(19)

(11)

EP 0 479 846 A1

(12)

(43) Date of publication: 15.04.1992 Bulletin 1992/16 (21) Application number: 90909723.0 (22) Date of filing: 12.06.1990

(51) International Patent Classification (IPC):  C11D 1/ 825( . ) C11D 17/ 00( . ) C11D 1/ 22( . ) C11D 1/ 52( . ) C11D 1/ 68( . ) C11D 1/ 722( . ) C11D 1/ 83( . ) C11D 17/ 08( . ) C11D 1/ 44( . ) C11D 1/ 66( . ) C11D 1/ 72( . ) C11D 1/ 74( . ) (86) International application number: PCT/EP1990/000971 (87) International publication number: WO 1991/000331 (10.01.1991 Gazette 1991/02)

(84) Designated Contracting States: CH DE ES FR GB IT LI NL SE (30) Priority: 26.06.1989 GB 19890014602 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. NL-3000 DK Rotterdam (NL)	(72) Inventors: SCHEPERS, Frederik, Jan NL-3136 NE Vlaardingen (NL) JURGENS, Albertus NL-3461 GJ Linschoten (NL) VAN DE PAS, Johannes, Cornelis NL-3136 CV Vlaardingen (NL) (74) Representative: Joppe, Hermina L. P., et al  Unilever N.V. Patent Division P.O. Box 137 NL-3130 AC Vlaardingen NL-3130 AC Vlaardingen (NL)