Organic Patents (Class 162/72)
  • Patent number: 10662454
    Abstract: In one aspect, methods of treating lignocellulosic materials are described herein. In some embodiments, a method of treating a lignocellulosic material comprises degrading lignin of the lignocellulosic material with at least one fungus and hydrolyzing cellulose of the lignocellulosic material with at least one microorganism.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: May 26, 2020
    Assignee: University of North Carolina at Charlotte
    Inventors: Richard Giles, Matthew Parrow
  • Patent number: 10407355
    Abstract: A method of depolymerizing a lignin includes oxidizing the lignin to provide an oxidized lignin wherein benzylic —OH of ?-O-4 linkages have been converted to carbonyl. The oxidized lignin is depolymerized with a metal selected from the group consisting of zinc, magnesium, aluminum and titanium or mixtures thereof, in the presence of an ammonium salt or carbon dioxide. Also described are methods for manufacturing phenolic products from lignin and a method for the cleavage of a ?-O-4 linkage in a substrate.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: September 10, 2019
    Assignee: UNIVERSITY COURT OF THE UNIVERSITY OF ST ANDREWS
    Inventors: Nicholas James Westwood, Christopher Stuart Lancefield, Fanny Tran
  • Patent number: 10316108
    Abstract: An object of present invention is to provide a method for easily extracting and efficiently recovering xylan from wood. A xylan-containing material is produced by a method comprising steps of: (a) adding an acid and/or carbon dioxide to a black liquor discharged during a soda cooking step of wood chips including hardwood chips to adjust the pH of the black liquor to be in the range of 1 to 9, thereby giving a suspension; (b) dehydrating and washing an insoluble matter generated in the suspension to separately collect the insoluble matter; and (c) adding an organic solvent to the insoluble matter obtained at the step (b) to give a suspension, and separately collecting a xylan-containing material made of the insoluble matter present in the suspension by solid/liquid separation.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: June 11, 2019
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Shiho Tsuji, Masayuki Watanabe, Yutaka Nuruki, Shoichi Miyawaki
  • Patent number: 10093748
    Abstract: Processes disclosed are capable of converting biomass into high-crystallinity nanocellulose with surprisingly low mechanical energy input. In some variations, the process includes fractionating biomass with an acid (such as sulfur dioxide), a solvent (such as ethanol), and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and mechanically treating the cellulose-rich solids to form nanofibrils and/or nanocrystals. The crystallinity of the nanocellulose material may be 80% or higher, translating into good reinforcing properties for composites. The nanocellulose material may include nanofibrillated cellulose, nanocrystalline cellulose, or both. In some embodiments, the nanocellulose material is hydrophobic via deposition of some lignin onto the cellulose surface. Optionally, sugars derived from amorphous cellulose and hemicellulose may be separately fermented, such as to monomers for various polymers.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: October 9, 2018
    Assignee: API Intellectual Property Holdings, LLC
    Inventors: Kimberly Nelson, Theodora Retsina, Vesa Pylkkanen, Ryan O'Connor
  • Patent number: 10077392
    Abstract: Cement compositions and processes for reducing air entrainment in a cement composition generally include mixing a hydraulic cement with a defoamer compositions including one or more organic acid ester polymers selected from an organic acid ester of polyethylene oxide polymer, an organic acid ester of polypropylene oxide polymer, and a mixture thereof. The compositions may further comprise an organic acid ester of an ethylene oxide-propylene oxide block copolymer.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: September 18, 2018
    Assignee: Kemira Oyj
    Inventors: Amir H. Mahmoudkhani, Bava Luciana, Robert E. Wilson
  • Patent number: 10006167
    Abstract: The present invention relates to a delignification method which is applied for removing lignin from a biomaterial mixture in form of a pile, and essentially comprises the steps of piling of the biomaterials, treating the pile with an irrigation solution comprised of water or an aqueous solution comprising chemical materials, transferring the irrigation solution leached during reaching to the bottom of the pile to a pool or a storage unit with a drainage system, giving the irrigation solution which is transferred to the pool or the storage unit to irrigation again after controlling and optimizing, and leaching the pile by stopping the irrigation when the delignification process ends.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: June 26, 2018
    Assignee: ISTANBUL TEKNIK ÜNIVERSITESI
    Inventors: Oya Atici, Erdem Tezcan
