Abstract: Cellulose materials and methods of making the cellulose materials are described herein. The method can include contacting a cotton fabric with an oxidizing system to obtain an oxidized cotton material and processing the oxidized cotton material to form the cellulose material. The oxidizing system can include an aqueous mixture of a N-oxyl compound and a hypochlorite compound. During oxidation, the pH of the aqueous mixture can be maintained at from 8.5 to 11. Cellulose products can be formed from the cellulose materials. For example, the cellulose products can be used to form a packaging material, a biomedical device or implant, a drug delivery material, a fiber, a textile material, a template for electronic components, or a separation membrane. Methods of making the cellulose product include dissolving or suspending an active ingredient in a medium comprising the cellulose material.
Type:
Grant
Filed:
June 9, 2017
Date of Patent:
December 13, 2022
Assignee:
Board of Regents, The University of Texas System
Abstract: Anti-heparanase compounds for the treatment of diabetes are described. The anti-heparanase compounds are high affinity, synthetic glycopolymers that result in minimal anticoagulant activity. Stereoselective fluorinated forms of these compounds are also provided.
Type:
Grant
Filed:
December 9, 2020
Date of Patent:
December 13, 2022
Assignee:
Wayne State University
Inventors:
Hien M. Nguyen, Kezhong Zhang, Ravi Sankar Loka
Abstract: Disclosed is a new composite material comprising nanocellulose and hemp or a hemp-derived component, such as pure hemp, hemp bast fibers, hemp inner fibers, hemp shives, hemp leaves, hemp seeds, or ground hemp. The nanocellulose may be hydrophobic or hydrophilic, and may include cellulose nanocrystals, cellulose nanofibrils, cellulose microfibrils, or a combination thereof. This invention provides construction blocks or panels; engineered parts; fire-resistant objects; coatings; containers; textile compositions; and fabric materials, for example. The composite material may also include one or more additives to modify mechanical, thermal, chemical, and/or electrical properties. The addition of nanocellulose can improve the mechanical properties of hemp-containing concrete mixtures to improve compressive strength for construction purposes.
Abstract: The present invention provides compositions comprising hyaluronan with high elasticity, as well as methods for improving joint function, reducing pain associated with joint function and treating osteoarthritis by introducing into a joint a therapeutically effective amount of a composition comprising hyaluronan with high elasticity.
Abstract: A method of forming a film comprising nanocellulose having an Oxygen Transmission Rate (OTR) value in the range of 0.1 to 300 cc/m2/24 h at 38° C. and 85% relative humidity (RH), and having a basis weight in the range of in the range of 0.1 to 45 g/m2 wherein the method comprises the steps of; providing a suspension comprising nanocellulose, forming at least one layer of a web or a film from said suspension; drying said formed web or film to a dry content of at least 65 weight-%, wherein said method further comprises the steps of; treating at least one side of said dewatered and dried web or film with ultra violet (UV) or electron beam (EB) irradiation; and wherein at least one cooling step is provided in connection with or after the UV or EB treatment step.
Type:
Grant
Filed:
October 31, 2017
Date of Patent:
December 6, 2022
Assignee:
Stora Enso OYJ
Inventors:
Esa Saukkonen, Isto Heiskanen, Kaj Backfolk, Ville Ribu
Abstract: The present invention provides a novel method for producing carboxymethylated cellulose, the method making it possible to economically obtain a high-transparency cellulose nanofiber dispersion. In the carboxymethylation of cellulose, mercerization is carried out in a solvent comprising mainly water, and then carboxymethylation is carried out in a mixed solvent of water and an organic solvent. A nanofiber dispersion of high-transparency carboxymethylated cellulose can be obtained by defibrating the resulting carboxymethylated cellulose.
Type:
Grant
Filed:
December 5, 2018
Date of Patent:
December 6, 2022
Assignee:
NIPPON PAPER INDUSTRIES CO., LTD.
