(19)

(11)

EP 2 160 362 A2

(12)

(88) Date of publication A3: 22.01.2009 (43) Date of publication: 10.03.2010 Bulletin 2010/10 (21) Application number: 08716309.3 (22) Date of filing: 06.03.2008

(51) International Patent Classification (IPC):  C02F 1/32(2006.01) (86) International application number: PCT/EP2008/001794 (87) International publication number: WO 2008/128600 (30.10.2008 Gazette 2008/44)

(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 MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 18.04.2007 DE 102007018670 25.01.2008 WO PCT/EP2008/000581 (71) Applicant: Wedeco AG 32051 Herford (DE)	(72) Inventors: SIEF, Rolf 33602 Bielefeld (DE) KRÜGER, Friedhelm 32657 Lemgo (DE) (74) Representative: Lenzing Gerber Stute  Partnerschaft von Patentanwälten Bahnstraße 9 40212 Düsseldorf 40212 Düsseldorf (DE)