  • Patent number: 9863090
    Abstract: There is described a method of fractionating a biomass material comprising: (i) blending the biomass material with an acid catalyst to form a slurry; (ii) mixing the slurry with an organosolv reagent optionally under an inert atmosphere to form a pre-treatment mix; (iii) subjecting the pre-treatment mix to sonication; (iv) optionally heating the product of step (iii) in an autoclave under pressure; (v) separating the solid and liquid components of the fractionation mix; (vi) optionally washing the solid; (vii) optionally drying the solid component; (viii) separating the liquid component into organic and aqueous components; and (ix) isolating lignin from the organic component and/or isolating hemi-cellulose from the aqueous component.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: January 9, 2018
    Assignee: BIO-SEP LIMITED
    Inventors: Malcolm Gilbert Gates, Anthony Robin McGarel-Groves, Nigel Donald Anderson, Kenneth John Coryton Day, Patrick Leahy, Geoffrey Nicholas Drage
  • Patent number: 9683329
    Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: June 20, 2017
    Assignee: The Research Foundation for The State University of New York
    Inventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
  • Patent number: 9650657
    Abstract: Methods for producing extracted and digested products from pretreated lignocellulosic biomass are provided. The methods include converting native cellulose I? to cellulose IIII by pretreating the lignocellulosic biomass with liquid ammonia under certain conditions, and performing extracting or digesting steps on the pretreated/converted lignocellulosic biomass.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: May 16, 2017
    Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventors: Shishir Chundawat, Leonardo Da Costa Sousa, Albert M. Cheh, Venkatesh Balan, Bruce Dale
  • Patent number: 9546452
    Abstract: A method of producing a paper board comprising: a pulping step of disintegrating and beating fibers from a pulp raw material containing waste paper as a main raw material to obtain pulping process water; a stock preparation step of adding an additive containing a paper strength additive to the obtained pulping process water to obtain a prepared pulp raw material; and a paper-making step of making the obtained prepared pulp raw material into a paper board, wherein the paper board is produced by adding (a) an aqueous solution of hypochlorite and (b) an aqueous solution of water-soluble inorganic ammonium salt or ammonia water to the pulping process water to reduce the amount of the paper strength additive added in the stock preparation step.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: January 17, 2017
    Assignees: KATAYAMA CHEMICAL, INC., NALCO JAPAN G.K.
    Inventors: Takahito Ikeshita, Yuji Fuchino, Hideaki Shimomoto, Hiroshi Hasegawa
  • Patent number: 9481874
    Abstract: The present invention relates to protein engineering, and concerns especially family G/11 xylanases, and genes encoding said enzymes. In specific, the invention concerns Trichoderma reesei XYNII gene, which codes for endo-1,4-?-xylanase (EC 3.2.1.8). The invention describes how site-directed mutagenesis can be used to improve the properties of an enzyme to match the industrial conditions where it is used. Protein engineering can be used to improve thermoactivity and thermostability of xylanases, as well as to broaden their pH range.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: November 1, 2016
    Inventors: Fred Fenel, Ossi Turunen, Matti Leisola
  • Patent number: 9371228
    Abstract: Embodiments of the present invention provide systems and methods for efficiently producing both a low-pressure ozone stream and high-pressure oxygen stream using a single air separation unit. The low-pressure ozone stream and high-pressure oxygen stream can be produced with significant energy savings and can be used in variety of applications, including the extraction of precious metals from ore with aqueous oxidation reactors and high-pressure oxidation reactors.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: June 21, 2016
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Timothy Christopher Golden, Vipul P. Dholakia, Sunita S. Sisodia
  • Patent number: 9347175
    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: Grant
    Filed: June 23, 2011
    Date of Patent: May 24, 2016
    Inventors: Alistair W. T. King, Ilkka Kilpelainen
  • Patent number: 9297804
    Abstract: The invention is directed to separation of amylase from body fluid by contacting said body fluid with starch under conditions enabling binding between the amylase and the starch, separating between the starch-amylase bound complexes and the free components, thereby removing the bound amylase, and collecting the non-bound components.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: March 29, 2016
    Assignees: YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM LTD., HADASIT MEDICAL RESEARCH SERVICES AND DEVELOPMENT LTD.
