Acids, Salts Or Esters Patents (Class 162/76)
  • Patent number: 10543517
    Abstract: A particle for treatment and repair of soil contamination is mainly composed of potassium ferrate and an inorganic cementitious material. The inorganic cementitious material is a powdery air-hardening or hydraulicity inorganic cementitious material. The potassium ferrate and the inorganic cementitious material are mixed according to the mass fraction of 1:5-50. After mixing is carried out, the particle with the particle diameter ranging from 2 mm to 5 mm is formed by means of vibration of a vibration screen, the particle is wrapped by a water-soluble film, and the water-soluble film is heated to be shrunk and then is closely attached to the outer surface of the particle. Also disclosed is a method for repairing soil by using the particle. When the particle is mixed with an ozone water solution is adopted.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: January 28, 2020
    Assignee: QIUXIANG NEW ECOLOGICAL AGRICULTURAL TECHNOLOGY (JIANGSU) CO., LTD.
    Inventors: Liwei Hou, Yufang Wei
  • Patent number: 9771435
    Abstract: The present invention is directed to a process for producing spinnable cellulose at least in part from citrus fruits, such as oranges and lemons. In a preferred embodiment, cellulose is extracted from citrus fruits, discarded by the citrus fruits plantations and/or from parts of citrus fruits, waste of the industrial processing of citrus fruits derivatives. Cellulose is extracted from the entire peel of citrus fruits, which includes both albedo and flavedo, or only from albedo. Preferably, cellulose is obtained by chemical extraction, preferably in the absence of chlorine, comprising the treatment of raw materials derived from citrus fruits with hydrogen peroxide under basic conditions. Cellulose obtained by the process of the present invention is optionally mixed with cellulose obtained by different processes, for example with cellulose extracted from wood.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: September 26, 2017
    Assignee: ORANGE FIBER S.R.L.
    Inventor: Adriana Maria Santanocito
  • Patent number: 9725583
    Abstract: A method for preparing stably dispersed cellulose nanofibers comprises the following steps: 1) mixing cellulose and an organic solvent, the percentage of the cellulose being 1% to 15% in weight; 2) adding an esterification agent into the resultant mixture of step 1), the molar ratio of the esterification agent to the cellulose being from 1:0.1 to 4; and 3) physically breaking the resultant mixture of step 2) until a suspension liquid with stably dispersed cellulose nanofibers of 2-1000 nm in diameter and 10-100 ?m in length is obtained, an esterification reaction of hydroxyl group(s) on the surface of cellulose fibers occurring at the time of the breaking. Also disclosed are dispersed cellulose nanofibers with improved compatibility to the matrix than the untreated cellulose and an improved strength of the composite materials.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: August 8, 2017
    Assignee: Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences
    Inventors: Min Wu, Yong Huang, Shigenori Kuga, Pei Huang
  • Patent number: 9702082
    Abstract: Embodiments of the present disclosure generally relate to materials and methods for producing a wide range of raw materials from plant biomass. In certain embodiments, the present disclosure provides materials and methods for efficient decortication of plant biomass using a thermally regulated process to generate reactive oxygen species in the presence of a catalyst. Embodiments of the present disclosure address the need for improved methods with which to obtain a wide range of raw materials from plant biomass without the need for industrial decortication machines and without producing harmful industrial waste.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: July 11, 2017
    Assignee: 9FIBER, INC.
    Inventor: Adam Powars
  • Patent number: 9487914
    Abstract: Embodiments of the present disclosure generally relate to materials and methods for producing a wide range of raw materials from plant biomass. In certain embodiments, the present disclosure provides materials and methods for efficient decortication of plant biomass using a thermally regulated process to generate reactive oxygen species in the presence of a catalyst. Embodiments of the present disclosure address the need for improved methods with which to obtain a wide range of raw materials from plant biomass without the need for industrial decortication machines and without producing harmful industrial waste.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: November 8, 2016
    Assignee: 9F, Inc.
