(19)

(11)

EP 1 159 391 A1

(12)

(43) Date of publication: 05.12.2001 Bulletin 2001/49 (21) Application number: 00903674.0 (22) Date of filing: 09.02.2000

(51) International Patent Classification (IPC)7: C11D 17/00 (86) International application number: PCT/EP0001/008 (87) International publication number: WO 0053/715 (14.09.2000 Gazette 2000/37)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 10.03.1999 EP 99301819 (71) Applicant: UNILEVER PLC London EC4P 4BQ (GB)	(72) Inventors: EUSER, Huug,Lever Develop. Centre 3133 AT Vlaardingen (NL) COSTELLO, Nora Ann 75858 Paris Cedex 17 (FR) (74) Representative: Tansley, Sally Elizabeth  Unilever PLC,Patent Division,Colworth House Sharnbrook,Bedford MK44 1LQ Sharnbrook,Bedford MK44 1LQ (GB)