    Inventors: Aaron Palmon, Omer Doitch, Doron Aframian
  • Patent number: 9273335
    Abstract: The present invention relates to compositions comprising: a polypeptide having cellulolytic enhancing activity and a quinone compound. The present invention also relates to methods of using the compositions.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: March 1, 2016
    Assignee: NOVOZYMES, INC.
    Inventors: Jason Quinlan, Feng Xu, Matthew Sweeney
  • Patent number: 9121135
    Abstract: A method of producing cellulose from lignocellulosic material by sulfite digestion or sulfate digestion in the presence of a salt of dithionous acid comprises using the salt of dithionous acid in an amount from 0.1 to 4.0 wt. % based on the amount of oven-dry lignocellulosic material.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: September 1, 2015
    Assignee: BASF SE
    Inventors: Stefan Erren, Dieter Schönhaber, Martin Schachtl
  • Patent number: 9102956
    Abstract: A biomass hydrothermal decomposition apparatus that feeds a solid biomass material 11 from one side of an apparatus body 42, feeds hot water 15 from the other side, to hydrothermally decompose the biomass material 11 while bringing the biomass material 11 into counter contact with the hot water 15, dissolves hot-water soluble fractions in hot water, discharges the hot water to outside from the one side of the apparatus body 42 as a hot-water effluent 16, and discharges a biomass solid (a hot water insoluble) 17 to outside from the other side. The biomass hydrothermal decomposition apparatus includes an effective reaction region A formed from the other side to the one side of the apparatus body 42, in which a feeding temperature of the hot water 15 (for example, 200° C.) is maintained for a predetermined period of time to cause hydrothermal decomposition, and a temperature drop region B in which a temperature is rapidly dropped to a temperature (for example, 140° C.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: August 11, 2015
    Assignee: MITSUBISHI HEAVY INDUSTRIES MECHATRONICS SYSTEMS, LTD.
    Inventors: Minoru Genta, Ryosuke Uehara, Hideo Suzuki, Seiichi Terakura
  • Patent number: 9068293
    Abstract: The invention is directed towards methods and compositions for processes based on the combination of organic peroxyacids and ammonium salts that preserve and enhance the response to optical brighteners (fluorescent whitening dyes), brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The composition and method improve response to optical brighteners (fluorescent whitening dyes), maintain and/or enhance brightness and enhance the performance of paper products. Used in combination with optical brighteners the described agents produce a synergistic effect not previously identified in the paper process.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: June 30, 2015
    Assignee: NALCO COMPANY
    Inventors: Prasad Y. Duggirala, Sergey M. Shevchenko
  • Publication number: 20150139977
    Abstract: The invention relates to enzymes having xylanase, mannanase and/or glucanase activity, e.g., catalyzing hydrolysis of internal ?-1,4-xylosidic linkages or endo-?-1,4-glucanase linkages; and/or degrading a linear polysaccharide beta-1,4-xylan into xylose. Thus, the invention provides methods and processes for breaking down hemicellulose, which is a major component of the cell wall of plants, including methods and processes for hydrolyzing hemicelluloses in any plant or wood or wood product, wood waste, paper pulp, paper product or paper waste or byproduct. In addition, methods of designing new xylanases, mannanases and/or glucanases and methods of use thereof are also provided. The xylanases, mannanases and/or glucanases have increased activity and stability at increased pH and temperature.
