(19)

(11)

EP 0 906 391 A2

(12)

(43) Date of publication: 07.04.1999 Bulletin 1999/14 (21) Application number: 97929172.0 (22) Date of filing: 10.06.1997

(51) International Patent Classification (IPC):  C11D 3/ 06( . ) C11D 3/ 39( . ) (86) International application number: PCT/EP1997/003059 (87) International publication number: WO 1997/048785 (24.12.1997 Gazette 1998/03)

(84) Designated Contracting States: BE DE ES FR GB GR IT (30) Priority: 20.06.1996 BR 19960002854 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. 3013 AL Rotterdam (NL)	(72) Inventors: CROPPER, James, Dawson Merseyside L63 7QZ (GB) LUPPI, Eduardo, Junior CEP-13041-670 S o Paulo (BR) MARQUEZANO DE MEDEIROS, Ana, Claudia CEP-53372-100 S o Paulo (BR) (74) Representative: Dekker, Enno E.J., et al  Unilever N.V. Patents Division P.O. Box 137 3130 AC Vlaardingen 3130 AC Vlaardingen (NL)