(19)

(11)

EP 2 938 781 A1

(12)

(43) Date of publication: 04.11.2015 Bulletin 2015/45 (21) Application number: 13866663.1 (22) Date of filing: 16.12.2013

(51) International Patent Classification (IPC):  D21H 17/33(2006.01) D21H 17/00(2006.01) D21H 17/63(2006.01) (86) International application number: PCT/US2013/075438 (87) International publication number: WO 2014/105489 (03.07.2014 Gazette 2014/27)

(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: 28.12.2012 US 201213730003 (71) Applicant: Nalco Company Naperville, IL 60563 (US)	(72) Inventors: LI, Xiaojin Harry Palatine, Illinois 60067 (US) RICHARDSON, Paul Pittsburgh, Pennsylvania 15216 (US) YUAN, Qing Qing Shanghai 201824 (CN) DONG, Qun Shanghai 200333 (CN) (74) Representative: Godemeyer Blum Lenze Patentanwälte Partnerschaft mbB - werkpatent  An den Gärten 7 51491 Overath 51491 Overath (DE)