Treating At O Deg C (32 Deg F) Or Below, Or At 200 Deg C (392 Deg F) Or Above Patents (Class 528/481)
  • Patent number: 10662288
    Abstract: A capped poly(arylene ether) copolymer having the formula wherein Y is a divalent linking group of the formula each occurrence of D is independently a group of the formula each occurrence of Z is independently of the formula and Q1a, Q1b, R1, R2, R3, R4, R5, z, x, y, e, Ra, Rb, Rc, Rd, Re, Wa, R, R?, and m are as defined herein.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: May 26, 2020
    Assignee: SABIC Global Technologies B.V.
    Inventors: Eylem Tarkin-Tas, Huseyin Tas
  • Patent number: 10597469
    Abstract: The present invention relates to a method for recovering ethylene and a vinyl-comonomer that is capable of improving the rate of recovery of unreacted monomers remaining after polymerization of ethylene and a vinyl-based comonomer and increasing process efficiency through the reduction of costs. Specifically, the method for recovering ethylene and a vinyl-comonomer includes: a step of polymerizing ethylene and a vinyl-based comonomer at a pressure of 1500 bar or more; a step of depressurizing the product obtained in the polymerization step including an ethylene-vinyl-based comonomer polymer, ethylene, and a vinyl-based comonomer to 0.1 bar to 5 bar; a step of adding ethylene to the product obtained in the polymerization step under the pressure of 0.1 bar to 5 bar; and a step of separating ethylene and a vinyl-based comonomer from the product obtained in the polymerization step to which the ethylene is added.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 24, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Dae Young Shin, Eun Jung Joo, Joon Ho Shin, Chang Hoe Heo, Sung Keun Jang
  • Patent number: 10377860
    Abstract: A polyetherimide manufactured by reaction of an alkali metal salt of a dihydroxy aromatic compound with a bis(halophthalimide) composition comprising, based on the weight of the bis(halophthalimide) composition, from more than 45 to less than 75 weight percent of a 3,3?-bis(halophthalimide), less than 10 weight percent of a 3,4?-bis(halophthalimide), and from more than 45 to less than 75 weight percent of a (4,4?-bis(halophthalimide.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: August 13, 2019
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventor: Matthew L. Kuhlman
  • Patent number: 10370466
    Abstract: Processing aid for aiding in orienting an extruded film layer including a preponderance, by weight, of a high crystalline polypropylene is a crystalline polypropylene wax. An oriented film layer including a blend of crystalline polypropylene wax and high crystallinity polypropylene homopolymer is part of the invention. The invention includes a method of forming an oriented film layer including a preponderance by weight of a high crystallinity polypropylene and includes the steps of blending a high crystallinity polypropylene with a crystalline polypropylene wax, directing the blend through an extruder to form a film layer and then orienting the film layer. The invention includes a biaxially oriented, multi-layer film including a base layer and at least one skin layer. The base layer includes a blend of crystalline metallocene catalyzed polypropylene wax and a high crystallinity polypropylene.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 6, 2019
    Assignee: TAGLEEF INDUSTRIES INC.
    Inventors: Anthony J. Denicola, Jr., Andrew F. Wilkie
  • Patent number: 10308794
    Abstract: Described herein are polymer compositions useful as a semiconductive layer suitable for cables. The polymer compositions include (a) a heterophasic copolymer of propylene, (b) a polar copolymer having a polar comonomer having polar groups, (c) a solid conductive filler, and optionally (d) a polyolefin functionalised with a mono- or polycarboxylic acid compound or a derivative of a mono- or polycarboxylic acid compound, wherein said compostion is not crosslinked by the addition of a crosslinking agent. Also described herein is a process for producing the polymer compositions as well as the use of the compositions thereof.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: June 4, 2019
    Assignee: Borealis AG
    Inventors: Thomas Steffl, Christer Svanberg, Katja Klimke, David Friel
  • Patent number: 9931608
    Abstract: A process for separating polymeric and gaseous components of a polymer-monomer mixture at a pressure of from 0.12 MPa to 0.6 MPa and a temperature of from 120° C. to 300° C. in a separation vessel is provided. The separation vessel has a vertically arranged cylindrical shape with a ratio of length to diameter L/D of from 0.6 to 10 and an inlet pipe capable of introducing the polymer-monomer mixture into the separation vessel which the inlet pipe extends vertically from the top of the separation vessel into the separation vessel. Further a process for preparing ethylene homopolymers or copolymers from ethylenically unsaturated monomers in the presence of free-radical polymerization initiators at temperatures from 100° C. to 350° C. and pressures in the range of from 110 MPa to 500 MPa comprising such a process for separating a polymer-monomer mixture is provided.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: April 3, 2018
