(19)

(11)

EP 0 764 200 A1

(12)

(43) Date of publication: 26.03.1997 Bulletin 1997/13 (21) Application number: 95920860.0 (22) Date of filing: 22.05.1995

(51) International Patent Classification (IPC):  C11D 3/ 20( . ) C11D 3/ 33( . ) C11D 3/ 39( . ) C11D 3/ 28( . ) C11D 3/ 36( . ) (86) International application number: PCT/EP1995/001943 (87) International publication number: WO 1995/033816 (14.12.1995 Gazette 1996/01)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 08.06.1994 GB 19940011495 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) UNILEVER N.V. 3013 AL Rotterdam (NL)	(72) Inventors: ALLAN, Alexander Merseyside L63 9HE (GB) OAKES, John Winsford, Cheshire CW7 1LH (GB) (74) Representative: Elliott, Peter William  Unilever plc Patent Division Colworth House Sharnbrook Bedford MK44 1LQ Bedford MK44 1LQ (GB)