(19)

(11)

EP 4 267 344 A1

(12)

(43) Date of publication: 01.11.2023 Bulletin 2023/44 (21) Application number: 21834916.5 (22) Date of filing: 16.12.2021

(51) International Patent Classification (IPC):  B24C 11/00(2006.01) C21B 3/06(2006.01) (52) Cooperative Patent Classification (CPC): B24C 11/00; C21B 3/08; C21B 2400/026; C21B 2400/062 (86) International application number: PCT/IB2021/061851 (87) International publication number: WO 2022/144671 (07.07.2022 Gazette 2022/27)

(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: 28.12.2020 US 202063131216 P (71) Applicant: SABIC Global Technologies B.V. 4612 PX Bergen op Zoom (NL)	(72) Inventor: AL-GAHTANI, Masoud Said Jubail, 31961 (SA) (74) Representative: Sabic INDIA Intellectual Property Group  P.O. Box 3008 6160 GA Geleen 6160 GA Geleen (NL)