(19)

(11)

EP 4 472 476 A2

(12)

(88) Date of publication A3: 26.10.2023 (43) Date of publication: 11.12.2024 Bulletin 2024/50 (21) Application number: 23747959.7 (22) Date of filing: 31.01.2023

(51) International Patent Classification (IPC):  A47L 11/40(2006.01) A47L 11/20(2006.01) B08B 3/08(2006.01) G01P 3/44(2006.01) A47L 11/03(2006.01) A61L 2/03(2006.01) B08B 3/10(2006.01) H01M 4/02(2006.01) (52) Cooperative Patent Classification (CPC): C25D 5/06; C25D 17/14; C25D 11/005 (86) International application number: PCT/US2023/061633 (87) International publication number: WO 2023/147577 (03.08.2023 Gazette 2023/31)

(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: 31.01.2022 US 202263305163 P 31.01.2022 US 202263305167 P (71) Applicant: Quaker Chemical Corporation Wilmington, Delaware 19809 (US)	(72) Inventors: MILOSEVIC, Danijela Brecksville, OH 44141 (US) KILGORE, Derek Copley, OH 44321 (US) KERAMPRAN, Patrick 35500 Balaze (FR) BAUDIN, Nicolas 94300 Vincennes (FR) (74) Representative: Boult Wade Tennant LLP  Salisbury Square House 8 Salisbury Square London EC4Y 8AP London EC4Y 8AP (GB)