(19)
(11) EP 0 946 819 A1

(12)

(43) Date of publication:
06.10.1999 Bulletin 1999/40

(21) Application number: 97913227.0

(22) Date of filing: 26.11.1997
(51) International Patent Classification (IPC): 
D21C 9/ 153( . )
D21C 9/ 16( . )
(86) International application number:
PCT/FI1997/000730
(87) International publication number:
WO 1998/023811 (04.06.1998 Gazette 1998/22)
(84) Designated Contracting States:
AT CH DE FR LI PT SE

(30) Priority: 26.11.1996 FI 19960004715

(71) Applicant: OY KESKUSLABORATORIO - CENTRALLABORATORIUM AB
02151 Espoo (FI)

(72) Inventor:
  • FUHRMANN, Agneta
    FIN-02570 Sjundea (FI)

(74) Representative: Sundman, Christoffer, et al 
Seppo Laine Oy, Itämerenkatu 3 B
00180 Helsinki
00180 Helsinki (FI)

   


(54) BLEACHING OF CELLULOSIC PULP WITH OZONE AND PERACID