(19)

(11)

EP 0 874 887 A1

(12)

(43) Date of publication: 04.11.1998 Bulletin 1998/45 (21) Application number: 96938139.0 (22) Date of filing: 05.11.1996

(51) International Patent Classification (IPC):  C11D 1/ 72( . ) C11D 3/ 48( . ) C11D 3/ 20( . ) (86) International application number: PCT/EP1996/004876 (87) International publication number: WO 1997/021795 (19.06.1997 Gazette 1997/26)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 08.12.1995 GB 19950025155 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. 3013 AL Rotterdam (NL)	(72) Inventor: RABONE, Kenneth Leslie Wirral, Merseyside L63 2QP (GB) (74) Representative: Dekker, Enno E. J.  UNILEVER PLC, Patent Division, Colworth House Sharnbrook, Bedford MK44 1LQ Sharnbrook, Bedford MK44 1LQ (GB)