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LIGNIN-DERIVED THERMOPLASTIC CO-POLYMERS AND METHODS OF PREPARATION

United States Patent Application

20130116383
A1
View the Complete Application at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
The present invention relates to a crosslinked lignin comprising a lignin structure having methylene or ethylene linking groups therein crosslinking between phenyl ring carbon atoms, wherein said crosslinked lignin is crosslinked to an extent that it has a number-average molecular weight of at least 10,000 g/mol, is melt-processible, and has either a glass transition temperature of at least 100.degree. C., or is substantially soluble in a polar organic solvent or aqueous alkaline solution. Thermoplastic copolymers containing the crosslinked lignin are also described. Methods for producing the crosslinked lignin and thermoplastic copolymers are also described.
Naskar, Amit K. (Knoxville, TN), Saito, Tomonori (Knoxville, TN), Pickel, Joseph M. (Knoxville, TN), Baker, Frederick S. (Oak Ridge, TN), Eberle, Cliff (Knoxville, TN), Norris, JR., Robert E. (Knoxville, TN), Mielenz, Jonathan Richard (Rockwood, TN)
UT-BATTELLE, LLC (Oak Ridge TN)
13/ 288,360
November 3, 2011
[0001] This invention was made with government support under Prime Contract No. DE-AC05-00OR22725 awarded by the U.S. Department of Energy. The government has certain rights in the invention.