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(11)

EP 4 816 436 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24897724.1 (22) Date of filing: 26.11.2024

(51) International Patent Classification (IPC):  C08G 18/38(2006.01) C08G 18/08(2006.01) (52) Cooperative Patent Classification (CPC): C08G 18/242; C08G 18/3855; C08G 18/7642; G02B 1/041   C-Sets: G02B 1/041, C08L 75/04, C08L 81/00; (86) International application number: PCT/JP2024/080207 (87) International publication number: WO 2025/116045 (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: 27.11.2023 US 202318519567 (71) Applicant: Mitsui Chemicals, Inc. Tokyo 104-0028 (JP)	(72) Inventors: NAKANO, Shotaro Omuta-shi, Fukuoka 8368610 (JP) KAWAGUCHI, Masaru Omuta-shi, Fukuoka 8368610 (JP) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)