    Assignee: Basell Polyolefine GmbH
    Inventors: Dieter Littmann, Georg Groos, Andre-Armand Finette, Michael Deuerling, Sven Wolfram, Juergen Mohrbutter, Danir Khayrullin, Claudio Fibla, Christoph Wolf
  • Patent number: 9752051
    Abstract: Compositions of arylene oligomers and certain curing agents are useful to provide arylene polymer coatings having improved mechanical properties when cured in an oxygen-containing atmosphere. Methods of curing such compositions are also provided.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: September 5, 2017
    Assignees: Rohm and Haas Electronic Materials LLC, Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Yerang Kang, Young Seok Kim, Peng-Wei Chuang, Christopher Gilmore, Tae Hwan Kim, Herong Lei
  • Patent number: 9512240
    Abstract: The present invention relates to water and solvent-free polymers, in particular water and solvent-free synthetic rubber products like non-halogenated and halogenated butyl rubber products as well as a process for the production thereof. The invention further relates to a device suitable to accomplish said process.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: December 6, 2016
    Assignee: LANXESS INTERNATIONAL SA
    Inventors: Jörg Kirchhoff, Werner Bäcker, Rolf Feller, Paul Wagner, John Lovegrove, Hanns-Ingolf Paul
  • Patent number: 9475899
    Abstract: The present invention pertains to a process for manufacturing a solid composite layer, said process comprising the following steps: (i) providing a mixture comprising: at least one functional fluoropolymer comprising at least one hydroxyl group [polymer (F)], at least one metal compound of formula (I) [compound (M)]: X4-mAYm wherein X is a hydrocarbon group, optionally comprising one or more functional groups, m is an integer from 1 to 4, A is a metal selected from the group consisting of Si, Ti and Zr, and Y is a hydrolysable group selected from the group consisting of an alkoxy group, an acyloxy group and a hydroxyl group, and at least one inorganic filler material [filler (I)] in an amount of from 50% to 95% by weight, with respect to the total weight of said polymer (F) and said filler (I); (ii) reacting at least a fraction of said hydroxyl group(s) of at least one polymer (F) with at least a fraction of said hydrolysable group(s) Y of at least one compound (M), so as to provide a fluoropolymer com
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: October 25, 2016
    Assignee: SOLVAY SPECIALTY POLYMERS
    Inventors: Marco Miele, Julio A. Abusleme, Ricardo Pieri
  • Patent number: 9296844
    Abstract: The present invention relates to a molded article comprising a polypropylene composition, wherein the polypropylene composition comprises comonomer units derived from ethylene in an amount of from 0.5 wt % to 35 wt %, and from at least one C5-12 alpha-olefin in an amount of from 1.0 mol % to 3.0 mol %, wherein the polypropylene composition has an amount of xylene solubles XS of from 20 wt % to 39 wt %, and the xylene solubles have an amount of ethylene-derived comonomer units of from 4.0 wt % to 70 wt %.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: March 29, 2016
    Assignee: Borealis AG
    Inventor: Kristin Reichelt
  • Patent number: 9272068
    Abstract: The disclosed process for producing a water-absorbing resin comprising: a polymerization step of polymerizing an aqueous unsaturated monomer; and a drying step of drying a particulated water-containing gel-liked crosslinked polymer, obtained in a finely crushing step during the polymerization or after the polymerization. In the process, the drying step is interrupted with a dryer kept in a heated state and thereafter the drying step is restarted.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: March 1, 2016
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Syuji Kanzaki, Sumio Okuda, Kunihiko Ishizaki, Satoshi Matsumoto
  • Patent number: 9061922
    Abstract: A method for processing wastewater and exhaust gas condensates from the polymerization of vinyl acetate and ethylene and optionally other comonomers in an aqueous medium by suspension or emulsion polymerization employs relieving pressure after completion of the polymerization of the polymerization batch and discharging the polymer dispersion. During the relieving, the gaseous phase is removed by means of a compressor. Optionally, the gaseous phase occurring during stripping is removed by the compressor and cooled by one or more heat exchangers before entry into the compressor. The liquid phases occurring in the compressor and optionally in the heat exchanger are separated from the gaseous phase and the liquid phases are given to a rectification column, and separated into a vinyl acetate monomer phase and a wastewater phase, and the vinyl acetate monomer phase is resupplied to polymerization.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: June 23, 2015
    Assignee: Wacker Chemie AG
    Inventors: Hans-Peter Weitzel, Bernhard Eckl, Dorothee Guenaltay
  • Patent number: 8921513
