Cellulose Or Derivative Patents (Class 536/56)
  • Patent number: 10273632
    Abstract: Objective of the method is a procedure for production of nanocellulose, where energy consumption and other costs of production are lower than in methods presented previously. It is based on separation of minute particles from cellulose or plant based ingredients by effects of light, thermal energy or water-soluble organic solvents. These particles act as precursors of nanocellulose. After separation they form in dry state aerosol, in liquid media a suspension, and combine to chains, microfibrils and secondarily formed fibrils, which form further networks with each other or with other fibers and fibrils. Applications are based on their action as reinforcing structure in composites, paper, cardboard, paints and other materials, on forming thin-layer films for electrical, electronic and medical applications, or on viscosity, surface and permeability properties.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: April 30, 2019
    Assignee: NANOREFIX OY
    Inventor: Yrjö Mälkki
  • Patent number: 10160934
    Abstract: The aim of the invention is to improve the cleaning power of washing and cleaning agents, especially with regard to bleachable stains, while avoiding any damage to the textile treated with said washing and cleaning agents. This is substantially achieved by using an electrolytically bleachable species generated by a redox reaction from an anionically substituted 1-hydroxy-2,2,6,6-tetramethylpiperidine, 2,2,6,6-tetramethylpiperidine-N-oxide, or (2,2,6,6-tetramethylpiperidine-1-yl)oxyl.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: December 25, 2018
    Assignee: Henkel AG & Co. KGaA
    Inventors: Iwona Spill, Mareile Job, Peter Schmiedel, Thomas Gerke, Guido Grundmeier, Markus Voigt
  • Patent number: 10113005
    Abstract: The present invention relates to a method for producing dewatered microfibrillated cellulose (MFC) comprising i) providing an aqueous MFC slurry, ii) optionally dewatering said MFC slurry by mechanical means to provide a partly dewatered MFC slurry, and iii) subjecting the MFC slurry or the partly dewatered MFC slurry to one or more drying operations by means of one or more absorbing materials to produce dewatered MFC. The produced MFC can be redispersed in water without deteriorating the material properties of the MFC.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: October 30, 2018
    Assignee: Kemira Oyj
    Inventors: Martin Häggblom, Veli-Matti Vuorenpalo
  • Patent number: 9914786
    Abstract: The invention relates to a dry or slurry process to prepare phosphate-crosslinked cellulose ethers from a cellulose starting material comprising the steps of adding an alkalizing agent to the cellulose starting material to achieve mercerization, adding an ethehfying agent to the reaction mixture to achieve etherification of the cellulose, and adding a crosslinking agent to the reaction mixture to achieve crosslinking of the cellulose, wherein at least part of the alkalizing agent is added to the cellulose starting material before the etherification and/or crosslinking reactions take place to obtain alkalized cellulose; the crosslinking agent and the etherifying agent are added one after the other in random order or simultaneously; the crosslinking agent is an alkali metal thmetaphosphate; and the crosslinking and etherification steps are performed at an elevated temperature.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: March 13, 2018
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventor: Paulus Pieter De Wit
  • Patent number: 9702062
    Abstract: A process for producing purified polysaccharide fiber of the present invention includes bringing a polysaccharide solution, which is obtained by dissolving a polysaccharide raw material in a liquid containing an ionic liquid, into contact with a solidification liquid containing an ionic liquid, and performing dry-wet spinning on polysaccharide, in which the concentration of the ionic liquid in the solidification liquid is 0.4% by weight to 70% by weight, and a distance D from a site where the polysaccharide solution is extruded in the form of fiber to a site where the extruded polysaccharide solution comes into contact with the solidification liquid is 50 mm to 120 mm.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: July 11, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kenichi Sugimoto, Mitsuharu Koide
  • Patent number: 9631177
    Abstract: The present invention relates material that is useful in drug delivery compositions. The material comprises cellulose nanofibers and/or derivatives thereof, wherein the cellulose nanofibers are in a form of a hydrogel or membrane. The invention also provides methods for producing these materials and compositions and uses thereof.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: April 25, 2017
    Assignee: UPM-KYMMENE CORPORATION
    Inventors: Marjo Yliperttula, Patrick Laurén, Madhushree Bhattacharya, Yanru Lou, Antti Laukkanen
  • Patent number: 9567707
    Abstract: A method of recovering purified partly-hydrolyzed cellulose (36) from a composition (14) comprising partly-hydrolyzed cellulose and an acid, such as sulfuric acid. A base (28) having a cation that forms a precipitate with the anion of the acid is added to the composition. For example, a base such as barium hydroxide is added to form a sulfate precipitate. The precipitate (38) is then separated from the partly-hydrolyzed cellulose (36), thus reducing its acid content. The method may include additional steps of centrifugation (18) of the composition, breaking-up agglomerations (44) in the composition after precipitation, and dialysis (42).
