(19)

(11)

EP 0 991 744 A1

(12)

(43) Date of publication: 12.04.2000 Bulletin 2000/15 (21) Application number: 98928304.9 (22) Date of filing: 11.05.1998

(51) International Patent Classification (IPC)7: C11D 3/14, C11D 3/30, C11D 3/43, C11D 3/00, C11D 11/00 (86) International application number: PCT/EP9802/986 (87) International publication number: WO 9858/045 (23.12.1998 Gazette 1998/51)

(84) Designated Contracting States: BE DE ES FR GB GR IT NL (30) Priority: 17.06.1997 GB 9712774 (71) Applicants: UNILEVER PLC London EC4P 4BQ (GB) GB  UNILEVER N.V. 3013 AL Rotterdam (NL) BE DE ES FR GR IT NL	(72) Inventors: RENNIE, George, Kerr Wirral,Merseyside L63 9JF (GB) REVELL, Patricia,Unilever Research Port Sunlight Wirral,Merseyside L63 3JW (GB) (74) Representative: Baker, Colin John  Eric Potter ClarksonPark View House58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)