(19)
(11) EP 2 622 131 A1

(12)

(43) Date of publication:
07.08.2013 Bulletin 2013/32

(21) Application number: 11770475.9

(22) Date of filing: 30.09.2011
(51) International Patent Classification (IPC): 
D21H 17/24(2006.01)
(86) International application number:
PCT/FI2011/050843
(87) International publication number:
WO 2012/042116 (05.04.2012 Gazette 2012/14)
(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

(30) Priority: 01.10.2010 US 388658 P
01.10.2010 FI 20106021

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

(72) Inventors:
  • HIETANIEMI, Matti
    FI-02780 Espoo (FI)
  • SALMINEN, Kristian
    FI-33960 Pirkkala (FI)
  • KATAJA-AHO, Janne
    FI-40900 Säynätsalo (FI)
  • RETULAINEN, Elias
    FI-40740 Jyväskylä (FI)

(74) Representative: Turun Patenttitoimisto Oy 
P.O. Box 99
20521 Turku
20521 Turku (FI)

   


(54) METHOD FOR IMPROVING PAPERMAKING OR BOARD MAKING PROCESS, USE OF A POLYSACCHARIDE AND PAPER