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EP 4 816 471 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24895675.7 (22) Date of filing: 23.07.2024

(51) International Patent Classification (IPC):  C08L 67/02(2006.01) C08G 63/199(2006.01) C08L 83/10(2006.01) C08G 63/183(2006.01) C08K 5/5313(2006.01) C08K 3/34(2006.01) (52) Cooperative Patent Classification (CPC): C08G 63/183; C08L 67/02; C08G 63/199   C-Sets: C08L 67/02, C08K 3/34, C08K 5/5313, C08L 51/085; (86) International application number: PCT/CN2024/106937 (87) International publication number: WO 2025/112572 (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: 29.11.2023 WO PCT/CN2023/134929 (71) Applicant: Eastman Chemical (China) Co., Ltd. Shanghai 201210 (CN)	(72) Inventors: ZHOU, Shuai Shanghai 201210 (CN) AN, Narong Shanghai 201210 (CN) WILLIAMSON, Brandon Robert Shanghai 201210 (CN) (74) Representative: Ricker, Mathias  Wallinger Ricker Schlotter Tostmann Patent- und Rechtsanwälte Partnerschaft mbB Zweibrückenstraße 5-7 80331 München 80331 München (DE)