(19)

(11)

EP 0 883 679 A1

(12)

(43) Date of publication: 16.12.1998 Bulletin 1998/51 (21) Application number: 97902354.0 (22) Date of filing: 08.02.1997

(51) International Patent Classification (IPC):  C11D 11/ 02( . ) C11D 11/ 00( . ) C11D 17/ 00( . ) C11D 1/ 02( . ) C11D 11/ 04( . ) C11D 17/ 06( . ) (86) International application number: PCT/EP1997/000591 (87) International publication number: WO 1997/032002 (04.09.1997 Gazette 1997/38)

(84) Designated Contracting States: BE DE ES FR GB IT (30) Priority: 26.02.1996 GB 19960004000 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. 3013 AL Rotterdam (NL)	(72) Inventor: EMERY, William, Derek Wirral, Merseyside L62 6BP (GB) (74) Representative: Mole, Peter Geoffrey  UNILEVER PLC Patent Division Colworth House Sharnbrook Bedford MK44 1LQ Bedford MK44 1LQ (GB)