公开(公告)号：US20240294812A1

公开(公告)日：2024-09-05

申请号：US18571940

申请日：2022-04-28

Applicant: SIKA JAPAN LTD. ,  NIPPON STEEL CORPORATION

Inventor： Kazunori ISHIKAWA ,  Tsubasa ITO ,  Takashi ARAMAKI ,  Hiroshi OISHI

IPC: C09J163/00 ,  C09J11/06 ,  C09J11/08

CPC classification number: C09J163/00 ,  C09J11/06 ,  C09J11/08

Abstract: An adhesive composition is provided for laminating an electromagnetic steel sheet, including an epoxy resin (AA) containing an epoxy resin (A) having equal to or more than 3 epoxy groups in one molecule, a phenoxy resin (B) having a glass transition temperature exceeding 120° C. in an uncured state in differential scanning calorimetry, and an amine-based latent curing agent (C), wherein the epoxy resin (A) contains an epoxy resin having a softening temperature equal to or higher than 60° C., a content of the phenoxy resin (B) is 20 to 80 parts by mass based on 100 parts by mass of the epoxy resin (AA), and a glass transition temperature of the resulting adhesive cured product in differential scanning calorimetry exceeds 160° C.