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EP 4 514 935 A1

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(43) Date of publication: 05.03.2025 Bulletin 2025/10 (21) Application number: 23722544.6 (22) Date of filing: 26.04.2023

(51) International Patent Classification (IPC):  C11D 3/22(2006.01) C11D 3/20(2006.01) C11D 3/37(2006.01) (52) Cooperative Patent Classification (CPC): C11D 3/378; C11D 3/3707; C11D 3/2089; C11D 3/225 (86) International application number: PCT/EP2023/060988 (87) International publication number: WO 2023/209024 (02.11.2023 Gazette 2023/44)

(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: 27.04.2022 EP 22170164 (71) Applicant: Dalli-Werke GmbH & Co. KG 52224 Stolberg (DE)	(72) Inventors: MOL, René 8181CR Heerde (NL) MAHMUD, Khalid 8181CR Heerde (NL) (74) Representative: f & e patent  Braunsberger Feld 29 51429 Bergisch Gladbach 51429 Bergisch Gladbach (DE)