    Inventor: Adam Powars
  • Patent number: 9267240
    Abstract: A cellulosic tissue includes cellulosic fibers selected from the group consisting of chemically pulped fibers and mechanically pulped fibers, the cellulosic fibers have from about 10% to about 50% by weight eucalyptus fibers having a lignin content of at least about 20% by weight, and from about 3% to about 10% by weight regenerated cellulosic microfibers.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: February 23, 2016
    Assignee: Georgia-Pacific Products LP
    Inventors: Jeffrey A. Lee, Daniel A. Sumnicht
  • Publication number: 20150107790
    Abstract: A method of separating hemicellulose and cellulose by dissolution of hemicellulose from a hemicellulose-rich source, such as a pulp of any origin or from holocellulose. In the method, hemicellulose is dissolved in a solvent system comprising a cellulose solvent, which is either a ionic liquid or another direct cellulose solvent, and a molecular solvent (co-solvent), wherein said co-solvent does not dissolve cellulose, and wherein the solvent basicity and acidity of said ionic liquid or other direct cellulose solvent are adequately adjusted by the co-solvent. The present invention enables quantitative separation of cellulose and hemicellulose without any depolymerization and yield losses as occurring during conventional dissolving pulp manufacturing processes.
    Type: Application
    Filed: April 15, 2013
    Publication date: April 23, 2015
    Applicant: METSA FIBRE OY
    Inventors: Herbert Sixta, Michael Hummel, Mikhail Iakovlev, Lasse Tolonen
  • Publication number: 20150041084
    Abstract: A process for treating a cellulosic material comprising extracting hemicellulose from the cellulosic material with an extractant comprising a cellulose solvent and a co-solvent to selectively extract hemicellulose therefrom and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises a cellulose solvent and a co-solvent. The cellulose solvent is selected from the group consisting of an ionic liquid, an amine oxide and combinations thereof, and the co-solvent may preferably have a boiling point less than 120° C., or less than 100° C. The cellulosic product advantageously retains its cellulosic fiber morphology. The processes involve separating and recovering the hemicellulose and separating and recycling various process streams employed in the process.
    Type: Application
    Filed: August 6, 2014
    Publication date: February 12, 2015
    Inventors: Tianshu Pan, Dinesh Arora, Monica Boatwright, Michael T. Combs, Denis G. Fallon, Bin Li, Rongfu Li, Jennifer Maddrey, Jay Mehta
  • Patent number: 8926712
    Abstract: A solvent spun bamboo fiber with a high wet modulus and a producing method thereof are disclosed. The producing method includes: activating by adding a bamboo pulp into de-ionized water, adjusting the pH value, adding cellulase and adjusting the pH value by adding alkali; squeezing by vacuum dehydration; pre-dissolving by adding an aqueous solution containing 50-88% by mass of N-methylmorpholine-N-oxide; then dissolving by putting the above pre-dissolved mixture into a dissolver, heating, vacuumizing, dehydrating, dissolving, homogenizing and defoaming; spinning by spraying through a spinneret and forming a bamboo fiber by dry-wet spinning; water washing; bleaching; oiling; and drying. The present method is simple to operate, free of industrial pollution, low energy consuming, and highly safe. The bamboo fiber produced by the present method not only keeps the natural physical and chemical properties of bamboo fiber, but also has a high wet modulus without harmful chemical residues.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: January 6, 2015
    Assignee: Shanghai Lyocell Fibre Development Co., Ltd.
