(19)

(11)

EP 0 808 100 A1

(12)

(43) Date of publication: 26.11.1997 Bulletin 1997/48 (21) Application number: 96901370.0 (22) Date of filing: 05.02.1996

(51) International Patent Classification (IPC):  A01N 37/ 10( . ) A23K 3/ 00( . ) A23L 3/ 3517( . ) A01N 37/ 40( . ) A23K 3/ 03( . ) (86) International application number: PCT/FI1996/000065 (87) International publication number: WO 1996/024247 (15.08.1996 Gazette 1996/37)

(84) Designated Contracting States: DE DK ES FR GB IE PT SE (30) Priority: 06.02.1995 FI 19950000512 (71) Applicant: KEMIRA CHEMICALS OY 00180 Helsinki (FI)

(72) Inventors: AHLNÄS, Thomas FIN-00270 Helsinki (FI) LUHTALA, Jarmo FIN-00350 Helsinki (FI) LÖFGREN, Timo FIN-02360 Espoo (FI) RAURAMAA, Aino FIN-02200 Espoo (FI) NOUSIAINEN, Juha FIN-02770 Espoo (FI) TOMMILA, Arvi FIN-02710 Espoo (FI) MÜLLER, Arthur S-253 61 Helsingborg (SE) MALMQVIST, Sven-Olof S-263 92 Jonstorp (SE) (74) Representative: Träskman, Berndt Hilding  Berggren Oy Ab, P.O. Box 16 00101 Helsinki 00101 Helsinki (FI)