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EP 4 740 250 A1

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(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 23943977.1 (22) Date of filing: 03.07.2023

(51) International Patent Classification (IPC):  H01M 4/62(2006.01) C08L 67/04(2006.01) H01M 4/1391(2010.01) (52) Cooperative Patent Classification (CPC): Y02E 60/10; C08L 67/04; H01M 4/62; H01M 4/1391; C08K 3/04; C08K 3/041; C08K 3/042; C08K 3/045; C08K 3/046; C08K 3/22; C08K 5/3415; C08G 63/08; H01M 4/625; H01M 4/525; H01M 4/505; H01M 4/131   C-Sets: C08K 3/042, C08L 79/08; C08K 3/045, C08L 79/08; C08K 3/046, C08L 79/08; C08K 3/22, C08L 79/08; C08K 5/3415, C08L 79/08; C08L 67/04, C08L 79/02, C08K 5/1515; C08L 67/04, C08L 67/04, C08L 79/02, C08K 5/1515; C08K 3/04, C08L 79/08; C08K 3/041, C08L 79/08; (86) International application number: PCT/CN2023/105528 (87) International publication number: WO 2025/007243 (09.01.2025 Gazette 2025/02)

(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 (71) Applicant: BYK-Chemie GmbH 46483 Wesel (DE)	(72) Inventors: VON HAGEN, Robin 46483 Wesel (DE) TAKAI, Megumu 46483 Wesel (DE) WEISS, Sebastian 46483 Wesel (DE) SAMOL, David 46483 Wesel (DE) YANG, Xin 46483 Wesel (DE) SUGIOKA, Yu 46483 Wesel (DE) (74) Representative: Altana IP Department  Altana Management Services GmbH Abelstraße 45 46483 Wesel 46483 Wesel (DE)