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EP 4 551 398 A1

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(43) Date of publication: 14.05.2025 Bulletin 2025/20 (21) Application number: 23748155.1 (22) Date of filing: 05.07.2023

(51) International Patent Classification (IPC):  B32B 5/02(2006.01) B32B 15/14(2006.01) (52) Cooperative Patent Classification (CPC): B32B 15/14; B32B 15/20; B32B 5/024; B32B 17/04; B32B 2260/021; B32B 2260/046; B32B 2262/101; B32B 2250/40; B32B 2264/1021; B32B 2264/1022; B32B 2264/10; B32B 2264/02; B32B 2457/08; B32B 2307/204 (86) International application number: PCT/US2023/026893 (87) International publication number: WO 2024/010787 (11.01.2024 Gazette 2024/02)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 06.07.2022 US 202263358566 P 19.12.2022 US 202263433620 P (71) Applicant: The Chemours Company FC, LLC Wilmington, Delaware 19801 (US)

(72) Inventors: AMOS, Brian WORCESTER, Massachusetts 01609 (US) FRANKOSKY, John C. LANDENBERG, Pennsylvania 19350 (US) HULSEBOSCH, Franciscus Cornelis Joannes 01170 CESSY (FR) KENNEDY, Scott NEWARK, Delaware 19711 (US) LIU, Xiaolin LANDENBERG, Pennsylvania 19350 (US) WANG, Ying NEW CASTLE, Delaware 19720 (US) YOUNG, Robert Thomas New Castle, Delaware 19720 (US) (74) Representative: Abitz & Partner  Postfach 86 01 09 81628 München 81628 München (DE)