(19)
(11) EP 4 355 452 A2

(12)

(88) Date of publication A3:
20.10.2022

(43) Date of publication:
24.04.2024 Bulletin 2024/17

(21) Application number: 22735109.5

(22) Date of filing: 15.06.2022
(51) International Patent Classification (IPC): 
B01D 11/04(2006.01)
(52) Cooperative Patent Classification (CPC):
B01D 11/0492; B01D 11/0488
(86) International application number:
PCT/EP2022/066278
(87) International publication number:
WO 2022/175564 (25.08.2022 Gazette 2022/34)
(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: 18.06.2021 EP 21180315

(71) Applicant: LENZING AKTIENGESELLSCHAFT
4860 Lenzing (AT)

(72) Inventors:
  • ALMHOFER, Lukas
    4650 Edt bei Lambach (AT)
  • BISCHOF, Robert
    1080 Wien (AT)
  • MADERA, Martin
    1030 Wien (AT)
  • SCHLACKL, Klaus
    4730 Waizenkirchen (AT)

   


(54) METHOD FOR PURIFYING AN EXTRACTION LIQUID