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(11)

EP 4 816 166 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 23959934.3 (22) Date of filing: 01.12.2023

(51) International Patent Classification (IPC):  B32B 15/082(2006.01) (52) Cooperative Patent Classification (CPC): B32B 15/082; B32B 7/12; B32B 2250/03; B32B 2250/04; B32B 2250/05; B32B 2270/00; B32B 27/308; B32B 27/306; B32B 27/08; B32B 27/304; B32B 2307/7376; B32B 15/18; B32B 27/288; B32B 15/20; B32B 27/32 (86) International application number: PCT/CN2023/135775 (87) International publication number: WO 2025/112024 (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: Dow Global Technologies LLC Midland, MI 48674 (US)	(72) Inventors: LEE, Jong-Young Lake Jackson Texas 77566 (US) JIANG, Xian Lake Jackson Texas 77566 (US) YANG, Yunfeng Shanghai 201203 (CN) REN, Shijie Shanghai 201203 (CN) DONG, Yifan Lake Jackson Texas 77566 (US) (74) Representative: Boult Wade Tennant LLP  Salisbury Square House 8 Salisbury Square London EC4Y 8AP London EC4Y 8AP (GB)