The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2012
Filed:
Jul. 06, 2005
Patrick J. C. Schouterden, Wachtebeke, BE;
Ruddy Nicasy, Westerlo, BE;
Sarat Munjal, Lake Jackson, TX (US);
Burkhard E. Wagner, Highland Park, NJ (US);
Robert J. Jorgensen, Scott Depot, WV (US);
Patrick J. C. Schouterden, Wachtebeke, BE;
Ruddy Nicasy, Westerlo, BE;
Sarat Munjal, Lake Jackson, TX (US);
Burkhard E. Wagner, Highland Park, NJ (US);
Robert J. Jorgensen, Scott Depot, WV (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The present invention relates to a process of producing an ethylene polymer composition in multiple stages of which the first stage is a slurry polymerization stage, in the presence of a catalyst system comprising a) a solid catalyst precursor comprising a transition metal selected from titanium and vanadium; magnesium, a halide, optionally an electron donor, and a solid particulate material comprising an inorganic oxide, wherein the median particle diameter of the solid catalyst precursor based upon the total volume of solid catalyst precursor, D, is from 1 to 13 micrometers; and b) an organoaluminium compound.