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(11)

EP 4 816 426 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24812155.0 (22) Date of filing: 22.11.2024

(51) International Patent Classification (IPC):  C08F 210/16(2006.01) C08F 4/659(2006.01) C08L 23/08(2025.01) (52) Cooperative Patent Classification (CPC): C08F 210/16; C08F 4/65912; C08F 2420/06; C08L 23/14   C-Sets: C08F 210/16, C08F 210/08, C08F 2500/12, C08F 2500/08, C08F 2500/17, C08F 2500/35, C08F 2500/27, C08F 2500/32, C08F 2500/33, C08F 2500/34, C08F 2500/30; C08F 210/16, C08F 4/65927; C08L 23/14, C08L 23/0815; (86) International application number: PCT/EP2024/083226 (87) International publication number: WO 2025/114148 (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: 28.11.2023 EP 23212668 09.08.2024 EP 24193818 (71) Applicant: Basell Poliolefine Italia S.r.l. 20121 Milano (IT)	(72) Inventors: GRAZZI, Michele 44122 Ferrara (IT) CIARAFONI, Marco 44122 Ferrara (IT) PICA, Roberta 44122 Ferrara (IT) DI CAPUA, Alessia 44122 Ferrara (IT) (74) Representative: LyondellBasell  c/o Basell Polyolefine GmbH Industriepark Hoechst, Bldg. E413 65926 Frankfurt am Main 65926 Frankfurt am Main (DE)