(19)

(11)

EP 4 077 751 A1

(12)

(43) Date of publication: 26.10.2022 Bulletin 2022/43 (21) Application number: 20901538.7 (22) Date of filing: 08.12.2020

(51) International Patent Classification (IPC):  C22B 34/22(2006.01) C22B 3/44(2006.01) C01G 31/00(2006.01) (52) Cooperative Patent Classification (CPC): C22B 7/04; C22B 34/22; C22B 3/44; C22B 3/08; Y02P 10/20 (86) International application number: PCT/AU2020/051337 (87) International publication number: WO 2021/119728 (24.06.2021 Gazette 2021/25)

(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: 19.12.2019 AU 2019904837 (71) Applicant: Avanti Materials Ltd West Perth, Western Australia 6005 (AU)	(72) Inventors: ROBINSON, David Perth, Western Australia 6005 (AU) URBANI, Mark Daniel Wattle Grove, Western Australia 6107 (AU) (74) Representative: HGF  HGF Limited 1 City Walk Leeds LS11 9DX Leeds LS11 9DX (GB)