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EP 4 739 721 A1

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(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24743690.0 (22) Date of filing: 03.07.2024

(51) International Patent Classification (IPC):  C08G 18/08(2006.01) C08G 18/28(2006.01) C08G 18/40(2006.01) C08G 18/48(2006.01) C08G 18/72(2006.01) C08G 18/75(2006.01) C09D 175/06(2006.01) D06N 3/14(2006.01) C08G 18/12(2006.01) C08G 18/32(2006.01) C08G 18/44(2006.01) C08G 18/66(2006.01) C08G 18/73(2006.01) C09D 175/04(2006.01) C09D 175/08(2006.01) (52) Cooperative Patent Classification (CPC): D06N 3/14; C08G 18/283; C08G 18/755; C08G 18/73; C08G 18/722; C08G 18/6677; C08G 18/6644; C08G 18/6611; C08G 18/44; C08G 18/4018; C08G 18/4825; C09D 175/04; C09D 175/06; C09D 175/08; C08G 18/12; C08G 18/0823; C08G 18/0828; C08G 18/3206   C-Sets: C08G 18/12, C08G 18/3234; C08G 18/12, C08G 18/3857; C08G 18/12, C08G 18/3271; C08G 18/12, C08G 18/3821; (86) International application number: PCT/CN2024/103241 (87) International publication number: WO 2025/007874 (09.01.2025 Gazette 2025/02)

(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: 04.07.2023 WO PCT/CN2023/105668 (71) Applicant: Covestro Deutschland AG 51373 Leverkusen (DE)	(72) Inventors: CHU, Yun Shanghai 201206 (CN) YU, Mingming Shanghai 201206 (CN) TANG, Shifeng Xuancheng, Anhui 245332 (CN) JIANG, Changjing Shanghai 201313 (CN) LI, Yuan Shanghai 201209 (CN) YIN, Fei Shanghai 201399 (CN) FAN, Zhirong 40764 (DE) ZHU, Yingdan Shanghai 201210 (CN) (74) Representative: Levpat  c/o Covestro AG Gebäude K12 51365 Leverkusen 51365 Leverkusen (DE)