    Type: Application
    Filed: October 22, 2014
    Publication date: May 21, 2015
    Inventors: David Weiner, David Blum, Alexander Varvak, Shaun Healey, Kristine Chang, Geoff Hazlewood, Thomas Todaro, Grace Desantis, Hwai Chang, Connie Jo Hansen, Scott W. Beaver, Thomas Woodward, Charles Hancock
  • Publication number: 20150129143
    Abstract: A pulping process comprises using a high concentration of anthraquinone (AQ). The pulping process is capable of providing a pulp having low Kappa number with unexpectedly high strength. The pulping process can use wood or non-wood fibers (e.g., bagasse and corn stover) to provide pulp having good papermaking quality. The method for pulping a fiber comprising cooking a first mixture comprising the fibers, water, an alkali, and a delignification selectivity enhancing chemical for a cooking time and at a cooking condition sufficient to form a first pulp having a desired Kappa number of about 15 or less, and strength parameters that are sufficient for papermaking, where the starting material prior to cooking has a Kappa number of 60 or greater.
    Type: Application
    Filed: October 23, 2014
    Publication date: May 14, 2015
    Inventors: Brent A. Hawkins, Fred Martin
  • Publication number: 20150125936
    Abstract: Provided herein are isolated laccase enzymes and nucleic acids encoding them. Also provided are mediators for laccase reactions. Also provided herein are methods for using laccases to oxidize lignins and other phenolic and aromatic compounds, such as for bio-bleaching and decolorization of wood pulp under high temperature and pH conditions to facilitate a substantial reduction in use of bleaching chemicals, as well as for treatment of fibers.
    Type: Application
    Filed: January 7, 2015
    Publication date: May 7, 2015
    Inventors: JANNE SAMULI KEROVUO, SYLKE HAREMZA, OLIVER KOCH, TILO HABICHER, DAN E. ROBERTSON, GRACE DESANTIS, RYAN MCCANN, PETER LUGINBUHL
  • 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: 20150090413
    Abstract: The present invention relates to wood pulp for glass plate-interleaving paper in which an amount of silicone contained in the wood pulp is 0.5 ppm or less with respect to an absolute dry mass of the pulp, as well as relates to interleaving paper for glass plates of which a raw material is the wood pulp, in which an amount of silicone contained in paper is 0.5 ppm or less with respect to the absolute dry matter of paper. The interleaving paper for glass plates formed from the wood pulp of the present invention, as well as interleaving paper for glass plates of the present invention are able to remarkably control contamination of silicone to the surface of glass plates for use as substrate material for flat panel displays for which a high degree of cleanliness and high quality are required.
    Type: Application
    Filed: December 26, 2013
    Publication date: April 2, 2015
    Applicant: Tokushu Tokai Paper Co., Ltd.
    Inventors: Yasuhiko Asai, Shinichi Akahori, Tomoki Hirasawa, Yoshiaki Tomotake
  • 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
  • Publication number: 20150053358
    Abstract: Methods to control organic contaminants in fibers are described. One method involves contacting the fibers with a) at least one zeolite and optionally b) detackifier, or an ester hydrolyzing enzyme, or both, for a sufficient time and in a sufficient amount to control the organic contaminants present in the fibers. This method is effective to reduce stickies in paper mill furnish formed with recycled fibers. A method for pitch control in paper mill furnish formed with virgin fibers is also provided. Resulting paper products formed from the processed fibers are also described as well as methods to make them.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 26, 2015
    Inventors: Weiping Ban, George S. Thomas
  • Patent number: 8940133
    Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes. The aqueous extract in embodiments including a water extract step is separated into acetic acid and hemicellulose sugar aqueous solutions.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: January 27, 2015
    Assignee: The Research Foundation for The State University of New York
    Inventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
  • Patent number: 8916024
    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: Grant
    Filed: November 26, 2012
    Date of Patent: December 23, 2014
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Weiping Ban, Philip M. Hoekstra, Michael R. Elsey
  • Patent number: 8914142
    Abstract: A method and a system for optimization of parameters for a recovery boiler in a pulp mill are disclosed. An exemplary method is based on use of a first principle mathematical model to estimate parameters that are otherwise not measurable, to accurately control the performance of the recovery boiler. In addition, a method is disclosed to use estimated parameters of a recovery boiler to control and stabilize the processes downstream of the recovery boiler. A system is also disclosed to carry out a method for control and optimization of performance and operational parameters of a recovery boiler.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: December 16, 2014
    Assignee: ABB Research Ltd
    Inventors: Tarun Prakash Mathur, Babji Buddhi Srinivasa
  • Patent number: 8906198
    Abstract: A method for producing micro fibrillated cellulosic material from pulp where multiple passes through a medium consistency refiner are made either singularly or in combination with low consistency refiners and high consistency refiners.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: December 9, 2014
    Assignee: Andritz Inc.
