(19)
(11) EP 4 093 911 A1

(12)

(43) Date of publication:
30.11.2022 Bulletin 2022/48

(21) Application number: 21701965.2

(22) Date of filing: 22.01.2021
(51) International Patent Classification (IPC): 
D21H 11/18(2006.01)
D21H 17/28(2006.01)
D21H 17/37(2006.01)
D21H 21/20(2006.01)
 D21H 17/25(2006.01)
D21H 17/29(2006.01)
D21H 17/68(2006.01)
D21H 17/00(2006.01)
(52) Cooperative Patent Classification (CPC):
D21H 11/18; D21H 17/375; D21H 17/28; D21H 17/29; D21H 17/25; D21H 17/68; D21H 21/20; D21H 17/74
(86) International application number:
PCT/EP2021/051536
(87) International publication number:
WO 2021/148662 (29.07.2021 Gazette 2021/30)
(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: 22.01.2020 EP 20153258

(71) Applicant: Kemira OYJ
Helsinki 00180 (FI)

(72) Inventors:
  • VIRTANEN, Mikko
    02270 ESPOO (FI)
  • KARISALMI, Kaisa
    02270 ESPOO (FI)
  • LEHTO, Sanna
    02270 ESPOO (FI)
  • HEMMES, Jan-Luiken
    60549 FRANKFURT AM MAIN (DE)

(74) Representative: Santarelli 
49, avenue des Champs-Elysées
75008 Paris
75008 Paris (FR)

   


(54) PRODUCT CONTAINING AN ANIONIC CELLULOSE DERIVATIVE AND ITS USE IN PAPER INDUSTRY