(19)

(11)

EP 0 929 625 A1

(12)

(43) Date of publication: 21.07.1999 Bulletin 1999/29 (21) Application number: 97943396.0 (22) Date of filing: 22.09.1997

(51) International Patent Classification (IPC):  C11D 1/ 62( . ) C11D 3/ 39( . ) C11D 17/ 06( . ) C11D 3/ 37( . ) C11D 17/ 00( . ) (86) International application number: PCT/US1997/016697 (87) International publication number: WO 1998/013451 (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 19960019921 31.10.1996 GB 19960022679 (71) Applicant: THE PROCTER & GAMBLE COMPANY Cincinnati, Ohio 45202 (US)

(72) Inventors: BROOKER, Alan, Thomas Newcastle-upon-Tyne NE3 5NE (GB) MOSS, Michael, Alan, John Northumberland NE43 7DZ (GB) FIGUEROA, Francisco, Ramon Tyne & Wear NE30 3LT (GB) ASKEW, Stuart, Clive Newcastle-upon-Tyne NE2 3DN (GB) SORRIE, Graham, Alexander Northumberland NE61 3SH (GB) HALL, Robin, Gibson Newcastle-upon-Tyne NE1 4XB (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)