Carboxylic Acid Esters Patents (Class 536/63)
  • Patent number: 10335385
    Abstract: Provided are compositions and methods for producing stable foods and beverages that contain high concentrations of additives such as essential fatty acids, including omega-3 fatty acids, omega-6 fatty acids, conjugated fatty acids, and other fatty acids; phytochemicals, including phytosterols and carotenoids; oil soluble vitamins; alpha lipoic acid; other oils; and coenzymes, including Coenzyme Q10, and other oil-based additives.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: July 2, 2019
    Assignees: Virun, Inc., Hormel Foods Corporation
    Inventors: Philip J. Bromley, Chetan S. Rao
  • Patent number: 10167347
    Abstract: The invention relates to a carboxylate ester of polysaccharide characterized in that it possesses ester bonds with trimellitic anhydride and is soluble in water. The polysaccharide is esterified with trimellitic anhydride and the degree of substitution of the polysaccharide lies in the range of from 0.5 to 3. The invention further relates to methods for the manufacture of these polysaccharides esters in organic solvents, in water or in an extruder or a kneader and to their use in fabric and home care formulations.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: January 1, 2019
    Assignee: BASF SE
    Inventors: Natalia Shabelina, Helmut Witteler, Juergen Detering, Ulrich Schneider, Jessica Neumann
  • Patent number: 9777074
    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: September 18, 2015
    Date of Patent: October 3, 2017
    Assignee: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Norma Lindsey Buchanan, Michael Eugene Donelson, Maryna Grigorievna Gorbunova, Thauming Kuo, Bin Wang
  • Patent number: 9693574
    Abstract: Provided are compositions that contain a modified food starch and one or more non-polar compounds. In some instances, the compositions contain a water-soluble derivative of vitamin E mixture, containing relatively high concentrations of dimer forms of the PEG-derivative of vitamin E. Compositions include concentrates, dilution compositions and compositions for direct consumption. Methods for preparing the compositions also are provided.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: July 4, 2017
    Assignee: Virun, Inc.
    Inventor: Philip J. Bromley
  • Patent number: 9605086
    Abstract: A resin composition includes a cellulose derivative, wherein a saturated water absorption of the resin composition is in a range of 7% or greater.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: March 28, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Kenji Yao
  • Patent number: 9217814
    Abstract: A cellulose acylate film containing at least one compound represented by the following Formula (I) or (II), and cellulose acylate, a polarizing plate using the same and a liquid crystal display device using the same, wherein in Formula (I), R1 represents an alkyl group; R2 and R3 each represent a hydrogen atom, an alkyl or an aryl group; R4 represents an alkyl group; Ar1 represents an aromatic group; m and n are integers; provided that when n is 1, Ar1 represents an aromatic group; and in Formula (II), R11 to R14 each represent a hydrogen atom, or an alkyl group; R11 and R12, and/or, R13 and R14 may form a ring; R15 and R17 each represent an alkyl group; and R16 and R18 each represent a hydrogen atom or alkyl group; Ar represents an arylene group; and 1, m1 and n1 are integers.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: December 22, 2015
    Assignee: FUJIFILM CORPORATION
    Inventors: Yutaka Nozoe, Yu Naito
  • Patent number: 9200084
    Abstract: The present invention relates to method for the preparation of a particulate reversibly-crosslinked polymeric material comprising: treating a particulate water-soluble hydroxyl-functional polymer in a liquid phase comprising a solvent mixture in that the hydroxyl-functional polymer is insoluble containing an organic solvent and water; a tetracarboxylic acid dianhydride represented by formula (I), 10 (I) wherein: U and V are independently selected from CH, N and P; 15 X is selected from a single bond, a saturated divalent (C1-C10) hydrocarbon group, O, S, NR, and PR, wherein R is selected from hydrogen and (C1-C4) alkyl; n and m are independently selected from 0 and 1; w is 1 or 2 with the proviso that; 20 if w is 1 then Y is X and if w is 2 then Y is selected from H and (C1-C4) alkyl, whereby there is no bond between both Y; and optionally a catalyst; to form a particulate reversibly-crosslinked polymeric material and 25 to a particulate reversibly-crosslinked polymeric material obtainable thereby.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: December 1, 2015
    Inventors: Purnendu Mukherjee, Eric P. Wasserman
  • Patent number: 9181351
    Abstract: A cellulose resin produced by binding cellulose or a derivative thereof and cardanol or a derivative thereof by using a hydroxy group of the cellulose or a derivative thereof and a hydroxy group of the cardanol or a derivative thereof, in which carbon atoms to which the hydroxy groups are bound are mutually linked via a carbonate bond or urethane bond formed by using the hydroxy groups.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: November 10, 2015
    Assignee: NEC CORPORATION
    Inventors: Shukichi Tanaka, Sungil Moon, Masatoshi Iji
  • Patent number: 9114154
    Abstract: Provided are compositions comprising a superhydrophilic amphiphilic copolymer and a carrier and composition comprising a superhydrophilic amphiphilic copolymer, a micellar thickener and a carrier.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: August 25, 2015
    Assignee: Johnson & Johnson Consumer Inc.
