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EP 4 816 492 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24898527.7 (22) Date of filing: 20.11.2024

(51) International Patent Classification (IPC):  C09K 21/14(2006.01) C08L 61/06(2006.01) B27K 3/34(2006.01) C09K 21/06(2006.01) (52) Cooperative Patent Classification (CPC): C09K 21/10; C09K 21/12; B27K 3/15; B27K 2240/30; B27K 3/0292; C08L 61/34; C08L 61/28; C08L 61/24 (86) International application number: PCT/US2024/056726 (87) International publication number: WO 2025/117298 (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 US 202363603861 P (71) Applicant: Hexion Inc. Columbus, OH 43215 (US)

(72) Inventors: FORTIER, Kevin, C. Sammamish, WA 98075 (US) GRISWOLD, James, P. Kalispell, MT 59901 (US) CURRIE, Robert, B. Melbourne, VIC 3023 (AU) FORLONG, Hiu Wing, Terri Tauranga, 3112 (NZ) KUMAR, Vipin Birender, Singh Tauranga, 3112 (NZ) MUNRO, Benjamin, Christopher Te Puke, 3119 (NZ) (74) Representative: Sonnenhauser, Thomas Martin  Wuesthoff & Wuesthoff Patentanwälte und Rechtsanwalt PartG mbB Schweigerstraße 2 81541 München 81541 München (DE)