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EP 4 555 018 A1

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(43) Date of publication: 21.05.2025 Bulletin 2025/21 (21) Application number: 22754524.1 (22) Date of filing: 22.07.2022

(51) International Patent Classification (IPC):  C09C 1/40(2006.01) C09C 3/06(2006.01) C04B 35/628(2006.01) C01F 7/021(2022.01) (52) Cooperative Patent Classification (CPC): C09C 1/407; C09C 3/063; C04B 35/62807; C01F 7/021; C01P 2004/03; C01P 2002/72; C01P 2002/88; C04B 35/111; C04B 35/62892; C04B 35/62894; C04B 2235/5454; C04B 2235/5445 (86) International application number: PCT/IB2022/056804 (87) International publication number: WO 2024/018268 (25.01.2024 Gazette 2024/04)

(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: 19.07.2022 PT 2022118113 (71) Applicant: Universidade de Coimbra 3004-531 Coimbra (PT)

(72) Inventors: ROCHA DURÃES, Luísa Maria 3030-790 Coimbra (PT) DA CRUZ SANTIAGO, Aldina Maria 3030-790 Coimbra (PT) DOS SANTOS CAETANO, Hugo Filipe 3030-790 Coimbra (PT) DE CARVALHO ANDRADE SANTOS, Giulia Clare 3030-790 Coimbra (PT) DOS SANTOS LAÍM, Luís Miguel 3030-790 Coimbra (PT) (74) Representative: Couto, Cláudia  Clarke, Modet Portugal Av. Casal Ribeiro, 50 - 3º Dto. 1000-093 Lisboa 1000-093 Lisboa (PT)