    Inventors: Michael J. Fevola, Frank C. Sun, Joseph J. LiBrizzi, Joseph B. Gardner, Russel M. Walters
  • Publication number: 20150148532
    Abstract: The present invention describes methods of treating cellulosic materials with a composition that provides increased hydrophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for esterification of available hydroxyl groups on cellulosic materials, where such hydroxyl groups are “masked” by bulky organic chains, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired.
    Type: Application
    Filed: June 25, 2013
    Publication date: May 28, 2015
    Inventor: Giussepe Trigiante
  • Publication number: 20150148531
    Abstract: The invention relates to a method for the manufacture of carbonyl derivatives of polysaccharides and to the oxidization of polysaccharides in the presence of nitrogen dioxide to yield carbonyl derivatives of polysaccharides. The products including carbonyl derivatives of polysaccharides, obtained by the method are also described.
    Type: Application
    Filed: May 15, 2013
    Publication date: May 28, 2015
    Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT
    Inventors: Hannu Mikkonen (deceased), Sauli Vuoti
  • Patent number: 9040683
    Abstract: This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: May 26, 2015
    Assignee: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Norma Lindsey Buchanan, Susan Northrop Carty, Chung-Ming Kuo, Juanelle Little Lambert, Michael Orlando Malcolm, Jessica Dee Posey-Dowty, Thelma Lee Watterson, Matthew Davie Wood, Margaretha Soderqvist Lindblad
  • Patent number: 9040684
    Abstract: This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: May 26, 2015
    Assignee: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Norma Lindsey Buchanan, Susan Northrop Carty, Chung-Ming Kuo, Juanelle Little Lambert, Michael Orlando Malcolm, Jessica Dee Posey-Dowty, Thelma Lee Watterson, Matthew Davie Wood, Margaretha Soderqvist Lindblad
  • Publication number: 20150141639
    Abstract: A process for producing a cellulose derivative, including reacting a reactant and a cellulose or a derivative thereof in a solid-liquid heterogeneous system to form a cellulose derivative containing a long-chain organic group having 5 or more carbon atoms introduced therein, in a swollen state, and performing solid-liquid separation to obtain the cellulose derivative containing a long-chain organic group introduced therein.
    Type: Application
    Filed: May 31, 2013
    Publication date: May 21, 2015
    Inventors: Kiyohiko Toyama, Massatoshi Iji, Shukichi Tanaka
  • Publication number: 20150119568
    Abstract: This invention concerns the first environmentally benign heterogeneous modification of polysaccharide-based material in native solid state by thiol-ene “click chemistry”. The direct reaction of a thiol with an un-activated double or triple bond by thiol-ene and thiol-enyne click modification is thermally or photochemically catalyzed and is completely metal-free and allows for a highly modular approach to modifications of fibers and fiber-based materials.
