(19)
(11) EP 4 543 864 A1

(12)

(43) Date of publication:
30.04.2025 Bulletin 2025/18

(21) Application number: 23751353.6

(22) Date of filing: 06.07.2023
(51) International Patent Classification (IPC): 
C07D 311/40(2006.01)
(52) Cooperative Patent Classification (CPC):
C07D 311/40
(86) International application number:
PCT/IB2023/057001
(87) International publication number:
WO 2024/009260 (11.01.2024 Gazette 2024/02)
(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: 07.07.2022 PT 2022118086

(71) Applicant: Universidade de Aveiro
3810-193 Aveiro (PT)

(72) Inventors:
  • EVTYUGIN, Dmitry Victorovitch
    3830-031 ÍLHAVO (PT)
  • PEREIRA MAGINA, Sandra
    3880-560 VÁLEGA (PT)
  • EVTYUGIN, Dmitry Dmitrievitch
    3830-031 ÍLHAVO (PT)
  • FERNANDO DOS SANTOS PRATES, António
    2200-017 ABRANTES (PT)

(74) Representative: Couto, Cláudia 
Clarke, Modet Portugal Av. Casal Ribeiro, 50 - 3º Dto.
1000-093 Lisboa
1000-093 Lisboa (PT)

   


(54) METHOD FOR THE RECOVERY OF ELLAGIC ACID FROM INDUSTRIAL PULP MILL STREAMS