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EP 4 248 004 A1

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(43) Date of publication: 27.09.2023 Bulletin 2023/39 (21) Application number: 21802071.7 (22) Date of filing: 05.10.2021

(51) International Patent Classification (IPC):  D01F 6/46(2006.01) D04H 3/16(2006.01) D01F 8/06(2006.01) D04H 3/007(2012.01) (52) Cooperative Patent Classification (CPC): D01F 6/46; D01F 8/06; D04H 3/007; D04H 3/147 (86) International application number: PCT/US2021/053485 (87) International publication number: WO 2022/108673 (27.05.2022 Gazette 2022/21)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 19.11.2020 US 202063116027 P (71) Applicant: ExxonMobil Chemical Patents Inc. Baytown, TX 77520 (US)	(72) Inventors: ROLLIN, Paul, E. Porter, TX 77365 (US) AGENTIS, Abigail, I. Houston, TX 77007 (US) TALLURY, Syamal, S. Houston, TX 77059 (US) DE VITA, Simone 1000 Brussels (BE) BOUDARA, Victor 3000 Leuven (BE) TEJERIZO FUERTES, Alicia 1730 Asse (BE) (74) Representative: ExxonMobil Chemical Europe Inc.  IP Law Europe Hermeslaan 2 1831 Machelen 1831 Machelen (BE)