(19)

(11)

EP 0 944 703 A1

(12)

(43) Date of publication: 29.09.1999 Bulletin 1999/39 (21) Application number: 97952016.0 (22) Date of filing: 21.11.1997

(51) International Patent Classification (IPC):  C11D 1/ 94( . ) C11D 1/ 14( . ) C11D 1/ 66( . ) C11D 1/ 90( . ) C11D 3/ 37( . ) C11D 1/ 29( . ) C11D 1/ 75( . ) (86) International application number: PCT/EP1997/006674 (87) International publication number: WO 1998/026036 (18.06.1998 Gazette 1998/24)

(84) Designated Contracting States: BE DE ES FR GB IT (30) Priority: 12.12.1996 GB 19960025884 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. 3013 AL Rotterdam (NL)	(72) Inventors: RENNIE, George, Kerr Merseyside L63 9JF (GB) YORKE, John, William, Harold Cheshire L64 4DL (GB) (74) Representative: Tansley, Sally Elizabeth, et al  Unilever PLC, Patent Division, Colworth House Sharnbrook, Bedford MK44 1LQ Sharnbrook, Bedford MK44 1LQ (GB)