(19)

(11)

EP 1 021 501 A1

(12)

(43) Date of publication: 26.07.2000 Bulletin 2000/30 (21) Application number: 97908765.7 (22) Date of filing: 26.02.1997

(51) International Patent Classification (IPC)7: C11D 1/46, C11D 1/48, C11D 1/52 (86) International application number: PCT/US9703/111 (87) International publication number: WO 9732/955 (12.09.1997 Gazette 1997/39)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE (30) Priority: 05.03.1996 GB 9604628 (71) Applicant: THE PROCTER & GAMBLE COMPANY Cincinnati,Ohio 45202 (US)	(72) Inventors: BAILLELY, Gerard, Marcel Gosforth,Newcastle upon Tyne NE3 5LS (GB) PERKINS, Christopher, Mark Cincinnati, OH 45233 (US) (74) Representative: Peet, Jillian Wendy et al Procter & Gamble Technical Centres Limited,Whitley Road,Longbenton Newcastle upon Tyne NE12 9TS Newcastle upon Tyne NE12 9TS (GB)