(19)

(11)

EP 4 680 652 A1

(12)

(43) Date of publication: 21.01.2026 Bulletin 2026/04 (21) Application number: 24726937.6 (22) Date of filing: 07.05.2024

(51) International Patent Classification (IPC):  C08B 30/12(2006.01) C08L 3/02(2006.01) (52) Cooperative Patent Classification (CPC): C08B 30/12; C08L 3/02 (86) International application number: PCT/EP2024/025158 (87) International publication number: WO 2024/230950 (14.11.2024 Gazette 2024/46)

(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: GE KH MA MD TN (30) Priority: 08.05.2023 US 202363464666 P 15.09.2023 US 202363538546 P (71) Applicant: ROQUETTE FRERES 62136 Lestrem (FR)	(72) Inventors: CHENG, Rongzhu Geneva, IL 60134 (US) ZHOU, Liuming Geneva, IL 60134 (US) POMBERT, Cameron Gilberts, IL 60136 (US) (74) Representative: Plasseraud IP  104 Rue de Richelieu CS92104 75080 Paris Cedex 02 75080 Paris Cedex 02 (FR)