Inventors:
Kazuhiko Inoue, Takeshi Nakatani, Yusuke Tada
Abstract: The present invention provides hyaluronic acid derivatives including one or more of each of repeating units represented by the formulae (Ia), (Ib), and (Ic) in which certain cationic sites, certain hydrophobic sites, and certain hydrophilic sites have been introduced. In addition, the present invention provides complexes of the hyaluronic acid derivatives with a drug and pharmaceutical compositions including the hyaluronic acid derivatives, in particular, complexes of the hyaluronic acid derivatives with a drug.
Abstract: The present disclosure relates to a novel hydrogel, and to method of making and using the novel hydrogel. The novel hydrogel is a reaction product of a water soluble laccase cross-linked arabinoxylan and an acid, and has a pH value of 1.5-2.5.
Abstract: Provided is a novel cyclic oligosaccharide derived from cellulose. The cyclic oligosaccharide is a cyclic oligosaccharide of Formula (1) having a ?-1,4 glucosidic bond. In the formula, R represents a hydrogen atom or a substituent thereof, a plurality of the Rs may be identical or different, and n represents an integer of 0 to 3.
Abstract: Compounds are described and characterized that bind guanine quadruplexes of DNA or RNA. Binding data and inhibition of growth data of five cancer cell lines are presented.
Type:
Grant
Filed:
November 6, 2018
Date of Patent:
November 8, 2022
Inventors:
Caitlin Miron, Anne Petitjean, Jean-Louis Mergny
Abstract: The invention relates to a process for the manufacture of an alkylfluoroacrylate starting from alkylfluoroacetate and an oxalic acid ester, wherein an alkane liquid under the reaction conditions is applied as the solvent in one of the reaction steps.
Abstract: A nucleophilic substitution reaction to crosslink cyclodextrin (CD) polymer with rigid aromatic groups, providing a high surface area, mesoporous CD-containing polymers (P-CDPs). The P-CDPs can be used for removing organic contaminants from water. By encapsulating pollutants to form well-defined host-guest complexes with complementary selectivities to activated carbon (AC) sorbents. The P-CDPs can rapidly sequester pharmaceuticals, pesticides, and other organic micropollutants, achieving equilibrium binding capacity in seconds with adsorption rate constants 15-200 times greater than ACs and nonporous CD sorbents. The CD polymer can be regenerated several times, through a room temperature washing procedure, with no loss in performance.
Type:
Grant
Filed:
October 28, 2020
Date of Patent:
November 8, 2022
Assignee:
CORNELL UNIVERSITY
Inventors:
William R. Dichtel, Alaaeddin Alsbaiee, Brian J. Smith, Juan Hinestroza, Diego Alzate-Sanchez, Leilei Xiao, Yuhan Ling, Damian Helbling
Abstract: The present invention provides a method for the production of chemically derivatized nanocellulose, comprising the step of a. contacting a precursor cellulosic material with a chemically derivatizing composition to form a liquid reaction mixture, and b. chemically reacting the formed liquid reaction mixture, and c. subjecting the formed liquid reaction mixture to microfluidisation, wherein the steps b. and c. are carried out simultaneously.
Type:
Grant
Filed:
May 23, 2017
Date of Patent:
November 1, 2022
Assignee:
SAPPI Netherlands Services B.V.
Inventors:
Rhodri Williams, Robert English, John Heaton
Abstract: A method of processing an aqueous hemicellulosic stream containing lignin, comprising: (a) contacting an aqueous hemicellulosic stream containing lignin with a C3-8 alkyl alcohol at elevated temperature and acidic pH; (b) separating the reaction mixture obtained from step (a) into an aqueous phase containing hemicellulose-derived monosaccharide and an organic phase containing C3-8 alkyl alcohol; (c) concentrating the organic phase obtained from step (b) to remove at least some C3-8 alkyl alcohol; (d) treating the residue from step (c) with water or an aqueous medium having an alkaline pH; and (e) recovering C3-8 alkyl alcohol from the product of step (d).
