Contacting With Sulfur Or Phosphorus-containing Material Patents (Class 528/487)
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Patent number: 7795372Abstract: The present invention relates to a novel polymer film and also polymer fibers and polymers based on polyazoles, which can, owing to its excellent chemical and thermal properties, be used for a variety of purposes and is particularly useful as film or membrane for gas purification and filtration.Type: GrantFiled: August 14, 2003Date of Patent: September 14, 2010Assignee: BASF Fuel Cell GmbHInventors: Joachim Kiefer, Gordon Calundann, Oemer Uensal, Jochen Baurmeister, Frauke Jordt
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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: 7759449Abstract: The invention is a method for the late introduction of additives into polyethylene terephthalate. The method employs a reactive carrier that functions as a delivery vehicle for one or more additives. The reactive carrier reacts with the polyethylene terephthalate, thereby binding the reactive carrier in the polyethylene terephthalate resin and preventing the emergence of the reactive carrier and additives from the polyethylene terephthalate during subsequent thermal processing.Type: GrantFiled: October 8, 2004Date of Patent: July 20, 2010Assignee: Wellman, Inc.Inventors: Carl S. Nichols, Tony Clifford Moore
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Patent number: 7754846Abstract: Disclosed are thermal processes for increasing polyareneazole inherent viscosities.Type: GrantFiled: March 27, 2006Date of Patent: July 13, 2010Assignees: E. I. du Pont de Nemours and Company, Magellan Systems International, LLCInventors: Qinghong Fu Adkins, Doetze Jakob Sikkema, Steven R. Allen, David J. Rodini
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Patent number: 7687601Abstract: Conductive polymers are purified using a solid scavenger. The solid scavengers include metal-scavenging functional groups linked to the surface of a particle support material. To improve the functionalization of the support material, the support materials are first treated with sulfuric acid or nitric acid before attaching the molecules containing the metal-scavenging functional groups. The solid scavengers used in the purification methods are more efficient at removing impurities in conductive polymers than existing scavengers.Type: GrantFiled: October 3, 2006Date of Patent: March 30, 2010Assignee: Headwaters Technology Innovation, LLCInventors: Changkun Liu, Bing Zhou
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Publication number: 20100029900Abstract: Disclosed is a method for removing a metallic compound catalyst residue from a polymer solution which is prepared in the presence of a catalyst containing metal of Group 10 using a thiourea compound, a polymer from which the metallic compound catalyst residue is removed using the method, and a film produced using the method.Type: ApplicationFiled: November 7, 2007Publication date: February 4, 2010Applicant: LG CHEM, LTD.Inventors: Sung-Cheol Yoon, Hye-Young Jung, Sung-Ho Chun
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Patent number: 7595422Abstract: The invention relates to a novel process for conditioning isocyanates. The purpose of conditioning of isocyanates or of mixtures of isocyanates is to remove organophosphorus components in a suitable manner such that the organophosphorus compounds no longer interfere with processing of the isocyanates.Type: GrantFiled: December 20, 2007Date of Patent: September 29, 2009Assignee: Bayer MaterialScience AGInventors: Frank Richter, Andreas Hecking, Martin Brahm
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Publication number: 20090209719Abstract: A process for deactivating an active catalyst species in an olefin polymer stream exiting a polymerization reactor and neutralizing catalyst residues, as well as reducing corrosion, plugging or fouling of olefin production and recovery equipment and imparting antioxidative properties to an olefin polymer comprising adding a catalyst deactivator and an alkaline earth metal salt of a phosphoric- or phosphonic acid to an olefin polymer stream exiting a polymerization reactor, each in a quantity at least sufficient to deactivate active catalytic species in the polymer stream and neutralize catalyst residues, respectively, and subsequently recovering the resulting polymer product.Type: ApplicationFiled: June 13, 2007Publication date: August 20, 2009Inventor: Rony S.L. Vanspeybroeck
