(19)

(11)

EP 2 102 394 A1

(12)

(43) Date of publication: 23.09.2009 Bulletin 2009/39 (21) Application number: 07864252.7 (22) Date of filing: 12.11.2007

(51) International Patent Classification (IPC):  D01D 5/00(2006.01) D01F 6/36(2006.01) D01F 6/16(2006.01) (86) International application number: PCT/US2007/084381 (87) International publication number: WO 2008/073662 (19.06.2008 Gazette 2008/25)

(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 (30) Priority: 14.12.2006 US 610726 (71) Applicant: PPG Industries Ohio, Inc. Cleveland, OH 44111 (US)	(72) Inventors: HELLRING, Stuart D. Pittsburgh, Pennsylvania 15243 (US) RAGUNATHAN, Kaliappa G. Gibsonia, Pennsylvania 15044 (US) BALOG, Kenneth J. Tarentum, Pennsylvania 15084 (US) (74) Representative: Polypatent  Braunsberger Feld 29 51429 Bergisch Gladbach 51429 Bergisch Gladbach (DE)