(19)
(11) EP 4 263 936 A1

(12)

(43) Date of publication:
25.10.2023 Bulletin 2023/43

(21) Application number: 21827607.9

(22) Date of filing: 15.12.2021
(51) International Patent Classification (IPC): 
D21C 9/08(2006.01)
(52) Cooperative Patent Classification (CPC):
D21C 9/086
(86) International application number:
PCT/FI2021/050876
(87) International publication number:
WO 2022/129696 (23.06.2022 Gazette 2022/25)
(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: 17.12.2020 FI 20206327

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

(72) Inventors:
  • HILTUNEN, Jaakko
    02270 Espoo (FI)
  • LINDBERG, Lenita
    02270 Espoo (FI)
  • ASIKANIUS, Brita
    02270 Espoo (FI)

(74) Representative: Berggren Oy 
P.O. Box 16 Eteläinen Rautatiekatu 10A
00101 Helsinki
00101 Helsinki (FI)

   


(54) USE OF AN ANIONIC LIGNIN-CARBOHYDRATE COMPLEX AS A DISPERSING AGENT AND METHOD FOR PULP MANUFACTURING