(19)

(11)

EP 2 539 492 A1

(12)

(43) Date of publication: 02.01.2013 Bulletin 2013/01 (21) Application number: 10708914.6 (22) Date of filing: 26.02.2010

(51) International Patent Classification (IPC):  D02G 3/44(2006.01) D01F 1/10(2006.01) A47L 13/20(2006.01) (86) International application number: PCT/EP2010/001192 (87) International publication number: WO 2011/103885 (01.09.2011 Gazette 2011/35)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (71) Applicant: Ecolab Inc. St. Paul, MN 55102-1390 (US)	(72) Inventors: UHL, Stephan 40789 Monheim (DE) LEUCHTEN, Elke 40597 Düsseldorf (DE) (74) Representative: Polypatent  An den Gärten 7 51491 Overath 51491 Overath (DE)