(19)

(11)

EP 4 448 279 A1

(12)

(43) Date of publication: 23.10.2024 Bulletin 2024/43 (21) Application number: 22838704.9 (22) Date of filing: 14.12.2022

(51) International Patent Classification (IPC):  B32B 27/08(2006.01) C08J 5/18(2006.01) B32B 27/36(2006.01) (52) Cooperative Patent Classification (CPC): B32B 27/08; B32B 27/365; B32B 2250/02; B32B 2250/03; B32B 2250/24; B32B 2250/244; B32B 2255/00; B32B 2307/3065; B32B 2307/308; B32B 2307/406; B32B 2307/412; B32B 2307/538; B32B 2307/7163; B32B 2307/732; B32B 2307/75; B32B 2605/08; B32B 2307/714 (86) International application number: PCT/EP2022/085751 (87) International publication number: WO 2023/110961 (22.06.2023 Gazette 2023/25)

(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 (30) Priority: 17.12.2021 EP 21215504 (71) Applicant: Covestro Deutschland AG 51373 Leverkusen (DE)	(72) Inventors: DEIVARAJ, Theivanayagam 40489 Düsseldorf (DE) HERMANNS, Norbert 47798 Krefeld (DE) KUENZEL, Roland 51381 Leverkusen (DE) POPHUSEN, Dirk 51467 Bergisch Gladbach (DE) SCHMEER, Holger 50674 Köln (DE) PUDLEINER, Heinz 47800 Krefeld (DE) HOVESTADT, Wieland 42799 Leichlingen (DE) (74) Representative: Levpat  c/o Covestro AG Gebäude K12 51365 Leverkusen 51365 Leverkusen (DE)