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Patent number: 7547757Abstract: Aryl-aryl coupled polymers are manufactured using a water-soluble noble metal catalyst. The hydrophilicity of the catalyst facilitates the separation of the catalyst from the polymer product. The method can be generally carried out by preparing a reaction medium comprising an aqueous phase and an organic phase. A water-soluble noble metal catalyst is dispersed in the aqueous phase. A base is also dispersed in the aqueous phase. An aryl-aryl coupled polymer is formed in the reaction medium by (i) adding at least one polymerizable monomer to the reaction mixture; and (ii) mixing the aqueous phase with the organic phase to cause polymerization of the monomer through an aryl-aryl coupling reaction. The polymer has a greater solubility in the organic phase than the aqueous phase. Allowing the organic phase to separate from the aqueous phase separates the water soluble catalyst from the polymer. The reaction can be used to manufacture high molecular weight polymers (e.g.Type: GrantFiled: August 1, 2006Date of Patent: June 16, 2009Assignee: Headwaters Technology Innovation, LLCInventors: Changkun Liu, Bing Zhou
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Patent number: 7534855Abstract: Provided is a method of preparing a vinylchloride-based resin. The method includes adding to a vinylchloride-based latex an acid, preferably, 1-7 parts by weight of the acid based on 100 parts by weight of a solid of the vinylchloride-based latex; optionally, incubating the resultant mixture at a temperature of 30˜60° C. for 30 minutes to 3 hours; and drying the mixture. Therefore, it is possible to reduce the viscosity of a vinylchloride-based plastisol, thereby improving the processability of the plastisol.Type: GrantFiled: October 30, 2006Date of Patent: May 19, 2009Assignee: LG Chem, Ltd.Inventors: Yoonjeong Baek, Kyung Hyun Kim, Hyunkyou Ha, Chan Hee Lee
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Patent number: 7517945Abstract: Polythiophenes of the formula wherein R is a side chain; m is the number of substituents; A is a divalent linkage; x, y and z represent, respectively, the numbers of R substituted thienylene, unsubstituted thienylene, and divalent linkages A in the monomer segment with z being either 0 or 1; and n represents the number of the repeating monomer segments in the polymer chain or the degree of polymerization.Type: GrantFiled: November 9, 2006Date of Patent: April 14, 2009Assignee: Xerox CorporationInventors: Beng S. Ong, Ping Liu, Lu Jiang, Yu Qi, Yiliang Wu
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Patent number: 7507351Abstract: Objects of the present invention are to provide a purification process that enables Pd to be removed effectively, and to provide an electroluminescent material and an electroluminescent device obtained by employing the process. The present invention relates to a process for purifying an electroluminescent material, the process involving treating, with a phosphorus-containing material, an electroluminescent material that contains Pd as an impurity so as to remove the Pd.Type: GrantFiled: June 4, 2004Date of Patent: March 24, 2009Assignees: Hitachi Chemical Co., Ltd., Maxdem IncorporatedInventors: Yoshihiro Tsuda, Yoshii Morishita, Satoyuki Nomura, Seiji Tai, Yousuke Hoshi, Shigeaki Funyuu, Farshad J. Motamedi, Li-Sheng Wang
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Patent number: 7470768Abstract: To provide a novel polyhydroxyalkanoate having a reactive functional group in a molecule and a method of producing the same; and a novel polyhydroxyalkanoate having a new function obtained by chemically modifying the polyhydroxyalkanoate having a reactive functional group and a method of producing the same. By utilizing a vinyl group of a polyhydroxyalkanoate containing a unit having the vinyl group at a side chain thereof, a polyhydroxyalkanoate containing units having a carboxyl group, an amide group, and a sulfonic group in a molecule is induced.Type: GrantFiled: June 9, 2005Date of Patent: December 30, 2008Assignee: Canon Kabushiki KaishaInventors: Takashi Kenmoku, Tatsuki Fukui, Chieko Mihara, Ako Kusakari, Tetsuya Yano
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Patent number: 7465782Abstract: A method of making polybenzobisoxazole containing fiber by use of a non-polybenzobisoxazole polymer, hydroxylating the polymer, forming the polymer into a fiber and heating the fiber wherein ring closure occurs in the hydroxylated polymer.Type: GrantFiled: July 13, 2005Date of Patent: December 16, 2008Assignee: E.I Du Pont De Nemours & CompanyInventor: Kiu-Seung Lee
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Patent number: 7465781Abstract: A method of making polybenzobisoxazole containing polymer by use of a non-polybenzobisoxazole polymer, hydroxylating the polymer, forming a solidified polymer and heating the solidified polymer wherein ring closure occurs in the hydroxylated polymer.Type: GrantFiled: July 13, 2005Date of Patent: December 16, 2008Assignee: E.I. du Pont de Nemours & CompanyInventor: Kiu-Seung Lee
