Contacting With Aluminum Or Heavy Metal Material Patents (Class 528/485)
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Patent number: 10214628Abstract: A novel plasticizer blend(s) useful for plastisol compositions, including organisols, having good solvating properties, good viscosity profiles and compatibility with other plasticizers and solvents traditionally used in plastisols, comprising benzoate ester plasticizer(s) and a compatibilizing plasticizer component. Methods for preparing a plastisol having low viscosity and good rheology characteristics and for rendering a benzoate ester plasticizer, or blends thereof, compatible with organic solvents traditionally used in plastisols, by incorporating the novel plasticizer blend(s), which do not require adjusting the solubility parameters of the solvents to accommodate the plasticizer, are disclosed.Type: GrantFiled: March 14, 2014Date of Patent: February 26, 2019Assignee: Emerald Kalama Chemical, LLCInventors: William D. Arendt, Emily McBride, Rebecca Hanes
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Patent number: 9938363Abstract: The invention relates to methods for isolating and obtaining polychloroprene solids, wherein an aqueous polychloroprene dispersion is brought in contact with steam containing coagulant, whereby the polychloroprene solid coagulates.Type: GrantFiled: April 19, 2012Date of Patent: April 10, 2018Assignee: ARLANXEO Deutschland GMBHInventors: Thomas-Oliver Neuner, Heiner Stange, Rolf Josten, Rolf Feller, Mesut Fidan
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Patent number: 9435912Abstract: A wholly organic coating consisting of one or more layers of Py-BBL that is transparent in the IR region of the spectrum which is also thermally and oxdatively stable. This is coated onto IR transparent windows, domes and or optical lenses, for enhanced IR and signal filtering.Type: GrantFiled: November 15, 2012Date of Patent: September 6, 2016Assignee: The United States of America as Represented by the Secretary of the NavyInventors: William W. Lai, Lee R. Cambrea, Alfred J. Baca
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Patent number: 8785588Abstract: A tin-containing polyurethane resin having a melting temperature of 40 to 180° C., measured by DSC at a heating rate of 10 K/min and prepared by carrying out a condensation reaction between a diorganotin compound and carboxyl groups of a carboxyl-functional polyurethane resin, wherein the molar ratio between the tin and the carboxyl groups is 1:2-20; and liquid coating compositions containing solid particles of the tin-containing polyurethane resin.Type: GrantFiled: May 5, 2011Date of Patent: July 22, 2014Assignee: Axalta Coating Systems IP Co., LLCInventor: Carmen Flosbach
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Patent number: 8735537Abstract: The present application provides methods of producing polyanthracene including polymerization of anthracene monomers in the presence of oxidants and reaction solvents. The present application further provides polyanthracene produced by methods described herein that has higher solubility in organic solvents and better thermal stability and ablation resistance.Type: GrantFiled: June 4, 2010Date of Patent: May 27, 2014Assignee: Tongji UniversityInventors: Mei-rong Huang, Xin-gui Li, Shao-Jun Huang
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Patent number: 8735533Abstract: This invention relates to polymeric violet anthraquinone colorants having at least one poly(oxyalkylene) chain attached to an anthraquinone structure. Such colorants exhibit bright violet shade, excellent compatibility with organic media or aqueous systems, good lightfastness, and excellent thermal stability. The water soluble poly(oxyalkylene) substituted polymeric violet anthraquinone colorants also possess high water solubility, high color strength, non-staining properties, and high pH stability. The processes and methods for making such polymeric violet anthraquinone colorants and their use for coloring consumer products are also provided.Type: GrantFiled: November 24, 2009Date of Patent: May 27, 2014Assignee: Milliken & CompanyInventors: Xiaoyong Michael Hong, Robert L Mahaffey
