US 11,807,773 B2
Multi-phase structured UV-curable powder coating resin and preparation method thereof
Jirui Song, Guangdong (CN); and Ming Wu, Guangdong (CN)
Assigned to FOSHAN YIKEJU NEW MATERIAL CO., LTD., Foshan (CN); and JIANGSU RAP RESIN TECHNOLOGY CO., LTD., Nantong (CN)
Appl. No. 17/912,519
Filed by FOSHAN YIKEJU NEW MATERIAL CO., LTD., Guangdong (CN); and JIANGSU RAP RESIN TECHNOLOGY CO., LTD., Jiangsu (CN)
PCT Filed Mar. 31, 2021, PCT No. PCT/CN2021/084740
§ 371(c)(1), (2) Date Sep. 18, 2022,
PCT Pub. No. WO2022/048148, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 202010925779.3 (CN), filed on Sep. 7, 2020.
Prior Publication US 2023/0136069 A1, May 4, 2023
Int. Cl. C09D 175/16 (2006.01); C09D 5/03 (2006.01); C09D 167/06 (2006.01)
CPC C09D 175/16 (2013.01) [C09D 5/033 (2013.01); C09D 167/06 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for preparing a multi-phase structured UV-curable powder coating resin, comprising:
(1) obtaining an emulsion of a liquid UV resin by heating the liquid UV resin and an emulsifier, dispersing and adding deionized water for emulsification;
(2) melting and dispersing a solid UV resin, a phase change agent, an emulsifier, and the deionized water until fully molten and homogeneously dispersed; adding the emulsion of the liquid UV resin with stirring to thoroughly mix; temperature is lowered during the stirring to obtain a suspension of the multi-phase structured UV-curable powder coating resin;
(3) press filtering the suspension of the UV-curable powder coating resin to obtain a filter cake;
(4) drying and classifying the filter cake to obtain the multi-phase structured UV-curable powder coating resin.