Contacting With Sulfur Or Phosphorus-containing Material Patents (Class 528/487)
  • Patent number: 9957587
    Abstract: The present invention relates to a process for efficiently enriching and recovering noble metals of platinum and palladium based on solvent extraction, wherein isoamyl alcohol is used as extracting agent and 2-methoxyphenyl thiourea is used as extraction-assisted complexing agent. 2-methoxy-phenyl thiourea is added to aqueous phase to react with platinum and palladium, and isoamyl alcohol is used as extracting agent to extract the organic phase, thus realizing the purpose of separating and extracting noble metals from base metals while enriching noble metals of platinum and palladium. The present invention, which can not only realize the separation of noble metals and base metals, but also enhance the enrichment and recovery ratios of noble metals of platinum and palladium, with low cost reagents, small influence on the environment and simple technical process, thus is a new and efficient extraction and enrichment system for noble metals.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: May 1, 2018
    Assignee: BEIJING UNIVERSITY OF TECHNOLOGY
    Inventors: Xiaoli Xi, Zuoren Nie, Xiaokai Sun, Liwen Ma
  • Patent number: 9000121
    Abstract: The present invention relates to new condensation resins formed from urea, formaldehyde and CH-acidic aldehydes, to processes for preparing them, and to use thereof.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: April 7, 2015
    Assignee: BASF SE
    Inventors: Stefan Meuer, Klaus Menzel, Guenter Scherr
  • Patent number: 8946377
    Abstract: The present invention relates to a process for preparing high-functionality polyetherols by reacting at least one trifunctional or higher-functionality alcohol and if appropriate further di- and/or monofunctional alcohols and/or modifying reagents, with the aid of acidic catalysts, where the trifunctional or higher-functionality alcohol is not glycerol. The present invention further relates to high-functionality polyetherols obtainable by such a process and to the use of these high-functionality polyetherols as adhesion promoters, thixotropic agents, rheology modifiers of polymers, phase transfer reagents, micro- or nanocontainers for biologically active compounds, for example for active medical ingredients, biocides, herbicides or fungicides, as pigment dispersants, an additive in printing inks or as structural units for preparing polyaddition or polycondensation polymers or for treatment of seed.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: February 3, 2015
    Assignee: BASF SE
    Inventors: Rolf Muelhaupt, Anne Fiedler, Fabian Schueler, Bernd Bruchmann, Markus Schuette, Daniel Schoenfelder
  • Patent number: 8937149
    Abstract: The present invention provides nano-sized particles of melanin, and the method for formation of the melanin particles comprise the following steps: adding a base to a dopamine.H+X?-containing solution (wherein H+X? is an acid) and allowing an acid-base neutralization reaction; and forming nano-sized particles of melanin by controlling the addition of nucleic dopamine.H+X? (a) to base (b) at a ratio of a:b=1:0.1-1, and allow concurrent or consecutive formation of melanin by oxidation curing of the dopamine in air (polymerization). The manufacturing method according to the present invention can produce nano-sized melanin particles in a short period of time. Furthermore, the nano-sized melanin particles made according to the present invention are distinctive from conventional solvents containing dispersions of natural melanin and synthetic melanin, and have excellent application in various fields.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: January 20, 2015
    Assignee: SNU R&DB Foundation
    Inventors: Jin Kyu Lee, Kuk Youn Ju
  • Patent number: 8895672
    Abstract: Provided herein are methods for preparing vinylidene-terminated polyolefins. Further provided herein are sulfide-terminated polyolefins.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: November 25, 2014
    Assignee: Chevron Oronite Company LLC
    Inventor: Casey D. Stokes
  • Patent number: 8889816
    Abstract: Disclosed is a method for preparing a phosphorus-containing polyphenylene oxide resin with a low molecular weight, comprising the steps of: step 1: providing a phosphorus-containing phenolic compound and a raw polyphenylene oxide resin having a number-average molecular weight of more than 10000; step 2: dissolving the raw polyphenylene oxide resin into a solvent to make a solution of the raw polyphenylene oxide resin; step 3: adding the phosphorus-containing phenolic compound into the solution of the raw polyphenylene oxide resin; step 4: introducing an initiator, and carrying out a re-dispersing reaction at a reaction temperature of above 60° C. under the effect of the initiator; and step 5: after the reaction is finished, the product obtained being phosphorus-containing polyphenylene oxide resin with a low molecular weight, the number-average molecular weight thereof being 1000-6000.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: November 18, 2014
    Assignee: Shengyi Technology Co., Ltd.