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: February 14, 2017
    Assignee: NORAM Engineering and Constructors Ltd.
    Inventor: James M. Lockhart
  • Patent number: 9481963
    Abstract: The present invention relates to a manufacturing method of a carboxymethyl cellulose nonwoven fabric which includes the carboxymethylation of cellulose fibers and the subsequent paper-making process to prepare a carboxymethyl cellulose nonwoven fabric. Comparing with the conventional method involving carboxymethylation of a nonwoven fabric, the method of the present invention has convenience and easiness of the process and thus enables production on a large scale. Further, the carboxymethyl cellulose nonwoven fabric manufactured by the present invention is susceptible to gelation upon contact with body fluids or water and thus useful as a medical nonwoven fabric or a mask pack.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: November 1, 2016
    Assignee: Korea Institute of Industrial Technology
    Inventors: Jung Nam Im, Song Jun Doh, Dae Young Lim, Ji Yun Lee
  • Patent number: 9469693
    Abstract: There is disclosed a process for the derivatization of cellulose comprising the sequential steps: a) mixing cellulose with a viscosity below 900 ml/g with an aqueous solution to obtain a liquid, wherein particles comprising cellulose in said liquid have a diameter of maximum 200 nm, wherein the temperature of the aqueous solution is below 20° C., and wherein the pH of the aqueous solution is above 12, b) subjecting the liquid to at least one of the steps: i) decreasing the pH of the liquid with at least 1 pH unit, ii) increasing the temperature by at least 20° C., and c) derivatization of the cellulose. Advantages include that there is provided the possibility to derivatize cellulose faster and to a greater extent after the treatment. Further the yield is improved. The product quality is improved and the manufacture is cheaper and easier.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: October 18, 2016
    Assignee: Re:Newcell Lux S.a.r.l.
    Inventors: Gunnar Henriksson, Mikael Lindstrom
  • Patent number: 9435585
    Abstract: A microwave dryer and a microwave drying method are provided to evaporate water by using the penetrability of microwave. A wind screen (14) arranged in a dryer body (6) is used as a heat storage body to store heat temporarily when the material in the dryer body (6) is heated. Hot air in the dryer body (6) is extracted by an air discharging system and redelivered to the dryer body (6) from the bottom of the dryer. The specific weight of the material after water is evaporated is reduced, so the dried material can be carried out of the dryer body (6) if enough wind power is provided.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: September 6, 2016
    Inventor: Kwok Fai Lam
  • Patent number: 9347176
    Abstract: The GreenBox+ technology is suitable to extract hemicellulose sugars prior to pulping of biomass into pulp products. The revenue obtainable from the sugar stream can significantly improve the economics of a pulp and paper mill. An initial extraction and recovery of sugars is followed by production of a pulp product with similar or better properties. Other co-products such as acetates and furfural are also possible. Some variations provide a process for co-producing pulp and hemicellulosic sugars from biomass, comprising: digesting the biomass in the presence of steam and/or hot water to extract hemicellulose into a liquid phase; washing the extracted solids, thereby generating a liquid wash filtrate and washed solids; separating the liquid wash filtrate from the washed solids; refining the washed solids at a refining pH of about 4 or higher, thereby generating pulp; and hydrolyzing the hemicellulose to generate hemicellulosic fermentable sugars.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: May 24, 2016
    Assignee: API Intellectual Property Holdings, LLC
    Inventors: Theodora Retsina, Vesa Pylkkanen, Steven R. Rutherford
  • Patent number: 9341622
    Abstract: An object of the present invention is to provide a hydrophilic cellulose derivative fine particle having a small particle size, a dispersion liquid thereof and a dispersion body thereof; and provide a diagnostic reagent composed of the hydrophilic particle, which is excellent in storage stability and does not require excess components, such as an emulsifier or surfactant. The cellulose derivative fine particle of the present invention is a cellulose derivative fine particle comprising a cellulose derivative with a part of hydroxyl groups of cellulose being substituted with a substituent, wherein the average particle diameter is from 9 to 1,000 nm; and the diagnostic reagent of the present invention is a diagnostic reagent obtained by loading a substance differentially interacting with a test object substance on the above-described cellulose derivative fine particle.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: May 17, 2016
