Low-VOC (volatile organic compound) hydroxylated acrylic resin and preparation technology thereof

Abstract

The invention discloses low-VOC (volatile organic compound) hydroxylated acrylic resin and a preparation technology thereof. Raw materials of the hydroxylated acrylic resin comprise a component A, a component B, a component C and a component D in parts by weight, wherein the component A comprises 7-12 parts of xylene, 3-6 parts of butyl acetate and 20-30 parts of polyester resin; the component B comprises 0-1.5 parts of acrylic acid, 0-1.5 parts of methacrylic acid, 8-22 parts of butyl acrylate, 2-4 parts of 2-hydroxyethyl methacrylate, 20-40 parts of styrene, 2-5 parts of isobornyl acrylate, 0-0.8 parts of di-tert-amyl peroxide, 0-2.0 parts of tert-butyl peroxide and 0-0.6 parts of dicumyl peroxide; each of the component C and the component D comprises 0.5-1 part of butyl acetate and 0.1-0.3 parts of tert-butyl peroxide. A product is prepared with a high pressure method. The hydroxylated acrylic resin has higher drying speed and lower VOC, the preparation technology is simple, the production cost is lower, and the application is convenient.

Description

technical field [0001] The invention relates to a hydroxy acrylic resin and a preparation process thereof, in particular to a low-VOC hydroxy acrylic resin and a preparation process thereof. Background technique [0002] As people pay more and more attention to environmental protection, coatings with faster drying speed and lower VOC are increasingly becoming the first choice for home decoration or engineering decoration; solvents for coatings with lower VOC, high solid content and low viscosity Type resin is an important part in the production process of coatings; however, the resin with high solid content and low viscosity often slows down the drying due to the low molecular weight of the synthetic resin during the synthesis process; and the resin with high solid content and low viscosity is basically The high boiling point solvent used above is the reaction system, but the high boiling point solvent will affect the release of the solvent and the drying performance of the ...

AI Technical Summary

Problems solved by technology

[0002] As people pay more and more attention to environmental protection, coatings with faster drying speed and lower VOC are increasingly becoming the first choice for home decoration or engineering decoration; solvents for coatings with lower VOC, high solid content and low viscosity Type resin is an important part in the production process of coatings; however, the resin with high solid content and low viscosity often slows down the drying due to the low molecular weight of the synthetic resin during the synthesis process; and the resin with high solid content and low viscosity is basically The high boiling point solvent used above is the reaction system, but the high boiling point solvent will affect the release of the solvent and the drying performance of the resin in the later stage, and the lower synthesis temperature and pressure in the production process will affect the molecular weight distribution curve. The molecular weight distribution is too wide, so that small molecular polymers exist, which affects the viscosity and performance; because polyester resins often have poor weather resistance, the viscosity of acrylic resins is often high, although the viscosity of acrylic resins can also be made very low, but often when the viscosity When it is low, the performance cannot meet the requirements due to the low aggregation