    Abstract: Methods for forming a low chlorine content washed polyarylene sulfide are described. Methods include washing a polyarylene sulfide that includes aryl halide endgroups with a solution that includes a disulfide compound. The solution can also include a catalyst and an organic solvent. During the disulfide wash, a nucleophilic substitution reaction occurs between the disulfide compound and aryl halides endgroups of the polyarylene sulfide. The nucleophilic substitution reaction is carried out at conditions to prevent chain scission of the polyarylene sulfide that includes the aryl halide endgroups. Compositions and products formed with the low chlorine content disulfide washed polyarylene sulfide are also described.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: December 30, 2014
    Assignee: Ticona LLC
    Inventors: Rong Luo, Xinyu Zhao
  • Patent number: 8859686
    Abstract: The present invention provides compositions of phosphorus acid group and methacrylic anhydride group containing telomeric copolymers of methacrylic acid having an as yet never achieved amount of more than 70 wt. %, or, preferably, 72 wt. % or more, and up to 99 wt. %, of methacrylic anhydride groups based on the total weight of polymerized methacrylic acid and/or salt units. The compositions enjoy higher thermal stability than was previously achieved and enable easer processing that does not require the removal of liquids or solvents.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: October 14, 2014
    Assignees: Rohm and Haas Company, Dow Global Technologies, LLC
    Inventors: Charles J. Rand, Sudhir M. Mulik, Thomas Oswald, C. D. Rodowski, Barry Weinstein
  • Patent number: 8840965
    Abstract: In various embodiments, provided are silicon-containing coatings; silicon-containing coatings comprising microstructures that are responsive to one or more stimuli; oxidized products of said silicon-containing coatings; bulk solids; oxidized solids and powders; methods of preparing such coatings, solids, and powders; and substrates comprising the provided coatings.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: September 23, 2014
    Assignee: Dow Corning Corporation
    Inventors: Dongchan Ahn, Jeremy M. Beebe
  • Patent number: 8816045
    Abstract: The present invention relates to a method of removing volatile organic compounds (VOCs) from a latex using a membrane.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: August 26, 2014
    Assignees: Dow Global Technologies LLC, Regents of the University of Minnesota
    Inventors: Timothy C. Frank, Edward L. Cussler
  • Patent number: 8809489
    Abstract: Methods for preparing active carbonate esters of water-soluble polymers are provided. Also provided are other methods related to the active carbonate esters of water-soluble polymers, as well as corresponding compositions.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: August 19, 2014
    Assignee: Nektar Therapeutics
    Inventors: Antoni Kozlowski, Jon McKannan, Samuel P. McManus
  • Patent number: 8796413
    Abstract: Provided are a method for producing a polymer material having a high degree of crystallization, a small variability in degree of crystallization, and a three-dimensionally isotropic crystallinity to thus give high thermal resistance, high isotropy of resin physical properties, and a small variability in resin physical properties; and the polymer material.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: August 5, 2014
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Hironori Tabata, Akira Nakasuga, Norihiro Asai
  • Patent number: 8791230
    Abstract: A method for reducing colored foreign substances in a water absorbent resin by a convenient and simple technique in the production of a water absorbent resin, without requiring any modification of raw materials or high capital investment, is provided. The method for producing a particulate water absorbent resin includes a step of polymerizing an aqueous solution of an unsaturated monomer; and a step of drying a particulate water-containing gel-like cross-linked polymer having a solids concentration of 30% by weight or greater that is obtainable in a gel grain refining step during polymerization or after polymerization, with one or more apparatuses for aerating a water absorbent resin with a high temperature gas stream being installed in the drying step and/or in at least one of the subsequent steps, while in the aerating apparatus, the high temperature gas stream is passed through a filter and then is reused in the same step as the step where the aerating apparatus is installed, or in a different step.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: July 29, 2014
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Satoshi Matsumoto, Syuji Kanzaki, Kazumasa Konishi
  • Patent number: 8785582
    Abstract: A vinyloxy group-containing vinyl polymer, useful as a heat or light curing reactive prepolymer, containing at least a constituent unit expressed by the following formula (I):
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: July 22, 2014
    Assignee: Nippon Carbide Industries Co., Ltd.
