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EP 4 798 366 A1

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(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24802368.1 (22) Date of filing: 22.10.2024

(51) International Patent Classification (IPC):  B01J 21/06(2006.01) B01J 21/18(2006.01) B01J 23/06(2006.01) B01J 37/04(2006.01) B01J 21/08(2006.01) B01J 23/04(2006.01) B01J 23/26(2006.01) C08F 4/02(2006.01) (52) Cooperative Patent Classification (CPC): B01J 21/08; B01J 21/063; B01J 23/06; B01J 23/26; B01J 23/04; B01J 21/18; B01J 37/04; C08F 110/02   C-Sets: C08F 110/02, C08F 4/025; C08F 110/02, C08F 4/24; C08F 110/02, C08F 2500/12; (86) International application number: PCT/US2024/052311 (87) International publication number: WO 2025/090431 (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: 24.10.2023 US 202318492911 23.07.2024 US 202418780704 (71) Applicant: Chevron Phillips Chemical Company LP The Woodlands, Texas 77387-4910 (US)

(72) Inventors: RAMANATHAN, Anand Bartlesville, Oklahoma 74004 (US) MCDANIEL, Max P. Bartlesville, Oklahoma 74004 (US) BARR, Jared L. Bartlesville, Oklahoma 74004 (US) BLAGG, Andrew T. Bartlesville, Oklahoma 74004 (US) WITTNER, Christopher E. Bartlesville, Oklahoma 74004 (US) SOLENBERGER, Alan L. Bartlesville, Oklahoma 74004 (US) KILPATRICK, Zachary T. Bartlesville, Oklahoma 74004 (US) STEVENS, Micheal P. Bartlesville, Oklahoma 74004 (US) (74) Representative: Potter Clarkson  Chapel Quarter Mount Street Nottingham NG1 6HQ Nottingham NG1 6HQ (GB)