(19)
(11) EP 1 576 016 A1

(12)

(43) Date of publication:
21.09.2005 Bulletin 2005/38

(21) Application number: 03786927.8

(22) Date of filing: 19.11.2003
(51) International Patent Classification (IPC)7C08F 2/38
(86) International application number:
PCT/US2003/037191
(87) International publication number:
WO 2004/060931 (22.07.2004 Gazette 2004/30)
(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: 27.12.2002 US 436762 P
21.10.2003 US 690137

(71) Applicant: Univation Technologies LLC
Houston, TX 77056 (US)

(72) Inventors:
  • LUCAS, Eric
    South Charleston, WV 25309 (US)
  • SCHRECK, David, J.
    Midland, MI 48642 (US)
  • WENZEL, Timothy, T.
    Charleston, WV 25302 (US)
  • GOODE, Mark, G.
    Hurricane, WV 25526 (US)

(74) Representative: Gerstberger, Gisela 
df-mp Dörries Frank-Molnia & Pohlman Triftstrasse 13
80538 München
80538 München (DE)

   


(54) PROCESSES FOR TRANSITIONING BETWEEN ZIEGLER-NATTA AND ALUMOXANE-BASED SINGLE-SITE POLYMERIZATION CATALYSTS