(19)

(11)

EP 4 771 217 A1

(12)

(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24786819.3 (22) Date of filing: 09.10.2024

(51) International Patent Classification (IPC):  D21H 17/64(2006.01) C08K 3/36(2006.01) D21H 17/00(2006.01) C08K 3/013(2018.01) D21H 17/68(2006.01) (52) Cooperative Patent Classification (CPC): D21H 17/64; D21H 17/68; D21H 17/73; C08K 2201/014; C08K 2201/005; Y02W 30/64   C-Sets: C08K 3/34, C08L 97/02; C08K 3/26, C08L 97/02; (86) International application number: PCT/EP2024/078409 (87) International publication number: WO 2025/078438 (17.04.2025 Gazette 2025/16)

(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 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: 13.10.2023 EP 23203673 (71) Applicant: Omya International AG 4665 Oftringen (CH)	(72) Inventors: FERRAZ, Luis 4600 Olten (CH) KRITZINGER, Johannes 4600 Olten (CH) POHL, Michael 9500 Villach (AT) (74) Representative: Maiwald GmbH  Elisenhof Elisenstraße 3 80335 München 80335 München (DE)