(19)

(11)

EP 1 121 021 A1

(12)

(43) Date of publication: 08.08.2001 Bulletin 2001/32 (21) Application number: 99952589.2 (22) Date of filing: 15.10.1999

(51) International Patent Classification (IPC)7: A23K 1/16, A23K 1/18 (86) International application number: PCT/EP9907/835 (87) International publication number: WO 0021/381 (20.04.2000 Gazette 2000/16)

(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: 15.10.1998 EP 98308456 (71) Applicant: DSM N.V. 6411 TE Heerlen (NL)	(72) Inventors: BEUDEKER, Robert, Franciscus NL-2635 KC Den Hoorn (NL) KIES, Arie, Karst NL-2642 AX Pijnacker (NL) (74) Representative: Wright, Simon Mark  J.A. Kemp & Co.14 South SquareGray's Inn London WC1R 5JJ London WC1R 5JJ (GB)