    Inventors: Kun Jiang, Xiaoliang Wang, Changli Zhu, Xin Wang, Dianhai Zheng
  • Patent number: 8906199
    Abstract: A process for the bleaching of wood pulp using one or more peroxide oxidising agents wherein the process includes treatment of the pulp with a mixture of chelating agents comprising: (a) a first chelating agent selected from the group consisting of: ethylenediamine N,N-disuccinic acid, methylglycinediacetic acid, glutamic acid N,N-diacetic acid, imino disuccinic acid and anions and mixtures thereof; and (b) a second chelating agent selected from the group consisting of: diethylene triamine pentaacetic acid, ethylenediamine tetraacetic acid, diethylenetriamine penta methylene phosphonic acid and anions and mixtures thereof.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: December 9, 2014
    Assignee: Innospec Limited
    Inventors: Matthew Robert Giles, Nicholas John Dixon
  • Patent number: 8900406
    Abstract: A procedure for obtaining nanofibrillated cellulose starting from a raw material including recycled or recovered paper, or recovered paper pulp or recovered cellulose comprises the stages of: immersing the raw material in an acetic acid dilution, in a concentration of 10% to 50% by volume, during a time inverse to the concentration of acetic acid; stirring the raw material immersed in the acetic acid dilution; and subsequently subjecting the cellulosic material to a mechanical process of longitudinal separation of fibers, by shear forces applied through a mixer or similar equipment capable of creating enough shearing on cellulose pulp. Thanks to the above procedure nanofibrillated cellulose from recycled paper is obtained with similar features to the nanofibrillated cellulose obtained from virgin cellulose.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: December 2, 2014
    Assignee: Saica Pack, S.L.
    Inventors: Pablo Gonzalez Miguel, Ana Cristina Crespo Miñana, Gemma Ibarz Ric, Susana Gonzalez Alonso, Azucena Gonzalez Alvarez, Alberto Mena Diaz de Corcuera
  • Publication number: 20140326422
    Abstract: A process for converting a starting material to a purified pulp material, comprising removing lignin from a starting material to form a wet pulp comprising at least 5 wt. % water, extracting hemicellulose from the wet pulp with an extractant, and separating the extracted hemicellulose from the extraction mixture to form a cellulosic product comprising less hemicellulose than the wet pulp. The extractant comprises a cellulose solvent and a co-solvent. The cellulosic product advantageously retains its cellulosic fiber morphology. The process involves separating and recovering hemicellulose and separating and recycling various process streams employed in the process.
    Type: Application
    Filed: May 2, 2014
    Publication date: November 6, 2014
    Applicant: Celanese International Corporation
    Inventors: Denis G. Fallon, Bin Li, Rongfu Li, Jay Mehta, Tianshu Pan, Jaimes Sher, Leslie Allen, Dinesh Arora, Monica Boatwright, Christopher M. Bundren, Michael T. Combs
  • Patent number: 8871051
    Abstract: A mild inexpensive process for treating lignocellulosic biomass involves oxidative delignification of wood using an aqueous solution prepared by dissolving a catalytic amount of manganese (III) acetate into water and adding hydrogen peroxide. Within 4 days and without agitation, the solution was used to convert poplar wood sections into a fine powder-like delignified, cellulose rich materials that included individual wood cells.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: October 28, 2014
    Assignee: Los Alamos National Security, LLC
    Inventors: Kirk Davin Rector, Marcel Lucas, Gregory Lawrence Wagner, David Bryan Kimball, Susan Kloek Hanson
  • Publication number: 20140311693
    Abstract: Disclosed is a modified refiner system for the acetylation of wood chip and/or wood fibre. The invention comprises a process for the acetylation of wood chip in a refiner system including a feed hopper component, a non-steam digester component and a refiner (defibrator) component in which the chip is contacted with an acetylating fluid between the hopper and the digester components within a connecting multi-zone compression feed screw.
    Type: Application
    Filed: June 8, 2012
    Publication date: October 23, 2014
    Applicant: Titan Wood Limited
    Inventor: Benjamin Painter
  • Publication number: 20140231034
    Abstract: A method for producing mechanical paper pulp comprises: impregnating unprocessed wood, whereby unprocessed wood is exposed to an impregnating composition comprising at least a laccase enzyme and a formula mediator (I), wherein R1 and R2 are identical or different groups, chosen from among a hydrogen atom, a hydrocarbon chain, linear or branched, saturated or unsaturated, comprising 1 to 14 carbon atoms, wherein each hydrocarbon chain can be replaced by one or more functional groups chosen from among —OH, —SO3, benzyl, amino, mercapto, keto or carboxyl, wherein R1 and R2 in combination can form a cyclical structure, to achieve impregnation of the wood; and mechanically refining the impregnated wood, such that a mechanical paper pulp is obtained. The disclosure also relates to an impregnating composition used in this method and to the use thereof in a method for producing mechanical paper pulp, as well as to a method for producing paper.