    Inventors: Takuma Hojo, Kyoko Yamamoto, Hiroki Fujiwara, Kazuhiko Atsumi, Take-aki Mitsudo
  • Patent number: 8765906
    Abstract: A water absorbent resin having less fine powder or powdery dust and a controlled particle size is provided, and the water absorption rate of the water absorbent resin is increased by a simple method at low cost, while maintaining or improving other physical properties such as liquid permeability.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: July 1, 2014
    Assignee: Nippon Shokubai, Co., Ltd.
    Inventors: Yusuke Watanabe, Kazushi Torii, Kozo Nogi, Kunihiko Ishizaki, Reiko Nakatsuru, Shigeru Sakamoto
  • Patent number: 8742066
    Abstract: The present invention relates to processes for recycling articles made from butyl ionomers and processes for producing recycled butyl ionomers. The invention further relates to composites comprising recycled butyl ionomers and fillers and articles made from recycled butyl ionomers. The invention also relates to uncured filled articles made from butyl ionomers having certain physical properties. Exemplary fillers include silica, carbon black, talc and clay, particularly onium substituted high aspect ratio nanoclays.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: June 3, 2014
    Assignee: LANXESS International S.A.
    Inventors: Dana Adkinson, Rayner Krista, Kevin Kulbaba
  • Patent number: 8716425
    Abstract: A method of improving the mechanical properties of polymers is described. The method involves heat treating the polymer at a temperature below the glass transition temperature in a wet or in a dry environment. Polymer articles capable of moisture uptake in humid environments, as well as polymer articles less susceptible to moisture uptake, have improved mechanical properties, particularly improved stress relaxation behavior and set properties, when treated in accord with the heat treatment method.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: May 6, 2014
    Assignee: Bay Materials, LLC
    Inventors: Ray F. Stewart, John G. Lahlouh
  • Patent number: 8691344
    Abstract: Blended fluoropolymer compositions are provided. In one embodiment, a liquid dispersion of a first fluoropolymer is blended with a liquid dispersion of a second fluoropolymer. The first fluoropolymer may be polytetrafluoroethylene (PTFE), such as a low molecular weight PTFE (LPTFE) that has been polymerized via a dispersion or emulsion polymerization process, and which has not been agglomerated, irradiated, or thermally degraded. The LPTFE may be in the form of an aqueous dispersion, having a mean particle size of less than 1.0 microns (?m), with the LPTFE having a first melt temperature (Tm) of 332° C. or less. The second fluoropolymer may be a melt processible fluoropolymer (MPF), such as methylfluoroalkoxy (MFA), fluorinated ethylene propylene (FEP), or perfluoroalkoxy (PFA), for example, in the form of an aqueous dispersion, and having a mean particle size of less than 1.0 microns (?m).
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: April 8, 2014
    Assignee: Whitford Corporation
    Inventors: Leonard W. Harvey, Michael Coates, Julie K. Wright
  • Patent number: 8664284
    Abstract: A method of depolymerizing formulated rubbers and polymer solids is described. The method utilizes a solvent at or above the solvent's critical pressure and critical temperature with a low ratio of solvent to the solid material. The resulting depolymerized material in either substantially solid or highly viscous liquid form can be repolymerized with the addition of more monomer.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: March 4, 2014
    Inventors: William A Farone, Tracy Palmer
  • Patent number: 8623963
    Abstract: High purity perfluoroelastomer composites and processes for producing the same are provided. High purity composites may be formed from compositions comprising a crosslinkable fluoroelastomer terpolymer of TFE, PAVE, and CNVE, and functionalized PTFE, which may be crosslinked to form crosslinked composites having low metal content and low compression set. Emulsion mixtures for forming the high purity composites are also provided.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: January 7, 2014
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Ping Xu, Jack Hegenbarth
  • Patent number: 8623994
    Abstract: With regard to a method for producing a water absorbent resin by drying a particulate hydrogel crosslinked polymer having a high solid content concentration (of 45% by weight or more, further 50% by weight or more, and particularly 55% by weight or more), to provide a method for efficient drying of a water absorbent resin having maintained/improved physical properties. A production method in which a through-circulation belt type dryer or a through-circulation stationary batch type dryer is used in the drying step and the drop and scatter ratio of a particulate hydrogel crosslinked polymer is set to 1% by weight or less.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: January 7, 2014
    Assignee: Nippon Shokubai, Co., Ltd.
