(19)

(11)

EP 1 196 521 A1

(12)

(43) Date of publication: 17.04.2002 Bulletin 2002/16 (21) Application number: 00943815.1 (22) Date of filing: 15.06.2000

(51) International Patent Classification (IPC)7: C11D 3/20, C11D 3/24, C11D 3/28, C11D 3/36 (86) International application number: PCT/EP0005/530 (87) International publication number: WO 0107/549 (01.02.2001 Gazette 2001/05)

(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: 23.07.1999 GB 9917451 (71) Applicants: Unilever Plc London,Greater London EC4P 4BQ (GB) GB IE CY  UNILEVER N.V. 3013 AL Rotterdam (NL) BE CH DE DK ES FI FR GR IT LI LU MC NL PT SE AT	(72) Inventors: BATCHELOR, Stephen, Norman Wirral,Merseyside CH63 3JW (GB) COLEMAN, Colette, Elizabeth Wirral,Merseyside CH63 3JW (GB) CRAWFORD, Robert, John Wirral,Merseyside CH63 3JW (GB) FAIRCLOUGH, Lynnette Wirral,Merseyside CH63 3JW (GB) (74) Representative: Elliott, Peter William et al Unilever plcPatent Department,Colworth HouseSharnbrook Bedford MK44 1LQ Bedford MK44 1LQ (GB)