    Inventors: Yundong Meng, Kehong Fang
  • Patent number: 8815964
    Abstract: A process for forming a vulcanized elastomer composition. An alternating electric field is applied to a first composition comprising vulcanized crosslinked elastomer particles while the composition is compressed to thereby devulcanize the crosslinked elastomer particles and form a second composition comprising devulcanized elastomer particles A crosslinking agent is added to the second composition comprising the devulcanized elastomer particles. The second composition having the crosslinking agent is then vulcanized to form the vulcanized elastomer composition.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: August 26, 2014
    Assignee: Navation IQ LLC
    Inventor: Michel Marc
  • Patent number: 8816044
    Abstract: Disclosed are flexible polyamines, flexible amine-terminated polyformal adducts, flexible-amine-terminated polythioether adducts, compositions comprising flexible polyamines and isocyanate-terminated prepolymers, and compositions comprising flexible amine-terminated adducts and isocyanate-terminated prepolymers. Uses of the compositions as sealants, and particularly as aerospace sealants, are also disclosed.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: August 26, 2014
    Assignee: PRC DeSoto International, Inc
    Inventors: Stephen J. Hobbs, Marfi Ito, Juexiao Cai, Chandra Rao, Renhe Lin
  • Patent number: 8809491
    Abstract: The present invention provides a method for depolymerization of a mixture comprising oligomeric cyclic ethers resulting from copolymerization of at least one tetrahydrofuran and at least one other cyclic ether to recover tetrahydrofuran monomer.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: August 19, 2014
    Assignee: INVISTA North America S.à r.l.
    Inventors: Robert B. Osborne, Paul S. Pearlman, Yanhui Sun
  • Patent number: 8802791
    Abstract: An abrasive product includes a plurality of abrasive particles and a resin cured with a polythiol group. A method of preparing the abrasive product includes contacting the plurality of abrasive particles with a curable composition that includes a resin and a polythiol group, and curing the curable composition to produce the abrasive product. A method of abrading a work surface includes applying an abrasive product to a work surface in an abrading motion to remove a portion of the work surface. A curable composition includes a formaldehyde resin and a polythiol group. A formaldehyde resin is crosslinked by a polythiol group. A method of crosslinking the formaldehyde resin includes reacting the polythiol group with the formaldehyde resin.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: August 12, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Anthony C. Gaeta, William C. Rice
  • Patent number: 8785593
    Abstract: A novel process for producing a polyamidoamine-epihalohydrin resin composition comprises (a) reacting a polyamidoamine with epihalohydrin to obtain a reaction mixture comprising a polyamidoamine-epihalohydrin resin; (b) adding a first acid to the reaction mixture obtained in step (a) to obtain an acid treatment composition; (c) adding a base to the acid treatment composition in step (b) to obtain a base treatment composition; and (d) adding a second acid to the base treatment composition in step (c) to obtain a polyamidoamine-epihalohydrin resin composition; wherein the polyamidoamine-epihalohydrin resin composition obtained in step (d) has less than about 700 ppm of dihalopropanol (DHP) and 3-halopropanediol (HPD).
