(19)

(11)

EP 1 722 963 A2

(12)

(88) Date of publication A3: 21.09.2006 (43) Date of publication: 22.11.2006 Bulletin 2006/47 (21) Application number: 04814841.5 (22) Date of filing: 16.12.2004

(51) International Patent Classification (IPC):  B29D 22/00(2006.01) B65D 23/00(2006.01) B29D 23/00(2006.01) B05D 1/36(2006.01) (86) International application number: PCT/US2004/042703 (87) International publication number: WO 2005/062825 (14.07.2005 Gazette 2005/28)

(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 MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR LV MK YU (30) Priority: 22.12.2003 US 531785 P (71) Applicant: Nova Chemicals Inc. Moon Township, Pennsylvania 15108 (US)	(72) Inventors: RUSSELL, Jeffory, E. Sewickley, PA 15143 (US) COWAN, David, Allen Cranberry Township, PA 16066 (US) PIISPANEN, Dennis, H. Beaver, PA 15009 (US) TANG, Jiansheng Mars, PA 16046 (US) WILLIAMS, Michael, T. Beaver Falls, PA 15010 (US) (74) Representative: Watson, Robert James et al Mewburn Ellis LLP York House 23 Kingsway London WC2B 6HP London WC2B 6HP (GB)