(19)

(11)

EP 4 580 987 A1

(12)

(43) Date of publication: 09.07.2025 Bulletin 2025/28 (21) Application number: 23768179.6 (22) Date of filing: 01.09.2023

(51) International Patent Classification (IPC):  C01B 25/22(2006.01) C01B 25/238(2006.01) B01J 20/00(2006.01) (52) Cooperative Patent Classification (CPC): C01B 25/22; C01B 25/238; B01J 20/045; B01J 20/28016 (86) International application number: PCT/EP2023/074029 (87) International publication number: WO 2024/047228 (07.03.2024 Gazette 2024/10)

(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: 02.09.2022 US 202263403326 P (71) Applicant: Cytec Industries Inc. Lawrence, NJ 08648 (US)	(72) Inventors: ZHANG, Lei Stamford, Connecticut 06902 (US) HIREMATH, Ravi Rajshekar Stamford, Connecticut 06902 (US) WANG, Kewei Shanghai 201108 (CN) TOKMIC, Kenan Stamford, CT 06902 (US) (74) Representative: Roussel, Sandrine  Specialty Operations France Intellectual Assets Management 52, rue de la Haie Coq 93306 Aubervilliers Cedex 93306 Aubervilliers Cedex (FR)