    Type: Application
    Filed: September 6, 2012
    Publication date: August 21, 2014
    Applicant: ARKEMA FRANCE
    Inventors: Jérôme Blanc, Christophe Calais, Valérie Meyer, Michel Petit-Conil
  • Publication number: 20140203212
    Abstract: The present invention relates to a composition comprising a fluorescent whitening agent and a tertiary alkanolamine, a stable aqueous solution of such a composition and use of such composition for the bleaching of textile fibres or paper.
    Type: Application
    Filed: July 27, 2012
    Publication date: July 24, 2014
    Applicant: 3V Sigma S.p.A
    Inventors: Ferruccio Berte', Paolo Alioli, Marco Brena
  • Publication number: 20140202646
    Abstract: Compositions for and methods of stabilizing bleaching and making paper or paperboard having suitable brightness are provided. A stabilizer composition is provided containing aminocarboxylate, hydroxy acid, and either polyamino acid or iminodisuccinate, or both. The stabilizer composition can have low levels or be free of magnesium, phosphates, and silicates. The present invention also relates to a method of stabilizing the bleaching of pulp at an alkaline pH.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 24, 2014
    Applicant: Buckman Laboratories International, Inc.
    Inventors: Donald G. Jenkins, Amy E. Carter
  • Publication number: 20140113966
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 24, 2014
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: ROBERT DICOSIMO, MARK SCOTT PAYNE, JOHN EDWARD GAVAGAN
  • Publication number: 20140102649
    Abstract: Process for the production of paper, board and cardboard having high dry strength by addition of an aqueous composition comprising a nanocellulose and at least one polymer selected from the group consisting of the anionic polymers and water-soluble cationic polymers, draining of the paper stock and drying of the paper products.
    Type: Application
    Filed: December 13, 2013
    Publication date: April 17, 2014
    Applicant: BASF SE
    Inventor: Anton ESSER
  • Publication number: 20140073016
    Abstract: The present invention relates to a method for treating a lignocellulose biomass in order to dissolve the lignin therein, while the cellulose does not dissolve. The cellulose pulp obtained can be used to produce glucose. In addition the lignin can be isolated for subsequent use in the renewable chemical industry as a source for aromatic platform chemicals.
    Type: Application
    Filed: December 15, 2011
    Publication date: March 13, 2014
    Applicant: IMPERIAL INNOVATIONS LTD.
    Inventors: Agnieszka Brandt, Richard J. Murphy, David J. Leak, Tom Welton, Jason Hallett
  • Publication number: 20140048223
    Abstract: A method for treating a cellulosic material comprising extracting the cellulosic material with an extractant to selectively extract hemicellulose therein and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises an amine oxide and a non-solvent. The cellulosic product retains the cellulosic fiber morphology.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 20, 2014
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Rongfu Li, Jay Mehta, Xiaoyan Tu, Prabuddha Bansal, Michael Combs, Denis Fallon, Lawton E Kizer
  • Publication number: 20140048221
    Abstract: A method for treating a cellulosic material comprises extracting the cellulosic material with an extractant to selectively extract hemicellulose therein and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulose-containing material. The extractant comprises an ionic liquid and a non-solvent comprising acetic acid. The cellulosic product retains the cellulosic fiber morphology.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 20, 2014
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Rongfu Li, Jay Mehta, Xiaoyan Tu, Prabuddha Bansal, Michael Combs, Denis Fallon, Lawton E. Kizer
  • Publication number: 20140024093
    Abstract: In the pretreatment, the biomass is contacted with a solution containing at least one ?-hydroxysulfonic acid thereby at least partially hydrolyzing the biomass to produce a pretreated stream containing a solution that contains at least a portion of hemicelluloses and a residual biomass that contains celluloses and lignin; separating at least a portion of the solution from the residual biomass providing an solution stream and a pretreated biomass stream; then contacting the pretreated biomass stream with a cooking liquor containing at least one alkali selected from the group consisting of sodium hydroxide, sodium carbonate, sodium sulfide, potassium hydroxide, potassium carbonate, ammonium hydroxide, and mixtures thereof and water. A process that allows for higher recovery of carbohydrates and thereby increased yields is provided. Alcohols useful as fuel compositions are also produced from biomass by pretreating the biomass prior to hydrolysis and fermentation.
