(19)

(11)

EP 0 862 609 A1

(12)

(43) Date of publication: 09.09.1998 Bulletin 1998/37 (21) Application number: 96932507.0 (22) Date of filing: 11.09.1996

(51) International Patent Classification (IPC):  C11D 1/ 835( . ) C11D 1/ 52( . ) C11D 1/ 66( . ) C11D 1/ 75( . ) C11D 1/ 79( . ) C11D 1/ 90( . ) C11D 1/ 94( . ) C11D 1/ 62( . ) C11D 1/ 72( . ) C11D 1/ 755( . ) C11D 1/ 88( . ) C11D 1/ 92( . ) (86) International application number: PCT/EP1996/004002 (87) International publication number: WO 1997/012952 (10.04.1997 Gazette 1997/16)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 04.10.1995 GB 19950020519 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. 3013 AL Rotterdam (NL)	(72) Inventors: KHAN-LODHI, Abid, Nadim Hoole Chester Cheshire CH2 3HJ (GB) WHALEY, Christopher Wirral Merseyside L63 5NS (GB) (74) Representative: Mole, Peter Geoffrey  UNILEVER PLC Patent Division Colworth House Sharnbrook Bedford MK44 1LQ Bedford MK44 1LQ (GB)