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:
Dec. 23, 2014
Filed:
May. 03, 2012
Patrick J. C. Schouterden, Wachtebeke, BE;
Ruddy A. J. Nicasy, Westerlo, BE;
Sarat Munjal, Lake Jackson, TX (US);
Robert J. Jorgesen, Scott Depot, WV (US);
Burkhard E. Wagner, Highland Park, NJ (US);
Patrick J. C. Schouterden, Wachtebeke, BE;
Ruddy A. J. Nicasy, Westerlo, BE;
Sarat Munjal, Lake Jackson, TX (US);
Robert J. Jorgesen, Scott Depot, WV (US);
Burkhard E. Wagner, Highland Park, NJ (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 preferably 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, and wherein the median particle diameter, D, of the solid catalyst precursor, based upon the total volume of solid catalyst precursor, is from 1 to 13 micrometers; and b) an organoaluminium compound.