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EP 4 816 451 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24827410.2 (22) Date of filing: 25.11.2024

(51) International Patent Classification (IPC):  C08G 77/445(2006.01) C08G 77/46(2006.01) C08G 64/18(2006.01) C08G 77/448(2006.01) C08G 63/695(2006.01) C08J 3/03(2006.01) (52) Cooperative Patent Classification (CPC): C08G 77/445; C08G 77/448; C08G 77/46; C08G 63/695; C08G 64/186; C08J 3/03; C08J 2383/04; C08J 2383/10; C08J 2400/108 (86) International application number: PCT/US2024/057240 (87) International publication number: WO 2025/117417 (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: 28.11.2023 US 202363603390 P (71) Applicant: Momentive Performance Materials Inc. Niskayuna, NY 12309 (US)	(72) Inventors: APPUKUTTAN, Vinu Krishnan Bangalore 560100 (IN) MAITY, Debdeep Purba Medinipur 721636 (IN) TIWARY, Yogesh Mahadevpura 560048 (IN) (74) Representative: Gille Hrabal Partnerschaftsgesellschaft mbB Patentanwälte  Brucknerstraße 20 40593 Düsseldorf 40593 Düsseldorf (DE)