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EP 4 457 324 A1

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(43) Date of publication: 06.11.2024 Bulletin 2024/45 (21) Application number: 22844579.7 (22) Date of filing: 22.12.2022

(51) International Patent Classification (IPC):  C11B 13/00(2006.01) C11C 1/04(2006.01) C10M 105/32(2006.01) C11B 13/02(2006.01) C11C 3/00(2006.01) (52) Cooperative Patent Classification (CPC): C11C 1/04; C11C 3/003; C11B 13/02; C11B 13/00; C10M 105/32; C10M 175/00; C10M 2207/401; C10M 2207/2815; C10N 2030/64 (86) International application number: PCT/IB2022/062656 (87) International publication number: WO 2023/126789 (06.07.2023 Gazette 2023/27)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 30.12.2021 IT 202100033152 (71) Applicants: Isuschem s.r.l. 80134 Napoli (NA) (IT) Itelyum Regeneration S.p.A. 26854 Pieve Fissiraga (LO) (IT)	(72) Inventors: DI SERIO, Martino 80134 Naples (NA) (IT) GALLO, Francesco 26854 Pieve Fissiraga (LO) (IT) (74) Representative: Vatti, Francesco Paolo et al Fumero S.r.l Pettenkofferstrasse 20/22 80336 Munich 80336 Munich (DE)