(19)

(11)

EP 0 611 392 A1

(12)

(43) Date of publication: 24.08.1994 Bulletin 1994/34 (21) Application number: 92924209.0 (22) Date of filing: 02.11.1992

(51) International Patent Classification (IPC):  C11D 1/ 66( . ) C11D 1/ 83( . ) C11D 1/ 72( . ) C11D 1/ 02( . ) (86) International application number: PCT/US1992/009386 (87) International publication number: WO 1993/009214 (13.05.1993 Gazette 1993/12)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU NL SE (30) Priority: 08.11.1991 GB 19910023734 (71) Applicant: THE PROCTER & GAMBLE COMPANY Cincinnati, Ohio 45202 (US)	(72) Inventors: HARDY, Frederick, Edward Newcastle Upon Tyne NE20 9ES (GB) BOUTIQUE, Jean-Pol B-5030 Gembloux (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)