(19)

(11)

EP 4 798 745 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24791007.8 (22) Date of filing: 22.10.2024

(51) International Patent Classification (IPC):  C22B 1/14(2006.01) C08F 220/56(2006.01) C22B 1/244(2006.01) C04B 18/02(2006.01) C22B 1/243(2006.01) C08L 33/26(2006.01) (52) Cooperative Patent Classification (CPC): C22B 1/14; C22B 1/244; C22B 1/243; C08F 220/56; C08L 33/26   C-Sets: C08L 33/26, C08K 3/36; (86) International application number: PCT/EP2024/079825 (87) International publication number: WO 2025/087899 (01.05.2025 Gazette 2025/18)

(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: GE KH MA MD TN (30) Priority: 27.10.2023 FR 2311755 (71) Applicant: SNF Group 42160 Andrézieux-Bouthéon (FR)	(72) Inventors: ZAKOSEK, Gilles 42160 ANDREZIEUX BOUTHEON (FR) VALERO, Rémi 42160 ANDREZIEUX BOUTHEON (FR) (74) Representative: Ipsilon  Le Contemporain 50 Chemin de la Bruyère 69574 Dardilly Cedex 69574 Dardilly Cedex (FR)