(19)

(11)

EP 0 702 714 A1

(12)

(43) Date of publication: 27.03.1996 Bulletin 1996/13 (21) Application number: 94917684.0 (22) Date of filing: 01.06.1994

(51) International Patent Classification (IPC):  C11D 3/ 12( . ) C11D 17/ 00( . ) C11D 3/ 37( . ) (86) International application number: PCT/EP1994/001791 (87) International publication number: WO 1994/029427 (22.12.1994 Gazette 1994/28)

(84) Designated Contracting States: CH DE ES FR GB IT LI NL SE (30) Priority: 11.06.1993 EP 19930304581 (71) Applicants: UNILEVER N.V. NL-3013 AL Rotterdam (NL) UNILEVER PLC London EC4P 4BQ (GB)

(72) Inventors: GARRETT, Peter, Robert Pantymwyn Clwyd CH7 5EH (GB) KOWALSKI, Adam, Jan Bebington Wirral L63 3AP (GB) VAN DER HOEVEN, Philippus, Cornelis NL-4841 XV Prinsenbeek (NL) PRESCOTT, Andrew, John Wirral Merseyside L63 3AN (GB) YORKE, John, William, H. South Wirral Cheshire L64 4DL (GB) (74) Representative: Zweep, Robert-Jan  Unilever N.V. Patent Division P.O. Box 137 NL-3130 AC Vlaardingen NL-3130 AC Vlaardingen (NL)