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Patent number: 8703902Abstract: Polymerizable ionic liquid monomers and their corresponding polymers (poly(ionic liquid)s) are created and found to exhibit high absorption of radio frequency electromagnetic radiation, particularly in the microwave and radar bands. These materials are useful for coating objects to make them less reflective of radio frequency radiation and for making objects that absorb radio frequency radiation and are of minimal reflectivity to radio frequency radiation. Free-radical and condensation polymerization approaches are used in the preparation of the poly(ionic liquids).Type: GrantFiled: November 10, 2005Date of Patent: April 22, 2014Assignee: University of WyomingInventors: Maciej Radosz, Youqing Shen, Huadong Tang
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Patent number: 8541542Abstract: The present invention relates to a process for reducing residuals content in a vinyl aromatic polymer, said residuals comprising essentially unpolymerized vinyl aromatic monomer, wherein the vinyl aromatic polymer in the molten state is brought in contact with a solid in powder capable to catalyze the alkylation of said residual vinyl aromatic monomer on the vinyl aromatic polymer. Advantage of the present invention is a sharp reduction of the unpolymerized vinyl aromatic monomer in the vinyl aromatic polymer without generating a new residual and without inducing a colored vinyl aromatic polymer. The present invention also relates to said vinyl aromatic polymer having a low residuals content.Type: GrantFiled: July 13, 2007Date of Patent: September 24, 2013Assignee: Total Research & Technology FeluyInventors: Thomas-Maurice Roussel, Bruno Vuillemin, Francois Fajula
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Patent number: 8530554Abstract: A polymer assisted deposition process for deposition of metal oxide films is presented. The process includes solutions of one or more metal precursor and soluble polymers having binding properties for the one or more metal precursor. After a coating operation, the resultant coating is heated at high temperatures to yield metal oxide films. Such films can be epitaxial in structure and can be of optical quality. The process can be organic solvent-free.Type: GrantFiled: April 29, 2008Date of Patent: September 10, 2013Assignee: Los Alamos National Security, LLCInventors: Thomas M. McCleskey, Anthony K. Burrell, Quanxi Jia, Yuan Lin
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Patent number: 8524858Abstract: Provided is a high temperature-resistant metal adhesive containing hyperbranched poly(triazole)s synthesized by in situ azide/alkyne click polymerization. Also provided is a method for preparing the same adhesives by in situ click polymerization of azide and alkyne monomers on metal substrates. The method is optimized to get high adhesive strength at room temperature or elevated temperatures by analyzing the effects of monomer ratio, curing temperature and time, and annealing temperature and time. The hyberbranched poly(triazole)s adhesive has comparable or better temperature resistance compared with known high temperature epoxy metal adhesives, and it is the first high temperature metal adhesive using hyperbranched poly(triazole)s prepared by in situ azide/alkyne click polymerization.Type: GrantFiled: January 5, 2011Date of Patent: September 3, 2013Assignee: The Hong Kong University of Science and TechnologyInventors: Benzhong Tang, Youhong Tang, Ka Wai Jim, Anjun Qin, Wing Yip Lam, Jie Li
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Patent number: 8507398Abstract: Catalysts for metathesis reactions, in particular for the metathesis of nitrile rubber, are provided.Type: GrantFiled: August 18, 2008Date of Patent: August 13, 2013Assignee: LANXESS Deutschland GmbHInventors: Ludek Meca, Lubica Triscikova, Heinz Berke, Kirsten Langfeld, Martin Schneider, Oskar Nuyken, Werner Obrecht
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Patent number: 8436058Abstract: Embodiments of the present disclosure include a method for separating a product comprising a super absorbent polymer, a fiber and a plastic to separate the product into components thereof, the method comprising adding water to the product, and pressing the product in order to separate the product into components comprising a plastics component and a super absorbent polymer and fiber component. Other methods of the present disclosure include a method for producing a reusable plastic, reusable paper fiber stream and a reusable super absorbent polymer from the treatment of a product comprising a super absorbent polymer, a fiber and a plastic. Still other embodiments of the present disclosure include a method for the treatment of wet super absorbent polymer, comprising salt assisted dehydration.Type: GrantFiled: May 14, 2010Date of Patent: May 7, 2013Assignee: Knowaste International, LLCInventor: David Grimes
