Solvent-based processes for producing nanocellulose, and compositions and products produced therefrom

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United States of America Patent

PATENT NO 11905341
SERIAL NO

17570599

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Abstract

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The present invention provides a process for producing a nanocellulose material, comprising: fractionating a lignocellulosic biomass feedstock in the presence of a solvent for lignin and water, but no acid catalyst, to generate cellulose-rich solids; and then mechanically treating the cellulose-rich solids to form a nanocellulose material comprising cellulose nanofibrils and/or cellulose nanocrystals. Many organic or inorganic solvents are possible. In some embodiments, the solvent for lignin is an oxygenated organic compound, such as a C1-C18 alcohol, e.g. ethanol, ethylene glycol, propanol, propanediol, glycerol, butanol, or butanediol. The solvent for lignin may be an aromatic alcohol, such as phenol, cresol, or benzyl alcohol. The solvent for lignin may be a ketone, an aldehyde, or an ether, such as methyl ethyl ketone or diethyl ether. The solvent for lignin may be a non-oxygenated alkane, olefin, or aromatic hydrocarbon. In some embodiments, the solvent for lignin is an ionic liquid.

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Patent Owner(s)

Patent OwnerAddress
GRANBIO INTELLECTUAL PROPERTY HOLDINGS LLC300 MCINTOSH PARKWAY IP DEPT THOMASTON GA 30286

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nelson, Kimberly Atlanta, US 90 486
O'Connor, Ryan Minnetrista, US 40 360
Pylkkanen, Vesa Atlanta, US 112 648
Retsina, Theodora Atlanta, US 156 843

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