(19)

(11)

EP 1 853 687 A1

(12)

(43) Date of publication: 14.11.2007 Bulletin 2007/46 (21) Application number: 05708069.9 (22) Date of filing: 01.03.2005

(51) International Patent Classification (IPC):  C11D 1/72(2006.01) C11D 1/722(2006.01) (86) International application number: PCT/EP2005/050887 (87) International publication number: WO 2006/092171 (08.09.2006 Gazette 2006/36)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (71) Applicant: ECOLAB, INC. St. Paul, MN 55102-1390 (US)	(72) Inventors: KRESSE, Franz 40723 Hilden (DE) MERZ, Thomas 40723 Hilden (DE) (74) Representative: Polypatent  An den Gärten 7 51491 Overath 51491 Overath (DE)