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Patent number: 7459507Abstract: The present invention relates to a method for terminating anionic polymerization using phosphate ester/water mixture, more particularly to a novel method for terminating anionic polymerization using phosphate ester/water mixture as a polymerization terminator in a living polymer solution prepared by the anionic polymerization, so that the polymerization can be terminated effectively, without coupling or discoloration and with less production of basic materials that affect the antioxidant, thereby enabling control of acidity without necessitating a further neutralization process.Type: GrantFiled: May 10, 2007Date of Patent: December 2, 2008Assignee: Korea Kumho Petrochemical Co., Ltd.Inventors: Sam-min Kim, Young Jin Kim, Seung Il Kim, Ji-Eun Ryu
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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: 7432330Abstract: The present invention is directed to hydrolytically stabilized maleimide-functionalized water soluble polymers and to methods for making and utilizing such polymers and their precursors.Type: GrantFiled: December 31, 2003Date of Patent: October 7, 2008Assignee: Nektar Therapeutics AL, CorporationInventors: Antoni Kozlowski, Remy F. Gross, III, Samuel P. McManus
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Patent number: 7432331Abstract: The present invention is directed to hydrolytically stabilized maleimide-functionalized water soluble polymers and to methods for making and utilizing such polymers and their precursors.Type: GrantFiled: March 25, 2005Date of Patent: October 7, 2008Assignee: Nektar Therapeutics AL, CorporationInventors: Antoni Kozlowski, Remy F. Gross, III, Samuel P. McManus
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Publication number: 20080161534Abstract: The invention relates to a novel process for conditioning isocyanates. The purpose of conditioning of isocyanates or of mixtures of isocyanates is to remove organophosphorus components in a suitable manner such that the organophosphorus compounds no longer interfere with processing of the isocyanates.Type: ApplicationFiled: December 20, 2007Publication date: July 3, 2008Inventors: Frank Richter, Andreas Hecking, Martin Brahm
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Patent number: 7375176Abstract: A rigid, rod liquid crystal polymer includes a poly(phenylene sulfonic acid).Type: GrantFiled: March 31, 2005Date of Patent: May 20, 2008Inventors: Morton H. Litt, Sergio Granados-Focil
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Patent number: 7355057Abstract: The present invention relates to a series of platinum acetylide nonlinear optical chromophores which are liquid at room temperature. The viscosity of these liquid chromophores is low enough that they are easily processable into optical cells and can be used for nonlinear optical applications. The compounds remain liquids below room temperature, converting to a glass in the range of from about ?80° C. to ?100° C. Neat liquids have a high chromophore concentration (˜1 Mole/liter) making possible the development of optical devices requiring materials with a high chromophore concentration.Type: GrantFiled: November 17, 2004Date of Patent: April 8, 2008Inventors: Thomas M. Cooper, Benjamin C. Hall, Aaron R. Burke, Paul A. Fleitz
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Patent number: 7339007Abstract: A process for forming an ene reaction product wherein an enophile, such as maleic anhydride, is reacted with reactive polyalkene having a terminal vinylidene content of at least 30 mol. %, at high temperature in the presence of a free radical inhibitor. The polyalkenyl acylating agents are useful per se as additives in lubricating oils, functional fluids, and fuels and also serve as intermediates in the preparation of other products (e.g., succinimides) useful as additives in lubricating oils, functional fluids, and fuels. The presence of the free radical inhibitor during the high temperature reaction results in a reaction product that is low, or substantially free from sediment.Type: GrantFiled: June 20, 2003Date of Patent: March 4, 2008Assignee: Infineum International LimitedInventors: Matthew David Irving, Robert William Shaw, Jeremy Roger Spencer, Jacob Emert
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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: 7301002Abstract: Improved sulfonated polyphenylene compositions, improved polymer electrolyte membranes and nanocomposites formed there from for use in fuel cells are described herein. The improved compositions, membranes and nanocomposites formed there from overcome limitations of Nafion® membranes.Type: GrantFiled: September 10, 2004Date of Patent: November 27, 2007Assignee: Sandia CorporationInventors: Christopher J. Cornelius, Cy H. Fujimoto, Michael A. Hickner
