(19)

(11)

EP 0 543 911 A1

(12)

(43) Date of publication: 02.06.1993 Bulletin 1993/22 (21) Application number: 91915442.0 (22) Date of filing: 05.08.1991

(51) International Patent Classification (IPC):  C11D( . ) C11D 3/ 20( . ) C11D 3/ 39( . ) C11D 3/ 12( . ) C11D 3/ 37( . ) (86) International application number: PCT/US1991/005533 (87) International publication number: WO 1992/003525 (05.03.1992 Gazette 1992/06)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 17.08.1990 GB 19900018157 (71) Applicant: THE PROCTER & GAMBLE COMPANY Cincinnati, Ohio 45202 (US)	(72) Inventors: PRETTY, Alastair, John Ponteland Newcastle upon Tyne NE20 9JY (GB) FRASER, Douglas, Gilbert Gorgie Edinburgh (GB) HARDY, Paul, Andrew B-1900 Overijse (BE) (74) Representative: Gibson, Tony Nicholas, et al  Procter & Gamble (NTC) Limited Whitley Road Longbenton Newcastle upon Tyne NE12 9TS Longbenton Newcastle upon Tyne NE12 9TS (GB)