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Yoshiyuki Shiomi, Toshihiko Matsui, Masanori Doi
  • Patent number: 9328963
    Abstract: Disclosed are methods and apparatuses for recovering and reusing energy when processing materials with reactive fluids. More particularly, disclosed are methods and apparatuses for recovering and reusing energy from processes in which materials comprising polymers and/or oligomers are treated with a reactive fluid.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: May 3, 2016
    Assignee: Renmatix, Inc.
    Inventors: Frederick John Moesler, Michel Adam Simard, Manuk Colakyan, Paul Anthony Neilson
  • Patent number: 9303127
    Abstract: The present invention is directed to a method to extract lignin from lignocellulosic biomass using lactic acid.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: April 5, 2016
    Assignee: Colorado School of Mines
    Inventors: John R. Dorgan, Michael Paul Eyser, Clayton Perbix
  • Patent number: 9296829
    Abstract: This invention provides a method for hydrophilic cellulose fibers capable of inhibiting decrease in the degree of polymerization and whiteness degree of oxidized cellulose fibers in oxidized cellulose in which a carbon at position 6 of each glucose unit in the cellulose fiber starting material is oxidized to a carboxyl group, the method comprising (A) the step of performing dehalogenation together with reduction, the dehalogenation comprising mixing a dehalogenation agent, a reducing agent, and oxidized cellulose fibers, and removing halogens remaining in the oxidized cellulose fibers, and the reduction comprising reducing a ketone group at position 2 and/or position 3 of each glucose unit in the oxidized cellulose fibers.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: March 29, 2016
    Assignee: GUNZE LIMITED
    Inventors: Akira Isogai, Chiaki Tanaka, Yoshinari Yui
  • Patent number: 9206414
    Abstract: Anisotropic nanocomposite hydrogel materials are created using a process in which a hydrogel-forming material is crosslinked in the presence of nanoscale cellulose and subsequently thermally cycled under an applied tensile strain. Such materials are capable of exhibiting high mechanical and viscoelastic anisotropy, increased stiffness when subjected to large strain, and are suitable for a broad range of soft tissue replacement applications. In addition controlled release of bioactive agents properties can be designed into medical devices fabricated from such nanocomposite materials.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: December 8, 2015
    Assignee: AXCELON BIOPOLYMERS CORPORATION
    Inventors: Wan-Kei Wan, Leonardo Millon
  • Patent number: 9175096
    Abstract: This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: November 3, 2015
    Assignee: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Norma Lindsey Buchanan, Michael Eugene Donelson, Maryna Grigorievna Gorbunova, Thauming Kuo, Bin Wang
  • Patent number: 9163355
    Abstract: A composite structure mainly composed of hydratable fine fibers in the form of microfibril and a water swellable solid body, the fibers being obtained from cellulose or derivatives thereof, and at least part of the surface of the solid body is covered with the fine fibers. The absorbent composite can be formed in various form of, for example, particle, pellet, sheet and the like, especially of a sheet type with a supporting sheet of a non-woven fabric. The present invention further provides a method of making the composite structure.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: October 20, 2015
    Assignee: DSG International Limited
    Inventors: Migaku Suzuki, Ryoichi Matsumoto, Shingo Mori
  • Patent number: 9107978
    Abstract: The present invention relates to an implant comprising: a sheet of bacterial cellulose having a macro-pattern positioned on at least a portion thereof. The invention also relates to a method for making such an implant.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: August 18, 2015
    Assignee: Sofradim Production
    Inventors: Yves Bayon, Sébastien Ladet, Olivier Lefranc, Philippe Gravagna
  • Patent number: 9095733
    Abstract: Provided herein are microalgal skin care compositions and methods of improving the health and appearance of skin. Also provided are methods of using polysaccharides for applications such as topical personal care products, cosmetics, and wrinkle reduction compositions. The invention also provides novel decolorized microalgal compositions useful for improving the health and appearance of skin. The invention also includes insoluble polysaccharide particles for application to human skin.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: August 4, 2015
    Assignee: Solazyme, Inc.