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Patent number: 7301003Abstract: The present invention is directed to methods of preparing linear polymers such as polyalkylene oxides containing a terminal amine in high purity. One preferred method includes reacting a polyalkylene oxide such as polyethylene glycol containing a terminal azide with a phosphine-based reducing agent such as triphenylphosphine or an alkali metal borohydride reducing agent such as sodium borohydride in a solvent to reflux. The resultant polymer-amines are of sufficient purity so that expensive and time consuming purification steps required for pharmaceutical grade polymers are avoided.Type: GrantFiled: August 26, 2005Date of Patent: November 27, 2007Assignee: Enzon Pharmaceuticals, Inc.Inventors: Hong Zhao, Belen Rubio, Jing Xia
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Patent number: 7279244Abstract: The object of this invention is to provide a solid polymer electrolyte which is excellent in durability and of low cost, and membranes, solutions for electrode catalyst coating, membrane/electrode assemblies and fuel cells which use the electrolyte. According to this invention, there can be provided a fuel cell which comprises an electrode assembly having an electrode catalyst membrane formed therein, said catalyst membrane comprising a polymer electrolyte membrane held between an anode on one side of the principal plane of the electrolyte membrane and a cathode on the other side of the principal lane thereof, current collecting plates provided each independently in close contact, to the anode side and the cathode side of the electrode assembly, and electroconductive separators having gas supply passages to the anode and to the cathode provided on the outside surfaces of the current collecting plates.Type: GrantFiled: July 8, 2005Date of Patent: October 9, 2007Assignee: Hitachi, Ltd.Inventors: Makoto Morishima, Tomoichi Kamo, Toshiyuki Kobayashi, Kenji Yamaga, Tohru Koyama
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Patent number: 7259230Abstract: A PBI compound 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 5 equivalents in relation to the imidazole nitrogens to be substituted or, preferably, about 15.Type: GrantFiled: June 7, 2004Date of Patent: August 21, 2007Assignee: 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: 7241833Abstract: A process for production of phenolic novolak which comprises the step of conducting heterogeneous reaction of a phenol with 0.40 to 0.93 mol of an aldehyde per mol of the phenol in the presence of at least 25 parts by mass of a phosphoric acid per 100 parts by mass of the phenol. This process can give in high yield phenolic novolak with the contents of monomeric and dimeric phenols and a degree of dispersion controlled.Type: GrantFiled: November 15, 2002Date of Patent: July 10, 2007Assignee: Asahi Organic Chemicals Industry Co.., LTPInventors: Shigeki Inatomi, Noboru Tanoue
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Patent number: 7238771Abstract: Dibenzodiazocine polymers, methods for producing dibenzodiazocine polymers, products formed from dibenzodiazocine polymers, and uses for such dibenzodiazocine polymers are provided.Type: GrantFiled: April 22, 2005Date of Patent: July 3, 2007Assignee: Solvay Advanced Polymers, L.L.C.Inventors: Virgil J. Lee, Li-Sheng Wang
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Patent number: 7226987Abstract: Provided is an aromatic polymer phosphonic acid derivative in which a phosphonic acid derivative group is directly bound to aromatic ring. Said aromatic polymer phosphonic acid derivative can be produced by brominating a specific aromatic polymer compound with a brominating agent, then acting thereon trialkyl phosphite in the presence of a nickel halide catalyst to give a phosphonic acid di-ester, and further, by hydrolyzing the di-ester. The aromatic polymer phosphonic acid derivative is excellent in radical resistance and used for a solid polymer type fuel cell.Type: GrantFiled: May 13, 2004Date of Patent: June 5, 2007Assignee: Sumitomo Chemical Company LimitedInventors: Shigeru Sasaki, Arihiro Yashiro, Yasuaki Hidaka
