(19)

(11)

EP 0 670 883 A1

(12)

(43) Date of publication: 13.09.1995 Bulletin 1995/37 (21) Application number: 93921928.0 (22) Date of filing: 09.10.1993

(51) International Patent Classification (IPC):  C11D 1/ 04( . ) C11D 3/ 20( . ) C11D 1/ 12( . ) C11D 3/ 43( . ) (86) International application number: PCT/EP1993/002786 (87) International publication number: WO 1994/009108 (28.04.1994 Gazette 1994/10)

(84) Designated Contracting States: CH DE ES FR GB IT LI NL SE (30) Priority: 16.10.1992 GB 19920021746 03.11.1992 GB 19920022999 25.03.1993 GB 19930006197 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. NL-3013 AL Rotterdam (NL)	(72) Inventors: FRUSI, Andrea, Bruno I-20050 Triuggio (IT) FRY, Alan John South Wirral, Cheshire L65 5DL (GB) JONES, David Philip Penymynydd, Chester CH4 0LB (GB) (74) Representative: Elliott, Peter William, et al  Unilever plc Patent Division Colworth House Sharnbrook Bedford MK44 1LQ Bedford MK44 1LQ (GB)