(19)

(11)

EP 2 024 565 A2

(12)

(88) Date of publication A3: 24.01.2008 (43) Date of publication: 18.02.2009 Bulletin 2009/08 (21) Application number: 07794834.7 (22) Date of filing: 11.05.2007

(51) International Patent Classification (IPC):  D21H 21/16(2006.01) (86) International application number: PCT/US2007/011518 (87) International publication number: WO 2007/133729 (22.11.2007 Gazette 2007/47)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 12.05.2006 US 433365 (71) Applicant: HERCULES INCORPORATED Wilmington, DE 19894-0001 (US)	(72) Inventors: TAGGART, Thomas E. Jacksonville, FL 32256 (US) BARTON, Dennis, W. Hockessin, DE 19707 (US) (74) Representative: HOFFMANN EITLE  Patent- und Rechtsanwälte Arabellastrasse 4 81925 München 81925 München (DE)