Low-VOC (volatile organic compound) super-curing repairing varnish and preparation method thereof

A varnish, curing resin technology, applied in the direction of paint, coating, anti-corrosion coating containing biocide, can solve the problems of poor fullness, dry paint film, difficult to consumers, etc., to reduce the content of VOC, paint film Bright, GST-free effect

Active Publication Date: 2018-07-13
GUANGDONG YATU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional varnish not only increases the cost, but also pollutes the environment, making it difficult to be welcomed by co

Method used

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  • Low-VOC (volatile organic compound) super-curing repairing varnish and preparation method thereof
  • Low-VOC (volatile organic compound) super-curing repairing varnish and preparation method thereof
  • Low-VOC (volatile organic compound) super-curing repairing varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0051] Example 1. A fluorine-modified acrylic resin

[0052] The fluorine modified resin is made of the following raw materials in parts by weight:

[0053] 24 parts xylene, 14 parts butyl acetate, 40 parts methyl methacrylate, 20 parts butyl acrylate, 8 parts methacrylic acid, 45 parts hydroxybutyl acrylate, 23 parts vinyl tertiary carbonate, acetoacetic acid methacrylate 6 parts of ethyl ester, 45 parts of dodecafluoroheptyl methacrylate, 8 parts of tert-butyl peroxybenzoate, 4 parts of mercaptoethanol;

[0054] The preparation method of the fluorine-modified acrylic resin:

[0055] S1. Place the four-necked flask in a constant-temperature and constant-speed magnetic stirring oil bath, add xylene and butyl acetate to the four-neck flask, heat up the constant-temperature and constant-speed magnetic stirring oil bath to 116°C, and adjust the speed to 350r / min ;

[0056] S2, then put methyl methacrylate, butyl acrylate, methacrylic acid, hydroxybutyl acrylate, vinyl tertiary carbonate,...

Example Embodiment

[0059] Example 2. A low-VOC super-cured repair varnish

[0060] The low-VOC super-curing repair varnish is prepared by a 2:1 weight ratio of component A and component B;

[0061] The A component consists of the following raw materials in parts by weight:

[0062] Polyol super-cured resin 58.8 parts, fluorine-modified acrylic resin 20 parts, hyperbranched polyester polyol resin 1.2 parts, solvent 20 parts, AFCONA 3700 0.5 parts, dibutyl tin dilaurate 0.05 parts; the solvent is n-butyl acetate Ester, isobutyl acetate and propylene glycol methyl ether acetate are composed of 5:6:9 by volume;

[0063] The B component consists of the following raw materials in parts by weight:

[0064] Covestro 60 parts of N3900, 5 parts of xylene, 35 parts of n-butyl acetate.

[0065] Preparation:

[0066] Step 1. Preparation of component A:

[0067] Put the solvent into the container, then put in the polyol super-cured resin, fluorine-modified acrylic resin and hyperbranched polyester polyol resin, stir eve...

Example Embodiment

[0071] Example 3. A low-VOC super-cured repair varnish

[0072] The low-VOC super-curing repair varnish is prepared by a 2:1 weight ratio of component A and component B;

[0073] The A component consists of the following raw materials in parts by weight:

[0074] 50 parts of polyol super-cured resin, 15 parts of fluorine-modified acrylic resin, 1 part of hyperbranched polyester polyol resin, 16 parts of solvent, 0.1 part of AFCONA 3700, 0.01 part of dibutyltin dilaurate; the solvent is composed of n-butyl acetate Ester, isobutyl acetate and propylene glycol methyl ether acetate are composed of 4:4:6 by volume;

[0075] The B component consists of the following raw materials in parts by weight:

[0076] Covestro 53 parts of N3900, 3 parts of xylene, 32 parts of n-butyl acetate;

[0077] The preparation method is similar to Example 2.

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Abstract

The invention belongs to the technical field of chemical coatings, and particularly relates to low-VOC (volatile organic compound) super-curing repairing varnish and a preparation method thereof. Thelow-VOC super-curing repairing varnish provided by the invention is mainly prepared from a component A and a component B; the component A is mainly prepared from polyol super-curing resin, fluoro-modified acrylic resin, overbranched polyester polyol resin, a solvent, a leveling agent and an organic tin dryer; the component B is mainly prepared from low-viscosity aliphatic polyisocyanate, xylene and n-butyl acetate. The low-VOC super-curing repairing varnish provided by the invention can reduce the VOC content using use of coating and relieve the environmental pollution; furthermore, the low-VOC super-curing repairing varnish also has the advantages of formation of a bright varnish film, high fullness, high hardness, scratching resistance, aging resistance, straining resistance and the likein a use process.

Description

technical field [0001] The invention belongs to the technical field of chemical coatings, and in particular relates to a low-VOC super-cured repair varnish and a preparation method thereof. technical background [0002] Due to people's insufficient anticipation of the negative impact of highly developed industries, it has led to three global crises: resource shortage, environmental pollution, and ecological destruction. Energy conservation, emission reduction, and environmental protection have become the direction of the common efforts of all mankind in the 21st century. VOC (volatile organic compounds), namely volatile organic compounds, as a non-negligible culprit of environmental pollution, is one of the substances severely restricted by various countries, and has a huge impact on human health. When VOC reaches a certain concentration, it will cause headache, nausea, vomiting and fatigue in a short time, and in severe cases, convulsions, coma and other symptoms will occu...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/16C09D5/08C09D7/20C09D7/63C09D7/47
CPCC08K5/57C09D5/08C09D5/1687C09D175/04
Inventor 冯兆华谭立斌王广坤陈容爱赵立英
Owner GUANGDONG YATU CHEM
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