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(11)

EP 2 231 942 A1

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(43) Date of publication: 29.09.2010 Bulletin 2010/39 (21) Application number: 08865987.5 (22) Date of filing: 22.12.2008

(51) International Patent Classification (IPC):  E04B 1/84(2006.01) D01D 5/11(2006.01) E04B 9/04(2006.01) (86) International application number: PCT/US2008/087899 (87) International publication number: WO 2009/086245 (09.07.2009 Gazette 2009/28)

(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: 20.12.2007 US 8882 (71) Applicant: E. I. du Pont de Nemours and Company Wilmington, DE 19898 (US)	(72) Inventor: LEVIT, Natalia, V. Glen Allen VA 23059 (US) (74) Representative: Heinemann, Monica  Abitz & Partner Patentanwälte Hörselbergstrasse 5 81677 München 81677 München (DE)