(19)

(11)

EP 4 798 642 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24793848.3 (22) Date of filing: 24.10.2024

(51) International Patent Classification (IPC):  C08G 18/08(2006.01) C08G 18/32(2006.01) C08G 18/42(2006.01) C08G 18/66(2006.01) C08G 18/75(2006.01) C08G 18/12(2006.01) C08G 18/38(2006.01) C08G 18/44(2006.01) C08G 18/72(2006.01) C08L 75/04(2006.01) (52) Cooperative Patent Classification (CPC): C08G 18/12; C08L 75/04; C08G 18/0823; C08G 18/0828; C08G 18/3206; C08G 18/3228; C08G 18/3271; C08G 18/3821; C08G 18/4277; C08G 18/44; C08G 18/6637; C08G 18/722; C08G 18/755; C08G 18/758   C-Sets: C08G 18/12, C08G 18/3228; C08G 18/12, C08G 18/3221; C08L 75/04, C08L 33/26; (86) International application number: PCT/EP2024/080103 (87) International publication number: WO 2025/088050 (01.05.2025 Gazette 2025/18)

(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: 27.10.2023 WO PCT/CN2023/127081 20.11.2023 EP 23208211 22.05.2024 EP 24177215 (71) Applicant: Covestro Deutschland AG 51373 Leverkusen (DE)	(72) Inventors: XUE, Xin Shanghai, 201206 (CN) ZHU, Ying Dan Shanghai, 201210 (CN) WANG, Bin Shanghai, 201299 (CN) LI, Yuan Shanghai, 201209 (CN) JIANG, Changjing Shanghai, 201313 (CN) WEIKARD, Jan 51375 Leverkusen (DE) NAZARAN, Pantea 51375 Leverkusen (DE) POCHOROVSKI, Igor 40789 Monheim am Rhein (DE) (74) Representative: Levpat  c/o Covestro AG Gebäude K12 51365 Leverkusen 51365 Leverkusen (DE)