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公开(公告)号：US12091818B2
公开(公告)日：2024-09-17
申请号：US17209388
申请日：2021-03-23
发明人： Kimberly Nelson , Theodora Retsina
IPC分类号： D21C9/00 , C07G1/00 , C08B15/08 , C08B37/00 , C12P7/10 , D21B1/06 , D21B1/12 , D21B1/14 , D21C1/02 , D21C5/00 , D21C11/00 , D21H11/16 , D21H11/18 , C08H8/00 , C09K8/10 , C09K8/34 , C09K8/64 , C09K8/68 , C13K1/02 , D21C3/00 , D21C3/06 , D21C9/10
CPC分类号： D21C9/007 , C07G1/00 , C08B15/08 , C08B37/0057 , C12P7/10 , D21B1/061 , D21B1/12 , D21B1/14 , D21C1/02 , D21C5/005 , D21C11/0007 , D21H11/16 , D21H11/18 , C08H8/00 , C09K8/10 , C09K8/34 , C09K8/64 , C09K8/68 , C13K1/02 , D21C3/003 , D21C3/006 , D21C3/06 , D21C9/10
摘要： Various processes are disclosed for producing nanocellulose materials following steam extraction or hot-water digestion of biomass. Processes are also disclosed for producing nanocellulose materials from a wide variety of starting pulps or pretreated biomass feedstocks. The nanocellulose materials may be used as rheology modifiers in many applications. Water-based and oil-based drilling fluid formulations and additives are provided. Also, water-based and oil-based hydraulic fracturing fluid formulations and additives are provided. In other embodiments, polymer-nanocellulose composites are provided.
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2.发明授权公开(公告)号：US12091333B2
公开(公告)日：2024-09-17
申请号：US18068895
申请日：2022-12-20
发明人： Timothy D. Hall , Maria E. Inman , Stephen T. Synder , Santosh H. Vijapur , E. Jennings Taylor , Thi Xuan Huong Le
CPC分类号： C02F1/46109 , C02F1/469 , D21C9/007 , D21C9/18 , C02F2001/46157 , C02F2201/46 , C02F2201/46115 , C02F2201/46175
摘要： A dewatering apparatus for cellulosic materials includes a chamber for an aqueous solution of a cellulosic material, an inner electrode in the chamber, an outer electrode in the chamber about the inner electrode, and a power supply connected to the inner electrode and the outer electrode applying a voltage potential across the electrodes to remove water associated with the aqueous solution and to dewater the cellulosic materials.
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公开(公告)号：US12077915B2
公开(公告)日：2024-09-03
申请号：US17837144
申请日：2022-06-10
IPC分类号： D21H11/16 , D21C1/02 , D21C3/04 , D21C3/20 , D21C9/00 , D21H11/02 , D21H11/08 , D21H11/18 , D21H27/40
CPC分类号： D21H11/16 , D21C1/02 , D21C3/04 , D21C3/20 , D21C9/007 , D21H11/02 , D21H11/08 , D21H11/18 , D21H27/40
摘要： The present invention provides a pulp product (e.g., paper) comprising cellulose and nanocellulose, wherein the nanocellulose is derived from the cellulose in a mechanical and/or chemical step that is separate from the main pulping process. The pulping process may be thermomechanical pulping or hydrothermal-mechanical pulping, for example. The pulp product is stronger and smoother with the presence of the nanocellulose. The nanocellulose further can function as a retention aid, for a step of forming the pulp product (e.g., in a paper machine). Other embodiments provide a corrugated medium pulp composition comprising cellulose pulp and nanocellulose, wherein the nanocellulose includes cellulose nanofibrils and/or cellulose nanocrystals and the nanocellulose may be hydrophobic. The nanocellulose improves the strength properties of the corrugated medium. In some embodiments, the cellulose pulp is a GreenBox+® pulp and the nanocellulose is derived from the AVAP® process.
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公开(公告)号：US12053729B2
公开(公告)日：2024-08-06
申请号：US18334925
申请日：2023-06-14
摘要： Treatment methods for reduction of (1→3)-β-D-glucan leachables from cellulose-containing filter materials are described.
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公开(公告)号：US12018433B2
公开(公告)日：2024-06-25
申请号：US17579215
申请日：2022-01-19
CPC分类号： D21C9/007 , D21H11/18 , D21H17/675 , D21H21/20
摘要： A process for modifying the paper burst strength enhancing attributes of microfibrillated cellulose, an aqueous suspension comprising said microfibrillated cellulose, and papermaking compositions and paper products comprising said microfibrillated cellulose.