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Patent number: 8389673Abstract: An aryl composition includes aryl ether oligomers. These compositions may be prepared by reaction of one or more dihalobenzenes with one or more dihydroxybenzenes by an Ullman ether reaction. The oligomers may have two or more benzene rings and include terminal halogen, e.g., bromine (Br), or hydroxyl (OH) groups. These oligomers may be brominated to form flame retardant compositions for thermoplastic polymers.Type: GrantFiled: July 31, 2009Date of Patent: March 5, 2013Assignee: Chemtura CorporationInventors: Larry D. Timberlake, Julia E. Holland
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Patent number: 8362154Abstract: A novel process for the metathetic degradation of nitrile rubbers is provided which uses specific transition metal complex catalysts showing an increased activity.Type: GrantFiled: August 13, 2008Date of Patent: January 29, 2013Assignee: LANXESS Deutschland GmbHInventors: Christopher Ong, Werner Obrecht, Oskar Nuyken, Julia Maria Muller
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Patent number: 8350001Abstract: A method for removing a carbonization catalyst from a graphene sheet, the method includes contacting the carbonization catalyst with a salt solution, which is capable of oxidizing the carbonization catalyst.Type: GrantFiled: February 2, 2012Date of Patent: January 8, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Jaeyoung Choi, Keun Soo Kim, Byung Hee Hong
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Patent number: 8324325Abstract: Process for preparing polyether alcohols by polymerization by means of double metal cyanide catalysts (DMC catalysts), characterized in that, before or during the polymerization, one or more, optionally mixed additives consisting of compounds having one or more hydridic hydrogen atoms bonded to one silicon atom are added to the reaction mixture.Type: GrantFiled: November 25, 2008Date of Patent: December 4, 2012Assignee: Evonik Goldschmidt GmbHInventors: Wilfried Knott, Frank Schubert
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Catalytic depolymerization of polymers containing electrophilic linkages using nucleophilic reagents
Patent number: 8309618Abstract: The disclosure relates to methods and materials useful for depolymerizing a polymer. In one embodiment, for example, the disclosure provides a method for depolymerizing a polymer containing electrophilic linkages, wherein the method comprises contacting the polymer with a nucleophilic reagent in the presence of a guanidine-containing compound. The methods and materials of the disclosure find utility, for example, in the field of waste reclamation and recycling.Type: GrantFiled: July 1, 2009Date of Patent: November 13, 2012Assignees: International Business Machines Corporation, Stanford UniversityInventors: James Lupton Hedrick, Russell Clayton Pratt, Robert M. Waymouth -
Patent number: 8143371Abstract: This invention relates to a process for preparing polytrimethylene ether glycols or copolymers thereof having a number-average molecular weight of at least about 250 g/mole by a polycondensation reaction using at least one acid catalyst.Type: GrantFiled: October 31, 2008Date of Patent: March 27, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Mark Andrew Harmer, Christian Hoffmann, Scott Christopher Jackson, Edward R. Murphy, Rupert Spence
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Patent number: 8133969Abstract: A method for removing a carbonization catalyst from a graphene sheet, the method includes contacting the carbonization catalyst with a salt solution, which is capable of oxidizing the carbonization catalyst.Type: GrantFiled: May 16, 2011Date of Patent: March 13, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Jaeyoung Choi, Keun Soo Kim, Byung Hee Hong
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Patent number: 8129498Abstract: A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the carbonyl group. At least 85% of the nitrogens may be substituted. The carbonyl-containing moiety may include RCO—, where R is alkoxy or haloalkyl. The PBI compound may exhibit a first temperature marking an onset of weight loss corresponding to reversion of the substituted PBI that is less than a second temperature marking an onset of decomposition of an otherwise identical PBI compound without the substituted moiety. The PBI compound may be included in separatory media. A substituted PBI synthesis method may include providing a parent PBI in a less than 5 wt % solvent solution. Substituting may use more than 5 equivalents in relation to the imidazole nitrogens to be substituted.Type: GrantFiled: November 1, 2007Date of Patent: March 6, 2012Assignee: Battelle Energy Alliance, LLCInventors: John R. Klaehn, Eric S. Peterson, Christopher J. Orme, Michael G. Jones, Alan K. Wertsching, Thomas A. Luther, Tammy L. Trowbridge
