(19)

(11)

EP 4 816 503 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24898506.1 (22) Date of filing: 19.11.2024

(51) International Patent Classification (IPC):  C10M 133/16(2006.01) C07C 237/22(2006.01) C07C 231/08(2006.01) (52) Cooperative Patent Classification (CPC): C10M 133/16; C10M 2215/08; C10N 2030/06; C07C 237/08; C07C 237/12; C07C 237/06 (86) International application number: PCT/US2024/056496 (87) International publication number: WO 2025/117247 (05.06.2025 Gazette 2025/23)

(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: 28.11.2023 US 202363603301 P (71) Applicant: Huntsman Petrochemical LLC The Woodlands, TX 77380 (US)	(72) Inventor: ZHAO, Haibo The Woodlands, Texas 77380 (US) (74) Representative: Lee, Alexander Mark  Huntsman (Europe) BV Grijpenlaan 18 3300 Tienen 3300 Tienen (BE)