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(11)

EP 0 652 939 A1

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(43) Date of publication: 17.05.1995 Bulletin 1995/20 (21) Application number: 93917603.0 (22) Date of filing: 20.07.1993

(51) International Patent Classification (IPC):  C12N 15/ 09( . ) C12N 9/ 18( . ) C12R 1/ 77( . ) C11D 3/ 386( . ) C12N 9/ 20( . ) (86) International application number: PCT/EP1993/001923 (87) International publication number: WO 1994/003578 (17.02.1994 Gazette 1994/05)

(84) Designated Contracting States: CH DE ES FR GB IT LI NL SE (30) Priority: 31.07.1992 GB 19920016387 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. NL-3013 AL Rotterdam (NL)

(72) Inventors: VAN DER HIJDEN, Hendrikus, Theodorus, W., M. NL-2907 KB Capelle a/d IJssel (NL) MARUGG, John, David NL-3524 BL Utrecht (NL) WARR, Jonathan Frank Port Sunlight, Wirral L62 4UL (GB) KLUGKIST, Jan Spital L63 9FN (GB) MUSTERS, Wouter NL-3141 RD Maassluis (NL) HONDMANN, Dirk, Herman, A. NL-2712 EK Zoetermeer (NL) (74) Representative: Kan, Jacob Hendrik, Dr., et al  Unilever N.V. Patent Division P.O. Box 137 NL-3130 AC Vlaardingen NL-3130 AC Vlaardingen (NL)