High-solid high-weather-resistance acrylic varnish and preparation method thereof

An acrylic varnish and weather-resistant technology, which is applied in coatings and other directions, can solve the problems of low solid content in varnish construction, high VOC emissions, and large environmental pollution, and achieve the effects of reducing varnish quality, saving energy consumption, and increasing film thickness during construction

Inactive Publication Date: 2022-04-05
HAOLISEN COATING SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As national laws and regulations have stricter requirements on environmental protection, human health has higher and higher requirements on the coating environment. However, the traditional acrylic varnish requires a large amount of diluent, which generally reaches 20% to 40% by mass. %, in the case of such a large amount of thinner mixed in, the varnish is likely to cause low solid content in construction, resulting in high VOC emissions and greater environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The embodiment of the present invention provides a kind of preparation method of high solid high weather resistance varnish, comprising the following steps:

[0016] Mix the acrylic resin with a solid content of more than 65% with the solvent, add the dispersant and defoamer, then continue to add the amino resin and functional resin with a solid content of more than 70%; after high-speed dispersion for 30 minutes, add leveling aids and weathering aids disperse at a high speed of 800r / min for 30min under airtight conditions at room temperature, and mix evenly to obtain paint A1 with a solid content of more than 70% in the original paint.

Embodiment 2

[0018] The preparation method is the same as in Example 1, the only difference is that the paint uses other acrylic resins, amino resins and corresponding functional resins with a solid content >70%. Paint A2 is obtained.

Embodiment 3

[0020] The preparation method is the same as in Example 1, except that the selected high-solid resins are acrylic resins and amino resins produced by other manufacturers. Get paint A3.

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PUM

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Abstract

The invention relates to the technical field of low-carbon-emission environment-friendly coatings, in particular to high-solid high-weather-resistance acrylic varnish and a preparation method thereof.The formula of the high-solid high-weather-resistance acrylic varnish comprises, by mass, 40%-60% of acrylic polymers, 10%-20% of acrylic functional modified resin, 5%-10% of acrylic polyurethane functional resin, 10%-20% of amino resin and 0.1%-1% of defoaming agents, 0.5%-2% of a leveling wetting agent and a weather-proof auxiliary agent; and 10%-20% of a diluting solvent. Compared with the prior art, the invention has the advantages that the addition amount of the diluent is only 0-5% of the mass of the paint, the VOC emission is only 320g / L which is far lower than the national requirement, the environment-friendly benefit is better, the construction efficiency is high, and the energy consumption is saved.

Description

technical field [0001] The invention relates to the technical field of low-carbon emission environmental coatings, in particular to a high-solid and high-weather resistance acrylic varnish and a preparation method thereof. Background technique [0002] As national laws and regulations have stricter requirements on environmental protection, human health has higher and higher requirements on the coating environment. However, traditional acrylic varnishes require a large amount of diluent, which generally reaches 20% to 40% by mass. %, in the case of such a large amount of thinner mixed in, the varnish is likely to cause low construction solid content, resulting in higher VOC emissions and greater environmental pollution. Contents of the invention [0003] The purpose of the present invention is to solve the deficiencies of the prior art and provide an environmentally friendly coating with low VOC emissions. [0004] In order to achieve the above object, the first aspect of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D161/20C09D7/65
Inventor 周贤陈运亭刘薇薇赵颖邹文博张春香
Owner HAOLISEN COATING SHANGHAI
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