(19)

(11)

EP 0 889 946 A1

(12)

(43) Date of publication: 13.01.1999 Bulletin 1999/02 (21) Application number: 97916216.0 (22) Date of filing: 25.03.1997

(51) International Patent Classification (IPC):  C11D 3/ 33( . ) (86) International application number: PCT/US1997/004831 (87) International publication number: WO 1997/036983 (09.10.1997 Gazette 1997/43)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE (30) Priority: 29.03.1996 GB 19960006715 (71) Applicant: THE PROCTER & GAMBLE COMPANY Cincinnati, Ohio 45202 (US)	(72) Inventors: CRUICKSHANK, Graeme, Duncan Newcastle upon Tyne NE12 0QD (GB) SMITH, Peter, Andrew Surrey GU25 4AG (GB) (74) Representative: Engisch, Gautier, et al  Procter & Gamble European Technical Center N.V. Temselaan 100 1853 Strombeek-Bever 1853 Strombeek-Bever (BE)