(19)

(11)

EP 1 165 733 A1

(12)

(43) Date of publication: 02.01.2002 Bulletin 2002/01 (21) Application number: 00919866.4 (22) Date of filing: 29.03.2000

(51) International Patent Classification (IPC)7: C11D 3/12, C11D 3/10, C11D 3/37 (86) International application number: PCT/US0008/417 (87) International publication number: WO 0060/040 (12.10.2000 Gazette 2000/41)

(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: 01.04.1999 GB 9907568 (71) Applicant: The Procter & Gamble Company Cincinnati, Ohio 45202 (US)	(72) Inventor: HALL, Robin, Gibson Newcastle upon Tyne NE1 4XB (GB) (74) Representative: Peet, Jillian Wendy  Procter & Gamble Technical Centres Limited, Whitley Road, Longbenton Newcastle upon Tyne NE12 9TS Newcastle upon Tyne NE12 9TS (GB)