(19)

(11)

EP 0 811 049 A1

(12)

(43) Date of publication: 10.12.1997 Bulletin 1997/50 (21) Application number: 96904036.0 (22) Date of filing: 07.02.1996

(51) International Patent Classification (IPC):  C11D 1/ 62( . ) C11D 1/ 86( . ) C11D 1/ 72( . ) C11D 1/ 835( . ) C11D 1/ 66( . ) (86) International application number: PCT/EP1996/000542 (87) International publication number: WO 1996/026257 (29.08.1996 Gazette 1996/39)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 23.02.1995 GB 19950003594 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. 3013 AL Rotterdam (NL)	(72) Inventor: LEACH, Matthew, James Wirral, Merseyside L63 2PX (GB) (74) Representative: Elliott, Peter William  Unilever plc Patent Division Colworth House Sharnbrook Bedford MK44 1LQ Bedford MK44 1LQ (GB)