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公开(公告)号：US20220098440A1
公开(公告)日：2022-03-31
申请号：US17498014
申请日：2021-10-11
IPC分类号： C09D197/00 , C12P19/02 , C04B16/02 , C12P19/14 , C09K8/035 , C08B37/00 , C08H7/00 , C08H8/00 , C08L1/02 , C08L5/14 , C08L97/00 , C08L97/02 , C12P7/10 , C13K1/02
摘要： Processes disclosed are capable of converting biomass into high-crystallinity, hydrophobic cellulose. In some variations, the process includes fractionating biomass with an acid (such as sulfur dioxide), a solvent (such as ethanol), and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and depositing lignin onto cellulose fibers to produce lignin-coated cellulose materials (such as dissolving pulp). The crystallinity of the cellulose material may be 80% or higher, translating into good reinforcing properties for composites. 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 hydrophobic cellulose to form completely renewable composites.
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公开(公告)号：US11905341B2
公开(公告)日：2024-02-20
申请号：US17570599
申请日：2022-01-07
IPC分类号： C08B15/08 , C08L1/02 , C08H8/00 , C08B15/02 , D21C3/04 , D21C3/20 , D21C5/00 , D21C9/00 , D21H11/18 , C12P7/10 , C12P19/02
CPC分类号： C08B15/08 , C08B15/02 , C08H8/00 , C08L1/02 , D21C3/04 , D21C3/20 , D21C5/005 , D21C9/007 , D21H11/18 , C12P7/10 , C12P19/02 , C12P2201/00 , C12P2203/00 , Y02E50/10 , Y02E50/30 , Y02P20/54
摘要： 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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公开(公告)号：US11932706B2
公开(公告)日：2024-03-19
申请号：US17163738
申请日：2021-02-01
IPC分类号： C08B15/08 , C07G1/00 , C08B15/00 , C08B15/02 , C08B37/00 , C08H8/00 , C08L1/02 , C12P7/04 , C12P7/10 , C12P7/14 , C12P7/16 , C12P7/28 , C12P7/46 , C12P7/56 , C12P19/02 , C12P19/14 , C13K1/02 , D21C3/04 , D21C3/06 , D21C3/20 , D21C5/00 , D21C9/00 , D21C9/10 , D21C11/00 , D21H11/18
CPC分类号： C08B15/08 , C07G1/00 , C08B15/00 , C08B15/02 , C08B37/0057 , C08H8/00 , C08L1/02 , C12P7/04 , C12P7/10 , C12P7/14 , C12P7/16 , C12P7/28 , C12P7/46 , C12P7/56 , C12P19/02 , C12P19/14 , C13K1/02 , D21C3/04 , D21C3/06 , D21C3/20 , D21C5/00 , D21C5/005 , D21C9/002 , D21C9/007 , D21C9/10 , D21C11/0007 , D21H11/18 , C12P2201/00 , C12P2203/00 , Y02E50/10 , Y02P40/40
摘要： Processes disclosed are capable of converting biomass into high-crystallinity nanocellulose with surprisingly low mechanical energy input. In some variations, the process includes fractionating biomass with an acid (such as sulfur dioxide), a solvent (such as ethanol), 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 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.
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公开(公告)号：US11142668B2
公开(公告)日：2021-10-12
申请号：US16663671
申请日：2019-10-25
IPC分类号： C09D197/00 , C12P19/02 , C04B16/02 , C12P19/14 , C09K8/035 , C08B37/00 , C08H7/00 , C08H8/00 , C08L1/02 , C08L5/14 , C08L97/00 , C08L97/02 , C12P7/10 , C13K1/02 , D21H17/23 , D21H17/25 , D21H19/34 , D21H19/52
摘要： Processes disclosed are capable of converting biomass into high-crystallinity, hydrophobic cellulose. In some variations, the process includes fractionating biomass with an acid (such as sulfur dioxide), a solvent (such as ethanol), and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and depositing lignin onto cellulose fibers to produce lignin-coated cellulose materials (such as dissolving pulp). The crystallinity of the cellulose material may be 80% or higher, translating into good reinforcing properties for composites. 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 hydrophobic cellulose to form completely renewable composites.
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公开(公告)号：US11795345B2
公开(公告)日：2023-10-24
申请号：US17498014
申请日：2021-10-11
IPC分类号： C09D197/00 , C12P19/02 , C04B16/02 , C12P19/14 , C09K8/035 , C08B37/00 , C08H7/00 , C08H8/00 , C08L1/02 , C08L5/14 , C08L97/00 , C08L97/02 , C12P7/10 , C13K1/02 , D21H17/23 , D21H17/25 , D21H19/34 , D21H19/52
CPC分类号： C09D197/005 , C04B16/02 , C08B37/0057 , C08H6/00 , C08H8/00 , C08L1/02 , C08L5/14 , C08L97/005 , C08L97/02 , C09K8/035 , C12P7/10 , C12P19/02 , C12P19/14 , C13K1/02 , C09K2208/08 , C12P2203/00 , D21H17/23 , D21H17/25 , D21H19/34 , D21H19/52 , Y02E50/10 , Y10T428/2991 , C08L1/02 , C08L97/02 , C08L97/02 , C08L1/02 , C04B16/02 , C04B20/1029
摘要： Processes disclosed are capable of converting biomass into high-crystallinity, hydrophobic cellulose. In some variations, the process includes fractionating biomass with an acid (such as sulfur dioxide), a solvent (such as ethanol), and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and depositing lignin onto cellulose fibers to produce lignin-coated cellulose materials (such as dissolving pulp). The crystallinity of the cellulose material may be 80% or higher, translating into good reinforcing properties for composites. 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 hydrophobic cellulose to form completely renewable composites.
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