    Inventors: Marc Sabourin, Antti Luukkonen
  • Patent number: 8889038
    Abstract: This invention relates to wood preservatives containing copper complexes and calcium ions, zinc ions or calcium and zinc ions for protection of wood, cellulose, hemicellulose, lignocellulose, cellulosic materials and articles derived from cellulosic materials from decay caused by fungi. The calcium ions, zinc ions, or calcium and zinc ions improve the penetration of copper preservative agent into the interior of a treated material or article.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: November 18, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Albert Gordon Anderson, Mark A. Scialdone
  • Publication number: 20140305603
    Abstract: A process for making pulp includes providing plant fiber raw material. The plant fiber raw material can be wood fiber or gramineae plant fiber. The plat fiber raw material is cooked to make a pulp. A TEMPO catalytic oxidation system is added to the pulp to oxidize the pulp fiber. The oxidized pulp fiber is then bleached.
    Type: Application
    Filed: December 12, 2013
    Publication date: October 16, 2014
    Applicant: Goldeast Paper (Jiangsu) Co., Ltd
    Inventors: PU MA, XIANG-FEI LIU, YUNGCHANG F. CHIN, REN-RONG WANG
  • Publication number: 20140238626
    Abstract: Provided is a method which is capable of producing a cellulose nanofiber dispersion liquid that has a low viscosity and excellent fluidity even at a high concentration, while exhibiting excellent transparency. In a method for producing cellulose nanofibers, wherein a cellulosic starting material is oxidized in water using an oxidant in the presence of an N-oxyl compound and a compound that is selected from the group consisting of a bromide, an iodide and a mixture thereof and the thus obtained oxidized cellulose is defibrated and dispersed, pulp which is obtained by carrying out kraft cooking after a hydrolysis process is used as the cellulosic starting material.
    Type: Application
    Filed: September 13, 2012
    Publication date: August 28, 2014
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Shiho Tsuji, Masahiko Fukazawa, Shoichi Miyawaki, Takeshi Iimori
  • Publication number: 20140234921
    Abstract: The present invention relates to novel polypeptides, or fragments of polypeptides, genes encoding them and means for producing said polypeptides. In detail the invention relates to polypeptides having esterase, suberinase and/or cutinase activity at low pH. This invention relates also to compositions containing the polypeptides and methods of using the polypeptides.
    Type: Application
    Filed: April 11, 2012
    Publication date: August 21, 2014
    Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT
    Inventors: Antti Nyyssola, Hanna Kontkanen, Mari Hakkinen, Ville Pihlajaniemi, Markku Saloheimo, Johanna Buchert, Tiina Nakari-Setala
  • 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
  • Patent number: 8795469
    Abstract: Paper comprised solely of a nonwood fiber mix is demonstrated to meet the technical physical specifications of commercially produced papers made from wood. The esthetically impressive paper meets nearly every technical specification of commercially produced paper.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: August 5, 2014
    Assignee: Prairie Paper Ventures Inc.