    Inventors: Jeff Avila, Geoffrey Brooks, Anthony G. Day, Aravind Somanchi
  • Publication number: 20150147311
    Abstract: A process for mechanical destructuring of cellulosic biomass was developed that makes use of a short application of high compression, impact, and shearing forces. The biomass may be destructured using a specific energy input that is less than 40% of the total combustible energy of the biomass. The destructured biomass, with or without saccharification and/or in-feed glycosyl hydrolase enzymes, may be used in feed applications.
    Type: Application
    Filed: November 18, 2014
    Publication date: May 28, 2015
    Inventors: Wathudura Indika Namal De Silva, Paul Joseph Fagan, F. Glenn Gallagher, Zheng-Zheng Huang, Guangliang Gary Liu, Aaron Perelman, Luis Fernando Romero Millan, Anton Shpilsky, Daniel A. Slanac, Maria Walsh
  • Publication number: 20150144563
    Abstract: Articles containing soil adsorbing polymers, and more particularly, articles, for example nonwovens, such as paper towels, wovens, and/or sponges and/or article-forming components thereof that comprise a durably bonded soil adsorbing polymer, article-forming components used to make such articles, and processes for making same are provided.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 28, 2015
    Inventors: Robin Lynn McKIERNAN, Robert Joseph McCHAIN, Steven Daryl SMITH
  • Publication number: 20150147558
    Abstract: The present invention relates to a method of obtaining a solid material based on a polymer having its cellobiose units exhibiting the following characteristics: at least some of the cellobiose units have at least one carboxylic acid function attached to the C6 carbon, the other C6 carbons having a primary alcohol function attached thereto; and at least some of the cellobiose units have at least one of the two rings open between the C2 and C3 carbons, the other C2 and C3 carbons forming a ring and having an alcohol function attached thereto. Such a material, advantageously a textile, may be used as a compress.
    Type: Application
    Filed: June 3, 2013
    Publication date: May 28, 2015
    Applicant: SYMATESE
    Inventors: Vithuy Dao, Robert Michelot, Benjamin Herbage, Fabien Fuchez, Eric Perouse
  • Publication number: 20150148458
    Abstract: The present invention provides a production method for purified polysaccharide fibers in which carbon disulfide emission is suppressed while efficiently producing purified polysaccharide fibers having excellent strength, purified polysaccharide fibers produced by using the production method, a fiber-rubber complex using the purified polysaccharide fibers, and a tire having excellent tire characteristics using the fiber-rubber complex. The production method for purified polysaccharide fibers of the present invention is a production method for purified polysaccharide fibers of wet-spinning or dry-wet-spinning polysaccharide by bringing a polysaccharide solution obtained by dissolving a polysaccharide raw material in a liquid including an ionic liquid into contact with a solidification liquid including an ionic liquid, in which a concentration of the ionic liquid in the solidification liquid is 0.
    Type: Application
    Filed: May 21, 2013
    Publication date: May 28, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Mitsuharu Koide, Kenichi Sugimoto
  • Publication number: 20150141531
    Abstract: The instant disclosure relates to a process for manufacturing a fibrillated cellulose powder suitable for being dispersed in an aqueous medium, comprising a step of adding a monovalent salt to a fibrillated cellulose suspension, followed by a lyophilisation step.
