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EP 4 228 996 A1

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(43) Date of publication: 23.08.2023 Bulletin 2023/34 (21) Application number: 21881029.9 (22) Date of filing: 13.10.2021

(51) International Patent Classification (IPC):  B82Y 30/00(2011.01) C09D 11/02(2014.01) C08K 3/04(2006.01) C09D 11/52(2014.01) C09D 11/03(2014.01) (52) Cooperative Patent Classification (CPC): B82Y 30/00; C09D 11/03; C09D 11/52; C09D 11/101; C09D 11/102; C09D 11/104; C09D 11/107; C08K 3/041 (86) International application number: PCT/US2021/054845 (87) International publication number: WO 2022/081756 (21.04.2022 Gazette 2022/16)

(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: 13.10.2020 US 202063090956 P (71) Applicant: Chasm Advanced Materials, Inc. Canton, MA 02021 (US)	(72) Inventors: HU, Ziyi Acton, MA 01720 (US) PRAINO, Robert, F. Westwood, MA 02090 (US) ARTHUR, David, J. Norwood, MA 02062 (US) FERGUSON, John, H. Attleboro, MA 02703 (US) ARTHUR, Sean, P. Boston, MA 02124 (US) (74) Representative: CSY Herts  Helios Court 1 Bishop Square Hatfield, Hertfordshire AL10 9NE Hatfield, Hertfordshire AL10 9NE (GB)