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. 10, 2022
Filed:
Sep. 21, 2021
Chevron Phillips Chemical Company Lp, The Woodlands, TX (US);
Scott E. Kufeld, Houston, TX (US);
Max P. McDaniel, Bartlesville, OK (US);
Kenneth A. Dooley, Porter, TX (US);
Chevron Phillips Chemical Company LP, The Woodlands, TX (US);
Abstract
Polymerization processes for producing ethylene-based plastomers and elastomers having densities less than 0.91 g/cmutilize a metallocene-based catalyst system containing a chemically-treated solid oxide. These polymerization processes can be conducted in a slurry reactor, a solution reactor, and/or a gas phase reactor. Ethylene polymers produced from the polymerization process can be characterized by a density of less than 0.91 g/cm, a CY-a parameter of less than 0.2, and a ratio of HLMI/MI of at least 30, or a density less than 0.91 g/cm, a CY-a parameter from 0.25 to 0.75, and a ratio of Mw/Mn from 2 to 3.