(19)

(11)

EP 0 971 964 A1

(12)

(43) Date of publication: 19.01.2000 Bulletin 2000/03 (21) Application number: 98920494.6 (22) Date of filing: 01.04.1998

(51) International Patent Classification (IPC)7: C08F 283/01, C08J 7/04 // (C08F283/01, 220:20) (86) International application number: PCT/EP9801/883 (87) International publication number: WO 9845/343 (15.10.1998 Gazette 1998/41)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI NL PT SE (30) Priority: 04.04.1997 IT TO970286 (71) Applicant: C.O.I.M. S.p.A.- Chimica Organica Industriale Milanese 20019 Settimo Milanese (IT)	(72) Inventors: LIGUTTI, Marzio I-26100 Cremona (IT) MONTECCHI, MassimoBâtiment E, escalier C-3 ter F-92100 Boulogne Billancourt (FR) (74) Representative: Rambelli, Paolo  c/o JACOBACCI & PERANI S.p.A.Corso Regio Parco, 27 10152 Torino 10152 Torino (IT)