A kind of hydrophobic stain-resistant functional solid acrylic matting resin

A technology of solid acrylic and matting resin, which is applied in the direction of antifouling/underwater coatings, powder coatings, paints containing biocides, etc., which can solve the problems of frequent cleaning of coatings, shortening the service life, etc., and achieve smoothness and hydrophobicity Improved stain resistance, extended service life, and avoiding frequent cleaning

Active Publication Date: 2019-04-05
六安科瑞达新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is well known that coatings for outdoor applications are vulnerable to rain and pollutants in the air, resulting in frequent cleaning and repeated abrasion of the coating, thereby shortening the service life

Method used

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  • A kind of hydrophobic stain-resistant functional solid acrylic matting resin
  • A kind of hydrophobic stain-resistant functional solid acrylic matting resin
  • A kind of hydrophobic stain-resistant functional solid acrylic matting resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 40g of glycidyl methacrylate, 100g of methyl methacrylate, 50g of ethyl methacrylate, 10g of styrene, and 3.5g of phthaloyl peroxide were prepared as a dropwise mixed solution. Add 200g of xylene into a 1000ml three-necked flask and heat up and stir. After the solvent refluxes, start to add the mixed solution dropwise. After about 2.5-3h, the dropwise addition is completed, and the reflux reaction is continued for 2h. Add 0.5g of phthaloyl peroxide, and then Continue to reflux for 3h. Evaporate the solvent under reduced pressure, the temperature does not exceed 180°C, discharge the material while it is hot, cool, and coarsely pulverize to obtain 201g of epoxy acrylic matting resin 1, the glass transition temperature is 78.5°C, and the number average molecular weight is about 9055, the epoxy equivalent is 709 grams / equivalent.

Embodiment 2

[0021] Formulate 6g of trifluoroethyl acrylate, 44g of glycidyl methacrylate, 100g of methyl methacrylate, 40g of ethyl methacrylate, 10g of styrene, and 3.5g of phthaloyl peroxide The mixed solution was added dropwise. Add 200g of cyclohexanone into a 1000ml three-neck flask and heat up and stir. After the solvent refluxes, start to add the mixed solution dropwise. After about 2.5-3h, the dropwise addition is completed. Continue to reflux for 2h, and add 0.5g of phthaloyl peroxide. Continue to reflux reaction for 3h. Evaporate the solvent under reduced pressure, the temperature does not exceed 180°C, discharge the material while it is hot, cool, and coarsely pulverize to obtain 199g of epoxy acrylic matting resin 2, the glass transition temperature is 74°C, and the number average molecular weight is about 9550, the epoxy equivalent is 640 g / equivalent.

Embodiment 3

[0023] 10g of trifluoroethyl acrylate, 40g of glycidyl methacrylate, 100g of methyl methacrylate, 40g of ethyl methacrylate, 10g of styrene, 3.5g of phthaloyl peroxide The mixed solution was added dropwise. Add 200g of cyclohexanone into a 1000ml three-neck flask and heat up and stir. After the solvent refluxes, start to add the mixed solution dropwise. After about 2.5-3h, the dropwise addition is completed. Continue to reflux for 2h, and add 0.5g of phthaloyl peroxide. Continue to reflux reaction for 3h. Evaporate the solvent under reduced pressure, the temperature does not exceed 180°C, discharge the material while it is hot, cool, and coarsely pulverize to obtain 199g of epoxy acrylic matting resin 3, the glass transition temperature is 35°C, and the number average molecular weight is about 7500, the epoxy equivalent is 550 g / equivalent.

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Abstract

The invention provides a solid acrylic matting resin with hydrophobic and antifouling functions. Other ethylenic monomers are free-radically copolymerized into modified solid epoxy-based acrylic matting resins. The modified solid epoxy-based acrylic type matting resin provided by the invention is used in outdoor powder coatings, and the resulting coating film can not only meet people's requirements for low-gloss appearance, but also improve the smoothness and hydrophobic stain resistance of the coating film. Significant improvement.

Description

technical field [0001] The invention relates to the technical field of matting agents for powder coating compositions, in particular to a modified epoxy-based acrylic type matting resin suitable for powder coating compositions. Background technique [0002] Epoxy acrylic solid acrylic resin can be used as a matting curing agent for saturated carboxyl polyester, and is one of the main materials for producing outdoor matting powder coatings. This type of powder coating is generally used on automobiles, home appliances, outdoor building materials, ships, outdoor sports equipment and other objects. The formed coating film can meet the weather resistance and comfortable matt appearance of outdoor applications at the same time. However, it is well known that coatings for outdoor applications are vulnerable to rain and pollutants in the air, resulting in frequent cleaning and repeated abrasion of the coating, thereby shortening the service life. Contents of the invention [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/22C08F220/32C08F212/08C08F2/06C09D167/00C09D5/03C09D5/16C09D7/42
CPCC09D167/00C08F2/06C08F220/14C08F220/18C09D5/033C09D5/1687C08L2205/03C08L33/12C08L33/10C08F220/325C08F212/08C08F220/22C08F220/1802
Inventor 鲍远志翁世兵
Owner 六安科瑞达新型材料有限公司
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