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EP 2 152 842 A1

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(43) Date of publication: 17.02.2010 Bulletin 2010/07 (21) Application number: 07729011.2 (22) Date of filing: 11.05.2007

(51) International Patent Classification (IPC):  C11D 3/33(2006.01) C11D 3/20(2006.01) C11D 11/00(2006.01) C11D 1/72(2006.01) C11D 3/06(2006.01) C11D 3/36(2006.01) C11D 1/83(2006.01) C11D 3/34(2006.01) (86) International application number: PCT/EP2007/054559 (87) International publication number: WO 2008/138392 (20.11.2008 Gazette 2008/47)

(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. St. Paul, MN 55102-1390 (US)	(72) Inventor: TYBORSKI, Thomas 40549 Düsseldorf (DE) (74) Representative: Polypatent  Postfach 40 02 43 51410 Bergisch Gladbach 51410 Bergisch Gladbach (DE)