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(11)

EP 4 433 566 A1

(12)

(43) Date of publication: 25.09.2024 Bulletin 2024/39 (21) Application number: 22705138.0 (22) Date of filing: 02.02.2022

(51) International Patent Classification (IPC):  C11D 1/14(2006.01) C11D 1/83(2006.01) C11D 3/33(2006.01) C11D 3/32(2006.01) C11D 1/66(2006.01) C11D 3/04(2006.01) C11D 3/36(2006.01) C11D 11/00(2006.01) (52) Cooperative Patent Classification (CPC): C11D 1/662; C11D 1/83; C11D 1/143; C11D 3/33; C11D 3/361; C11D 3/044; C11D 3/32; C11D 2111/16; C11D 2111/20; C11D 2111/14 (86) International application number: PCT/IB2022/050885 (87) International publication number: WO 2023/084316 (19.05.2023 Gazette 2023/20)

(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: 15.11.2021 IT 202100028886 (71) Applicant: Daerg Chimica S.r.l. 43058 Sorbolo Mezzani (PR) (IT)	(72) Inventors: FERRARINI, Christian 41012 Carpi (Modena) (IT) GIORGI, Ercole 43058 Sorbolo Mezzani (Parma) (IT) (74) Representative: Finetti, Claudia  Bugnion S.p.A. Viale Lancetti, 17 20158 Milano 20158 Milano (IT)