(19)

(11)

EP 3 844 329 A1

(12)

(43) Date of publication: 07.07.2021 Bulletin 2021/27 (21) Application number: 19759265.2 (22) Date of filing: 14.08.2019

(51) International Patent Classification (IPC):  D01D 5/34(2006.01) D01F 6/30(2006.01) D04H 1/54(2012.01) D01F 8/06(2006.01) (86) International application number: PCT/US2019/046448 (87) International publication number: WO 2020/046581 (05.03.2020 Gazette 2020/10)

(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: 30.08.2018 US 201862724994 P 06.11.2018 EP 18204558 (71) Applicant: ExxonMobil Chemical Patents Inc. Baytown, TX 77520-2101 (US)	(72) Inventors: ZHAO, Bin Songjing, 200620 (CN) AGENTIS, Abigail, I. Houston, TX 77007 (US) (74) Representative: ExxonMobil Chemical Europe Inc.  IP Law Europe Hermeslaan 2 1831 Machelen 1831 Machelen (BE)