(19)

(11)

EP 0 883 670 A1

(12)

(43) Date of publication: 16.12.1998 Bulletin 1998/51 (21) Application number: 97905022.0 (22) Date of filing: 13.02.1997

(51) International Patent Classification (IPC):  C11D 3/ 28( . ) C11D 3/ 39( . ) C11D 3/ 37( . ) C11D 17/ 00( . ) (86) International application number: PCT/EP1997/000687 (87) International publication number: WO 1997/031996 (04.09.1997 Gazette 1997/38)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 29.02.1996 US 19960608833 (71) Applicants: UNILEVER N.V. 3013 AL Rotterdam (NL) UNILEVER PLC London EC4P 4BQ (GB)

(72) Inventors: SECEMSKI, Isaac, Israel Edgewater, NJ 07020 (US) NICHOLSON, John, Richard 45 River Road Edgewater, NJ 07020 (US) PIATEK, Bozena, Marianna 45 River Road Edgewater, NJ 07020 (US) TOMLINSON, Alan, Digby Unilever Research NL-3133 AT Vlaardingen (NL) (74) Representative: Tansley, Sally Elizabeth  Unilever PLC, Patent Division, Colworth House Sharbrook, Bedford MK44 1LQ Sharbrook, Bedford MK44 1LQ (GB)