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Novel compositions and methods for the dissolution and depolymerization of lignin

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
The present invention provides for a method for dissolving and/or depolymerizing lignin comprising: (a) providing a composition comprising lignin, (b) contacting the composition with a strong hydrogen donor, such as a polyol, to form a first solution, (c) incubating the first solution at a temperature equal to or less than C., whereby at least 20% by weight of the lignin is dissolved, (d) optionally introducing an oxidation agent to the first solution to form a second solution, wherein the temperature of the second solution is equal to or less than C., whereby lignin is depolymerized, and (e) optionally introducing an anti-solvent to the second solution to precipitate the depolymerized lignin.
Sun, Jian (Albany, CA), Dutta, Tanmoy (Berkeley, CA), Ramakrishnan, Parthasarathi (Fremont, CA), Simmons, Blake A. (San Francisco, CA), Singh, Seema (Mountain House, CA)
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque NM)
15/ 615,777
June 6, 2017
STATEMENT OF GOVERNMENTAL SUPPORT [0002] The invention was made with government support under Contract Nos. DE-AC02-05CH11231 awarded by the U.S. Department of Energy. The government has certain rights in the invention.