(19)

(11)

EP 0 987 953 A2

(12)

(88) Date of publication A3: 25.02.1999 (43) Date of publication: 29.03.2000 Bulletin 2000/13 (21) Application number: 98933578.1 (22) Date of filing: 25.05.1998

(51) International Patent Classification (IPC)7: A23B 7/00 (86) International application number: PCT/EP9803/227 (87) International publication number: WO 9852/423 (26.11.1998 Gazette 1998/47)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 23.05.1997 EP 97201556 (71) Applicant: DSM N.V. 6411 TE Heerlen (NL)	(72) Inventors: COUTEL, Yves, André, Gérard F-59710 Ennevelin (FR) DALE, Rodney, Hugh, Sharpe Bovey Tracey,Devon TQ13 9DW (GB) (74) Representative: Visser-Luirink, Gesina, Dr. et al DSM Patents & TrademarksOffice DelftP.O. Box 1 2600 MA Delft 2600 MA Delft (NL)