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: July 22, 2014
    Assignee: Georgia-Pacific Chemicals LLC
    Inventors: Karla D. Favors, Clay E. Ringold, Yuping Luo, Cornel Hagiopol
  • Patent number: 8779087
    Abstract: The present invention provides an aliphatic polycarbonate production method which, using carbon dioxide and an epoxide, easily produces aliphatic polycarbonates having a low metal catalyst content. The invention relates to an aliphatic polycarbonate production method which includes a step of polymerization by reacting carbon dioxide with an epoxide in the presence of a metal catalyst; and a step of treating a polymer obtainable in the polymerization step with a surfactant. High-purity aliphatic polycarbonate having a low metal catalyst content can be easily provided by the aliphatic polycarbonate production method of the invention.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: July 15, 2014
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Nobutaka Fujimoto, Masafumi Okamoto
  • Patent number: 8716356
    Abstract: The present invention relates to novel polyazoles, a proton-conducting polymer membrane based on these polyazoles and its use as polymer electrolyte membrane (PEM) for producing membrane-electrode units for PEM-fuel cells, and also other shaped bodies comprising such polyazoles.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 6, 2014
    Assignee: BASF Fuel Cell GmbH
    Inventors: Gordon Calundann, Brian Benicewicz, Jochen Baurmeister
  • Patent number: 8507641
    Abstract: Provided herein are methods for preparing vinylidene-terminated polyolefins. Further provided herein are sulfide-terminated polyolefins.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: August 13, 2013
    Assignee: Chevron Oronite Company LLC
    Inventor: Casey D. Stokes
  • Patent number: 8470897
    Abstract: A process for devulcanizing crosslinked elastomer particles comprising applying an alternating electric field to a composition comprising crosslinked elastomer particles under compression. The alternating electric field preferably has a frequency between 1 and 100 MHz and a voltage between 1000 and 10,000 V, and may be applied between an apparatus that continuously conveys the particles through the field.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: June 25, 2013
    Assignee: Vertex L.L.C.
    Inventor: Michel Marc
  • Patent number: 8436197
    Abstract: The present invention is related to palladium complexes having substituted diarylideneacetone ligands and coupling and polymerization processes thereof.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: May 7, 2013
    Assignee: West Chester University of Pennsylvania of the State System of Higher Education
    Inventor: Felix E Goodson, III
  • Patent number: 8383760
    Abstract: Provided herein are methods for preparing vinylidene-terminated polyolefins. Further, provided herein are novel sulfide-terminated polyolefins of the formula: wherein R1 is a polyolefin group and R2 is hydrocarbyl; and methods for producing the same.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: February 26, 2013
    Assignee: Chevron Oronite Company LLC
    Inventor: Casey D. Stokes
  • Patent number: 8357726
    Abstract: A process for devulcanizing crosslinked elastomer particles comprising applying an alternating radio frequency dielectric field to a composition comprising crosslinked elastomer particles. The alternating radio frequency dielectric field preferably has a frequency between 1 and 100 MHz and a voltage between 1000 and 10,000 V.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: January 22, 2013
    Assignee: Vertex L.L.C.
    Inventor: Michel Marc
  • Patent number: 8338562
    Abstract: The invention relates to a biocompatible, non-biodegradable, and non-toxic polymer of formula (I), comprising of three monomeric units, selected from 1-Vinylpyrrolidone (VP), N-Isopropylacrylamide (NIPAM), and ester of Maleic anhydride and Polyethylene glycol (MPEG), cross-linked with a bi-functional vinyl derivative, of high purity and substantially free of respective toxic monomeric contaminants, and a process for preparation thereof. The invention further relates to nanoparticulate pharmaceutical compositions of poorly water-soluble drugs or compounds comprising the polymer of the invention, which are safe, less-toxic and convenient for bedside administration to patients in need thereof. Furthermore, the invention relates to a highly selective method for preparation of nanoparticulate pharmaceutical compositions of poorly water-soluble drugs or compounds.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: December 25, 2012
    Assignee: Fresenius Kabi Oncology Limited
    Inventors: Anand C. Burman, Rama Mukherjee, Dhiraj Khattar, Sanjoy Mullick, Manu Jaggi, Manoj Kumar Singh, Mukesh Kumar, Deepak Prusthy, Pawan Kumar Gupta, Rajendran Praveen, Shobhit Singh
  • Patent number: 8283438
    Abstract: A process for the preparation of functional molecules using the thiol-ene coupling reaction and a process for the preparation of protected functional thiols, specifically thioesters is provided. The methods may be used to make functional polymers and other molecules. The method of making a functionalized polymer using a thiol-ene reaction comprises: providing a functionalized thioester having the following formula: wherein R is a functional group and COR? is a protecting group; cleaving the functionalized thioester, forming a functional thiol and an acyl group; providing a polymer having a pendant vinyl group; and reacting the polymer with the functional thiol whereby a functionalized polymer is formed, wherein the functional thiol is not isolated prior to reacting with the polymer.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: October 9, 2012
    Assignee: California Institute of Technology
    Inventors: Ralph L. David, Julia A. Kornfield
  • Patent number: 8273850
    Abstract: Polyester compositions based on 1,3-propanediol and aromatic and aliphatic diacids that can contain a large fraction of biologically derived content are disclosed. Transesterification between polyesters in blends of such compositions is greatly reduced using phosphorous-containing additives. The blends have properties similar to poly(ethylene terephthalate).
