(19)

(11)

EP 0 980 420 A1

(12)

(43) Date of publication: 23.02.2000 Bulletin 2000/08 (21) Application number: 98901987.2 (22) Date of filing: 26.01.1998

(51) International Patent Classification (IPC)7: C11D 7/26, C11D 7/50 (86) International application number: PCT/FI9800/071 (87) International publication number: WO 9832/833 (30.07.1998 Gazette 1998/30)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE (30) Priority: 27.01.1997 FI 970338 (71) Applicant: Koneistamo Kultala oy 92129 Raahe (FI)	(72) Inventor: KULTALA, Matti FIN-92129 Raahe (FI) (74) Representative: Partio, Erja et al Papula Rein Lahtela Oy,P.O. Box 981 00101 Helsinki 00101 Helsinki (FI)