(19)

(11)

EP 0 973 857 A1

(12)

(43) Date of publication: 26.01.2000 Bulletin 2000/04 (21) Application number: 98915249.1 (22) Date of filing: 02.04.1998

(51) International Patent Classification (IPC)7: C11D 3/395, C11D 17/04 (86) International application number: PCT/US9806/571 (87) International publication number: WO 9844/082 (08.10.1998 Gazette 1998/40)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE (30) Priority: 02.04.1997 GB 9706653 (71) Applicant: S.C. JOHNSON & SON, INC. Racine,Wisconsin 53403 (US)	(72) Inventors: CALLAGHAN, Ian, C. Berkshire RG4 11JQ (GB) MOODYCLIFFE, Timothy, I. Sunbury-On-ThamesMiddlesex TW16 7BD (GB) AVERY, Richard, W. High WycombeBuckinghamshire HP14 4EB (GB) (74) Representative: Jones, Alan John et al CARPMAELS & RANSFORD43 Bloomsbury Square London, WC1A 2RA London, WC1A 2RA (GB)