COATING COMPOSITION FOR ELECTRICAL STEEL SHEET, ELECTRICAL STEEL SHEET WITH ADHESIVE-COATED SURFACE AND LAMINATED CORE Russian patent published in 2024 - IPC C09D163/00 B32B15/92 C08G59/50 C08G59/62 C23C26/00 H01F1/147 H01F3/02 H01F27/245 

FIELD: electrical machines.

SUBSTANCE: invention relates to a coating composition for an electrical steel sheet, to an electrical steel sheet with an adhesive-coated surface, a laminated core. The coating composition contains an epoxy resin, a phenolic hardener (A) and an amine hardener (B), wherein the amine hardener (B) is an aromatic amine, and the amount of the phenolic hardener (A) is 1-40 parts by weight per 100 parts by weight of epoxy resin, and the amount of amine hardener (B) is 0.5-5 parts by mass per 100 parts by mass of epoxy resin.

EFFECT: coating composition for an electrical steel sheet, an electrical steel sheet with an adhesive-coated surface, and a laminated core that are capable of further suppressing stress deformation imparted to the electrical steel sheets and have a heat resistance high enough to maintain adhesive strength even when heat is generated from the motors.

4 cl, 7 dwg, 2 tbl