    Type: Application
    Filed: January 9, 2015
    Publication date: April 30, 2015
    Inventors: Armando CORDOVA, Jonas HAFREN
  • Publication number: 20150004237
    Abstract: Provided are cellulose esters useful for inhibiting solution crystallization of drugs. Specific polymers include cellulose esters of formula I: wherein n of the ?-carboxyalkanoyl group, is 3, 4, 6, or 8 to provide a ?-carboxyalkanoyl group chosen from succinoyl, glutaroyl, adipoyl, sebacyl, and suberyl groups; and wherein R is chosen from: a hydrogen atom; and an alkanoyl group chosen from acetyl, propionyl, butyryl, valeroyl, hexanoyl, nonanoyl, decanoyl, lauroyl, palmitoyl, and stearoyl groups; wherein there is a total degree of substitution of the alkanoyl group and the ?-carboxyalkanoyl group of at least 2.0; and wherein the polymer comprises m repeating units where n=1 to 1,000,000, or 10 to 100,000, or 100 to 1,000, such as 1 to 6,000. Embodiments further include compositions comprising cellulose esters and poorly water-soluble drugs, which compositions exhibit greater solubility and stability in solution as compared to the drugs alone.
    Type: Application
    Filed: January 9, 2013
    Publication date: January 1, 2015
    Inventors: Kevin J. Edgar, Bin Li, Lynne Taylor, Grace Ilevbare, Stephanie M. Williams, Haoyu Liu
  • Publication number: 20140377528
    Abstract: An optical film is provided and has retardations satisfying relations (1) to (3): 0?Re(550)?10??(1); ?25?Rth(550)?25??(2); and |I|+|II|+|III|+|IV|>0.5(nm)??(3), with definitions: I=Re(450)?Re(550); II=Re(650)?Re(550); III=Rth(450)?Rth(550); and IV=Rth(650)?Rth(550), wherein Re(450), Re(550) and Re(650) are in-plane retardations measured with lights of wavelength of 450, 550 and 650 nm, respectively; and Rth(450), Rth(550) and Rth(650) are retardations in a thickness direction of the optical film, which are measured with lights of wavelength of 450, 550 and 650 nm, respectively.
    Type: Application
    Filed: September 10, 2014
    Publication date: December 25, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Hajime NAKAYAMA, Hirofumi TOYAMA, Yuta TAKAHASHI
  • Patent number: 8916699
    Abstract: A cellulose resin produced by binding cardanol or a derivative thereof to cellulose or a derivative thereof with the use of a cellulose hydroxy group of the cellulose or a derivative thereof and the phenolic hydroxy group of the cardanol or a derivative thereof.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: December 23, 2014
    Assignee: NEC Corporation
    Inventors: Masatoshi Iji, Sungil Moon, Shukichi Tanaka, Hiroyuki Kai
  • Publication number: 20140322763
    Abstract: A process for production of C5 and C6 sugar enriched syrups from lignocellulosic biomass and fermentation products therefrom is described. A lignocellulosic biomass is treated with a C1-C2 acid (e.g., acetic acid) with washing thereof with a C1-C2 acid miscible organic solvent, (e.g., ethyl acetate). A soluble hemicellulose and lignin enriched fraction is obtained separately from a cellulose pulp enriched fraction and lignin is removed from the soluble hemicellulose fraction. These fractions contain acylated (e.g., acetylated) cellulose and hemicellulose, which are deacylated by treatment with an alkali and/or with an acetyl esterase enzyme. The deacylated fractions are then digested with suitable cellulolytic and/or hemicellulolytic enzymes, preferably in the presence of non-ionic detergent to yield the C5 and C6 enriched syrups.
