Title:
ADHESIVE RESIN COMPOSITION-COATED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/024835
Kind Code:
A1
Abstract:
An adhesive resin composition-coated electromagnetic steel sheet comprising: a steel sheet; and an adhesive resin composition film on at least one surface of the steel sheet, wherein the adhesive resin composition film is a semi-cured product of an adhesive resin composition composed of a curing agent and an adhesive resin containing at least partially a thermosetting resin, the maximum penetration λ of the adhesive resin composition film at 100-300°C is at least 3% and less than 100%, as measured by thermomechanical analysis according to JIS K 7196:2012, a portion of the curing agent in the adhesive resin composition film is present in a crystalline state, and the area ratio of the curing agent in the crystalline state in a cross section, parallel to the surface of the steel sheet, of the adhesive resin composition film is 0.10-40%.
Inventors:
ARAMAKI TAKASHI (JP)
SUZUKI YUKI (JP)
OISHI HIROSHI (JP)
SUZUKI YUKI (JP)
OISHI HIROSHI (JP)
Application Number:
PCT/JP2023/027380
Publication Date:
February 01, 2024
Filing Date:
July 26, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C09J201/00; C09J7/28; C09J11/06; C09J133/04; C09J163/00; C09J167/00; C09J175/04; C23C26/00; H01F1/147; H01F1/18; H01F27/24; H01F41/02
Domestic Patent References:
| WO2022270154A1 | 2022-12-29 |
Foreign References:
| JPH02208034A | 1990-08-17 | |||
| JPH0238042A | 1990-02-07 | |||
| JPH07308990A | 1995-11-28 | |||
| JP2009218351A | 2009-09-24 |
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
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