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Patent number: 8097696Abstract: A method for preparing multi-arm poly(ethylene glycol) (PEG) chlorides from multi-arm PEG polyols is described. The method comprises a process, wherein the multi-arm PEG polyol is reacted with thionyl chloride to form the multi-arm PEG chloride.Type: GrantFiled: December 1, 2010Date of Patent: January 17, 2012Assignee: Actamax Surgical Materials, LLCInventor: Henry Keith Chenault
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Patent number: 8063174Abstract: A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the carbonyl group. At least 85% of the nitrogens may be substituted. The carbonyl-containing moiety may include RCO—, where R is alkoxy or haloalkyl. The PBI compound may exhibit a first temperature marking an onset of weight loss corresponding to reversion of the substituted PBI that is less than a second temperature marking an onset of decomposition of an otherwise identical PBI compound without the substituted moiety. The PBI compound may be included in separatory media. A substituted PBI synthesis method may include providing a parent PBI in a less than 5 wt % solvent solution. Substituting may use more than 5 equivalents in relation to the imidazole nitrogens to be substituted.Type: GrantFiled: November 1, 2007Date of Patent: November 22, 2011Assignee: Battelle Energy Alliance, LLCInventors: John R. Klaehn, Eric S. Peterson, Christopher J. Orme, Michael G. Jones, Alan K. Wertsching, Thomas A. Luther, Tammy L. Trowbridge
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Patent number: 8053584Abstract: The present case relates to a process for the purification of lactide from a crude lactide vapor product stream which process comprises a rectification/condensation step leading to a lactide-enriched condensate.Type: GrantFiled: December 10, 2003Date of Patent: November 8, 2011Assignee: Tate & Lyle Public Limited CompanyInventors: Johannes Meerdink, Nils Dan Anders Sädergard
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Patent number: 8008418Abstract: It is an object of the present invention to provide a copolymer containing a metal coordination compound that has blue phosphorescence emission with excellent color purity and, furthermore, to provide a copolymer containing a metal coordination compound that has luminescence of various colors from blue to red and a long operating life. The present invention relates to a metal coordination compound-containing copolymer that contains a metal coordination compound monomer unit represented by any one of Formulae (1) to (12): and at least one type of monomer unit selected from the group consisting of a substituted or unsubstituted quinoline monomer unit, a substituted or unsubstituted arylene and/or heteroarylene monomer unit, a substituted or unsubstituted branched monomer unit, and a substituted or unsubstituted conjugated monomer unit.Type: GrantFiled: June 18, 2004Date of Patent: August 30, 2011Assignee: Hitachi Chemical Co., Ltd.Inventors: Yoshii Morishita, Satoyuki Nomura, Yoshihiro Tsuda
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Patent number: 7999066Abstract: The present invention relates to a precipitation process for removing transition metals from polymer solutions. Specifically, it comprises the removal of transition metal complexes which usually comprise copper from polymer solutions after a completed atom transfer radical polymerization.Type: GrantFiled: February 12, 2007Date of Patent: August 16, 2011Assignee: Evonik Roehm GmbHInventors: Sven Balk, Gerd Loehden, Christine Miess, Christine Troemer, Monika Maerz
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Patent number: 7989582Abstract: The present invention relates to a process for producing tetrahydrofuran polymer or tetrahydrofuran copolymer by using heteropolyacid catalyst, and more particularly, to a process for producing tetrahydrofuran polymer by using hydronium ion water having a pH of 5.5 or less as a reaction initiator in the initiation step.Type: GrantFiled: October 22, 2008Date of Patent: August 2, 2011Assignee: Hyosung CorporationInventors: Eun-Ku Lee, Yong-Ho Baek, Joon-Seok Oh, No-Hyun Kim, Jae-Young Huh
