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(11)

EP 4 816 487 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 23959707.3 (22) Date of filing: 28.11.2023

(51) International Patent Classification (IPC):  C09J 175/14(2006.01) (52) Cooperative Patent Classification (CPC): C08G 18/36; C08G 18/7671; C08G 18/7664; C08G 18/4238; C08G 18/69; C08G 18/4829; C08G 18/10; C08G 18/8051; C09D 175/06; C09D 175/04; C09J 175/04; C09J 175/06; C08G 18/246   C-Sets: C08G 18/10, C08G 18/48; C09J 175/04, C08K 3/013; C09J 175/06, C08K 3/013; (86) International application number: PCT/CN2023/134618 (87) International publication number: WO 2025/111782 (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: KH MA MD TN (71) Applicant: Dupont Materials Technology (Shanghai) Co., Ltd. Shanghai 200135 (CN)	(72) Inventor: ZHANG, Zhenghe Shanghai 201203 (CN) (74) Representative: Beck Greener LLP  Fulwood House 12 Fulwood Place London WC1V 6HR London WC1V 6HR (GB)