(19)
(11) EP 0 882 152 A1

(12)

(43) Date of publication:
09.12.1998 Bulletin 1998/50

(21) Application number: 97903409.0

(22) Date of filing: 19.02.1997
(51) International Patent Classification (IPC): 
D21C 9/ 10( . )
 D21C 9/ 16( . )
(86) International application number:
PCT/FI1997/000107
(87) International publication number:
WO 1997/030209 (21.08.1997 Gazette 1997/36)
(84) Designated Contracting States:
DE FR GB NL SE

(30) Priority: 19.02.1996 FI 19960000757

(71) Applicant: KEMIRA CHEMICALS OY
00101 Helsinki (FI)

(72) Inventors:
  • RENVALL, Ilkka
    FIN-02300 Espoo (FI)
  • ASKELA, Reijo
    FIN-02360 Espoo (FI)
  • PAREN, Aarto
    FIN-37630 Valkeakoski (FI)

(74) Representative: Saijonmaa, Olli-Pekka 
Berggren Oy Ab, P.O. Box 16
00101 Helsinki
00101 Helsinki (FI)

   


(54) PROCESS FOR BLEACHING OF A HIGH YIELD PULP