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:
Nov. 12, 2019
Filed:
Jan. 20, 2016
Univation Technologies, Llc, Houston, TX (US);
Daudi A. Abe, Freeport, TX (US);
Brandon C. Locklear, Houston, TX (US);
Univation Technologies, LLC, Houston, TX (US);
Abstract
Methods for extrusion of polyolefins () that utilize melt temperature to control molecular weight and also reduce gels. Disclosed herein is an example method for controlling polymer chain scission in an extrusion system (), comprising: melting a polyolefin resin () in extruder () at a first melt temperature to form a first melt (); passing the first melt () through a screen pack (); forming the first melt) into a first polyolefin product (); melting additional polyolefin resin () of the same grade in the extruder () at a second melt temperature to form a second melt (), wherein the second melt temperature differs from the first melt temperature by 5° C. or more to control chain scission in the extruder (); passing the second melt () through the screen pack (); and forming the second melt () into a second polyolefin product ().