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: September 25, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventor: Rameshchandra M. Gohil
  • Patent number: 8236367
    Abstract: The method comprises chemical modification of an optionally metallized polymer surface, for example a polycarbonate surface or a polymethacryllate surface functionalized with amino groups, said surfaces being optionally metallized, by treating said polymer surface with a mercaptoalkanoic acid or the salts or derivates thereof. The surfaces obtained by said method may be used as solid supports for immobilizing biomolecules, such as nucleic acids, proteins or membranes.
    Type: Grant
    Filed: December 26, 2008
    Date of Patent: August 7, 2012
    Assignee: Universidad Politecnica de Valencia
    Inventors: María del Carmen Bañuls Polo, Francisco García Piñón, Ángel Maquieira Catalá, Rosa Puchades Pla
  • Patent number: 8227555
    Abstract: The present invention is directed to conjugates of hydrolytically stabilized maleimide-functionalized water soluble polymers and to methods for making and utilizing such polymers and their precursors.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: July 24, 2012
    Assignee: Nektar Therapeutics
    Inventors: Antoni Kozlowski, Remy F. Gross, III, Samuel P. McManus
  • Patent number: 8198396
    Abstract: Methods of forming materials containing precursors to electrically conductive polymers and electrically conductive polymers are described which have a high degree of crystallinity. The high degree of crystallinity is achieved by preparing the materials under conditions which provide a high degree of mobility to the polymer molecules permitting them to associate with one another to form a crystalline state. High levels of electrical conductivity are achieved in in the electrically conductive materials without stretch orienting the material. The enhanced electrical conductivity is isotropic as compared to a stretch oriented film which has isotropic electrical conductivity. In the preferred embodiment, additives are added to a solution containing a solvent and the precursor or electrically conductive polymer. The additives are preferably plasticizer of diluents. As the solvent is removed the material dries and contains a higher degree of crystallinity than in the absence of the additive.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: June 12, 2012
    Assignee: International Business Machines Corporation
    Inventors: Marie Angelopoulos, Yun-Hsin Liao, Ravi F. Saraf
  • Patent number: 8133954
    Abstract: Provided herein are methods for preparing vinylidene-terminated polyolefins. Further, provided herein are novel sulfide-terminated polyolefins of the formula: wherein R1 is a polyolefin group and R2 is hydrocarbyl; and methods for producing the same.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: March 13, 2012
    Assignee: Chevron Oronite Company LLC
    Inventor: Casey D. Stokes
  • Patent number: 8129498
    Abstract: 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: Grant
    Filed: November 1, 2007
    Date of Patent: March 6, 2012
    Assignee: Battelle Energy Alliance, LLC
    Inventors: John R. Klaehn, Eric S. Peterson, Christopher J. Orme, Michael G. Jones, Alan K. Wertsching, Thomas A. Luther, Tammy L. Trowbridge
  • Patent number: 8110636
    Abstract: Improved multi-block sulfonated poly(phenylene) copolymer compositions, methods of making the same, and their use as proton exchange membranes (PEM) in hydrogen fuel cells, direct methanol fuel cells, in electrode casting solutions and electrodes. The multi-block architecture has defined, controllable hydrophobic and hydrophilic segments. These improved membranes have better ion transport (proton conductivity) and water swelling properties.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: February 7, 2012
    Assignee: Sandia Corporation
    Inventors: Cy H. Fujimoto, Michael Hibbs, Andrea Ambrosini
