(19)

(11)

EP 1 319 031 A2

(12)

(88) Date of publication A3: 13.06.2002 (43) Date of publication: 18.06.2003 Bulletin 2003/25 (21) Application number: 01971085.4 (22) Date of filing: 14.09.2001

(51) International Patent Classification (IPC)7: C08G 18/00, C08G 18/10, C08G 59/54 (86) International application number: PCT/US0128/946 (87) International publication number: WO 0202/2701 (21.03.2002 Gazette 2002/12)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 15.09.2000 US 663880 (71) Applicant: PPG Industries Ohio, Inc. Cleveland, OH 44111 (US)	(72) Inventors: SWISHER, Robert, G. Pittsburgh, PA 15238 (US) WANG, Alan, E. Gibsonia, PA 15044 (US) (74) Representative: Sternagel, Fleischer, Godemeyer & PartnerPatentanwälte  Braunsberger Feld 29 51429 Bergisch Gladbach 51429 Bergisch Gladbach (DE)