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:
May. 31, 2011
Filed:
Feb. 27, 2009
Ashish M. Sukhadia, Bartlesville, OK (US);
Max P. Mcdaniel, Bartlesville, OK (US);
Ted Cymbaluk, Kemah, TX (US);
Rajendra K. Krishnaswamy, Lexington, MA (US);
Lawrence Szmutko, Orange, TX (US);
Ashish M. Sukhadia, Bartlesville, OK (US);
Max P. McDaniel, Bartlesville, OK (US);
Ted Cymbaluk, Kemah, TX (US);
Rajendra K. Krishnaswamy, Lexington, MA (US);
Lawrence Szmutko, Orange, TX (US);
Chevron Phillips Chemical Company LP, The Woodlands, TX (US);
Abstract
A method comprising (a) providing a catalyst comprising chromium and a support having a pore volume of from about 1.7 ml/g to about 3.5 ml/g and a surface area of from about 450 m/g to about 700 m/g, (b) oxidizing the catalyst to form an oxidized catalyst, (c) reducing the oxidized catalyst to form an oxidized reduced catalyst, (d) oxidizing the oxidized reduced catalyst to form an activated catalyst, (e) contacting the activated catalyst with an olefin under conditions suitable to form a polyolefin, and (f) recovering the polyolefin, wherein the polyolefin has a density of greater than about 0.960 g/cc and a melt index of from about 1.3 g/10 min. to about 2.8 g/10 min.