SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
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N/A
Issued Date -
Feb 3, 2022
app pub date -
Oct 18, 2021
filing date -
Oct 18, 2021
priority date (Note) -
Published
status (Latency Note)
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Abstract
Processes disclosed are capable of converting biomass into high-crystallinity nanocellulose with low mechanical energy input. In some variations, the process includes fractionating biomass with sulfur dioxide or a sulfite compound and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and mechanically treating the cellulose-rich solids to form nanofibrils and/or nanocrystals. The total mechanical energy may be less than 500 kilowatt-hours per ton. The crystallinity of the nanocellulose material may be 80% or higher, translating into good reinforcing properties for composites. The nanocellulose material may include nanofibrillated cellulose, nanocrystalline cellulose, or both. In some embodiments, the nanocellulose material is hydrophobic via deposition of some lignin onto the cellulose surface. Optionally, sugars derived from amorphous cellulose and hemicellulose may be separately fermented, such as to monomers for various polymers. These polymers may be combined with the nanocellulose to form completely renewable composites.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
GRANBIO INTELLECTUAL PROPERTY HOLDINGS LLC | 300 MCINTOSH PARKWAY THOMASTON BIOREFINERY THOMASTON GA 30286 |
International Classification(s)

- 2021 Application Filing Year
- C13K Class
- 38 Applications Filed
- 15 Patents Issued To-Date
- 39.48 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
NELSON, Kimberly | Atlanta, US | 90 | 486 |
# of filed Patents : 90 Total Citations : 486 | |||
O'CONNOR, Ryan | Minnetrista, US | 40 | 360 |
# of filed Patents : 40 Total Citations : 360 | |||
PYLKKANEN, Vesa | Atlanta, US | 112 | 648 |
# of filed Patents : 112 Total Citations : 648 | |||
RETSINA, Theodora | Atlanta, US | 156 | 843 |
# of filed Patents : 156 Total Citations : 843 |
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- 0 Citation Count
- C13K Class
- 0 % this patent is cited more than
- 3 Age
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