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. 17, 2020
Filed:
Dec. 13, 2018
Eastman Chemical Company, Kingsport, TN (US);
David Scott Porter, Blountville, TN (US);
Wentao Li, Kingsport, TN (US);
Sarah Exley Goetz, Kingsport, TN (US);
Aireal Denise Pressley, Limestone, TN (US);
Amit Vasant Desai, Houston, TX (US);
Yue Rachel Hu, Mountain View, CA (US);
Steven J. Adams, Gray, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
A semi-crystalline polyester comprising a repeat unit of the formula: wherein A is an aliphatic, aromatic, or heterocyclic group; Ris selected from the group consisting of 1,4-butanediol residue and 1,4-cyclohexanedimethanol residue; Ris neopentanediol residue; m is between 50 and 99 inclusive; n is between 1 and 50 inclusive; x is between 1 and 200 inclusive; and wherein said semi-crystalline polyester exhibits a minimum crystallization half-time of about 0.3 minutes or greater, or about 0.5 minutes or greater or about 0.6 minutes or greater or about 0.7 minutes or greater is described. The polyesters of the present invention may in various embodiments demonstrate one or more desirable performance characteristics and accordingly are particularly useful in applications and utilities wherein those high levels of performance for such characteristics are required. A process for forming the semi-crystalline polyester is also disclosed.