    Type: Application
    Filed: June 24, 2013
    Publication date: May 21, 2015
    Inventors: Julien Bras, Naceur Belgacem, Karim Missoum
  • Publication number: 20150126728
    Abstract: A surfactant treated bleached softwood kraft pulp fiber, useful as a starting material In the production of cellulose derivatives including cellulose ether, cellulose esters and viscose, is disclosed. Methods for making the kraft pulp fiber and products made from it are also described.
    Type: Application
    Filed: April 5, 2013
    Publication date: May 7, 2015
    Inventors: Arthur James Nonni, Charles Edward Courchene, Christopher Michael Slone, Philip Reed Campbell, Steven Chad Dowdle, Joel Mark Engle
  • Publication number: 20150114907
    Abstract: Highly porous, lightweight, and sustainable organosilane-coated organic aerogels with ultra-low densities and excellent material properties and methods for preparing them are provided. The aerogels are modified to have a superhydrophobic and superoleophilic surface, thus leading to an extremely high affinity for oils and/or organic solvents.
    Type: Application
    Filed: October 24, 2014
    Publication date: April 30, 2015
    Inventors: Shaoqin GONG, Zhiyong Cai, Qifeng Zheng
  • Publication number: 20150110900
    Abstract: This cellulose powder has: an average degree of polymerization of 100 to 350; a weight average particle size of over 30 gm, but less than 250 ?m; an apparent specific volume of 2 to less than 15 cm3/g; and an organic carbon content from residual impurities, which is defined by the total organic carbon content (%) during 1% NaOH extraction to the total organic carbon content (%) during pure water extraction, of over 0.07 to 0.3%.
    Type: Application
    Filed: May 30, 2013
    Publication date: April 23, 2015
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita
  • Patent number: 9012188
    Abstract: The present invention relates to producing chemicals and biofuels from wood material, e.g. mixed forest biomass. Specifically, the invention concerns a process for conditioning spent liquor produced by SO2-ethanol-water (SEW) fractionation of wood chips for fermentation to butanol, ethanol and acetone/isopropanol (so called ABE process) by Clostridia bacteria.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: April 21, 2015
    Assignee: API Intellectual Property Holdings, LLC
    Inventors: Adriaan Van Heiningen, Evangelos Sklavounos
  • Patent number: 8992728
    Abstract: The cellulose nanofiber production method of the present invention comprises an oxidation treatment step for oxidizing native cellulose in a neutral or acidic reaction solution containing an N-oxyl compound and an oxidizing agent that oxidizes aldehyde groups, and a dispersion step for dispersing the native cellulose in a medium following the oxidation treatment step. According to the production method of the present invention, a cellulose nanofiber is provided that has long fibers and demonstrates high strength.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: March 31, 2015
    Assignee: The University of Tokyo
    Inventors: Akira Isogai, Tsuguyuki Saito
  • Patent number: 8993747
    Abstract: The present invention relates to a process for the production of alkali cellulose for the production of alkali cellulose and, optionally, cellulose ethers from cellulose in the presence of alkali and, if applicable, with alkylating and/or hydroxyalkylating agent(s) comprising the reaction of a cellulose with an alkali metal hydroxide, wherein the alkali metal hydroxide is mixed with cellulose in a mixing apparatus, the mixing apparatus (1) having an upper region (20, 102a, 202a) with a first cross-section and a lower region (21, 102b, 202b) with a second cross-section, the second cross-section being the same as or smaller than the first cross-section and comprising at least one non-horizontally oriented mixing device (23, 27, 121, 221, 224).
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: March 31, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Matthias Sprehe, Bettina Hoelzer
  • Patent number: 8986728
    Abstract: The present invention provides an implantable device having a biosoluble coating or a biosoluble body structure comprising a polyelectrolyte and a counterion and the methods of making and using the same.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: March 24, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Syed F. A. Hossainy, Mikael O. Trollsas, Lothar W. Kleiner
  • Publication number: 20150079866
    Abstract: A method of producing a fine fiber, including treating a cellulose raw material with an enzyme; and fibrillating the treated cellulose raw material; treating with the enzyme under a condition where at least a ratio of endo-glucanase activity to cellobiohydrolase activity that is 0.06 or greater. The cellulose raw material may be a plant fiber. The method efficiently produces a fine fiber from a cellulose raw material at low cost and with a low environmental burden, a fine fiber, and a non-woven fabric.
