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:
May. 05, 2026
Filed:
Dec. 16, 2020
Eastman Chemical Company, Kingsport, TN (US);
Earl Edmondson Howell, Jr., Cookeville, TN (US);
Michael Paul Ekart, Kingsport, TN (US);
Travis Wynn Keever, Jonesborough, TN (US);
Bob N. Jack, Kingsport, TN (US);
Jonathan Michael Horton, Kingsport, TN (US);
Daniel Lee Martin, Kingsport, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
A method for the manufacture of polyesters with recycle content by feeding to at least one reaction zone recycle feed comprising an ester recycle material selected from the group consisting of r-DMT, transesterified r-DMT and combinations thereof to form a reaction mixture comprising recycled content in at least one reaction zone; reacting the reaction mixture to form a polyester oligomer mixture with recycled content; and polycondensing the recycle content oligomer mixture to form a polyester with recycle content; wherein the feeding step further comprises feeding to at least one reaction zone a virgin feed, the virgin feed including at least one virgin diol component, the virgin feed further comprises a virgin diacid component, and the virgin diacid component is at least 90 mole % terephthalic acid based on the total diacid content of the virgin feed; and wherein the reacting step comprises reacting the reaction mixture at a temperature of at least 250° C. for a total average residence time of between 30 minutes and 12 hours.