    Type: Application
    Filed: May 16, 2014
    Publication date: October 30, 2014
    Applicant: ARCHER DANIELS MIDLAND COMPANY
    Inventors: Wuli Bao, Thomas Binder, Charles Abbas, Lucas Loveless
  • Patent number: 8865923
    Abstract: A method for separating neutral and polar lipids from an oil of biological material, wherein the oil is fractionated using a mixture of a polar solvent comprising at least one carbon atom, water and an additional substance selected from the group consisting of: mono-, di- and oligosaccharides comprising from 3 to 10 monosaccharide units, said additional substance is present in an amount of at least 0.1 wt % calculated on the total weight of solvent, water and additional substance, to form at least two liquid fractions having different densities, wherein one fraction is rich in polar lipids and another fraction is rich in neutral lipids. An oil rich in polar lipids obtained from the method is disclosed, said oil I contains at least 40, preferably at least 50 lipid % polar lipids as calculated on the total amount of lipids in said oil and that the total amount of polar solvent and water in said oil is between 20 and 30 wt %. An oat oil containing high amounts of estolides of DGDG can further be obtained.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: October 21, 2014
    Assignee: Swedish Oat Fiber AB
    Inventor: Magnus Härröd
  • Publication number: 20140296507
    Abstract: The invention relates to a method for the preparation of a polymer hydrogel, comprising cross-linking a precursor comprising a hydrophilic polymer optionally in combination with a second hydrophilic polymer, using a polycarboxylic acid as the cross-linking agent. The invention further concerns the polymer hydrogel obtainable by the method of the invention and the use thereof in a number of different applications.
    Type: Application
    Filed: January 8, 2014
    Publication date: October 2, 2014
    Applicant: GELESIS LLC
    Inventors: Alessandro Sannino, Luigi Ambrosio, Luigi Nicolais, Christian Demitri
  • Patent number: 8816066
    Abstract: This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: August 26, 2014
    Assignee: Eastman Chemical Company
    Inventors: Charles Michael Buchanan, Norma Lindsey Buchanan, Susan Northrop Carty, Chung-Ming Kuo, Juanelle Little Lambert, Jessica Dee Posey-Dowty, Thelma Lee Watterson, Matthew Davie Wood, Michael Orlando Malcolm, Margaretha Soderqvist Lindblad
  • Publication number: 20140178606
    Abstract: A cellulose acylate film containing a cellulose acylate, that has an aromatic group-containing acyl group and satisfies the formulae (I) and (II): 0.9?DSA?2.0??(I) 0.9?DS?2.0??(II) wherein DSA is a degree of substitution with the aromatic group-containing acyl group and DS is a total degree of substitution.
    Type: Application
    Filed: February 25, 2014
    Publication date: June 26, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Takashi TAMADA, Akihiro MATSUFUJI, Jun TAKEDA
  • Publication number: 20140155589
    Abstract: The inhibitory fiber against virulence factors production of the present invention comprises a fiber and an inhibitor of virulence factors production fixed to the fiber by chemical bonding. The inhibitor of virulence factors production includes at least one compound selected from the group consisting of a phosphate group-containing compound, a carboxylic acid group-containing compound, and a ketone group-containing compound. The production method of the present invention comprises: irradiating the fiber with an electron beam; and bringing into contact with the fiber at least one compound selected from the group consisting of a phosphate group-containing compound, a carboxylic acid group-containing compound, and a ketone group-containing compound to chemically bond the at least one compound to the fiber.
    Type: Application
    Filed: July 25, 2012
    Publication date: June 5, 2014
    Applicants: KURASHIKI BOSEKI KABUSHIKI KAISHA, KYOTO PREFECTURAL PUBLIC UNIVERSITY CORPORATION
    Inventors: Kohji Miyazaki, Kunihiro Ohshima, Susumu Katsuen
  • Publication number: 20140154756
    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 total mechanical energy may be less than 500 kilowatt-hours per ton. 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.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: API Intellectual Property Holdings, LLC
    Inventors: Kimberly NELSON, Theodora RETSINA, Vesa PYLKKANEN, Ryan O'CONNOR
  • Patent number: 8658147
    Abstract: The invention relates to a method for the preparation of a polymer hydrogel, comprising cross-linking a precursor comprising a hydrophilic polymer optionally in combination with a second hydrophilic polymer, using a polycarboxylic acid as the cross-linking agent. The invention further concerns the polymer hydrogel obtainable by the method of the invention and the use thereof in a number of different applications.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: February 25, 2014
    Assignee: Gelesis LLC
    Inventors: Alessandro Sannino, Luigi Ambrosio, Luigi Nicolais, Christian Demitri
  • Publication number: 20130345415
    Abstract: The present invention describes methods of treating cellulosic materials with a composition that provides increased hydrophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for esterification of available hydroxyl groups on cellulosic materials, where such hydroxyl groups are “masked” by bulky organic chains, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired.