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Patent number: 7220817Abstract: A process for producing polyarylene sulfide includes: steps of reacting an aromatic dihalide compound and an alkaline metal compound in a polar organic solvent for polymerization under heating and cooling a system including the reaction mixture to recover particulate polyarylene sulfide (PAS). The system after the reaction is gradually cooled at an average cooling speed of 0.2 to 1.0 deg. C./min. selectively in a temperature range of from 1 deg. C. below to 1 deg. C. above a maximum system-viscosity temperature. As a result, the process can be operated at a relatively short polymerization cycle and yet provides the product PAS particles with a high and stable bulk density as to exhibit good processability in the transportation and storage, and excellent transportability in a hopper or a screw of an extruder or a molding machine.Type: GrantFiled: July 11, 2003Date of Patent: May 22, 2007Assignee: Kureha CorporationInventors: Mitsuhiro Matsuzaki, Masaru Kagoshima
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Patent number: 7173104Abstract: The invention relates to products, especially moulding materials of polymers containing triazine segments and consisting of mixtures of meltable 4–18 ring oligotriazine ethers which are soluble in highly polar solvents, and in which the triazine rings are predominantly linked by alkylene diamino groups. Said moulding materials can contain up to 50 mass % of other reactive polymers such as ethylene copolymers, maleic acid anhydride copolymers, modified maleic acid anhydride copolymers, poly(meth)acrylates, polyamides, polyester and/or polyurethanes, up to 75 mass % of filling materials and/or reinforcing fibres, and up to 2 mass % of stabilisers, UV absorbers and/or auxiliary agents. The moulding materials of polymers containing triazine segments can be processed by means of conventional fusion methods and can be used as hot-melt adhesives and for producing plates, tubes, profiles, injection moulded parts, fibres, coatings and foamed material.Type: GrantFiled: November 19, 2002Date of Patent: February 6, 2007Assignee: AMI - Agrolinz Melamine International GmbHInventors: Manfred Rätzsch, Hartmut Bucka, René Dicke, Martin Burger, Steffen Pfeiffer, Christian Fürst
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Patent number: 7173103Abstract: A process for preparing high molecular weight polymers or copolymers by Suzuki coupling. The catalyst used in the process comprises a source of palladium and a source of a phosphine characterized in that at least one substituent on the phosphine is an ortho substituted aryl group. The process is suitable for the preparation of polymers for use in electronic and optoelectronic applications.Type: GrantFiled: October 21, 2002Date of Patent: February 6, 2007Assignee: Cambridge Display Technology LimitedInventors: Carl Towns, Paul Wallace, Ian Allen, Thomas Pounds, Lorraine Murtagh
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Patent number: 7169499Abstract: Polyphosphazene polymers having at least one sulfonated pendent group, and no more than five different sulfonated pendent groups, repeated along the polymer chain, wherein at least one the repeated sulfonated pendent groups links at least one SO3? group to the polymer chain through a nitrogen-free linkage containing at least three carbon atoms, are disclosed, along with methods of making same, and uses therefor.Type: GrantFiled: May 30, 2003Date of Patent: January 30, 2007Assignee: Parallel Solutions, Inc.Inventors: Alexander Andrianov, Jiangping Chen, Jonathan Sargent, Alexander Marin
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Patent number: 7148301Abstract: The invention relates to high purity fluoropolymers and processes for making such materials. These polymers are particularly suited for applications in the semiconductor industry. The process comprises removal of unstable polymer end groups by fluorination and removal of heavy metal impurities by extraction with an aqueous acid medium.Type: GrantFiled: December 22, 2003Date of Patent: December 12, 2006Assignee: 3M Innovative Properties CompanyInventors: Thomas J. Blong, Denis Duchesne, Gernot Loehr, Albert Killich, Tilman Zipplies, Ralph Kaulbach, Herbert Strasser
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Patent number: 7141644Abstract: Polythiophenes of the formula wherein R is a side chain; m is the number of substituents; A is a divalent linkage; x, y and z represent, respectively, the numbers of R substituted thienylene, unsubstituted thienylene, and divalent linkages A in the monomer segment with z being either 0 or 1; and n represents the number of the repeating monomer segments in the polymer chain or the degree of polymerization.Type: GrantFiled: January 11, 2002Date of Patent: November 28, 2006Assignee: Xerox CorporationInventors: Beng S. Ong, Ping Liu, Lu Jiang, Yu Qi, Yiliang Wu
