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EP 2 164 944 A1

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(43) Date of publication: 24.03.2010 Bulletin 2010/12 (21) Application number: 07796891.5 (22) Date of filing: 17.07.2007

(51) International Patent Classification (IPC):  C11D 7/06(2006.01) C11D 7/32(2006.01) C11D 7/28(2006.01) (86) International application number: PCT/US2007/016147 (87) International publication number: WO 2009/011676 (22.01.2009 Gazette 2009/04)

(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 LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (71) Applicant: Ecolab INC. 370 North Wabasha Street St. Paul, MN 55102 (US)	(72) Inventor: BRAGULLA, Siegfried D-40789 Monheim (DE) (74) Representative: Polypatent  Postfach 40 02 43 51410 Bergisch Gladbach 51410 Bergisch Gladbach (DE)