    Type: Application
    Filed: June 25, 2012
    Publication date: December 26, 2013
    Applicant: Yagna Limited
    Inventor: Giuseppe Trigiante
  • Publication number: 20130338250
    Abstract: The present invention relates to cellulose fibers wherein a part of the hydroxyl groups of the cellulose have been substituted with at least one of a carboxy group and formyl group of 0.1 mmol/g or larger based on the weight of the cellulose fibers, and have been further substituted with a chemical modification group other than the carboxy and formyl groups.
    Type: Application
    Filed: August 21, 2013
    Publication date: December 19, 2013
    Applicants: OJI HOLDINGS CORPORATION, MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tomokazu UMEMOTO, Naohide Ogita, Takanori Shimizu, Yasutomo Noishiki, Hiroyuki Nagatani, Go Banzashi
  • Publication number: 20130217873
    Abstract: The present invention relates to method for the preparation of a particulate reversibly-crosslinked polymeric material comprising: treating a particulate water-soluble hydroxyl-functional polymer in a liquid phase comprising a solvent mixture in that the hydroxyl-functional polymer is insoluble containing an organic solvent and water; a tetracarboxylic acid dianhydride represented by formula (I), 10 (I) wherein: U and V are independently selected from CH, N and P; 15 X is selected from a single bond, a saturated divalent (C1-C10) hydrocarbon group, O, S, NR, and PR, wherein R is selected from hydrogen and (C1-C4) alkyl; n and m are independently selected from 0 and 1; w is 1 or 2 with the proviso that; 20 if w is 1 then Y is X and if w is 2 then Y is selected from H and (C1-C4) alkyl, whereby there is no bond between both Y; and optionally a catalyst; to form a particulate reversibly-crosslinked polymeric material and 25 to a particulate reversibly-crosslinked polymeric material obtainable thereby.
    Type: Application
    Filed: June 8, 2010
    Publication date: August 22, 2013
    Applicant: Dow Global Technologies LLC
    Inventors: Purnendu Mukherjee, Eric P. Wasserman
  • Publication number: 20130203982
    Abstract: This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents.
    Type: Application
    Filed: December 27, 2012
    Publication date: August 8, 2013
    Applicant: Eastman Chemical Company
    Inventor: Eastman Chemical Company
  • Patent number: 8455637
    Abstract: A process for adjusting an intermolecular or intramolecular degree of acetyl substitution of cellulose acetate is disclosed. The process comprises ripening cellulose acetate in the presence of a catalyst, an acetyl donor, and water or an alcohol. The amount of water and the alcohol is in the range of 0.1 to 10 mol % based on the amount of the acetyl donor.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: June 4, 2013
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Tohru Shibata, Yuichiro Shuto, Masaaki Ito, Tanemi Asai
  • Publication number: 20130115653
    Abstract: A method for utilizing woody biomass components, namely cellulose, hemicellose, and lignin, and converting them to value-added biobased chemical products is described herein. The present method provides treatments to obtain a plurality of component streams from woody biomass for producing derivative products while minimizing waste products.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 9, 2013
    Applicant: Thesis Chemistry, LLC
    Inventors: John R. Peterson, Christopher M. Yost, Jian Wu
  • Publication number: 20130115654
    Abstract: A method for utilizing agricultural biomass components, namely cellulose, hemicellose, and lignin, and converting them to value-added biobased chemical products is described herein. The present method provides treatments to obtain a plurality of component streams from agricultural biomass for producing derivative products while minimizing waste products.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 9, 2013
    Applicant: Thesis Chemistry, LLC
    Inventors: John R. Peterson, Christopher M. Yost, Jian Wu
  • Patent number: 8420187
    Abstract: A novel cellulose acylate composition is disclosed. The composition comprises at least one cellulose acylate having an aromatic group-containing acyl group (Substituent A), in which a substitution degree with Substituent A satisfies following relational expressions (I) and (II): DSA2+DSA3?DSA6>0.05,??(I) 0.11<DSA2+DSA3+DSA6<0.71,??(II) wherein DSA2, DSA3 and DSA6 each indicate a substitution degree with Substituent A at the 2-, 3- and 6-positions of the cellulose acylate.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: April 16, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Tomoko Imai, Akiko Watano
  • Publication number: 20130089737
    Abstract: The present invention provides a method of producing a polymer hydrogel comprising the steps of: (1) preparing an aqueous solution of a water soluble polysaccharide derivative and a polycarboxylic acid; (2) optionally agitating the solution, for example, by stirring; (3) isolating a polysaccharide derivative/polycarboxylic acid composite from the solution; and (4) heating the polysaccharide derivative/polycarboxylic acid composite at a temperature of at least about 80° C., thereby cross-linking the polysaccharide with the polycarboxylic acid. The invention also provides polymer hydrogels produced by the methods of the invention.
