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(11)

EP 4 824 614 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 23837136.3 (22) Date of filing: 14.12.2023

(51) International Patent Classification (IPC):  G03F 7/004(2006.01) C08G 73/10(2006.01) G03F 7/42(2006.01) (52) Cooperative Patent Classification (CPC): G03F 7/0048; G03F 7/425; C08G 73/1032; C08G 73/1071; C08G 73/1053; C08G 73/1039 (86) International application number: PCT/CN2023/138692 (87) International publication number: WO 2025/123268 (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: KH MA MD TN (71) Applicants: Dow Global Technologies LLC Midland, MI 48674 (US) DOW CHEMICAL KOREA LIMITED Seoul 06170 (KR)	(72) Inventors: GUI, Qinyuan Shanghai 201203 (CN) SHEN, Cheng Shanghai 201203 (CN) REN, Hua Shanghai 201203 (CN) KIM, Jongcheol Seoul 06170 (KR) SHIN, Tsukishima Yokohama-shi, Kanagawaken 221-0024 (JP) CHEN, Jitao Shanghai 201203 (CN) HE, Meijia Shanghai 201203 (CN) (74) Representative: Beck Greener LLP  Fulwood House 12 Fulwood Place London WC1V 6HR London WC1V 6HR (GB)