(19)

(11)

EP 0 802 981 A1

(12)

(43) Date of publication: 29.10.1997 Bulletin 1997/44 (21) Application number: 94902775.0 (22) Date of filing: 09.12.1993

(51) International Patent Classification (IPC):  C12N 15/ 09( . ) C12N 1/ 15( . ) C12N 1/ 21( . ) C12N 15/ 55( . ) C12R 1/ 19( . ) C12R 1/ 865( . ) C11D 3/ 386( . ) C12N 1/ 19( . ) C12N 9/ 18( . ) C12N 15/ 62( . ) C12R 1/ 665( . ) (86) International application number: PCT/EP1993/003551 (87) International publication number: WO 1994/014964 (07.07.1994 Gazette 1994/15)

(84) Designated Contracting States: CH DE ES FR GB IT LI NL SE (30) Priority: 23.12.1992 EP 19920204079 (71) Applicants: UNILEVER N.V. 3013 AL Rotterdam (NL) UNILEVER PLC London EC4P 4BQ (GB)

(72) Inventors: EGMOND, Maarten, Robert NL-3511 GW Utrecht (NL) VAN DER HIJDEN, Hendrikus, Theodorus, W., M. NL-2907 KB Capelle a/d IJssel (NL) MUSTERS, Wouter NL-3141 RD Maassluis (NL) PETERS, Hans NL-3051 XV Rotterdam (NL) VERRIPS, Cornelis, Theodorus NL-3142 KB Maassluis (NL) DE VLIEG, Jakob NL-3142 AP Maassluis (NL) (74) Representative: Kan, Jacob Hendrik, Dr., et al  Unilever N.V. Patent Division P.O. Box 137 3130 AC Vlaardingen 3130 AC Vlaardingen (NL)