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Patent number: 7968674Abstract: A method for removing a carbonization catalyst from a graphene sheet, the method includes contacting the carbonization catalyst with a salt solution, which is capable of oxidizing the carbonization catalyst.Type: GrantFiled: May 4, 2009Date of Patent: June 28, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jaeyoung Choi, Keun Soo Kim, Byung Hee Hong
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Patent number: 7947801Abstract: A method of synthesizing a poly(9,9-disubstituted-fluorene) includes reacting a 9,9-disubstituted-fluorene with an alkyl lithium in the presence of a catalytic amount of a nickel amine complex. The 9,9-disubstituted-fluorene includes solubility-enhancing substituents in the 9-position and leaving groups in the 2-position and the 7-position. The product poly(9,9-disubstituted-fluorene)s are fluorescent conjugated polymers that are useful as, for example, blue light-emitting materials.Type: GrantFiled: April 3, 2008Date of Patent: May 24, 2011Assignee: The University of MassachusettsInventors: Kenneth Raymond Carter, Sarav Bharat Jhaveri
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Patent number: 7923518Abstract: The present application provides novel nitrile rubbers comprising repeating units of at least one ?,?-unsaturated nitrile, at least one conjugated diene and optionally one or more further copolymerizable monomers which nitrile rubbers are distinguished by a specific calcium content as well as a specific chlorine content and dispose of specific thio end groups. Additionally, an improved polymerization and work-up process is provided to produce the aforementioned nitrile rubbers.Type: GrantFiled: February 14, 2008Date of Patent: April 12, 2011Assignee: LANXESS Deutschland GmbHInventor: Werner Obrecht
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Patent number: 7897719Abstract: The present invention provides a catalyst comprising a mixture of at least one acid-activated sheet silicate with a transition metal oxide of groups 8 and/or 9 of the Periodic Table of the Elements and also a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers, in which tetrahydrofuran is polymerized in the presence of at least one telogen and/or comonomer over such a catalyst.Type: GrantFiled: November 30, 2006Date of Patent: March 1, 2011Assignee: BASF SEInventors: Stephan Hatscher, Michael Hesse, Tobias Wabnitz, Stefan Kashammer, Rolf Pinkos
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Patent number: 7868132Abstract: A method for preparing multi-arm poly(ethylene glycol) (PEG) amines from multi-arm PEG polyols is described. The method comprises a two step process, wherein the multi-arm PEG polyol is first reacted with thionyl chloride to form a multi-arm PEG chloride, which is subsequently reacted with aqueous or anhydrous ammonia to yield the multi-arm PEG amine.Type: GrantFiled: April 5, 2007Date of Patent: January 11, 2011Assignee: E. I. du Pont de Nemours and CompanyInventor: Henry Keith Chenault
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Patent number: 7847056Abstract: An object of the invention is to provide a fluorine-containing (meth)acrylate polymer readily at a low cost without using any special polymerization facilities. Thus, the invention provides a fluorine-containing (meth)acrylate polymer obtained by reacting a (meth)acrylate polymer with an alcohol containing a fluorine atom represented by General Formula 1: Rf(CH2)nOH??(1) wherein Rf is a fluoroalkyl group or a fluoroalkyl ether group of 1 to 15 carbon atoms containing at least one or more fluorine atoms and n is an integer of 0 to 10 as well as a method for producing the same.Type: GrantFiled: March 25, 2005Date of Patent: December 7, 2010Assignees: Kaneka CorporationInventors: Etsuo Horii, Hirosuke Kawabata, Toshikazu Hirao, Akiya Ogawa, Xiaoliang Xu
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Patent number: 7820305Abstract: The present invention relates to phosphorescent copolymers comprising trifunctional triplet emitters. The polymers according to the invention are highly soluble, readily accessible synthetically and more suitable for use in organic light-emitting diodes than are comparative materials in accordance with the prior art.Type: GrantFiled: July 6, 2005Date of Patent: October 26, 2010Assignee: Merck Patent GmbHInventors: Niels Schulte, Susanne Heun, Ingrid Bach, Philipp Stössel, Kevin Treacher
