(19)

(11)

EP 0 951 528 A2

(12)

(43) Date of publication: 27.10.1999 Bulletin 1999/43 (21) Application number: 97910080.0 (22) Date of filing: 14.10.1997

(51) International Patent Classification (IPC):  C12N 9/ 48( . ) C11D 3/ 386( . ) (86) International application number: PCT/US1997/018426 (87) International publication number: WO 1998/016604 (23.04.1998 Gazette 1998/16)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE (30) Priority: 15.10.1996 US 19960028496P (71) Applicant: THE PROCTER & GAMBLE COMPANY Cincinnati, Ohio 45202 (US)	(72) Inventor: GREEN, Phillip, Richard Wyoming, OH 45231-5006 (US) (74) Representative: Morelle, Evelyne Charlotte Isabelle, et al  BVBA Procter & Gamble Europe Sprl, Temselaan 100 1853 Strombeek-Bever 1853 Strombeek-Bever (BE)