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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：US11827771B2
公开(公告)日：2023-11-28
申请号：US17903232
申请日：2022-09-06
发明人： Theodora Retsina , Kimberly Nelson
IPC分类号： C08L1/02 , C09D101/02 , C08J9/00 , C08J9/36 , D21C3/04 , C08B37/00 , C08H8/00 , C09D197/00 , D21C9/00 , D21C11/00 , D21H11/08 , D21H19/34
CPC分类号： C08L1/02 , C08B37/0057 , C08H8/00 , C08J9/0061 , C08J9/365 , C09D101/02 , C09D197/005 , D21C3/04 , D21C9/007 , D21C11/0007 , D21H11/08 , D21H19/34 , C08J2301/02 , C08J2497/00 , Y02P40/40 , Y10T428/2933 , Y10T428/2991 , Y10T442/20
摘要： An oleophilic and hydrophobic nanocellulose material is disclosed herein, for nanocellulose sponges and other applications. The oleophilic and hydrophobic nanocellulose material comprises lignin-coated cellulose nanofibrils and/or lignin-coated cellulose nanocrystals. In various embodiments, the nanocellulose material is in the form of a 2D coating or layer, or a 3D object (e.g., foam or aerogel). The nanocellulose material may be disposed onto a scaffold. A process is provided for producing an oleophilic and hydrophobic nanocellulose object, comprising fractionating a biomass feedstock with an acid, a solvent for lignin, and water, to generate cellulose-rich solids and a lignin-containing liquor; mechanically treating the cellulose-rich solids to form cellulose fibrils and/or cellulose crystals; generating a nanocellulose object from the intermediate nanocellulose material; exposing the nanocellulose object to the lignin-containing liquor to allow lignin to deposit onto a surface of the nanocellulose object; and recovering the oleophilic and hydrophobic nanocellulose object.
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公开(公告)号：US11753770B2
公开(公告)日：2023-09-12
申请号：US16307380
申请日：2017-06-16
申请人： FPInnovations
发明人： Wadood Yasser Hamad , Chuanwei Miao
摘要： The present disclosure is directed to a Pickering emulsion comprising cellulose filaments. The heterogeneity of the cellulose filament material is critical and beneficial to the formation of stable emulsions. Emulsions with high stability can be prepared by controlling the CF surface properties. It is provided an emulsion comprising an internal phase dispersed in a continuous external phase and cellulose filaments located at the interface of the internal phase and the external phase, wherein the emulsion comprises 50% in volume or more of the internal phase and a method of producing same.
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公开(公告)号：US20230265612A1
公开(公告)日：2023-08-24
申请号：US18004206
申请日：2021-06-23
申请人： AMPPC Finland Oy
发明人： Matti KURKI
摘要： A cooking method wherein partly digested wood based cellulosic raw material is compressed during cooking to provide high molecular weight xylan, lignin and pulp.
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公开(公告)号：US11732411B2
公开(公告)日：2023-08-22
申请号：US17492036
申请日：2021-10-01
IPC分类号： D21C9/00 , D21H11/18 , D21H11/20 , D21H15/02 , D21D1/20 , D21H19/38 , D21B1/32 , D21B1/30 , D21H11/04
CPC分类号： D21C9/007 , D21B1/30 , D21B1/32 , D21C9/001 , D21D1/20 , D21H5/1236 , D21H11/04 , D21H11/18 , D21H11/20 , D21H19/38 , D21H19/385
摘要： Methods of preparing partially dried or essentially completely dried compositions comprising microfibrillated cellulose and an inorganic particulate material may include microfibrillating a fibrous substrate comprising cellulose in an aqueous environment by grinding in the presence of an inorganic particulate material to form an aqueous composition comprising microfibrillated cellulose and inorganic particulate material, wherein the fibrous substrate comprising cellulose has a Canadian Standard freeness equal to or less than 450 cm, wherein the fibrous substrate to the inorganic particulate material are in a ratio of about 99.5:0.5 to about 0.5:99.5, and wherein the microfibrillated cellulose has a fibre steepness of from about 20 to about 50; by treating the aqueous composition comprising microfibrillated cellulose and inorganic particulate material to remove at least a portion or substantially all of the water of the aqueous composition to form a partially dried or essentially completely dried composition comprising microfibrillated cellulose and inorganic particulate material.
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