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(11)

EP 4 824 218 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24801596.8 (22) Date of filing: 11.11.2024

(51) International Patent Classification (IPC):  C11D 1/10(2006.01) C11D 3/37(2006.01) C11D 1/29(2006.01) (52) Cooperative Patent Classification (CPC): C11D 1/10; C11D 1/29; C11D 3/3723 (86) International application number: PCT/EP2024/081814 (87) International publication number: WO 2025/124811 (19.06.2025 Gazette 2025/25)

(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: 14.12.2023 EP 23216589 (71) Applicants: Unilever IP Holdings B.V. 6708 WH Wageningen (NL) AL AT BE BG CH CZ DK EE ES FI FR GR HR HU IS LI LT LU LV MC ME MK NL NO PL PT RO SE SI SK SM  UNILEVER GLOBAL IP LIMITED Wirral Merseyside CH62 4ZD (GB) CY DE GB IE IT MT RS TR

(72) Inventors: APPAVOO, Shanthi 6708 WH Wageningen (NL) MATTAPARTHI, Sahiti 6708 WH Wageningen (NL) (74) Representative: Unilever Patent Group  Bronland 14 6708 WH Wageningen 6708 WH Wageningen (NL)