Type:
Grant
Filed:
February 23, 2018
Date of Patent:
October 18, 2022
Assignee:
SAPPI BIOTECH UK LIMITED
Inventors:
Edward Leslie Marshall, Alan Geoffrey Waite, David Peter Gibney
Abstract: Provided herein are methods of preparing new 14-membered ketolides via coupling of an eastern and western half moiety, followed by macrocyclization, and optional functionalization. Intermediates in the synthesis of these ketolides including the eastern and western halves are also provided. Pharmaceutical compositions and methods of treating infectious diseases and inflammatory conditions using these ketolides are also provided.
Type:
Grant
Filed:
April 8, 2020
Date of Patent:
October 11, 2022
Assignee:
President and Fellows of Harvard College
Inventors:
Andrew G. Myers, Ian Bass Seiple, Ziyang Zhang
Abstract: The present invention provides a novel method for producing carboxymethylated cellulose, the method making it possible to economically obtain a high-transparency cellulose nanofiber dispersion. In the carboxymethylation of cellulose, mercerization is carried out in a solvent comprising mainly water, and then carboxymethylation is carried out in a mixed solvent of water and an organic solvent. A nanofiber dispersion of high-transparency carboxymethylated cellulose can be obtained by defibrating the resulting carboxymethylated cellulose.
Type:
Grant
Filed:
December 5, 2018
Date of Patent:
October 11, 2022
Assignee:
NIPPON PAPER INDUSTRIES CO., LTD.
Inventors:
Kazuhiko Inoue, Takeshi Nakatani, Yusuke Tada
Abstract: Toll-like receptor (TLR) ligands having an allose-based core are stable in aqueous formulation and are useful in treating, preventing, or reducing susceptibility to diseases or conditions mediated by TLRs, such as cancer, infectious disease, allergy, autoimmune disease, sepsis, and ischemia reperfusion.
Type:
Grant
Filed:
February 12, 2019
Date of Patent:
October 4, 2022
Assignee:
INIMMUNE CORPORATION
Inventors:
Helene Bazin-Lee, George Ettenger, Juhienah Khalaf, Kendal T. Ryter
Abstract: Method for making a film that comprises microfibrillated cellulose, wherein the film has low OTR values and especially suitable for a tropical environment. The method comprising the steps of providing a suspension comprising microfibrillated cellulose (MFC), forming a film from said suspension, wherein the film having a solid content above 40%, preferably above 50%, treating the film with flame or plasma treatment, such that a surface activation takes place on the film, and cooling the film, wherein the surface of the film having a decreased OTR value and a high moisture resistance.
Type:
Grant
Filed:
November 16, 2017
Date of Patent:
October 4, 2022
Assignee:
Stora Enso OYJ
Inventors:
Isto Heiskanen, Kaj Backfolk, Esa Saukkonen, Ville Ribu, Katja Lyytikäinen
Abstract: The use of a polysaccharide derived from a bacterial strain in the prevention of ocular diseases and the treatment of ocular diseases. Especially, the ophthalmic use of a polysaccharide susceptible to be obtained from the CNCM I-5038 Cobetia marina bacterial strain in ocular conditions associated with ophthalmic dryness and ophthalmic inflammation.
Type:
Grant
Filed:
March 26, 2019
Date of Patent:
September 27, 2022
Assignee:
SANTEN SAS
Inventors:
Jennifer Dourlat, Philippe Daull, Jean-Sébastien Garrigue
Abstract: The present disclosure relates to polymers comprising conjugates of cyclodextrin or derivatives thereof and a linker moiety, methods of preparing the same and their application in the removal of lipids such as cholesterol from cells in treating lipid storage disorders. The present polymers exhibit improved properties including but not limiting to improved biocompatibility, improved retention time, prolonged duration of action in cells, and increased efficacy in removal of cholesterol from cells in treating lipid storage disorders.