    Type: Application
    Filed: May 16, 2013
    Publication date: March 19, 2015
    Applicant: Oji Holdings Corporation
    Inventors: Yaping Chao, Yasutomo Noishiki
  • Patent number: 8981080
    Abstract: A process for producing a silane-modified cationized polymeric compound, the process including the steps of: (1) cationizing a water-soluble polymeric compound in a mixed solvent of a water-miscible organic solvent and water in the presence of an alkali to produce a slurry containing a cationized polymeric compound, (2) adding an aminosilane compound to the slurry or a cake produced therefrom, thereby treating the cationized polymeric compound with the aminosilane compound, (3) optionally adding an acid to the slurry obtained in step (1) or a product obtained in step (2), and (4) drying a product obtained in step (2) or a product obtained by performing step (3) after step (2), wherein the drying step (4) includes a primary drying treatment step of performing drying at a temperature of 50 to 140° C. under a degree of vacuum of 4.0 to 53.3 kPa, and a secondary drying treatment step of drying the product obtained following the primary drying treatment at a temperature of 90 to 155° C.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: March 17, 2015
    Assignee: LION Corporation
    Inventors: Takeshi Yamada, Youichirou Kohno, Yoko Osako, Yoshifumi Yamagata
  • Publication number: 20150072396
    Abstract: Low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations for modifying biomolecules is provided. Compositions, methods, and kits relating to low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations are also provided.
    Type: Application
    Filed: March 1, 2012
    Publication date: March 12, 2015
    Applicant: LIFE TECHNOLOGIES CORPORATION
    Inventors: Kyle Gee, Upinder Singh, Scott Grecian, Scott Clarke
  • Patent number: 8974634
    Abstract: The present invention provides a novel production method of a cellulose nanofiber and a novel cellulose nanofiber. The method for producing a cellulose nanofiber comprises defibrating pulp by a single- or multi-screw kneader in the presence of water, the single or multi-screw kneader having a screw circumferential speed of 45 m/min. Or more.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: March 10, 2015
    Assignees: Nippon Paper Industries Co., Ltd., Oji Holdings Corporation, Mitsubishi Chemical Corporation, Kyoto University
    Inventors: Hiroyuki Yano, Tadafumi Hashimoto, Akihiro Sato
  • Publication number: 20150065698
    Abstract: There is described a method of isolating one or more of pectin, d-limonene, a flavour compound, a flavonoid, a soluble monosaccharide, a decomposition product of a monosaccharide and cellulose, from citrus material wherein said method comprises the microwave assisted hydrothermal low temperature treatment of citrus material.
    Type: Application
    Filed: April 4, 2013
    Publication date: March 5, 2015
    Inventors: James Hanley Clark, Lucie Anne Pfaltzgraff, Vitaliy Lvovich Budarin, Mario De Bruyn
  • Publication number: 20150064331
    Abstract: A method and a system for preparing xylan and calcium carbonate, xylan, a cellulose fibre, and precipitated calcium carbonate. The method includes extracting xylan from cellulose fibres with sodium hydroxide to form a mixture containing cellulose fibres and an extract solution containing xylan; removing the cellulose fibres from the mixture to isolate the extract solution; adding carbon dioxide to the isolated extract solution to form a mixture containing a liquid brightener and precipitated xylan; separating the brightener from the mixture to isolate the precipitated xylan; adding calcium hydroxide to the separated brightener to form a mixture of precipitated calcium carbonate and liquid sodium hydroxide; and removing the sodium hydroxide from the mixture to isolate the calcium carbonate.
