High-solid coating and preparation method thereof

A high-solid, high-volume paint technology, applied in the field of coatings, can solve the problems of large air pollution and low solid content, and achieve the effects of less solvent volatilization, good weather resistance and storage performance, and high gloss

Inactive Publication Date: 2013-07-10
XUZHOU HUARI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of low solid content of existing acrylic polyurethane coatings and great air pollution, the invention provides a high-solid paint, which is composed of components A and B, wherein the component A contains the following component A Composition in mass percent:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Select 10kg of 50% titanium white pulp, 3kg of polyester resin; 5.4kg of hydroxyl resin; 0.04kg of Byk310; 0.04kg of Byk354; 0.04kg of 5400; 0.2kg of phenyl salicylate; 1.08kg of styrene preparation Component A, and then select 80% HDI trimer 8890 produced by Asahi Kasei Company as a curing agent, mix component A and curing agent uniformly at a ratio of 3.3:1, and dilute with a diluent at room temperature to a viscosity of 15-20 s, after standing for a period of time to defoam, it can be used for spraying.

[0027] The performance test of the high solids paint prepared according to embodiment 1 is as follows:

[0028] Appearance of the original paint: no foreign matter, no lumps, easy to stir into viscous liquid.

[0029] Paint film color and appearance: meet the color difference requirements of the model, smooth and smooth.

[0030] Solid content: ≥72%.

[0031] Fineness: 10μm.

[0032] Viscosity, (Tu-4), s: 68.

[0033] Drying time: surface dry ≤ 60min, hard dry ...

Embodiment 2

[0047] Select 11kg of 50% titanium white paste, 2kg of polyester resin; 5.3kg of hydroxyl resin; 0.03kg of Byk310; 0.03kg of Byk354; 0.03kg of 5400; 0.1kg of phenyl salicylate; 1.11kg of styrene preparation Component A, and then select 80% HDI trimer 8890 produced by Asahi Kasei Company as a curing agent, mix component A and curing agent uniformly at a ratio of 3.3:1, and dilute with a diluent at room temperature to a viscosity of 15-20 s, after standing for a period of time to defoam, it can be used for spraying.

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PUM

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Abstract

The invention relates to the field of coating, and particularly relates to high-solid coating and a preparation method thereof. The high-solid coating comprises an A component and a B component, wherein based on the mass of the A component, the A component comprises the following ingredients in percentage by weight: 48%-55% of titanium white slurry, 10%-15% of polyester resin, 25%-30% of hydroxy resin, 0.1%-0.2% of BYK-310, 0.1%-0.2% of BYK-354, 0.1%-0.2% of defoaming agents 5400, 1%-2% of ultraviolet absorbents and 5%-6% of mixed solvents; and the B component is a curing agent which is 80% of HDI (Hexamethylene Diisocyanate) tripolymers. The high-solid acrylic polyurethane coating disclosed by the invention is prepared by taking high-solid high-hydroxyl low-viscosity hydroxy acrylic resin and polyester resin as main raw materials and has the advantages of high drying rate, high luster, good fullness, mechanical property, chemical resistance, weather resistance and storage property and better environment-friendly significance due to less solvent volatilization.

Description

[0001] technical field [0002] The invention relates to the field of coatings, in particular to a high-solid paint and a preparation method thereof. Background technique [0003] As countries around the world pay more and more attention to the pollution of the atmosphere by volatile organic compounds (VOC), ordinary solvent-based coatings contain more organic solvents, and these solvents all volatilize into the atmosphere during the drying process of the coating film, causing serious pollution problems. Therefore, industrial developed countries have set up special management agencies to formulate various laws and regulations to strictly limit the amount of solvent volatilization during painting. [0004] Acrylic polyurethane coating is a two-component room temperature curing coating. It has the characteristics of fast coating drying rate, short construction period, excellent mechanical properties, aging resistance and chemical resistance of the paint film. It is widely used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D7/12
Inventor 王站
Owner XUZHOU HUARI CHEM IND
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