US 12,319,780 B2
Epoxy resin system having phase separation structure, preparation method therefor and application thereof
Li Yuan, Suzhou (CN); Aijuan Gu, Suzhou (CN); and Guozheng Liang, Suzhou (CN)
Assigned to SOOCHOW UNIVERSITY, Suzhou (CN)
Appl. No. 17/785,451
Filed by SOOCHOW UNIVERSITY, Suzhou (CN)
PCT Filed Dec. 15, 2019, PCT No. PCT/CN2019/125459
§ 371(c)(1), (2) Date Jun. 15, 2022,
PCT Pub. No. WO2021/119874, PCT Pub. Date Jun. 24, 2021.
Prior Publication US 2023/0024059 A1, Jan. 26, 2023
Int. Cl. C08G 59/24 (2006.01); C08G 59/42 (2006.01); C08G 59/50 (2006.01); C08K 5/07 (2006.01); C08K 5/1515 (2006.01)
CPC C08G 59/245 (2013.01) [C08G 59/42 (2013.01); C08G 59/50 (2013.01); C08K 5/07 (2013.01); C08K 5/1515 (2013.01); C08G 2280/00 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method of preparing an epoxy resin system having phase separation structure comprising,
mixing an epoxy resin, an amine curing agent, and an epoxy diluent to obtain a prepolymer 1;
mixing the epoxy resin, an acid anhydride curing agent and a promoter to obtain a prepolymer 2; and
mixing the prepolymer 1 and the prepolymer 2 and polymerizing to obtain the epoxy resin system having phase separation structure,
wherein the epoxy resin, the amine curing agent, and the epoxy diluent are mixed in a weight ratio of 100:30:10 at room temperature to 120° C. for 20 minutes to obtain the prepolymer 1.