(19)

(11)

EP 0 946 696 A1

(12)

(43) Date of publication: 06.10.1999 Bulletin 1999/40 (21) Application number: 97953864.0 (22) Date of filing: 11.12.1997

(51) International Patent Classification (IPC):  C11D 1/ 825( . ) C11D 3/ 00( . ) C11D 1/ 44( . ) C11D 1/ 66( . ) C11D 1/ 722( . ) C11D 1/ 835( . ) C11D 1/ 42( . ) C11D 1/ 52( . ) C11D 1/ 72( . ) (86) International application number: PCT/EP1997/007145 (87) International publication number: WO 1998/028390 (02.07.1998 Gazette 1998/26)

(84) Designated Contracting States: BE DE ES FR GB IT (30) Priority: 20.12.1996 EP 19960309419 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. 3013 AL Rotterdam (NL)	(72) Inventors: HARIRCHIAN, Bijan Warren, NJ 07059 (US) KHAN-LODHI, Abid, Nadim North Bergen, NJ 07047 (US) SAMS, Philip John South Wirral, Cheshire L64 1TB (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)