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(11)

EP 2 550 385 A2

(12)

(88) Date of publication A3: 02.02.2012 (43) Date of publication: 30.01.2013 Bulletin 2013/05 (21) Application number: 11760014.8 (22) Date of filing: 22.03.2011

(51) International Patent Classification (IPC):  D04H 1/42(2012.01) D01F 1/10(2006.01) D01F 8/04(2006.01) D01F 8/14(2006.01) (86) International application number: PCT/US2011/029296 (87) International publication number: WO 2011/119520 (29.09.2011 Gazette 2011/39)

(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 (30) Priority: 22.03.2010 US 316061 P (71) Applicant: E.I. Du Pont De Nemours And Company Wilmington, Delaware 19898 (US)

(72) Inventors: KRISHNAMURTHY, Lakshmi Wilmington, DE 19808 (US) RITTER, Joachim, C. Wilmington, DE 19810 (US) POLLINO, Joel, M. Elkton, MD 21921 (US) POTTIGER, Michael, T. Media, PA 19063 (US) HOWE, John, C. Bear, DE 19701 (US) LAURA JR, David, Matthews La Vergne, TN 37086 (US) HUANG, Zheng-Zheng Hockessin, DE 19707 (US) SAMUELSON, Harry, Vaughn Chadds Ford, PA 19317 (US) DUFF, Robert, John Newark, DE 19702 (US) (74) Representative: Matthews, Derek Peter  Dehns St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)