Novel hydroxy acrylic acid dispersion and application thereof

[0019] Example 1

[0020] (1) Mix 2g of propylene oxide, 3.0g of butylene glycol, 2g of propylene glycol methyl ether acetate, 0.02g of potassium hydroxide, and 2.0g of unsaturated polyester, heat up to 140-145°C, stir and react for 0.5-1h to obtain a reaction mixture;

[0021] (2) To the reaction mixture obtained in step (1), 0.5 g of di-tert-butyl peroxide, 5 g of methyl acrylate, 6 g of methyl methacrylate, and 4 g of butyl acrylate were added dropwise to the reaction mixture obtained in step (1). Continue to add dropwise the remaining 0.5g of di-tert-butyl peroxide, 5g of methyl acrylate, 6g of methyl methacrylate, and 4g of butyl acrylate. After the addition is complete, keep it warm for 1-2h, then cool to 75-80℃, add 4g of N,N dimethylethanolamine was neutralized, and an appropriate amount of deionized water was added to stir and disperse for 1-2 hours, and then the material was discharged to obtain the polyether polyol-unsaturated polyester modified hydroxy acrylic dispersion (hereinafter referred to as Product A).

[0022] Example 2

[0023] (1) Mix 3g of epichlorohydrin, 5.0g of propylene glycol, 3g of propylene glycol methyl ether acetate, 0.03g of potassium hydroxide, and 3.0g of unsaturated polyester, heat up to 140-145°C, stir and react for 0.5-1h to obtain a reaction mixture ;

[0024] (2) Add 1.0 g of dibenzoyl peroxide, 8 g of methyl acrylate, 2 g of methyl methacrylate, 5 g of hydroxyethyl methacrylate, and 5 g of ethyl acrylate to the reaction mixture obtained in step (1). After holding for 1 hour, continue to add the remaining 1.0 g of dibenzoyl peroxide and 8 g of methyl acrylate, 2 g of methyl methacrylate, 5 g of hydroxyethyl methacrylate, and 5 g of ethyl acrylate. After the addition, keep holding for 1-2 hours After that, the temperature was lowered to 75-80°C, 6g of triethylamine was added to neutralize, and an appropriate amount of deionized water was added to stir and disperse for 1-2 hours, and then the material was discharged to obtain the polyether polyol-unsaturated polyester modified hydroxyl group Acrylic dispersion (hereinafter referred to as product B).

[0025] Example 3

[0026] (1) Mix 2.37g of propylene oxide, 3.66g of butanediol, 3g of propylene glycol methyl ether acetate, 0.02g of potassium hydroxide, and 2.21g of unsaturated polyester, heat up to 140-145°C, stir and react for 0.5-1h to obtain Reaction mixture

[0027] (2) To the reaction mixture obtained in step (1), 0.56 g of di-tert-butyl peroxide and acrylic ester monomers (methyl acrylate, methyl methacrylate, and butyl acrylate in a mass ratio of 1: 1:1) 18.0g, after the dripping is completed, after holding for 1h, continue to drip the remaining di-tert-butyl peroxide 0.56g and acrylic monomers (methyl acrylate, methyl methacrylate, butyl acrylate) The mass ratio is 1:1:1) 18.0g, after the dripping is completed, keep for 1-2h, then cool to 75-80℃, add 5.4g of N,N dimethylethanolamine for neutralization, add appropriate amount of deionized water and stir to disperse After 1-2 hours, the material is discharged to obtain the polyether polyol-unsaturated polyester modified hydroxy acrylic dispersion (hereinafter referred to as product C).