    Type: Application
    Filed: July 25, 2013
    Publication date: January 23, 2014
    Inventors: Robert Lawrence Blackbourn, Juben Nemchand Chheda, Evert Van Der Heide, Paul Richard Weider
  • Publication number: 20140000824
    Abstract: The present invention provides for the optimisation of conditions for treating pulp with a catalyst and hydrogen peroxide to produce a Freeness value (SR) in a web produced from the treated pulp such that the energy required in mechanical agitation of the pulp is reduced.
    Type: Application
    Filed: May 9, 2011
    Publication date: January 2, 2014
    Applicant: CATEXEL LIMITED
    Inventors: Ronald Hage, Kimberly Soraya Yang
  • Publication number: 20130340959
    Abstract: A method is provided for controlling deposit-forming contaminants that comprise pitch or other fiber components which can interfere with the processing of the fibers, reduce paper quality, or both in papermaking systems. The method includes contacting fibers with a lipase and at least one peroxide source-free oxidant, and optionally nonionic surfactant, to liberate the organic contaminants from the fibers. Paper products of the method are also provided.
    Type: Application
    Filed: April 19, 2013
    Publication date: December 26, 2013
    Applicant: Buckman Laboratories International, Inc.
    Inventors: Xiangdong Zhou, Percy Jaquess
  • Patent number: 8591702
    Abstract: Impregnating or spraying softwood chips in a solution containing an appropriate concentration of alkaline earth metal ions selected from the group consisting of calcium ions, barium ions and strontium, preferably calcium ions, at room temperature before a reductive alkaline pulping process, for example kraft pulping, significantly increases pulp yield. Using an agent that complexes with the metal ions, such as hydroxyethylidene diphosphonic acid (HEDP) allows this benefit of metal ions to be achieved during the pulping process rather than in a separate impregnation step.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: November 26, 2013
    Assignee: FPInnovations
    Inventors: Yujun Sun, Richard McKinnon Berry, Theodore Radiotis
  • Patent number: 8591701
    Abstract: A method of extracting hemp fibers from decorticated hemp bast skin involves pre-treating the decorticated hemp bast skin with an aqueous solution containing di-sodium citrate, tri-sodium citrate or a mixture thereof having a pH of from about 6-13 at temperature of about 90° C. or less; and subsequently treating recovered fiber with a enzyme. Determining the extent of completion of a plant fiber degumming process involves treating degummed fiber with a recombinant pectinase expressed in an organism that produces neither cellulose nor xylanase, to release reducing sugar from any residua pectin on the degummed fiber, and, quantifying the released reducing sugar.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: November 26, 2013
    Assignee: National Research Council of Canada
    Inventors: Wing L. Sung, Mark Wood, Fang Huang
  • Publication number: 20130289113
    Abstract: Acetyl xylan esterases and variants thereof having perhydrolytic activity are provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. Multi-component peracid generation systems comprising an enzyme catalyst having perhydrolytic activity are also provided, as are methods of using the present enzyme catalyst to produce peroxycarboxylic acids. The polypeptide having perhydrolytic activity may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, paper pulp processing, and personal care applications.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 31, 2013
    Inventors: Mark Scott PAYNE, Robert DiCosimo
  • Publication number: 20130289114
    Abstract: Acetyl xylan esterases and variants thereof having perhydrolytic activity are provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. Multi-component peracid generation systems comprising an enzyme catalyst having perhydrolytic activity are also provided, as are methods of using the present enzyme catalyst to produce peroxycarboxylic acids. The polypeptide having perhydrolytic activity may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, paper pulp processing, and personal care applications.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 31, 2013
