(19)

(11)

EP 2 914 774 A1

(12)

(43) Date of publication: 09.09.2015 Bulletin 2015/37 (21) Application number: 13850762.9 (22) Date of filing: 18.10.2013

(51) International Patent Classification (IPC):  D21H 17/67(2006.01) D21H 17/41(2006.01) D21H 17/63(2006.01) (86) International application number: PCT/US2013/065732 (87) International publication number: WO 2014/070488 (08.05.2014 Gazette 2014/19)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 01.11.2012 US 201213665963 (71) Applicant: Nalco Company Naperville, IL 60563 (US)	(72) Inventors: CHENG, Weiguo Naperville, Illinois 60564 (US) BROADUS, Katherin M. Aurora, Illinois 60504 (US) SMORON, Dorota Hoffman Estates, Illinois 60169 (US) WILSON, Shawnee M. Downers Grove, Illinois 60515 (US) (74) Representative: Godemeyer Blum Lenze Patentanwälte Partnerschaft mbB - werkpatent  An den Gärten 7 51491 Overath 51491 Overath (DE)