    Type: Application
    Filed: March 26, 2013
    Publication date: March 5, 2015
    Inventors: Björn Krogerus, Agneta Fuhrmann, Christiane Laine
  • Publication number: 20150064491
    Abstract: A paint composition includes microfibrillated cellulose, binder, and solvent. The microfibrillated cellulose may be present in an amount ranging from about 0.1% to about 10% by weight based on the total weight of the paint composition.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 5, 2015
    Applicant: IMERYS S.A.
    Inventors: Jonathan Phipps, Sophie Bourgoin, Annabelle Huguette Renee Legrix, Gemma Vinnicombe
  • Publication number: 20150057442
    Abstract: In a method for manufacturing fibril cellulose, cellulose based fibre raw material is processed mechanically in a refining gap for separating fibrils. The fibres to be refined are subjected to the action of a surface roughness Ra provided by grits elevated from a refining surface delimiting the refining gap, said surface roughness being lower than 3 ?m, advantageously lower than 2 ?m. The refining surface is formed by spraying grits and binder onto a substrate.
    Type: Application
    Filed: June 20, 2012
    Publication date: February 26, 2015
    Applicant: UPM-KYMMENE CORPORATION
    Inventors: Tomas Björkqvist, Sirkka Gustafsson, Timo Koskinen, Markus Nuopponen, Annikki Vahniäinen, Antti Fredrikson
  • Patent number: 8962821
    Abstract: The present invention relates to a non-toxic process and system for pilot-scale production of cellulose products, and particularly to a process and system for pilot-scale production of cellulose products by using aqueous sodium hydroxide/urea solution pre-colled to lower than ?8° C., in which cellulose could dissolved rapidly. The said process and system can be used to produce fibers, films, chromatographic packings, or nonwovens of regenerated cellulose, as well as to produce a variety of high added-value products by adding other materials such as functional materials, nano-materials, etc.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: February 24, 2015
    Assignees: Jiangsu Long-Ma Green Fibers Co., Ltd., Wuhan University
    Inventors: Lina Zhang, Jie Cai, Jinping Zhou, Chuntao Li, Haisong Qi, Yuan Mao
  • Publication number: 20150038688
    Abstract: A method of decomposing an organic substrate includes identifying an organic substrate or its constituents having one or more desired or undesired properties; and contacting the organic substrate with an oxidizing agent and a catalyst selected from the group consisting of sterically hindered and electronically activated metallotetraphenylporphyrins, metallophthalocyanines and metallosalen complexes in an aqueous or aqueous-organic solution to produce a treated composition comprising one or more degradation products, wherein the degradation products have one or more desired properties and/or lack the undesired properties of the organic substrate.
    Type: Application
    Filed: August 15, 2014
    Publication date: February 5, 2015
    Inventor: Mukund CHORGHADE
  • Publication number: 20150025229
    Abstract: The present invention provides a process and System for Separation of biomass components into individual components such as cellulose, hemicellulose and lignin. The present invention provides a process for separating lignin in its native form. The cellulose obtained by the process of the present invention is highly reactive for saccharification.
    Type: Application
    Filed: February 18, 2014
    Publication date: January 22, 2015
    Applicant: NAGARJUNA ENERGY PRIVATE LIMITED
    Inventors: Dinakaran Samuel SUDHAKARAN, Suresh Chandra SRIVASTAVA, Manoj Kumar SARKAR, Banibrata PANDEY, Sakthi Priya PECHIMUTHU
  • Publication number: 20150010989
    Abstract: Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful products, such as fuels. For example, systems are described that can use feedstock materials, such as cellulosic and/or lignocellulosic materials and/or starchy materials, to produce ethanol and/or butanol, e.g., by fermentation.
    Type: Application
    Filed: September 25, 2014
    Publication date: January 8, 2015
    Inventors: Marshall Medoff, Thomas Craig Masterman
  • Publication number: 20150007953
    Abstract: A process comprising treating a lignocellulosic material preferably pulp in the presence of a transition metal catalyst with a oxidizing agent selected from a group consisting of hydrogen peroxide, hypochlorite, hypochlorous acid and any combination thereof to form a treated lignocellulosic material having a viscosity equal to or less than about 17 cp and having reducing functional groups selected from the group consisting of aldehyde and aldehyde type functional groups at the C6 and C1 positions but predominating at the C1 position.
