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EP 3 924 397 A1

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(43) Date of publication: 22.12.2021 Bulletin 2021/51 (21) Application number: 20755183.9 (22) Date of filing: 11.02.2020

(51) International Patent Classification (IPC):  C08F 210/06(2006.01) C08F 4/02(2006.01) C08F 4/659(2006.01) C08F 210/02(2006.01) C08F 4/64(2006.01) (52) Cooperative Patent Classification (CPC): C08F 4/659; C08F 210/06; C08F 4/02; C08F 210/02; C08F 4/64 (86) International application number: PCT/US2020/017757 (87) International publication number: WO 2020/167838 (20.08.2020 Gazette 2020/34)

(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: 12.02.2019 US 201962804389 P 12.06.2019 EP 19179810 (71) Applicant: ExxonMobil Chemical Patents Inc. Baytown, TX 77520 (US)

(72) Inventors: GORYUNOV, Georgy P. Kokoshkino, 143390 (RU) POPOV, Vladislav A. Moscow, 119991 (RU) UBORSKY, Dmitry V Moscow, 107392 (RU) VOSKOBOYNIKOV, Alexander Z. Moscow, 129515 (RU) HAGADORN, John R. Houston, TX 77035 (US) CAI, Irene C. Webster, TX 77598 (US) CANICH, Jo Ann M. Houston, TX 77059 (US) (74) Representative: ExxonMobil Chemical Europe Inc.  IP Law Europe Hermeslaan 2 1831 Machelen 1831 Machelen (BE)