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EP 4 562 205 A1

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(43) Date of publication: 04.06.2025 Bulletin 2025/23 (21) Application number: 23745525.8 (22) Date of filing: 25.07.2023

(51) International Patent Classification (IPC):  C22B 1/02(2006.01) C22B 3/44(2006.01) C22B 11/00(2006.01) C22B 3/06(2006.01) C22B 7/00(2006.01) (52) Cooperative Patent Classification (CPC): C22B 1/02; C22B 3/44; C22B 7/007; C22B 3/06; C22B 11/048; Y02P 10/20 (86) International application number: PCT/EP2023/070520 (87) International publication number: WO 2024/023055 (01.02.2024 Gazette 2024/05)

(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: 26.07.2022 EP 22187068 (71) Applicants: Solvay SA 1120 Brussels (BE) PEROXIDOS DO BRASIL LTDA. 81460-100 Curitiba PR (BR)	(72) Inventors: TITERICZ, Leonardo 81460-100 Curitiba (BR) DHAESE, Patrick Markus 81460-100 Curitiba (BR) LEMAIRE, Arnaud 1120 Brussels (BE) PETRUY, Rafael 81460-100 Curitiba (BR) (74) Representative: Kraus & Lederer PartGmbB  Thomas-Wimmer-Ring 15 80539 München 80539 München (DE)