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Patent number: 7795376Abstract: A method of isolating a PHA, includes combining the PHA, a first solvent and a second solvent to form a combination, the first solvent being capable of forming an azeotrope with the second solvent; and heating the combination to form the azeotrope of the first and second solvents.Type: GrantFiled: July 2, 2009Date of Patent: September 14, 2010Assignee: Metabolix Inc.Inventors: Johan Van Walsem, Erik Anderson, John Licata
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Patent number: 7772361Abstract: A PBI compound that includes imidazole nitrogens, at least a portion of which are substituted with an organic-inorganic hybrid moiety. At least 85% of the imidazole nitrogens may be substituted. The organic-inorganic hybrid moiety may be an organosilane moiety, for example, (R)Me2SiCH2—, where R is selected from among methyl, phenyl, vinyl, and allyl. The PBI compound may exhibit similar thermal properties in comparison to the unsubstituted PBI. The PBI compound may exhibit a solubility in an organic solvent greater than the solubility of the unsubstituted PBI. The PBI compound may be included in separatory media. A substituted PBI synthesis method may include providing a parent PBI in a less than 5 wt % solvent solution. Substituting may occur at about room temperature and/or at about atmospheric pressure. Substituting may use at least five equivalents in relation to the imidazole nitrogens to be substituted or, preferably, about fifteen equivalents.Type: GrantFiled: July 3, 2007Date of Patent: August 10, 2010Assignee: Battelle Energy Alliance, LLCInventors: John R. Klaehn, Eric S. Peterson, Alan K. Wertsching, Christopher J. Orme, Thomas A. Luther, Michael G. Jones
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Patent number: 7741428Abstract: A method for producing a borohydride is described that includes the steps of providing a source of borate; providing a material that chemically reduces the source of the borate to produce a borohydride; and reacting the source of the borate and the material by supplying heat at a temperature that substantially effects the production of the borohydride.Type: GrantFiled: August 21, 2008Date of Patent: June 22, 2010Assignee: Battelle Energy Alliance, LLCInventor: Peter C. Kong
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Patent number: 7683122Abstract: Disclosed are processes for preparing polyareneazole polymers including contacting a molar excess of a free base in water with a terephthalic acid salt to form an aqueous mixture, adjusting the pH to precipitate a monomer complex, contacting the monomer complex with metal powder, and polymerizing the monomer complex. Polyareneazoles, filaments and yarns are also disclosed.Type: GrantFiled: March 27, 2006Date of Patent: March 23, 2010Assignees: E. I. du Pont de Nemours and Company, Magellan Systems International, LLCInventors: Doetze Jakob Sikkema, David J. Rodini, Qinghong Fu Adkins, Steven R. Allen, Georg Valentin Martin, Ralf Demuth, Michael Schelhaas
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Patent number: 7622415Abstract: Provided are a polymerization catalyst composition for ethylene oxide which can give polyethylene oxide having a molecular weight lower than that of the prior art and a relatively narrow molecular weight distribution, and a process for the production of polyethylene oxide by the use of the catalyst composition. The catalyst composition makes it possible to produce polyethylene oxide having a molecular weight ranging from about 20,000 to 200,000 through direct polymerization in a high yield with economic advantage, and is characterized by comprising an organoaluminum compound and at least one member selected from among alkali metal alkoxides and alkali metal hydroxides. According to the process, polyethylene oxide having a molecular weight failing within the above range can be produced by the use of the catalyst composition under the same polymerication conditions as those of the prior art.Type: GrantFiled: October 30, 2003Date of Patent: November 24, 2009Assignee: Meisei Chemical Works, Ltd.Inventor: Hideki Izumi
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Patent number: 7576173Abstract: The present invention provides methods for isolating a PHA. The method comprises combining the PHA, a first solvent and a second solvent to form a combination, the first solvent and the second solvent being capable of forming an azeotrope with the second solvent; and heating the combination to substantially remove the first solvent from the combination. Alternatively, the method comprises combining the PHA, a first solvent, a second solvent and a third solvent to form a combination, the first solvent and the second solvent being capable of forming an azeotrope with the third solvent; and heating the combination to substantially remove the first solvent and the second solvent from the combination.Type: GrantFiled: September 6, 2005Date of Patent: August 18, 2009Assignee: Metabolix Inc.Inventors: Johan Van Walsem, Erik Anderson, John Licata