    Inventors: Mark Scott PAYNE, Robert DiCosimo
  • Publication number: 20130289115
    Abstract: Acetyl xylan esterases and variants thereof having perhydrolytic activity are provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. Multi-component peracid generation systems comprising an enzyme catalyst having perhydrolytic activity are also provided, as are methods of using the present enzyme catalyst to produce peroxycarboxylic acids. The polypeptide having perhydrolytic activity may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, paper pulp processing, and personal care applications.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 31, 2013
    Inventors: Mark Scott PAYNE, Robert DiCosimo
  • Publication number: 20130261182
    Abstract: Acetyl xylan esterases and variants thereof having perhydrolytic activity are provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. Multi-component peracid generation systems comprising an enzyme catalyst having perhydrolytic activity are also provided, as are methods of using the present enzyme catalyst to produce peroxycarboxylic acids. The polypeptide having perhydrolytic activity may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, paper pulp processing, and personal care applications.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 3, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Mark Scott PAYNE, Robert DiCosimo
  • Publication number: 20130248128
    Abstract: A mild inexpensive process for treating lignocellulosic biomass involves oxidative delignification of wood using an aqueous solution prepared by dissolving a catalytic amount of manganese (III) acetate into water and adding hydrogen peroxide. Within 4 days and without agitation, the solution was used to convert poplar wood sections into a fine powder-like delignified, cellulose rich materials that included individual wood cells.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 26, 2013
    Applicant: LOS ALAMOS NATIONAL SECURITY, LLC
    Inventors: Kirk Davin Rector, Marcel Lucas, Gregory Lawrence Wagner, David Bryan Kimball, Susan Kloek Hanson
  • Publication number: 20130174993
    Abstract: A process of separating one or more components of corn fiber that comprises contacting the corn fiber with an extraction fluid that comprises at least one weak acid, increasing the temperature of the resulting mixture of fiber and fluid to solubilize hemicellulose of the corn fiber into the fluid, cooling the mixture, and separating the cooled extraction mixture into a soluble fraction comprising dissolved hemicellulose and an insoluble fraction comprising cellulose.
    Type: Application
    Filed: July 3, 2012
    Publication date: July 11, 2013
    Applicant: Tate & Lyle Ingredients Americas LLC
    Inventors: Rohit A. Medhekar, Andrew J. Hoffman
  • Publication number: 20130172628
    Abstract: The present disclosure provides an organosolv biorefining process. The present process comprises treating a lignocellulosic biomass in the presence of a solvent and under certain conditions to separate at least a part of the lignin from the biomass.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 4, 2013
    Applicant: LIGNOL INNOVATIONS LTD.
    Inventor: LIGNOL INNOVATIONS LTD.
  • Publication number: 20130153163
    Abstract: The invention describes solutions containing cellulose and a method of dissolving lignocellulosic materials. In the method, the lignocellulosic material is contacted with a conjugate acid, formed by a strong organic base and a weaker acid, under conditions which are conducive to at least a partial dissolution of the cellulosic components of the lignocellulosic material. It has been found that it is possible to recover at least a portion of the dissolved part of the lignocellulosic material by at least partial dissociation of the conjugate acid. Furthermore it is possible to recover at least a portion of the dissociated organic base and the acid, to form a conjugate acid of the recovered base and acid, and to recycle it for use in the first steps of the method.