    Type: Application
    Filed: June 17, 2014
    Publication date: January 8, 2015
    Inventors: ZHENG TAN, DAMARIS LORENZONI, GOPAL GOYAL, SEN YANG
  • Publication number: 20150011712
    Abstract: The present invention relates to diaminophenothiazinium derivatives of formula (I); in which R1, R2, R3, R4, R5, R6 and X? are as defined in Claim 1, and also the methods for labelling oligonucleotides using such a derivative, labeling substrates and the oligonucleotides which can be obtained by means of such methods or from such labelling substrates.
    Type: Application
    Filed: February 21, 2013
    Publication date: January 8, 2015
    Inventors: Carole Chaix, Gabriel De Crozals
  • Publication number: 20150011685
    Abstract: A polyester resin composition containing a polyester resin, and a fine cellulose fiber composite having an average fiber diameter of from 0.1 to 200 nm, wherein the fine cellulose fiber composite contains fine cellulose fibers and hydrocarbon groups being connected thereto via an amide bond. The polyester resin composition of the present invention can be worked into a molded article by thermoforming or injection-molding, and is suitably used for various industrial applications, such as daily sundries, household electric appliance parts, packaging materials for household electric appliance parts, and automobile parts. In addition, the fine cellulose fiber composite has high dispersibility against various resins and can exhibit thickening effects, so that it is suitable as various thickeners or the like.
    Type: Application
    Filed: December 20, 2012
    Publication date: January 8, 2015
    Applicant: KAO CORPORATION
    Inventors: Masahiro Mori, Motoi Konishi, Akiyoshi Kimura, Masahiro Fujioka, Kenta Mukai, Yoshiaki Kumamoto
  • Publication number: 20150008371
    Abstract: The present invention relates to a corrosion inhibitor comprising cellulose nanocrystals. According to another aspect, there is provided a corrosion-inhibiting agent essentially consisting of a plurality of cellulose nanocrystals. The above set out cellulose nanocrystals may be in free form, such as acid-form cellulose nanocrystals, in one embodiment and added to a carrier. The cellulose nanocrystals may be effective in inhibiting ferrous and non-ferrous metals. According to a further aspect, the invention relates to a corrosion-inhibiting composition comprising a corrosion inhibitor and the above set out corrosion-inhibiting agent in an effective combination to inhibit corrosion of metals. The composition may be effective in inhibiting ferrous metals when the cellulose nanocrystals are in either salt or free form. The composition may be effective in inhibiting corrosion of both ferrous and non-ferrous metals when the cellulose nanocrystals are in free form.
    Type: Application
    Filed: January 8, 2014
    Publication date: January 8, 2015
    Applicant: NanoBloc Technology Inc.
    Inventor: Andrew Garner
  • Patent number: 8920554
    Abstract: The present disclosure is directed to methods for producing a very low viscosity cellulose ether having little or no discoloration and cellulose ether products resulting therefrom. The method includes contacting a cellulose ether with an oxidizing agent and an acid to form a mixture. The mixture is then heated and neutralized. The method includes adding a second oxidizing agent to the mixture and forming a very low viscosity cellulose ether having a viscosity from 1.2 cP to less than 2 cP. The very low viscosity ether may also have an APHA color value of 1 to 100.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: December 30, 2014
    Assignee: Dow Global Technologies LLC
    Inventor: Charles B. Mallon
  • Publication number: 20140378676
    Abstract: Disclosed is the use of a separation agent including fibril cellulose for phase separation, as well as to a method for the separation of at least one liquid phase from at least one phase selected from a second liquid phase, solid phase and semi-solid phase, where the method includes the steps of incorporating a separation agent including fibril cellulose to a mixture where separation of the phases is desired, followed by formation of phases and removing the phases.
    Type: Application
    Filed: December 18, 2012
    Publication date: December 25, 2014
    Applicant: UPM-KYMMENE CORPORATION
    Inventors: Marko Lauraeus, Antti Laukkanen