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:
Sep. 26, 2023
Filed:
Nov. 06, 2020
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Porter C. Shannon, Seabrook, TX (US);
Handel D. Bennett, Houston, TX (US);
Nathaniel B. Guy, Baytown, TX (US);
Daniel G. O'Neil, Houston, TX (US);
James L. Schulze, Humble, TX (US);
Michael G. Tribo, Humble, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
Polyethylene copolymers with a structure that provides improved film properties are provided. The copolymers can have a density of about 0.905 to about 0.911 g/cm. The copolymers can also have a DRI/I2 ratio of about 0.0008 to about 0.060, an I2 value of about 0.6 to about 3.8 dg/min, and an I21 value of about 8 to about 57 dg/min. The copolymers having those properties can be produced by introducing ethylene and at least one other olefin comonomer to a single reactor at a comonomer/ethylene mole ratio of about 0.02 to about 0.03 and polymerizing at a temperature of about 76.7° C. to about 80.6° C. and a pressure of about 1,724 kPa to about 2,413 kPa. The copolymers can be used to make films having a 21 mol % Otransmission rate of about 150 to about 200 cc/100 in/24 hr. and hot tack seal initiation temperatures of about 65° C. to 80° C.