    Inventor: Jeff Golfman
  • Publication number: 20140209260
    Abstract: A process using a multicomponent enzyme preparation to treat chips that have been crushed using a device that combines shear and compressive forces where treatment occurs mainly during decompression and reduces the specific energy consumption and/or increasing production of subsequent refining while maintaining or increasing handsheet physical properties. The enzyme preparation is to have a major endoglucanase activity, a significant mannanase activity and a slight cellobiohydrolase activity. This enzyme mixture is prepared from a genetically modified strain of Trichoderma reseii.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: UNIVERSITY OF NEW BRUNSWICK
    Inventors: Kecheng LI, Andre PELLETIER
  • Publication number: 20140182797
    Abstract: The present invention provides a method for producing modified nanofibrillated cellulose characterized by bringing cellulosic material into a fiber suspension, adsorbing a cellulose derivative or polysaccharide or polysaccharide derivative onto fibers in said fiber suspension under special conditions and subjecting the obtained fiber suspension derivative to mechanical disintegration. A modified nanofibrillated cellulose obtainable by a method of the present invention is provided. Furthermore, the invention relates to the use of said modified nanofibrillated cellulose.
    Type: Application
    Filed: October 31, 2013
    Publication date: July 3, 2014
    Applicant: UPM-KYMMENE OYJ
    Inventors: Jouni PALTAKARI, Janne Laine, Monika Österberg, Ramjee Subramanian, Jan-Erik Teirfolk
  • Patent number: 8764942
    Abstract: Methods to preserve starch present in pulp are provided and also methods to control calcium precipitation and/or scaling in digesters or BOD systems. The methods can be performed as part of a papermaking process. Process water containing pulp can be treated with a chloramine. Process water containing pulp with native starch can receive a double treatment with at least one biocide, such as chloramine, and at least one oxidant, such as sodium hypochlorite. The treatment can be performed in any suitable manner. The treatment can be performed at one or more stages or locations in a papermaking system. A target residual chloramine value or range can be achieved by the treatment. Packaging sheets/boards and other paper products manufactured using the methods provided exhibit superior strength and other desirable characteristics.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: July 1, 2014
    Assignee: Buckman Laboratories International, Inc.
    Inventor: Eddie Van Haute
  • Publication number: 20140174680
    Abstract: A pulping process comprises using a high concentration of anthraquinone (AQ). The pulping process is capable of providing a pulp having low Kappa number with unexpectedly high strength. The pulping process can use wood or non-wood fibers (e.g., bagasse and corn stover) to provide pulp having good papermaking quality. The method for pulping a fiber comprising cooking a first mixture comprising the fibers, water, an alkali, and a delignification selectivity enhancing chemical for a cooking time and at a cooking condition sufficient to form a first pulp having a desired Kappa number of about 15 or less, and strength parameters that are sufficient for papermaking, where the starting material prior to cooking has a Kappa number of 60 or greater.
    Type: Application
    Filed: August 30, 2012
    Publication date: June 26, 2014
    Applicant: Cargill, Incorporated
    Inventors: Brent A. Hawkins, Fred Martin
  • Patent number: 8758556
    Abstract: A method for inhibiting the formation, deposition and adherence of calcium salt scale to metallic and other surfaces in the equipment, vessels and/or piping of a chemical pulp process facility comprising adding an effective scale inhibiting amount of a composition to the alkaline aqueous mixture in the digester of said chemical pulping process. Said composition consists of at least one phosphonate component (I) and at least one component (II) consisting of at least one carboxylated fructan compound.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: June 24, 2014
    Assignee: Dequest AG
    Inventor: Sheldon Phillip Verrett
  • Patent number: 8668807
    Abstract: Disclosed herein are compositions and methods that involve ionic liquids and biomass. Multiphasic compositions involving ionic liquids and a polymer and uses of such compositions for fractioning various components of biomass are disclosed. Methods of making and using compositions comprising an ionic liquid, biomass, and a catalyst are also disclosed.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: March 11, 2014
    Assignee: Board of Trustees of The University of Alabama
    Inventors: Mustafizur Rahman, Hector Rodriguez, Ning Sun, Richard P. Swatloski, Daniel T. Daly, Robin D. Rogers
  • Patent number: 8657996
    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: Grant
    Filed: April 19, 2013
    Date of Patent: February 25, 2014
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Xiangdong Zhou, Percy Jaquess
  • 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: 20140048222
    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: 20140045225
    Abstract: The present invention discloses novel polypeptides and enzyme preparations containing them, which enhance the efficiency of the cellulosic degradation even at elevated temperatures. The polypeptides are produced by recombinant technology, and means for their production are described. The novel polypeptides are useful in processing biomass, and in biofuel, starch, textile, detergent, pulp and paper, food, feed or beverage industries. They may also be used e.g. in cleaning the interior of a dishwashing machine or for biofinishing or biostoning. The novel polypeptides are also useful in animal feed.
