(19)

(11)

EP 0 769 043 A1

(12)

(43) Date of publication: 23.04.1997 Bulletin 1997/17 (21) Application number: 95925789.0 (22) Date of filing: 29.06.1995

(51) International Patent Classification (IPC):  C11D 1/ 72( . ) C11D 3/ 20( . ) C11D 17/ 00( . ) C11D 3/ 18( . ) C11D 3/ 43( . ) (86) International application number: PCT/EP1995/002533 (87) International publication number: WO 1996/001305 (18.01.1996 Gazette 1996/04)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 06.07.1994 GB 19940013612 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. 3013 AL Rotterdam (NL)	(72) Inventors: FARNWORTH, Donald, Michael Wirral-Merseyside L49 3AL (GB) MARTIN, Alexander Warrington-Cheshire WA6 0HJ (GB) (74) Representative: Elliott, Peter William, et al  Unilever plc Patent Division Colworth House Sharnbrook Bedford MK44 1LQ Bedford MK44 1LQ (GB)