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Patent number: 7511113Abstract: An aromatic ether oligomer or polyaromatic ether comprising the formula: O—Arn; wherein Ar is an independently selected divalent aromatic radical; formed by reacting a dihydroxyaromatic with a dihaloaromatic; and wherein the reaction is performed in the presence of a copper compound and cesium carbonate. The polyaromatic ether is formed when neither the dihydroxyaromatic nor the dihaloaromatic is present in an excess amount. The aromatic ether oligomer is formed by using an excess of either dihydroxyaromatic or dihaloaromatic. A phthalonitrile monomer comprising the formula: formed by reacting a 3- or 4-nitrophthalonitrile with a hydroxy-terminated aromatic ether oligomer. A thermoset formed by curing the phthalonitrile monomer. Processes for forming all the above.Type: GrantFiled: March 17, 2004Date of Patent: March 31, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Dawn D. Dominguez
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Publication number: 20090062508Abstract: The present invention relates to a precipitation process for removing transition metals from polymer solutions. Specifically, it comprises the removal of transition metal complexes which usually comprise copper from polymer solutions after a completed atom transfer radical polymerization.Type: ApplicationFiled: February 12, 2007Publication date: March 5, 2009Applicant: Evonik Roehm GmbHInventors: Sven Balk, Gerd Loehden, Christine Miess, Christine Troemer, Monika Maerz
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Patent number: 7456249Abstract: The present invention relates to a solid, acid catalyst for the preparation of polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers by polymerization of tetrahydrofuran in the presence of at least one telogen and/or comonomer, which has a BET surface area of at least 160 m2/g and an acid center density of at least 0.05 mmol/g for pKa values of from 1 to 6, to a process for preparing it and to a process for the polymerization of cyclic ethers over this catalyst.Type: GrantFiled: January 10, 2008Date of Patent: November 25, 2008Assignee: BASF SEInventors: Stephan Schlitter, Martin Haubner, Michael Hesse, Stefan Kaeshammer, Rolf Pinkos, Christoph Sigwart
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Patent number: 7452959Abstract: An aromatic ether oligomer or polyaromatic ether comprising the formula: O—Arn; wherein Ar is an independently selected divalent aromatic radical; formed by reacting a dihydroxyaromatic with a dihaloaromatic; and wherein the reaction is performed in the presence of a copper compound and cesium carbonate. The polyaromatic ether is formed when neither the dihydroxyaromatic nor the dihaloaromatic is present in an excess amount. The aromatic ether oligomer is formed by using an excess of either dihydroxyaromatic or dihaloaromatic. A phthalonitrile monomer comprising the formula: formed by reacting a 3- or 4-nitrophthalonitrile with a hydroxy-terminated aromatic ether oligomer. A thermoset formed by curing the phthalonitrile monomer. Processes for forming all the above.Type: GrantFiled: March 17, 2004Date of Patent: November 18, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Dawn D. Dominguez
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Patent number: 7449542Abstract: A thienylene-arylene polymer comprised of a repeating segment containing at least one 2,5-thienylene unit selected from (I) and (II), and from about one to about three arylene units selected from (IIIa), (IIIb), and/or (IIIc) wherein R is an alkyl or an alkoxy; R? is halogen, alkyl, or alkoxy, and a and b represent the number of Rs.Type: GrantFiled: November 16, 2006Date of Patent: November 11, 2008Assignee: Xerox CorporationInventors: Yiliang Wu, Ping Liu, Lu Jiang, Beng S. Ong
