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. 23, 2023
Filed:
Apr. 16, 2021
Uop Llc, Des Plaines, IL (US);
Erin Broderick, Arlington Heights, IL (US);
Rodrigo Lobo, Des Plaines, IL (US);
Francis Lupton, Evanston, IL (US);
Shurong Yang, Des Plaines, IL (US);
Raymond Shih, Elgin, IL (US);
Andrea Bozzano, Northbrook, IL (US);
Hayim Abrevaya, Kenilworth, IL (US);
UOP LLC, Des Plaines, IL (US);
Abstract
A process is provided of treating a feed comprising polyethylene terephthalate comprising dissolving said feed in a polar solvent at a temperature between about 100 to 250° C. to produce a dissolved feed; then adding an anti-solvent that is less polar than said polar solvent followed by cooling a resulting mixture resulting in precipitation of purified polyethylene terephthalate and then separation of solid purified polyethylene terephthalate from remaining liquids.