(19)

(11)

EP 4 680 784 A1

(12)

(43) Date of publication: 21.01.2026 Bulletin 2026/04 (21) Application number: 24718947.5 (22) Date of filing: 12.03.2024

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 9/23(2021.01) C25B 13/08(2006.01) C25B 9/19(2021.01) C25B 13/07(2021.01) (52) Cooperative Patent Classification (CPC): C25B 13/07; C25B 13/08; C25B 9/23; C25B 1/04; C25B 9/19; Y02E 60/36 (86) International application number: PCT/US2024/019498 (87) International publication number: WO 2024/191979 (19.09.2024 Gazette 2024/38)

(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: GE KH MA MD TN (30) Priority: 13.03.2023 US 202363451655 P (71) Applicant: The Chemours Company FC, LLC Wilmington, Delaware 19801 (US)	(72) Inventor: UNLU, Murat Newark, Delaware 19713 (US) (74) Representative: Abitz & Partner  Postfach 86 01 09 81628 München 81628 München (DE)