(19)

(11)

EP 4 824 143 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24841015.1 (22) Date of filing: 06.12.2024

(51) International Patent Classification (IPC):  C08G 18/76(2006.01) D01F 6/70(2006.01) D01D 5/08(2006.01) C08G 18/66(2006.01) C08G 18/32(2006.01) (52) Cooperative Patent Classification (CPC): D01F 6/70; C08G 18/7671; C08G 18/664; C08G 18/3206; D01D 5/08; C08G 18/4238 (86) International application number: PCT/US2024/058937 (87) International publication number: WO 2025/128433 (19.06.2025 Gazette 2025/25)

(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: 14.12.2023 US 202363610192 P (71) Applicant: Lubrizol Advanced Materials, Inc. Cleveland, OH 44141-3247 (US)	(72) Inventors: SURAGANI VENU, Lalith Bhargava Cleveland, Ohio 44141-3247 (US) VONTORCIK, JR., Joseph J. Cleveland, Ohio 44141-3247 (US) SOLOUKI BONAB, Vahab Cleveland, Ohio 44141-3247 (US) (74) Representative: Evans, Sophie Elizabeth et al Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)