(19)

(11)

EP 1 509 582 A1

(12)

(43) Date of publication: 02.03.2005 Bulletin 2005/09 (21) Application number: 03750088.1 (22) Date of filing: 07.05.2003

(51) International Patent Classification (IPC)7: C10G 9/20 (86) International application number: PCT/US2003/014346 (87) International publication number: WO 2003/095590 (20.11.2003 Gazette 2003/47)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 07.05.2002 US 378307 P 02.08.2002 US 211226 (71) Applicant: Westlake Technology Corporation Houston, TX 77056 (US)	(72) Inventor: KIVLEN, John, A. savannah, GA 31411 (US) (74) Representative: Brown, David Leslie  HASELTINE LAKE,Redcliff Quay120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)