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Waterborne two-component polyurethane transparent light varnish and preparation method and application thereof

A water-based two-component polyurethane technology, which is applied in the fields of plastic, wood, metal, and glass varnishes, can solve the problems of poor fullness of water-based glossy varnishes, damage the health of construction workers, and pollute the atmospheric environment, and achieve good post-leveling performance , The mirror effect of the paint film is good, and the effect of high gloss

Inactive Publication Date: 2012-04-04
AODA KOALA PAINT HUIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, this kind of decorative material is mostly solvent-based paint. Since solvent-based paint contains a large amount of volatile compounds (VOC), VOC volatilizes during construction, which will damage the health of construction personnel, and will also destroy the ozone layer and pollute the environment. Atmospheric Environment
Now, the world has begun to advocate the use of water-based paints for environmentally friendly painting, but glossy paints have encountered great resistance due to technical limitations
The main reason is that the water-based gloss varnish has problems such as poor fullness, low gloss and poor leveling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A water-based two-component polyurethane transparent glossy varnish, the weight percentage of each component is composed of 65 parts of hydroxyl-containing polymer emulsion, 17 parts of polyurethane emulsion, 5-7 parts of acrylic emulsion, 2-7 parts of alcohol ether solvent, 0.4-0.9 parts of defoaming aids, 0.4-0.7 parts of leveling aids, and 1-2 parts of thickeners. In the preparation method, put hydroxyl-containing polymer emulsion, polyurethane emulsion, and acrylic emulsion into the dispersing tank, start the dispersing tank, 900 rpm, put in part of the defoaming aid while stirring, and turn to high-speed dispersion for 15- After 20 minutes, disperse evenly. After detecting no oil pockets, put alcohol ether solvents, leveling aids, another part of defoaming aids, and thickeners into the dispersion tank. After feeding, disperse for 5-8 minutes. In construction application, polyurethane transparent gloss varnish is combined with special varnish curing agent and water ...

Embodiment 2

[0018] A water-based two-component polyurethane transparent glossy varnish, the weight percentage of each component is composed of 70 parts of hydroxyl-containing polymer emulsion, 15 parts of polyurethane emulsion, 5-7 parts of acrylic emulsion, 2-7 parts of alcohol ether solvent, 0.4-0.9 parts of defoaming aids, 0.4-0.7 parts of leveling aids, and 1-2 parts of thickeners. In the preparation method, put hydroxyl-containing polymer emulsion, polyurethane emulsion, and acrylic emulsion into the dispersing tank, start the dispersing tank, 900 rpm, put in part of the defoaming aid while stirring, and turn to high-speed dispersion for 15- After 20 minutes, disperse evenly. After detecting no oil pockets, put alcohol ether solvents, leveling aids, another part of defoaming aids, and thickeners into the dispersion tank. After feeding, disperse for 5-8 minutes. In construction application, polyurethane transparent gloss varnish is mixed with special varnish curing agent and water to ...

Embodiment 3

[0020] A water-based two-component polyurethane transparent glossy varnish, the weight percentage of each component is composed of 75 parts of hydroxyl-containing polymer emulsion, 13 parts of polyurethane emulsion, 5-7 parts of acrylic emulsion, 2-7 parts of alcohol ether solvent, 0.4-0.9 parts of defoaming aids, 0.4-0.7 parts of leveling aids, and 1-2 parts of thickeners. In the preparation method, put hydroxyl-containing polymer emulsion, polyurethane emulsion, and acrylic emulsion into the dispersing tank, start the dispersing tank, 900 rpm, put in part of the defoaming aid while stirring, and turn to high-speed dispersion for 15- After 20 minutes, disperse evenly. After detecting no oil pockets, put alcohol ether solvents, leveling aids, another part of defoaming aids, and thickeners into the dispersion tank. After feeding, disperse for 5-8 minutes. In construction application, polyurethane transparent gloss varnish is combined with special varnish curing agent and water ...

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PUM

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Abstract

The invention belongs to the field of chemical industry, and particularly discloses waterborne two-component polyurethane transparent light varnish as well as a preparation method and an application thereof, and the varnish comprises the following components by weight: 64.4-80 parts of polymer emulsion containing hydroxy, 5-18 parts of polyurethane emulsion, 5-7 parts of acrylic acid emulsion, 2-7 parts of alcohol and ethers solvents, 0.4-0.9 parts of defoaming auxiliary agents, 0.4-0.7 parts of leveling agents and 1-2 parts of thickening agents. The two-component polyurethane transparent light varnish has the characteristics of good fullness, high luster and good leveling performance.

Description

technical field [0001] The invention relates to the technical field of chemical industry, more specifically, the invention relates to a varnish for wood, metal, plastic and glass. Background technique [0002] Paint or coatings are decorative materials commonly used in modern human life. At present, this kind of decorative material is mostly solvent-based paint. Since solvent-based paint contains a large amount of volatile compounds (VOC), VOC volatilizes during construction, which will damage the health of construction personnel, and will also destroy the ozone layer and pollute the environment. Atmospheric Environment. Now, the world has begun to advocate the use of water-based paints for environmentally friendly painting, but glossy paints have encountered great resistance due to technical limitations. The main reason is that the water-based gloss varnish has problems such as poor fullness, low gloss and poor leveling. For example, Chinese patent CN102051112A discloses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D133/00C09D7/06C09D7/47
Inventor 陈日云
Owner AODA KOALA PAINT HUIZHOU
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