(19)

(11)

EP 0 906 406 A1

(12)

(43) Date of publication: 07.04.1999 Bulletin 1999/14 (21) Application number: 97915969.0 (22) Date of filing: 05.03.1997

(51) International Patent Classification (IPC):  C11D 3/ 386( . ) C11D 3/ 39( . ) (86) International application number: PCT/US1997/004053 (87) International publication number: WO 1997/034985 (25.09.1997 Gazette 1997/41)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE (30) Priority: 16.03.1996 GB 19960005570 (71) Applicant: THE PROCTER & GAMBLE COMPANY Cincinnati, Ohio 45202 (US)

(72) Inventors: BAILLELY, Gerard, Marcel Gosforth Newcastle upon Tyne NE3 5LS (GB) MOSS, Michael, Alan, John Stocksfield Northumberland NE43 7DZ (GB) THOEN, Christopher, Arthur, Jacques, Kamiel North Shields Tyne and Wear NE30 3LT (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)