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EP 4 569 060 A1

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(43) Date of publication: 18.06.2025 Bulletin 2025/25 (21) Application number: 22758131.1 (22) Date of filing: 11.08.2022

(51) International Patent Classification (IPC):  C11D 1/66(2006.01) C11D 3/34(2006.01) C11D 3/36(2006.01) (52) Cooperative Patent Classification (CPC): C11D 1/66; C11D 3/364; C11D 3/3765; C11D 3/3418; C11D 2111/14 (86) International application number: PCT/CN2022/111693 (87) International publication number: WO 2024/031514 (15.02.2024 Gazette 2024/07)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Ecolab USA, Inc. St. Paul, Minnesota 55102 (US)	(72) Inventors: LU, Xin Minnesota, Minnesota 55102 (US) PEITERSEN, Nathan D. Saint Paul, Minnesota 55102 (US) GUO, Yi Saint Paul, Minnesota 55102 (US) (74) Representative: Pott, Thomas  ETL IP Köln Patentanwaltsgesellschaft mbH Eiler Straße 3B 51107 Köln 51107 Köln (DE)