Title:
COATING COMPOSITION FOR ELECTROMAGNETIC STEEL SHEETS, ELECTROMAGNETIC STEEL SHEET, LAMINATED CORE, AND ROTATORY ELECTRICAL MACHINE
Document Type and Number:
WIPO Patent Application WO/2021/256536
Kind Code:
A1
Abstract:
An electromagnetic steel sheet to be used for a laminated core, the electromagnetic steel sheet having, on the surface of a base material steel sheet 2, an insulative coating film 3 on which a coating composition for electromagnetic steel sheets is applied, wherein the coating composition for electromagnetic steel sheets contains an epoxy resin, an epoxy resin curing agent, and an elastomer modified phenol resin, and the contained amount of the elastomer modified phenol resin is 10-100 parts by mass with respect to 100 parts by mass of the epoxy resin.
Inventors:
TAKEDA KAZUTOSHI (JP)
TAKATANI SHINSUKE (JP)
FUKUCHI MINAKO (JP)
TANAKA ICHIRO (JP)
TAKATANI SHINSUKE (JP)
FUKUCHI MINAKO (JP)
TANAKA ICHIRO (JP)
Application Number:
PCT/JP2021/023039
Publication Date:
December 23, 2021
Filing Date:
June 17, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C09D5/25; B32B15/092; C09D161/14; C09D163/00; C23C26/00; H01F1/18; H01F27/245; H02K1/04
Domestic Patent References:
| WO2017085797A1 | 2017-05-26 | |||
| WO2004070080A1 | 2004-08-19 | |||
| WO2004070080A1 | 2004-08-19 |
Foreign References:
| JP2020070393A | 2020-05-07 | |||
| JP2000173816A | 2000-06-23 | |||
| JPS54164456U | 1979-11-17 | |||
| JP2020104254A | 2020-07-09 | |||
| JP2017011863A | 2017-01-12 | |||
| JP2000173816A | 2000-06-23 |
Other References:
See also references of EP 4169986A4
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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