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(11)

EP 4 351 873 A1

(12)

(43) Date of publication: 17.04.2024 Bulletin 2024/16 (21) Application number: 22732123.9 (22) Date of filing: 03.06.2022

(51) International Patent Classification (IPC):  B32B 7/06(2019.01) B32B 27/08(2006.01) B32B 27/32(2006.01) B32B 27/36(2006.01) B32B 7/12(2006.01) B32B 27/18(2006.01) B32B 27/34(2006.01) (52) Cooperative Patent Classification (CPC): B32B 7/06; B32B 7/12; B32B 27/08; B32B 27/18; B32B 27/325; B32B 27/34; B32B 27/365; B32B 27/32; B32B 2250/24; B32B 2250/40; B32B 2307/406; B32B 2307/412; B32B 2307/42; B32B 2307/54; B32B 2307/538; B32B 2307/51; B32B 2307/732; B32B 2307/73; B32B 2307/72; B32B 2605/003; B32B 2457/20 (86) International application number: PCT/EP2022/065157 (87) International publication number: WO 2022/258506 (15.12.2022 Gazette 2022/50)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 07.06.2021 EP 21178017 (71) Applicant: Covestro Deutschland AG 51373 Leverkusen (DE)	(72) Inventors: PUDLEINER, Heinz 47800 Krefeld (DE) DEIVARAJ, Theivanayagam 40489 Düsseldorf (DE) ROEHNER, Jürgen 51069 Köln (DE) JANKE, Stefan 41379 Brüggen (DE) HERMANNS, Norbert 47798 Krefeld (DE) (74) Representative: Levpat  c/o Covestro AG Gebäude K12 51365 Leverkusen 51365 Leverkusen (DE)