(19)

(11)

EP 1 056 827 A1

(12)

(43) Date of publication: 06.12.2000 Bulletin 2000/49 (21) Application number: 99904576.8 (22) Date of filing: 03.02.1999

(51) International Patent Classification (IPC)7: C11D 3/39, C11D 3/37, C11D 1/02 (86) International application number: PCT/US9902/394 (87) International publication number: WO 9942/551 (26.08.1999 Gazette 1999/34)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU NL PT SE (30) Priority: 20.02.1998 US 75383 P (71) Applicant: The Procter & Gamble Company Cincinnati,Ohio 45202 (US)	(72) Inventor: CHAPMAN, Benjamin, Edgar Cincinnati, OH 45231 (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)