(19)
(11)
EP 0 462 244 A1
(12)
(43)
Date of publication:
27.12.1991
Bulletin 1991/52
(21)
Application number:
91901500.0
(22)
Date of filing:
08.01.1991
(51)
International Patent Classification (IPC):
C07C
51/
09
( . )
(86)
International application number:
PCT/FI1991/000007
(87)
International publication number:
WO 1991/010637
(
25.07.1991
Gazette 1991/17)
(84)
Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
(30)
Priority:
09.01.1990
FI 19900000107
(71)
Applicant:
KEMIRA OY
SF-02271 Espoo (FI)
(72)
Inventors:
VUORI, Antti, Ilmari
SF-02100 Espoo (FI)
MATTILA, Tapio
SF-02320 Espoo (FI)
(74)
Representative:
Ritter, Stephen David, et al
Mathys & Squire 100 Grays Inn Road
London WC1X 8AL
London WC1X 8AL (GB)
(54)
A PROCESS FOR PREPARING OXALIC ACID