Bifuran-modified polyesters

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11970573
APP PUB NO 20220033573A1
SERIAL NO

17227662

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Abstract

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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 (Tm) between 229° C. and 246° C. Reinforced compositions and shaped articles comprising bifuran-modified polyethylene terephthalate and methods of their production are also disclosed.

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Patent Owner(s)

  • EXXONMOBIL CHEMICAL PATENTS INC.; VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cohn, Stephen Spring, US 3 15
Edling, Hans Eliot Radford, US 4 3
Galuska, Alan A Ellijay, US 35 162
Guzman, Javier Kingwood, US 29 192
Kandel, Kapil Humble, US 33 87
Lotz, Monica Houston, US 2 3
Paschke, Edward E Galena, US 38 240
Salciccioli, Michael Ann Arbor, US 31 149
Turner, S Richard Blacksburg, US 61 1003

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