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Patent number: 7439317Abstract: An amorphous polyester chip having superior processing ability is characterized by a moisture content of not more than 300 ppm and a fine particle content of not more than 500 ppm. A preferred embodiment is a copolymerized polyester chip comprising a main repeating unit consisting of ethylene terephthalate, and 1,4-dimethylene-cyclohexane terephthalate or neopentyl terephthalate, wherein the glycol component of the copolymerized polyester has a specific composition of 50 to 85 mol % of ethylene glycol, 12 to 45 mol % of 1,4-cyclohexanedimethanol or neopentyl glycol and 1.5 to 7.0 mol % of diethylene glycol. Such amorphous polyester chip can be obtained by cooling an amorphous polyester obtained by melt polymerization, cutting the polyester to give a chip, feeding the chip in a treatment tank, drying the chip and removing fine particles.Type: GrantFiled: June 30, 2004Date of Patent: October 21, 2008Assignee: Toyo Boseki Kabushiki KaishaInventors: Keisuke Suzuki, Hiroki Fukuda, Hideki Shimizu, Tsuyoshi Matsunaga
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Patent number: 7420027Abstract: A method for producing a borohydride is described and which includes the steps of providing a source of borate; providing a material which chemically reduces the source of the borate to produce a borohydride; and reacting the source of borate and the material by supplying heat at a temperature which substantially effects the production of the borohydride.Type: GrantFiled: November 17, 2004Date of Patent: September 2, 2008Assignee: Battelle Energy Alliance, LLCInventor: Peter C. Kong
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Patent number: 7381788Abstract: Provided is a continuous production method of a polyamide with stabilized polymerization degree and good quality, particularly an aromatic-containing polyamide.Type: GrantFiled: August 27, 2003Date of Patent: June 3, 2008Assignee: Toyo Boseki Kabushiki KaishaInventors: Yasuhito Tsujii, Gaku Maruyama, Kaoru Ogawa, Yoshinori Takada, Kazuhisa Koishi, Kenta Susuki
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Patent number: 7332565Abstract: A method for reducing the amount of residual monomer in aqueous polymer dispersions by aftertreatment with an initiator system comprises aftertreating the aqueous polymer dispersion with addition of an initiator system essentially comprising a) from 0.001 to 5% by weight, based on the total monomer amount used to prepare the polymer dispersion, of an inorganic salt of persulfuric acid, b) from 0.005 to 5% by weight, based on the total monomer amount used to prepare the polymer dispersion, of a methyl ketone, and c) optionally, catalytic amounts of a metal ion which is able to exist in a plurality of valence states.Type: GrantFiled: April 13, 2004Date of Patent: February 19, 2008Assignee: BASF AktiengesellschaftInventors: Mubarik Mahmood Chowdhry, Wolfgang Gaschler
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Patent number: 7309758Abstract: A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the carbonyl group. At least 85% of the nitrogens may be substituted. The carbonyl-containing moiety may include RCO—, where R is alkoxy or haloalkyl. The PBI compound may exhibit a first temperature marking an onset of weight loss corresponding to reversion of the substituted PBI that is less than a second temperature marking an onset of decomposition of an otherwise identical PBI compound without the substituted moiety. The PBI compound may be included in separatory media. A substituted PBI synthesis method may include providing a parent PBI in a less than 5 wt % solvent solution. Substituting may use more than 5 equivalents in relation to the imidazole nitrogens to be substituted.Type: GrantFiled: October 19, 2004Date of Patent: December 18, 2007Assignee: Battelle Energy Alliance, LLCInventors: John R. Klaehn, Eric S. Peterson, Christopher J. Orme, Michael G. Jones, Alan K. Wertsching, Thomas A. Luther, Tammy L. Trowbridge
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Patent number: 7271236Abstract: A preparation method of a polyester resin includes: under predetermined depolymerization conditions, mixing a polyester resin, a resin dissolvent and a polycondensation catalyst to depolymerize the polyester resin and form a first reaction mixture; adding a first monomer to the first reaction mixture to form a second reaction mixture; under predetermined polymerization conditions, adding a second monomer to the second reaction mixture to polymerize the depolymerized polyester resin and form a third reaction mixture; and adding a neutralizing agent to neutralize the polymerized reaction product of the third reaction mixture.Type: GrantFiled: September 16, 2005Date of Patent: September 18, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-woo Kim, Kyung-yol Yon, Young-ho Lee, Seong-geun Oh