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公开(公告)号：US20250011584A1
公开(公告)日：2025-01-09
申请号：US18668354
申请日：2024-05-20
Applicant: GranBio Intellectual Property Holdings, LLC
Inventor： Kimberly NELSON , Ryan P. O'CONNOR , Theodora RETSINA
IPC: C08L1/04 , B82Y30/00 , C08B15/08 , C08H8/00 , C08J3/00 , C08L1/02 , C12P7/10 , C12P7/40 , C12P19/02 , D21B1/02 , D21C5/00 , D21C9/00 , D21C11/00 , D21H11/18
Abstract: A polymer-nanocellulose-lignin composite as disclosed comprises a polymer, nanocellulose, and lignin, wherein lignin forms a hydrophobic interface between the polymer and the nanocellulose. In some variations, a process is disclosed for producing a polymer-nanocellulose-lignin composite material, comprising: fractionating lignocellulosic biomass in the presence of an acid, a solvent for lignin, and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin, wherein lignin deposits onto fiber surfaces or into fiber pores; mechanically treating the cellulose-rich solids to form a hydrophobic nanocellulose material comprising cellulose fibrils and/or cellulose crystals; hydrolyzing the hemicellulose to generate fermentable hemicellulosic sugars; fermenting the fermentable hemicellulosic sugars to generate a monomer or monomer precursor; polymerizing the monomer to produce a polymer; and combining the polymer with the lignin-coated nanocellulose to generate a polymer-nanocellulose-lignin composite material for use in a wide variety of products.
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公开(公告)号：US20220002609A1
公开(公告)日：2022-01-06
申请号：US17201047
申请日：2021-03-15
Applicant: GranBio Intellectual Property Holdings, LLC
Inventor： Jean-Pierre MONCLIN , Kimberly NELSON , Theodora RETSINA
IPC: C09K8/32 , C09K8/035 , C09K8/64 , C09K8/68 , C09K8/88 , C09K8/90 , C09K8/80 , C09K8/82 , C09K8/10
Abstract: This disclosure provides drilling fluids and additives as well as fracturing fluids and additives that contain cellulose nanofibers and/or cellulose nanocrystals. In some embodiments, hydrophobic nanocellulose is provided which can be incorporated into oil-based fluids and additives. These water-based or oil-based fluids and additives may further include lignosulfonates and other biomass-derived components. Also, these water-based or oil-based fluids and additives may further include enzymes. The drilling and fracturing fluids and additives described herein may be produced using the AVAP® process technology to produce a nanocellulose precursor, followed by low-energy refining to produce nanocellulose for incorporation into a variety of drilling and fracturing fluids and additives.
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公开(公告)号：US20210363330A1
公开(公告)日：2021-11-25
申请号：US17318108
申请日：2021-05-12
Applicant: GranBio Intellectual Property Holdings, LLC
Inventor： Kimberly NELSON , Ryan P. O'CONNOR , Theodora RETSINA
IPC: C08L1/04 , D21C9/00 , D21C11/00 , D21H11/18 , C12P7/40 , B82Y30/00 , C08H8/00 , C08L1/02 , C12P7/10 , D21C5/00 , C08B15/08 , C08J3/00 , C12P19/02 , D21B1/02
Abstract: A polymer-nanocellulose-lignin composite as disclosed comprises a polymer, nanocellulose, and lignin, wherein lignin forms a hydrophobic interface between the polymer and the nanocellulose. In some variations, a process is disclosed for producing a polymer-nanocellulose-lignin composite material, comprising: fractionating lignocellulosic biomass in the presence of an acid, a solvent for lignin, and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin, wherein lignin deposits onto fiber surfaces or into fiber pores; mechanically treating the cellulose-rich solids to form a hydrophobic nanocellulose material comprising cellulose fibrils and/or cellulose crystals; hydrolyzing the hemicellulose to generate fermentable hemicellulosic sugars; fermenting the fermentable hemicellulosic sugars to generate a monomer or monomer precursor; polymerizing the monomer to produce a polymer; and combining the polymer with the lignin-coated nanocellulose to generate a polymer-nanocellulose-lignin composite material for use in a wide variety of products.
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公开(公告)号：US20210069378A1
公开(公告)日：2021-03-11
申请号：US16976803
申请日：2019-03-07
Inventor： Kimberly NELSON , Iain S. WHITAKER , Zita M. JESSOP , Ayesha AL-SABAH
Abstract: Some variations of the invention provide a bioink composition for 3D bioprinting, comprising: nanocellulose in the form of nanocellulose crystals, nanocellulose fibrils, or preferably a combination thereof; alginate that is ionically crosslinkable in the presence of an ionic crosslinking agent; and water. The nanocellulose-alginate bioinks have favorable rheological, swelling, and biocompatibility properties for extrusion-based bioprinting. It is experimentally demonstrated that nanocellulose-alginate bioinks with human nasoseptal chondrocytes enable cartilage bioprinting at high resolution. The disclosed nanocellulose has been proven to be compatible with cell survival and proliferation; to possess nanoscale and microscale architectures mimicking the native extracellular environment, encouraging differentiation and tissue formation; and to have ideal rheological properties to allow extrusion 3D bioprinting. Bioink with a unique blend of crystal and fibril nanocellulose produces a very stable construct volume in culture.
