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EP 4 323 149 A1

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(43) Date of publication: 21.02.2024 Bulletin 2024/08 (21) Application number: 22789001.9 (22) Date of filing: 15.04.2022

(51) International Patent Classification (IPC):  B24D 3/00(2006.01) C09K 3/14(2006.01) B24D 11/00(2006.01) (52) Cooperative Patent Classification (CPC): C09K 3/1409 (86) International application number: PCT/US2022/024992 (87) International publication number: WO 2022/221646 (20.10.2022 Gazette 2022/42)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 16.04.2021 US 202163201182 P (71) Applicant: 3M Innovative Properties Company Saint Paul, Minnesota 55133-3427 (US)

(72) Inventors: LIU, Yuyang Saint Paul, Minnesota 55133-3427 (US) THURBER, Ernest L. Saint Paul, Minnesota 55133-3427 (US) ECKEL, Joseph B. Saint Paul, Minnesota 55133-3427 (US) NELSON, Thomas J. Saint Paul, Minnesota 55133-3427 (US) LUKOWSKI, Mark A. Saint Paul, Minnesota 55133-3427 (US) ERICKSON, Dwight D. Saint Paul, Minnesota 55133-3427 (US) (74) Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB  Siebertstraße 4 81675 München 81675 München (DE)