  • Patent number: 8101710
    Abstract: This invention relates to a process for preparing polyamine-epihalohydrin resins having reduced levels of residuals. The process comprises (a) charging a membrane separation apparatus with an aqueous composition comprising at least one polyamine-epihalohydrin resin, and (b) separating the aqueous composition into a permeate and a retentate by passing the aqueous composition through the membrane of the membrane separation apparatus. The retentate comprises at least one polyamine-epihalohydrin resin having lower levels of residuals on an equal active component basis than the aqueous composition of (a). The permeate comprises residuals removed from the aqueous composition of (a) and less than 5% by weight of the active component of said at least one polyamine-epihalohydrin resin. The polyamine-epihalohydrin resins having reduced levels of residuals can be used to make wet strength agents, dry strength agents, creping adhesives for paper products, curing agents for wood product adhesives, and other products.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: January 24, 2012
    Assignee: Hercules Incorporated
    Inventors: Richard J. Riehle, Stephen Vinciguerra
  • Patent number: 8075943
    Abstract: Objects of the present invention are to provide a purification process that enables Pd contained in an organic electronics material to be removed effectively, to provide an electroluminescent device middle layer material purified by the process, and to provide an electroluminescent device employing the middle layer material. The present invention relates to a process for purifying an organic electronics material, the process involving treating, with a phosphorus-containing material, an organic electronics material that contains Pd as an impurity so as to remove the Pd.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: December 13, 2011
    Assignees: Hitachi Chemical Co., Ltd., Maxdem Incorporated
    Inventors: Yoshihiro Tsuda, Yoshii Morishita, Satoyuki Nomura, Yousuke Hoshi, Shigeaki Funyuu, Farshad J. Motamedi, Li-Sheng Wang
  • Patent number: 8063174
    Abstract: 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: Grant
    Filed: November 1, 2007
    Date of Patent: November 22, 2011
    Assignee: Battelle Energy Alliance, LLC
    Inventors: John R. Klaehn, Eric S. Peterson, Christopher J. Orme, Michael G. Jones, Alan K. Wertsching, Thomas A. Luther, Tammy L. Trowbridge
  • Patent number: 8053607
    Abstract: A method for producing a polyether-polyol having a narrow molecular weight distribution, which comprises carrying out selective fractional extraction of the low-molecular weight component from a polyether-polyol (A) having an average molecular weight of from 500 to 4500 represented by formula (1): HO—[(CH2)4O]n—[(CR1R2)pO]q—H??(1) wherein R1 and R2, which may be the same or different, each represents a hydrogen atom or a linear or branched alkyl group having from 1 to 5 carbon atoms; n indicates a positive integer; p indicates an integer of from 1 to 8; and q indicates 0 or a positive integer, by the use of an aqueous solution (C) containing from 15 to 70 wt % sulfuric acid at a room temperature to 100° C., to thereby suitably determine the amount of the aqueous sulfuric acid solution to the overall organic layer and the sulfuric acid concentration in accordance with the molecular weight and molecular weight distribution of the intended polyether-polyol to be fractionally extracted.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: November 8, 2011
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Kazuaki Okabe, Hiroshi Nakaoka, Ikuhiko Kanehira
  • Patent number: 7999061
    Abstract: A catalytic lactide and glycolide copolymerization system comprising a trifluoromethane sulfonate as a catalyst and copolymerization additive and a copolymerization process.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: August 16, 2011
    Assignee: IPSEN Pharma S.A.S.
