(19)

(11)

EP 0 929 643 A1

(12)

(43) Date of publication: 21.07.1999 Bulletin 1999/29 (21) Application number: 97943527.0 (22) Date of filing: 22.09.1997

(51) International Patent Classification (IPC):  C11D 3/ 00( . ) C11D 3/ 386( . ) C11D 3/ 37( . ) C11D 17/ 06( . ) (86) International application number: PCT/US1997/017076 (87) International publication number: WO 1998/013464 (02.04.1998 Gazette 1998/13)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE (30) Priority: 24.09.1996 GB 19960019929 (71) Applicant: THE PROCTER & GAMBLE COMPANY Cincinnati, Ohio 45202 (US)

(72) Inventors: ASKEW, Stuart, Clive Newcastle upon Tyne NE2 3DN (GB) SORRIE, Graham, Alexander Morpeth Northumberland NE61 3SH (GB) HALL, Robin, Gibson Newcastle upon Tyne NE1 4XB (GB) MAIN, Alison, Lesley Tyne & Wear NE25 8RG (GB) GRAYDON, Andrew, Russell Tyne & Wear NE8 1TP (GB) (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)