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公开(公告)号：US20250043029A1
公开(公告)日：2025-02-06
申请号：US18738043
申请日：2024-06-09
Applicant: GranBio Intellectual Property Holdings, LLC
Inventor： Theodora RETSINA , Kimberly NELSON
Abstract: A composition comprising nanocellulose is disclosed, wherein the nanocellulose contains very low or essentially no sulfur content. The nanocellulose may be in the form of cellulose nanocrystals, cellulose nanofibrils, or both. The nanocellulose is characterized by a crystallinity of at least 80%, an onset of thermal decomposition of 300° F. or higher, and a low light transmittance over the range 400-700 nm. Other variations provide a composition comprising lignin-coated hydrophobic nanocellulose, wherein the nanocellulose contains very low or essentially no sulfur content. Some variations provide a composition comprising nanocellulose, wherein the nanocellulose contains about 0.1 wt % equivalent sulfur content, or less, as SO4 groups chemically or physically bound to the nanocellulose. In some embodiments, the nanocellulose contains essentially no hydrogen atoms (apart from hydrogen structurally contained in nanocellulose itself) bound to the nanocellulose. Various compositions, materials, and products may incorporate the nanocellulose compositions disclosed herein.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20230242715A1
公开(公告)日：2023-08-03
申请号：US18103454
申请日：2023-01-30
Applicant: GranBio Intellectual Property Holdings, LLC
Inventor： Kimberly NELSON
CPC classification number: C08J3/22 , C08J5/02 , C08J2321/02
Abstract: Improved processes and systems are disclosed for making masterbatches of particulates to be incorporated into polymers. In some variations, a process for making a particulate masterbatch comprises the sequential steps of: providing particulates; conveying an aqueous polymer latex and the particulates to a mixing unit, thereby generating a particulate-latex mixture comprising water; conveying the particulate-latex mixture to a homogenizer; conveying the homogenized particulate-latex mixture to a centrifuge to remove a first portion of water; and then conveying the dewatered and homogenized particulate-latex mixture to a screw mixer configured to remove a second portion of water, thereby generating a particulate masterbatch. Other variations employ polymer solids rather than a polymer latex. The processes and systems enable higher energy efficiency, more robust operability that minimizes process fouling, and exceptional particulate dispersion within the masterbatch. Also, these processes do not require the use of a latex coagulant.
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公开(公告)号：US20230055478A1
公开(公告)日：2023-02-23
申请号：US17903232
申请日：2022-09-06
Applicant: GranBio Intellectual Property Holdings, LLC
Inventor： Theodora RETSINA , Kimberly NELSON
IPC: C08L1/02 , C09D101/02 , C08J9/00 , C08J9/36 , D21C3/04 , C08B37/00 , C08H8/00 , C09D197/00 , D21C9/00 , D21C11/00 , D21H11/08 , D21H19/34
Abstract: 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：US20210395493A1
公开(公告)日：2021-12-23
申请号：US17285600
申请日：2019-10-21
Inventor： Charles R. HERD , Zachary A. COMBS , Lewis B. TUNNICLIFFE , Kimberly NELSON , Shaobo PAN
Abstract: Nanocellulose dispersion compositions containing a partitioning agent and a nanocellulose, and methods of making the nanocellulose dispersion compositions, are disclosed. These compositions can promote improved dispersibility of the nanocellulose fibrils and nanocellulose crystals in polymer matrices, such as in elastomer formulations for use in tire production.
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公开(公告)号：US20210155775A1
公开(公告)日：2021-05-27
申请号：US17062648
申请日：2020-10-05
Applicant: GranBio Intellectual Property Holdings, LLC
Inventor： Asis Kumar BANERJIE , Kimberly NELSON
IPC: C08L1/04 , C08L101/00 , C08L67/04 , C08L25/06 , C08H8/00 , C09D197/00
Abstract: This disclosure provides a polymer composite including a polymer, nanocellulose, and a compatibilizer, wherein the nanocellulose comprises cellulose nanocrystals and/or cellulose nanofibrils, and wherein the compatibilizer comprises a maleated polymer. In some embodiments, the nanocellulose includes lignin-coated nanocellulose. The polymer may be selected from polyethylene, polypropylene, polystyrene, polylactide, or poly(ethylene terephthalate). The maleated polymer may be selected from maleated polyethylene, maleated polypropylene, maleated polystyrene, maleated polylactide, or maleated poly(ethylene terephthalate. Other variations provide a process for compatibilizing a polymer with nanocellulose, comprising: providing a polymer; providing nanocellulose comprising cellulose nanocrystals and/or cellulose nanofibrils; providing a maleated polymer; and combining the polymer, the nanocellulose, and the maleated polymer, wherein the maleated polymer functions as a compatibilizer between the polymer and the nanocellulose.
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公开(公告)号：US20250059709A1
公开(公告)日：2025-02-20
申请号：US18820554
申请日：2024-08-30
Applicant: GranBio Intellectual Property Holdings, LLC
Inventor： Theodora RETSINA , Kimberly NELSON , Lee HILL , Vesa PYLKKANEN , Timothy J. GALLIFORD
IPC: D21H11/16 , D21C1/02 , D21C3/04 , D21C3/20 , D21C9/00 , D21H11/02 , D21H11/08 , D21H11/18 , D21H27/40
Abstract: 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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