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Patent number: 7129321Abstract: Thiophosphine compounds (also named phosphine sulfide compounds) and their use for making polymerizable compositions which after polymerization give optically transparent articles, such as ophthalmic lenses, having improved mechanical and optical properties and in particular having an improved UV cut.Type: GrantFiled: March 24, 2004Date of Patent: October 31, 2006Assignee: Essilor International Compagnie Generale d'OptiqueInventors: Sirisoma Wanigatunga, Aref Jallouli, Martin Rickwood, Yassin Yusef Turshani
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Patent number: 7119164Abstract: A sulfonated organic porous material in which at least 0.5 mg-equivalent/g (on a dry basis) of sulfonic acid groups has been introduced can be obtained by causing a gaseous substance containing sulfuric anhydride to come in contact with an organic porous material having mesopores existing on the walls of interconnected macropores and having a median radius of 0.01–100 ?m and a total pore volume of 1–50 ml/g. This preparation method can ensure the introduction of a large amount of sulfonic acid groups into an organic porous material in a short period of time.Type: GrantFiled: September 2, 2003Date of Patent: October 10, 2006Assignee: Organo CorporationInventors: Hiroshi Inoue, Koji Yamanaka, Akiko Yoshida, Yusaku Suenaga
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Patent number: 7081512Abstract: A process for treating a composition containing a polyamine-epihalohydrin resin that has a low level of CPD-producing species and good gelation stability is disclosed. A polyamine-epihalohydrin resin is prepared with a ratio of epihalohydrin:amine of less than about 1.1:1.0; The resin is then subjected to a base treatment followed by an acid treatment resulting in a resin that has good gelation storage stability and produces low levels of CPD.Type: GrantFiled: May 4, 2004Date of Patent: July 25, 2006Assignee: Hercules IncorporatedInventor: Richard J. Riehle
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Patent number: 7053174Abstract: Polythiophenes which are soluble or dispersible in anhydrous or low-water-content solvents can be prepared if they are prepared in anhydrous or low-water-content solvents and a phase-transfer catalyst is added during the reaction.Type: GrantFiled: November 21, 2001Date of Patent: May 30, 2006Assignee: Bayer AktiengesellschaftInventors: Stephan Kirchmeyer, Klaus Wussow, Friedrich Jonas, Andreas Elschner
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Patent number: 7022798Abstract: A prosthetic device having a polyaryletherketone component with a wettable surface is disclosed. The surface of the polyaryletherketone component has a surface chemistry which enhances the ability of tissues to grow directly thereon. An associated method for enhancing the wettability of a prosthetic device is also disclosed.Type: GrantFiled: February 16, 2004Date of Patent: April 4, 2006Assignee: DePuy Products, Inc.Inventor: Richard King
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Patent number: 7022743Abstract: The object of this invention is to provide a solid polymer electrolyte which is excellent in durability and of low cost, and membranes, solutions for electrode catalyst coating, membrane/electrode assemblies and fuel cells which use the electrolyte. According to this invention, there can be provided a fuel cell which comprises an electrode assembly having an electrode catalyst membrane formed therein, said catalyst membrane comprising a polymer electrolyte membrane held between an anode on one side of the principal plane of the electrolyte membrane and a cathode on the other side of the principal lane thereof, current collecting plates provided each independently in close contact, to the anode side and the cathode side of the electrode assembly, and electroconductive separators having gas supply passages to the anode and to the cathode provided on the outside surfaces of the current collecting plates.Type: GrantFiled: June 24, 2002Date of Patent: April 4, 2006Assignee: Hitachi, Ltd.Inventors: Makoto Morishima, Tomoichi Kamo, Toshiyuki Kobayashi, Kenji Yamaga, Tohru Koyama
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Patent number: 6995234Abstract: In the present invention, an inorganic reactant is, or reactants are, localized with respect to a dendritic polymer by physical constraint within or by a non-covalent conjugation to the dendritic polymer. The localized inorganic reactant or reactants is/are subsequently transformed to form a reaction product which is immobilized with respect to the dendritic polymer. This immobilization occurs on a nanoscopic scale as a consequence of the combined effects of structural, chemical and physical changes without having covalent bonds between the product(s) and the dendritic container and results in new compositions of matter called dendritic nanocomposites. The resulting nanocomposite material can be used to produce revolutionary products such as water soluble elemental metals, with specific applications including magnetic resonance imaging, catalytic, magnetic, optical, photolytic and electroactive applications.Type: GrantFiled: October 9, 2003Date of Patent: February 7, 2006Assignee: The Dow Chemical CompanyInventors: Donald A. Tomalia, Lajos Balogh
