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:
Apr. 30, 2024
Filed:
Nov. 13, 2019
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (US);
Monica Lotz, Houston, TX (US);
S. Richard Turner, Blacksburg, VA (US);
Hans Eliot Edling, Radford, VA (US);
Kapil Kandel, Humble, TX (US);
Michael Salciccioli, Ann Arbor, MI (US);
Stephen Cohn, Spring, TX (US);
Alan A. Galuska, Ellijay, GA (US);
Javier Guzman, Kingwood, TX (US);
Edward E. Paschke, Galena, IL (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Virginia Tech Intellectual Properties, Inc., Blacksburg, VA (US);
Abstract
Bifuran-modified polyester, polyethylene-terephthalate-co (2,2′-bifuran-5,5′-dicarboxylate), prepared by esterifying or transesterifying a diacid component comprising from 2 to 10 mole percent 2,2′-bifuran-5,5′-dicarboxylate and a diol component with a catalyst compound comprising metal present in an amount of from about 10 to about 450 ppm and polycondensation to form the polyester wherein the polyester has an inherent viscosity of at least 0.5 g/dL, a glass transition temperature (Tg) of 82° C. or more, a semicrystalline melting peak (Tm) with ΔHf equal to or greater than 5 J/g on the second heating ramp, and melting temperature (T) between 229° C. and 246° C. Reinforced compositions and shaped articles comprising bifuran-modified polyethylene terephthalate and methods of their production are also disclosed.