    Type: Application
    Filed: June 6, 2013
    Publication date: February 13, 2014
    Applicant: Roal Oy
    Inventors: Susanna MAKINEN, Kari JUNTUNEN, Alexandra KOMANDER, Kim LANGFELDER, Jari VEHMAANPERA, Terhi PURANEN
  • 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
  • Publication number: 20130330781
    Abstract: The present invention relates to enzyme preparations consisting essentially of an enzyme which has cellulytic activity, which perform very well in industrial applications such as laundry compositions, for biopolishing of newly manufactured textiles, for providing an abraded look of cellulosic fabric or garment, and for treatment of paper pulp. Further, the invention relates to DNA constructs encoding such enzymes, a method for providing a gene encoding for such enzymes, a method of producing the enzymes, enzyme preparations containing such enzymes, and the use of these enzymes for a number of industrial applications.
    Type: Application
    Filed: November 21, 2012
    Publication date: December 12, 2013
    Applicant: NOVOZYMES A/S
    Inventors: Martin Schulein, Lene Nonboe Andersen, Soren Flensted Lassen, Markus Sakari Kauppinen, Lene Lange, Ruby Ilum Nielsen, Shinobu Takagi, Michiko Ihara
  • Patent number: 8546109
    Abstract: The present invention relates to a method for lignocellulosic conversion to sugar using an ionic liquid pretreatment for the saccharification of lignocellulosic biomass. Thus, cellulose, hemicellulose, when hydrolyzed into their sugars, can be converted to ethanol fuel through well-established fermentation technologies. These sugars also form the feedstocks for production of a variety of chemical and polymers. The complex structure of the biomass required pretreatment to enable efficient saccharification of cellulose and hemicellulose components to their constituent sugars.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: October 1, 2013
    Assignees: Suganit Systems, Inc., The University of Toledo
    Inventors: Sasidhar Varanasi, Constance Ann Schall, Anantharam Prasad Dadi, Jared Anderson, Kripa Rao, Praveen Paripati, Guneet Kumar
  • Patent number: 8541220
    Abstract: This invention relates generally to enzymes, polynucleotides encoding the enzymes, the use of such polynucleotides and polypeptides and more specifically to enzymes having isomerase activity, e.g., racemase activity, e.g., amino acid racemase activity, alanine racemase activity, and/or epimerase activity, and/or catalyze the re-arrangement of atoms within a molecule, catalyze the conversion of one isomer into another, catalyze the conversion of an optically active substrate into a raceme, which is optically inactive, catalyze the interconversion of substrate enantiomers, catalyze the stereochemical inversion around the asymmetric carbon atom in a substrate having only one center of asymmetry, catalyze the stereochemical inversion of the configuration around an asymmetric carbon atom in a substrate having more than one asymmetric center, and/or catalyze the racemization of amino acids.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: September 24, 2013
    Assignee: Verenium Corporation
    Inventors: David P. Weiner, Ellen G. Burke, Peter Luginbuhl, Analia Bueno, Joslin M. Cuenca, Mervyn L. De Souza, Sherry Kollmann