(19)

(11)

EP 4 247 863 A1

(12)

(43) Date of publication: 27.09.2023 Bulletin 2023/39 (21) Application number: 21895376.8 (22) Date of filing: 10.11.2021

(51) International Patent Classification (IPC):  C08F 10/02(2006.01) C08F 4/6592(2006.01) C08F 210/16(2006.01) (52) Cooperative Patent Classification (CPC): C08F 10/06   C-Sets: C08F 10/06, C08F 2/01; (86) International application number: PCT/US2021/058769 (87) International publication number: WO 2022/108804 (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: 17.11.2020 US 202017099973 14.12.2020 GB 202019701 (71) Applicant: Ineos USA LLC League City, TX 77573 (US)	(72) Inventor: MOHN, Robert Norman Houston, Texas 77059 (US) (74) Representative: King, Alex  Mathisen & Macara LLP Charta House 30-38 Church Street Staines-upon-Thames, Middlesex TW18 4EP Staines-upon-Thames, Middlesex TW18 4EP (GB)