(19)

(11)

EP 1 025 063 A1

(12)

(43) Date of publication: 09.08.2000 Bulletin 2000/32 (21) Application number: 98940932.1 (22) Date of filing: 17.08.1998

(51) International Patent Classification (IPC)7: C05C 11/00 (86) International application number: PCT/US9816/994 (87) International publication number: WO 9908/982 (25.02.1999 Gazette 1999/08)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 17.08.1997 IL 12156097 (71) Applicants: Leket Bar Chemicals Ltd. 42411 Netanya (IL) Safescience, Inc. Boston, MA 02116-4101 (US)	(72) Inventor: TSIVION, Yoram 37808 Givat Ada (IL) (74) Representative: Helbing, Jörg, Dr.Dipl.-Chem. et al Patentanwältevon Kreisler-Selting-Werner,Deichmannhaus am Hauptbahnhof 50667 Köln 50667 Köln (DE)