(19)

(11)

EP 2 193 180 A2

(12)

(88) Date of publication A3: 07.05.2009 (43) Date of publication: 09.06.2010 Bulletin 2010/23 (21) Application number: 08799561.9 (22) Date of filing: 16.09.2008

(51) International Patent Classification (IPC):  C10B 57/08(2006.01) C10L 5/14(2006.01) C10L 5/48(2006.01) C10L 5/04(2006.01) C10L 5/44(2006.01) C10L 9/00(2006.01) (86) International application number: PCT/US2008/076476 (87) International publication number: WO 2009/039070 (26.03.2009 Gazette 2009/13)

(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: 18.09.2007 US 857093 (71) Applicant: Nalco Company Naperville, IL 60563-1198 (US)	(72) Inventors: TRAN, Bo L. Chicago IL 60614 (US) HAMNICK, Joseph, M. Virginia Beach, Virginia 23454 (US) (74) Representative: Maggs, Michael Norman et al Kilburn & Strode LLP 20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)