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. 16, 2026
Filed:
Nov. 22, 2021
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Wen Li, Houston, TX (US);
Haiqing Peng, Sugar Land, TX (US);
Michael A. Leaf, Houston, TX (US);
Kevin A. Stevens, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
Provided herein are metallocene-catalyzed polyethylene compositions that exhibit a high degree of broad orthogonal composition distribution ('BOCD'), meaning that they have a relatively high degree of short-chain branching in higher-molecular-weight chains, as compared to the short-chain branching in lower-molecular weight chains. The compositions may have 80 to 99.9 wt % units derived from ethylene and 0.1 to 20 wt % units derived from a Cto Cα-olefin comonomer; density from 0.925 to 0.950 g/cm, melt index (I) within the range from 0.1 to 5 g/10 min, and molecular weight distribution (Mw/Mn) within the range from 4.0 to 8.0. The polyethylene compositions may be formed any suitable polymerization method, although methods according to some embodiments may include utilizing a pre-trim catalyst slurry that is optionally combined with trim catalyst solution to achieve on-the-fly adjustment of catalyst ratios for producing these polyethylene compositions among other polyethylene compositions in a production campaign.