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:
Oct. 15, 2024
Filed:
Apr. 25, 2019
Northwestern University, Evanston, IL (US);
Cornell University, Ithaca, NY (US);
David J. Fortman, Pittsburgh, PA (US);
William R. Dichtel, Wilmette, IL (US);
Daylan T. Sheppard, Evanston, IL (US);
Northwestern University, Evanston, IL (US);
Cornell University, Ithaca, NY (US);
Abstract
Disclosed herein are polyurethane compositions and methods for reprocessing cross-linked polyurethane compositions. The polyurethane composition comprises a network polymer and a polyurethane exchange catalyst permeated within the network polymer. The network polymer comprises a dynamic network formed from an isocyanate constitutional unit and a second constitution unit having a hydroxyl group capable of reacting with an isocyanate group of the isocyanate constitutional unit to form a urethane bond. The catalyst comprises a metal atom and a ligand coordinated to the metal atom.