio of 4:1, wherein the production process and mass percentage of component A are as follows:

[0043] Component A

[0044] raw material parts by weight Deionized water 2 Wetting defoamer Sufur104BC (Air Chemicals, USA) 0.5 Defoamer Tego830 (Evonik EVONIK) 0.5 Emulsion (polyaspartate mixed with acrylic resin, 50% solids content) 80 Dipropylene glycol methyl ether DPM 3 Dipropylene glycol butyl ether DPNB 2 Leveling agent BYK381 (Byk Chemicals) 0.5 Rheological additive RM-12w (Desparon) 0.3 600—800r / min, disperse for 20min

[0045] Component B

[0046]

[0047] Compared with the conventional water-based two-component varnish, this quick-drying water-based two-component varnish is sprayed on the car door and heated at 50°C. After testing, the water-based two-compon...

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Abstract

The invention relates to a water-based quick-drying two-component high-gloss finish paint and a preparation method thereof. The finish paint comprises a component A and a component B according to a mass ratio of (2-4):1, and the component A comprises, by weight, 80-90 parts of an emulsion, 0.5-1 part of a defoamer, 0.5-1 part of a leveling agent, 2-5 parts of deionized water, 0.5-1 part of a wetting defoamer, 5-10 parts of a solvent and 0.3-0.5 part of a rheological additive; and the component B comprises, by weight, 30-40 parts of the solvent and 60-70 parts of hydrophilic diisocyanate. Compared with like products in the prior art, the finish paint of the invention has the characteristics of high hardness, high gloss, quick drying and the like, has high universality in the construction process, has low environmental requirements, and has favorable sagging resistance and prickly heat resistance.

Description

technical field [0001] The invention relates to the field of automotive water-based coatings, in particular to a safe water-based quick-drying two-component high-gloss varnish and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry, my country has become an automobile production country after Europe, America and Japan. The environmental protection problems in automobile coating have already attracted the attention of the country and the public. Automobile coatings have entered the development era with the main purpose of reducing VOC. Coatings and powder coatings will become the development direction of automotive coatings, but powder coatings are stranded due to difficulty in color change, and water-based coatings have become the mainstream technology for current and future automotive coatings. [0003] Water-based industrial coatings are mainly used in the fields of automobiles, railway vehicles, buses, construct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/02C08G18/75C08G18/73C08G18/60C08G18/62
CPCC08G18/4063C08G18/603C08G18/622C08G18/722C08G18/73C08G18/755C09D175/02
Inventor 朱忠敏林在强杨亚和
Owner DONGLAI COATING TECH SHANGHAI