    Inventors: Blanca Martin-Vaca, Anca Dumitrescu, Lidija Vranicar, Jean-Bernard Cazaux, Didier Bourissou, Roland Cherif-Cheikh, Frédéric Lacombe
  • Patent number: 7999066
    Abstract: 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: Grant
    Filed: February 12, 2007
    Date of Patent: August 16, 2011
    Assignee: Evonik Roehm GmbH
    Inventors: Sven Balk, Gerd Loehden, Christine Miess, Christine Troemer, Monika Maerz
  • Patent number: 7973109
    Abstract: A process for producing a crosslinked type or non-crosslinked type layered metal phosphonate compound including a reaction step of reacting two or more members selected from organic diphosphonic acids or monophosphonic acids, or derivatives thereof having predetermined conditions and a metal source capable of forming an ion of a hexacoordinate metal atom as a central atom (M) of a metal oxide octahedron upon reaction under the presence of a sulfuric acid catalyst, a crosslinked or non-crosslinked metal phosphonate compound obtained by the process, as well as a stock solution used for the synthesis of the crosslinked or non-crosslinked type layered metal phosphonate compound described above.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: July 5, 2011
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Shin-ichi Ogata, Yoshiaki Fukushima, Masaya Kawasumi
  • Patent number: 7951878
    Abstract: The invention relates to a method for preparing halogen-free flameproof epoxy resins, in which a halogen-free epoxy resin is reacted with a polyfunctional aldehyde or ketone and a phosphinic acid derivative, wherein the phosphinic acid derivative contains at least one P—H-active structural unit of the formula ?PH(O) and is used in an amount equivalent to the polyfunctionality of the aldehyde or ketone, to a halogen-free flameproof epoxy resin obtainable by this method, to the use of the epoxy resin as a base material for the manufacture of printed circuit boards and printed circuits and to intermediates used to prepare the epoxy resins.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: May 31, 2011
    Assignee: Schill + Seilacher “Struktol” Aktiengesellschaft
    Inventors: Berthold Just, Holger Keller, Manfred Doering, Uwe Storzer, Sebastian Seibold
  • Patent number: 7932349
    Abstract: This invention relates to a process for preparing polyamine-epihalohydrin resins having reduced levels of residuals. The process comprises (a) charging a membrane separation apparatus with an aqueous composition comprising at least one polyamine-epihalohydrin resin, and (b) separating the aqueous composition into a permeate and a retentate by passing the aqueous composition through the membrane of the membrane separation apparatus. The retentate comprises at least one polyamine-epihalohydrin resin having lower levels of residuals on an equal active component basis than the aqueous composition of (a). The permeate comprises residuals removed from the aqueous composition of (a) and less than 5% by weight of the active component of said at least one polyamine-epihalohydrin resin. The polyamine-epihalohydrin resins having reduced levels of residuals can be used to make wet strength agents, dry strength agents, creping adhesives for paper products, curing agents for wood product adhesives, and other products.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: April 26, 2011
    Assignee: Hercules Incorporated
    Inventors: Richard J. Riehle, Steven Vinciguerra
  • Patent number: 7923518
    Abstract: 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: Grant
    Filed: February 14, 2008
    Date of Patent: April 12, 2011
    Assignee: LANXESS Deutschland GmbH
    Inventor: Werner Obrecht
  • Patent number: 7897720
    Abstract: 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: Grant
    Filed: November 7, 2007
    Date of Patent: March 1, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Cheol Yoon, Hye-Young Jung, Sung-Ho Chun
  • Patent number: 7872093
    Abstract: A process for producing a polythiourethane resin which comprises (A) a step of synthesizing a polythiol oligomer having disulfide bond by reaction of a polythiol compound having a functionality of two or greater and sulfur and (B) a step of bringing the polythiol oligomer obtained in step (A) and a compound having poly(thio)isocyanate groups into reaction with each other, wherein step (A) is conducted in the absence of solvents using no catalysts or a catalyst substantially inert to the compound having poly(thio)isocyanate groups. A polythiol oligomer exhibiting a greater refractive index than that of the polythiol compound having a functionality of two or greater used as the starting material is produced at a low cost, and a process for producing a practically useful polythiourethane resin exhibiting a stable great refractive index and a great Abbe number is provided.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: January 18, 2011
    Assignee: Hoya Corporation
    Inventor: Masahisa Kousaka
  • Patent number: 7868131
    Abstract: 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: Grant
    Filed: August 23, 2006
    Date of Patent: January 11, 2011
    Assignee: Enzon Pharmaceuticals, Inc.
    Inventors: Hong Zhao, Belen Rubio, Jing Xia
  • Patent number: 7858731
    Abstract: The invention embraces polyester resins and containers that include surface-modified talc. The invention also embraces a method for the late introduction of surface-modified talc via a reactive carrier to achieve a polyester resin that is capable of being formed into low-haze, high-clarity bottles possessing reduced coefficient of friction.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: December 28, 2010
    Assignee: Wellman, Inc.