    Type: Application
    Filed: June 7, 2012
    Publication date: April 11, 2013
    Inventors: Alessandro Sannino, Christian Demitri, Yishai Zohar, Barry Joseph Hand, Eyal S. Ron
  • Patent number: 8399590
    Abstract: A superhydrophilic amphiphilic copolymer and process for making the superhydrophilic amphiphilic copolymer includes a low molecular weight polysaccharide modified with a hydrophobic reagent, such as substituted succinic anhydride. The superhydrophilic amphiphilic copolymer system generates stable foam for use in applications, such as healthcare formulations, with low irritation of the eyes and skin.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: March 19, 2013
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventors: Joseph B. Gardner, Michael J. Fevola, Frank C. Sun, Russel M. Walters
  • Publication number: 20130046089
    Abstract: Cellulose acetates and processes for producing same. The process involves esterifying a cellulose containing material in the presence of a densified gas such as supercritical carbon dioxide to form a cellulose acetate product having a degree of substitution less than 3. The cellulose acetate preferably is sulfate-free.
    Type: Application
    Filed: August 20, 2012
    Publication date: February 21, 2013
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Michael T. Combs, Raymond M. Robertson
  • Patent number: 8378091
    Abstract: A cellulose derivative which has a suitable elastic modulus and viscosity when it is dissolved in water and is useful as an adhesion barrier. The cellulose derivative has a molecular weight of 5×103 to 5×106 and is composed of a repeating unit represented by the following formula (1): wherein R1, R2 and R3 are each independently selected from the group consisting of the following formulas (a), (b), (c) and (d) in predetermined amount: (X in the formula (c) is an alkali metal, and R4 and R5 in the formula (d) are each independently an alkyl group or alkenyl group having 10 to 28 carbon atoms).
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: February 19, 2013
    Assignee: Teijin Limited
    Inventors: Hiroaki Kaneko, Eiichi Kitazono, Masaya Ito, Yoshihiko Sumi
  • Patent number: 8354525
    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: August 12, 2009
    Date of Patent: January 15, 2013
    Assignee: Eastman Chemical Company
    Inventors: Charles Michael Buchanan, Norma Lindsey Buchanan, Michael Eugene Donelson, Maryna Grigorievna Gorbunova, Thauming Kuo, Bin Wang
  • Publication number: 20120330002
    Abstract: This invention concerns the first environmentally benign heterogeneous modification of polysaccharide-based material in native solid state by thiol-ene “click chemistry”. The direct reaction of a thiol with an un-activated double or triple bond by thiol-ene and thiol-enyne click modification is thermally or photochemically catalyzed and is completely metal-free and allows for a highly modular approach to modifications of fibers and fiber-based materials.
    Type: Application
    Filed: January 19, 2011
    Publication date: December 27, 2012
    Applicant: ORGANOCLICK AB
    Inventors: Armando Cordova, Jonas Hafren
  • Publication number: 20120328877
    Abstract: The present invention is cellulose nanofibers having an average polymerization degree of 600 to 30000, an aspect ratio of 20 to 10000, an average diameter of 1 nm to 800 nm, and an I?-type crystal peak in an X-ray diffraction pattern.
    Type: Application
    Filed: September 5, 2012
    Publication date: December 27, 2012
    Applicant: Olympus Corporation
    Inventors: KOHEI SHIRAMIZU, Naohito Shiga, Takashi Magara, Kohei Oguni, Lianzhen Lin
  • Publication number: 20120264930
    Abstract: Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, ?A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.
