(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