    Inventors: Walter Lee Edwards, Carl Steven Nichols, Robert Joseph Schiavone, Sharon Sue Griffith, Tony Clifford Moore
  • Publication number: 20100311943
    Abstract: The invention relates to a method enabling the ambient-temperature spinning of ligning originating from Alcell- and Organosolv-type extraction processes. The invention also relates to a method and device for the ambient-temperature production of lignin fibres of micro- and nanometric diameter, by means of electrospinning and co-electrospinning. The resulting fibres can be single strand (electrospinning) and hollow or coaxial (co-electrospinning) fibres. The lignin fibres are transformed into carbon nanofibres after a suitable heat treatment.
    Type: Application
    Filed: November 25, 2008
    Publication date: December 9, 2010
    Inventors: Manuel Lallave Rivas, Thomas Cordero Alcantara, Jose Rodriquez Mirasol, Ignacio Gonzales Loscertales, Antonio Barrero Ripoll
  • Publication number: 20100311638
    Abstract: A process for altering the shape of a polymer particle is disclosed. The process comprises suspending polymer particles in a suspending medium at a temperature that effects melting of the polymer and agitating the suspension for a time sufficient to change the shape of the particles. The shape altered particles are combined with a pharmaceutically acceptable agent to give a drug delivery particle system.
    Type: Application
    Filed: October 27, 2006
    Publication date: December 9, 2010
    Inventor: Paul Tiege
  • Patent number: 7838569
    Abstract: The present invention relates to a method of surface cross-linking superabsorbent polymer particles using UV irradiation. The superabsorbent polymer particles for use in the method of the present invention have a relatively high degree of neutralization. Bronsted acids are selectively applied onto the surface of the superabsorbent polymer particles to selectively facilitate a relatively high number of protonated carboxyl groups at the surface of the superabsorbent polymer particles while the relatively high degree of neutralization in the core of the superabsorbent polymer particles remains substantially unaffected.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: November 23, 2010
    Assignee: Nippon Shokubai Co., Ltd
    Inventors: Andreas Flohr, Torsten Lindner, Yoshiro Mitsukami
  • Patent number: 7812115
    Abstract: The present invention relates to a method for preparing a high molecular weight latex resin powder, and more precisely, a method for preparing a high molecular weight latex resin powder which comprises the steps of preparing a slurry by coagulating a high molecular weight latex; stabilizing the slurry; and aging the stabilized slurry, and is characterized by the direct addition of a colloidal modifier to the high molecular weight latex reactant during the preparation of the slurry. According to the present invention, the high molecular weight latex resin powder prepared by the method of the present invention has excellent particle size distribution, apparent specific gravity, caking property and thermo-stability, even with high solid content, compared with the conventional slow coagulation, and at the same time the method has an advantage of reducing energy costs and waste water generation.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: October 12, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Kyung-sik Lim, Tae-gun Ahn, Sang-il Nam, Keun-hoon Yoo, Chan-hong Lee
  • Patent number: 7795372
    Abstract: 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: Grant
    Filed: August 14, 2003
    Date of Patent: September 14, 2010
    Assignee: BASF Fuel Cell GmbH
    Inventors: Joachim Kiefer, Gordon Calundann, Oemer Uensal, Jochen Baurmeister, Frauke Jordt
  • Patent number: 7772361
    Abstract: 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: Grant
    Filed: July 3, 2007
    Date of Patent: August 10, 2010
    Assignee: Battelle Energy Alliance, LLC
    Inventors: John R. Klaehn, Eric S. Peterson, Alan K. Wertsching, Christopher J. Orme, Thomas A. Luther, Michael G. Jones
  • Patent number: 7759449
    Abstract: 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: Grant
    Filed: October 8, 2004
    Date of Patent: July 20, 2010
    Assignee: Wellman, Inc.
    Inventors: Carl S. Nichols, Tony Clifford Moore
  • Patent number: 7754846
    Abstract: Disclosed are thermal processes for increasing polyareneazole inherent viscosities.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: July 13, 2010
    Assignees: E. I. du Pont de Nemours and Company, Magellan Systems International, LLC
    Inventors: Qinghong Fu Adkins, Doetze Jakob Sikkema, Steven R. Allen, David J. Rodini
  • Patent number: 7687601
    Abstract: 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: Grant
    Filed: October 3, 2006
    Date of Patent: March 30, 2010
    Assignee: Headwaters Technology Innovation, LLC
    Inventors: Changkun Liu, Bing Zhou