Back to results
US 2026/0265456 A1Published application
Lignin-based biodegradable polymers and methods of making the same
AssigneeThe Florida State University Research Foundation, Inc.
InventorHoyong Chung
Life of this patent
Estimating the term…
Abstract
Disclosed are methods of forming lignin-based recyclable polymers. The methods comprise using a carbon dioxide-containing gas as a reagent to form a lignin-based polycarbonate. Also disclosed are methods for capturing carbon dioxide gas and recycling lignin-based materials.
Claims4
A lignin-based polycarbonate, comprising units having the formula:
- wherein Ar1 and Ar2 are independently an aromatic ring in a lignin structural moiety.
A method, comprising:
- reacting a lignin comprising a 1,3 diol with carbon dioxide, a first catalyst, and an activating agent, in a first solvent to provide a lignin-monomer comprising a six-atom cyclic carbonate;
- and
- reacting the lignin monomer comprising a six-atom cyclic carbonate with a second catalyst, initiator, or combination thereof, in a second solvent to provide a polycarbonate.
Dependencies are inferred from the claim text.