    Type: Application
    Filed: June 23, 2011
    Publication date: June 20, 2013
    Applicant: FORESTCLUSTER LTD
    Inventors: Alistair W. T. King, Ilkka Kilpelainen
  • Publication number: 20130158115
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a variant of the Thermotoga maritima C277T acetyl xylan esterase is provided having an improved specific activity when producing peroxycarboxylic acids in the presence of an anionic surfactant. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. Du Pont De Nemours And Company
  • Publication number: 20130158117
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a variant of the Thermotoga maritima C277T acetyl xylan esterase is provided having an improved specific activity when producing peroxycarboxylic acids in the presence of an anionic surfactant. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130158116
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a variant of the Thermotoga maritima C277T acetyl xylan esterase is provided having an improved specific activity when producing peroxycarboxylic acids in the presence of an anionic surfactant. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130158118
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a variant of the Thermotoga maritima C277T acetyl xylan esterase is provided having an improved specific activity when producing peroxycarboxylic acids in the presence of an anionic surfactant. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130139980
    Abstract: Methods and systems are provided for producing market pulp which include treatment of pulp with diverse ionic compounds before pulp drying. Cationically and anionically charged compounds can be used to treat pulp before pulp drying to improve pulp dewatering performance and efficiency in the production of market pulp. Market pulp products containing the treatment compounds are also described.
    Type: Application
    Filed: November 26, 2012
    Publication date: June 6, 2013
    Applicant: BUCKMAN LABORATORIES INTERNATIONAL, INC.
    Inventor: Buckman Laboratories Internatinal, Inc.
  • Publication number: 20130139981
    Abstract: The invention provides a method of improving the digestion of wood chips into pulp. The method involves: adding a cross-linked glycerol-based polymer additive to a solution used in the digestion process. This additive is unexpectedly effective at facilitating digestion. The branched and ether structure of the additive allows it to withstand the harsh nature of a high stress environment. In addition, it is more soluble in the harsh condition than other surfactants. The structure, resistance, and particular balance between hydrophobic and hydrophilic regions, causes the additive to increases the interaction between the wood chips and the digestion chemicals. This in turn reduces the costs, the amount of additive needed, and the amount of reject wood chunks that result from the digestion process.
    Type: Application
    Filed: February 4, 2013
    Publication date: June 6, 2013
    Inventors: Prasad Y. Duggirala, Xiaojin Harry Li
  • Publication number: 20130126111
    Abstract: The present invention provides for the optimisation of conditions for treating pulp with a catalyst and hydrogen peroxide to produce a Freeness value (SR) in a web produced from the treated pulp such that the energy required in mechanical agitation of the pulp is reduced.
    Type: Application
    Filed: September 5, 2011
    Publication date: May 23, 2013
    Applicant: CATEXEL LIMITED
    Inventors: Ronald Hage, Kimberly Soraya Yang
  • Patent number: 8440159
    Abstract: Desirable chemicals are recovered from a raw material that is formed in substantial amounts during the production of cellulose pulp from renewable lingo-cellulose material. An ammonia/ammonium-containing methanol/water mixture is acidified with an acid that has the ability of forming ammonium salt with the ammonium. The mixture is circulated and passed through an apparatus that has an indirect heat exchanger combined with an storage volume fitted with a gas collection device.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: May 14, 2013
    Assignee: Metso Power AB
    Inventors: Jorg Brucher, Anders Johan Norberg
  • Publication number: 20130102667
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 25, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E.I. Du Pont De Nemours And Company
  • Publication number: 20130102666
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 25, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. Du Pont De Nemours And Company
  • Publication number: 20130102664
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 25, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. du Pont de Nemours and Company
  • Publication number: 20130102672
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 25, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E.I. Du Pont De Nemours And Company
  • Publication number: 20130102665
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 25, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. du Pont de Nemours and Company
  • Publication number: 20130102668
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 25, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. Du Pont De Nemours And Company
  • Publication number: 20130102670
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 25, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. Du Pont De Nemours And Company