(19)

(11)

EP 0 670 887 A1

(12)

(43) Date of publication: 13.09.1995 Bulletin 1995/37 (21) Application number: 93924768.0 (22) Date of filing: 15.11.1993

(51) International Patent Classification (IPC):  C11D 1/ 14( . ) C11D 3/ 12( . ) C11D 17/ 06( . ) C11D 1/ 72( . ) C11D 17/ 00( . ) (86) International application number: PCT/GB1993/002345 (87) International publication number: WO 1994/011487 (26.05.1994 Gazette 1994/12)

(84) Designated Contracting States: CH DE ES FR GB IT LI NL SE (30) Priority: 16.11.1992 GB 19920024014 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. NL-3013 AL Rotterdam (NL)	(72) Inventors: CARTER, Malcolm, Nigel, Alan +di NO (GB) HOUGHTON, Mark, Philip NL-2651 VG Berkel en Rodenrijs (NL) HULL, Michael Warrington, Cheshire WA6 9PS (GB) (74) Representative: Fransella, Mary Evelyn, et al  Unilever PLC Patent Division Colworth House Sharnbrook Bedford MK44 1LQ Bedford MK44 1LQ (GB)