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Patent number: 6987150Abstract: The invention provides secondary sulfonamide polymers, wherein some, most, or all of the sulfonamido protons have been replaced with a substituent other than hydrogen. The invention also provides methods for preparing such polymers as well as devices (e.g. composite membranes) incorporating such membranes.Type: GrantFiled: November 22, 2002Date of Patent: January 17, 2006Assignee: Osmonics, Inc.Inventors: Christopher J. Kurth, Steven D. Kloos, Jessica A. Peschl, Leonard T. Hodgins
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Patent number: 6984716Abstract: A phosphorus-containing compound represented by formula (I) and a preparation method thereof are provided. An addition reaction is performed for an organic cyclic phosphorus compound with an aryl aldehyde compound, and then a condensation reaction is performed with an aryl compound having active hydrogen in the use of an organic acid as a catalyst to obtain the proposed phosphorus-containing compound. This phosphorus-containing compound can be used as a hardener for resin, and improves flame retardant properties and thermal resistance for a flame retardant epoxy resin composition, thereby suitably applied to resin compositions used for manufacturing printed circuit boards and laminated circuit boards in electronic or electric products.Type: GrantFiled: March 24, 2003Date of Patent: January 10, 2006Assignee: Chang Chun Plastics Co., Ltd.Inventors: Kuen-Yuan Hwang, An-Pang Tu, Chi-Yi Ju, Ching-Chung Lin
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Patent number: 6936685Abstract: The invention relates to a method for isolating polyorganosiloxanes from an aqueous dispersion, wherein the polyorganosiloxanes are separated from water in a dissolved form with the aid of an extraction agent.Type: GrantFiled: March 29, 2001Date of Patent: August 30, 2005Assignee: Wacker-Chemie GmbHInventors: Jochen Ebenhoch, Thomas Köhler, Hans Wintrich
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Patent number: 6894145Abstract: The present invention discloses methods to remove impurities in polymeric materials in order to improve the opto-electronic characteristics of devices fabricated from these polymers. The polymers include but not limited to polyarylenes, polyarylenevinylenes, polyaryleneethylnylene, polyfluorenes, polyanilines, polythiophenes, polypyrroles, and any conjugated co-polymers. The methods involve the selection of a scavenger or chelating agent and use it to remove metallic impurities from the polymers. The methods involve dissolving the polymer in a suitable solvent, adding a scavenger, mixing to form a scavenger, containing phase, and finally separating the scavenger containing phase from the polymer phase. According to this invention, it is preferable for the selected scavengers to have functional groups which can chemically react with metallic species and form a coordination compound that is not soluble in a selected solvent.Type: GrantFiled: June 16, 2003Date of Patent: May 17, 2005Assignee: Organic Vision Inc.Inventors: Steven Shuyong Xiao, Chunong Qiu, Cindy Xing Qiu
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Patent number: 6881816Abstract: A melt processible Polyether Ether Ketone (PEEK) polymer with novel end-group structure is synthesized electrophilically using Methane Sulfonic Acid containing Methane Sulfonic Anhydride or Phosphorous Pentoxide. The product so obtained shows controlled structure with elimination of reactive end group like —COOH and is therefore melt processible by conventional techniques and exhibits high thermal and mechanical properties making it useful high temperature engineering and specialty plastics. It can be extruded into a rod, film and can also be molded into commercially useful products.Type: GrantFiled: March 14, 2003Date of Patent: April 19, 2005Assignee: Gharda Chemicals Ltd.Inventors: Keki Hormusji Gharda, Prakash Druman Trivedi, Venkat Srinivasan Iyer, Utpal Mahendra Vakil, Sanjav Chintaman Limaye
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Patent number: 6864339Abstract: The present invention is generally directed to a process for preparing aromatic polymers. It further relates to devices that are made with the polymers.Type: GrantFiled: November 7, 2002Date of Patent: March 8, 2005Assignee: E. I. du Pont de Nemours and CompanyInventor: Frank P. Uckert