(19)

(11)

EP 2 069 734 A2

(12)

(43) Date of publication: 17.06.2009 Bulletin 2009/25 (21) Application number: 07811423.8 (22) Date of filing: 17.08.2007

(51) International Patent Classification (IPC):  G01J 3/46(2006.01) (86) International application number: PCT/US2007/018346 (87) International publication number: WO 2008/024295 (28.02.2008 Gazette 2008/09)

(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: 22.08.2006 US 839347 P (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington, DE 19898 (US)	(72) Inventor: KETTLER, Wilhelm 42105 Wuppertal (DE) (74) Representative: Biering, Christine  DuPont Performance Coatings GmbH und Co. KG Christbusch 25 42285 Wuppertal 42285 Wuppertal (DE)