    Type: Application
    Filed: March 1, 2012
    Publication date: October 18, 2012
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Michael Eugene Donelson, Elizabeth Guzman-Morales, Peter Borden Mackenzie, Bin Wang
  • Publication number: 20120263889
    Abstract: Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, ?A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.
    Type: Application
    Filed: March 1, 2012
    Publication date: October 18, 2012
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Michael Eugene Donelson, Elizabeth Guzman-Morales, Peter Borden Mackenzie, Bin Wang
  • Publication number: 20120262650
    Abstract: Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, ?A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.
    Type: Application
    Filed: March 1, 2012
    Publication date: October 18, 2012
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Michael Eugene Donelson, Elizabeth Guzman-Morales, Peter Borden Mackenzie, Bin Wang
  • Publication number: 20120263890
    Abstract: Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, ?A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.
    Type: Application
    Filed: March 1, 2012
    Publication date: October 18, 2012
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Michael Eugene Donelson, Elizabeth Guzman-Morales, Peter Borden Mackenzie, Bin Wang
  • Publication number: 20120248390
    Abstract: A polarizer protective film containing a cellulose acylate of such that when two polarizers are arranged on both sides of the film so as to block a transmitted light from running through the film and when the film is irradiated with a light on one side thereof and observed with an optical microscope where the object lens has 10 magnifications and the eye lens has 10 magnifications, on the opposite side thereof, the number of the bright spots existing therein and having a diameter of from 0.1 ?m to less than 10 ?m is at most 500/cm2.
    Type: Application
    Filed: March 19, 2012
    Publication date: October 4, 2012
    Applicant: FUJIFILM CORPORATION
    Inventors: Yuki MATSUDA, Jun TAKEDA, Masato MORITA
  • Patent number: 8277554
    Abstract: The invention relates to a hot melt adhesive, comprising at least one polysaccharide ester gained by a reaction of a polysaccharide with an imidazolide in melted imidazole. The invention relates, further, to a process for producing the hot melt adhesive, in which imidazole is melted, and an acid chloride and/or an acid anhydride and/or a lactone is reacted in and with the melted imidazole to form an imidazolide, whereby at least one polysaccharide is added to the melted imidazole, whereby the polysaccharide is reacted with the imidazolide to form a polysaccharide ester.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: October 2, 2012
    Assignees: Innovent e.V., Friedrich-Schiller-Universitat
    Inventors: Bernd Grünler, Andreas Heft, Marion Homuth, Thomas Heinze, Tim Liebert
  • Patent number: 8273872
    Abstract: Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by esterifying cellulose in a reaction medium comprising one or more halide ionic liquids and at least one binary component. Cellulose esters prepared via the methods of the present invention can have a degree of substitution (“DS”) of at least 1.5 and can comprise a plurality of ester substituents, where at least 50 percent of the ester substituents comprise alkyl esters having a carbon chain length of at least 6 carbons.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: September 25, 2012
    Assignee: Eastman Chemical Company
    Inventors: Charles Michael Buchanan, Norma Lindsey Buchanan
  • Publication number: 20120238741
    Abstract: Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by subjecting a cellulose-ionic liquid solution comprising cellulose, one or more ionic liquids, and one or more co-solvents to esterification to thereby produce an esterified medium comprising a cellulose ester. The co-solvents employed in the present invention can be either miscible or immiscible with the cellulose-ionic liquid solution but can be readily dispersed or soluble in the esterified medium.
    Type: Application
    Filed: June 1, 2012
    Publication date: September 20, 2012
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Norma Lindsey Buchanan
  • Publication number: 20120238742
    Abstract: Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by subjecting a cellulose-ionic liquid solution comprising cellulose, one or more ionic liquids, and one or more co-solvents to esterification to thereby produce an esterified medium comprising a cellulose ester. The co-solvents employed in the present invention can be either miscible or immiscible with the cellulose-ionic liquid solution but can be readily dispersed or soluble in the esterified medium.
    Type: Application
    Filed: June 1, 2012
    Publication date: September 20, 2012
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Norma Lindsey Buchanan