(19)

(11)

EP 0 921 792 A1

(12)

(43) Date of publication: 16.06.1999 Bulletin 1999/24 (21) Application number: 97937758.0 (22) Date of filing: 19.08.1997

(51) International Patent Classification (IPC):  A23K 1/ 16( . ) A61K 31/ 192( . ) A23K 1/ 18( . ) (86) International application number: PCT/IB1997/001068 (87) International publication number: WO 1998/008499 (05.03.1998 Gazette 1998/09)

(84) Designated Contracting States: BE CH DE DK ES FI FR GB IE IT LI NL PT SE Designated Extension States: RO (30) Priority: 27.08.1996 GB 19960018008 (71) Applicant: DSM N.V. 6411 TE Heerlen (NL)	(72) Inventor: VAN OOYEN, Johannes, Adrianus, Cornelis NL-3381 LB Grissenburg (NL)