    Inventors: Toshihiro Takaai, Shinichi Fujino, Hidenori Wada
  • Patent number: 8618226
    Abstract: A method for determining the styrene microblock content of a copolymer sample, the method comprising: (i) pyrolyzing the copolymer sample to form polymer fragments of the polymer sample; (ii) analyzing the fragments to determine the relative amounts of styrene monomer fragments, styrene dimer fragments, and styrene trimer fragments, where the relative amounts of the fragments include the amount of any given fragment relative to the total of the monomer fragments, dimer fragments, and trimer fragments; and (iii) using the relative amounts of the styrene monomer fragments, styrene dimer fragments, and styrene trimer fragments to predict the polystyrene microblock content from a mathematical model that is based upon the relative styrene monomer fragments, relative styrene dimer fragments, relative styrene trimer fragments, and microblock content of a copolymer having known microblock content.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: December 31, 2013
    Assignee: Bridgestone Corporation
    Inventors: Waruna Chethiya Bandara Kiridena, Mindaugas Rackaitis, Terrence Eugene Hogan, Dennis R. Brumbaugh, William L. Hergenrother
  • Patent number: 8613979
    Abstract: A composition includes a boron-containing hydrogen silsesquioxane polymer having a structure that includes: silicon-oxygen-silicon units, and oxygen-boron-oxygen linkages in which the boron is trivalent, wherein two silicon-oxygen-silicon units are covalently bound by an oxygen-boron-oxygen linkage therebetween.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: December 24, 2013
    Assignee: Cheil Industries, Inc.
    Inventors: Sina Maghsoodi, Shahrokh Motallebi, SangHak Lim, Meisam Movassat, Do-Hyeon Kim
  • Patent number: 8603681
    Abstract: The present invention relates to a novel porous film material which comprises at least one carbonaceous semimetal oxide phase, and to a process for production thereof. The invention also relates to the use of these porous film materials as a separator layer or for production of such separator layers in electrochemical cells, particularly in lithium cells and especially in lithium secondary cells.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: December 10, 2013
    Assignee: BASF SE
    Inventors: Nicole Hildebrandt, Arno Lange, Klaus Leitner, Phillip Hanefeld, Claudia Staudt
  • Patent number: 8603577
    Abstract: A process for preparing water-absorbing polymer particles by coating water-absorbing polymer particles with a particulate solid in a mixer, wherein the particulate solid is dispersed by means of a gas stream and the supply of the dispersed particulate solid in the mixer ends below the product bed surface.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: December 10, 2013
    Assignee: BASF SE
    Inventors: Holger Barthel, Martin Wendker, Reiner Witt
  • Patent number: 8563681
    Abstract: This invention provides a process for producing fine PPS resin particles and dispersion thereof by industrially applicable simple operation. This invention further provides very fine PPS resin particles, and furthermore provides fine PPS resin particles uniform in particle size. This invention is a process for producing fine polyphenylene sulfide resin particles comprising the following steps (a) and (b); (a) a step of heating a polyphenylene sulfide resin in an organic solvent, for obtaining a solution with the polyphenylene sulfide resin dissolved therein (dissolution step) (b) a step of flushing-cooling the aforementioned solution, for precipitating the fine particles of the polyphenylene sulfide resin (precipitation step).
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: October 22, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Kei Makita, Takae Ono, Toshiya Takahashi, Hiroaki Akasaka, Tomohiro Sakane
  • Patent number: 8530617
    Abstract: A process for producing silicon-containing particles having an extremely small particle diameter by a simple process without using surface-active agents or the like. The process is characterized by forming silicon-containing particles as a result of phase separation from an organic polymer, wherein the phase separation is achieved by an addition reaction, condensation reaction, ring-opening reaction, or a radical reaction of a curable silicon-containing compound or a curable composition that contains said compound, and the silicon-containing compound or the composition is maintained in a uniform liquid, fused, or dissolved phase with the organic polymer that is free of silicon and does not participate in the curing reaction of the silicon-containing compound or the composition.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: September 10, 2013
    Assignee: Dow Corning Toray Company, Ltd.
    Inventor: Yukinari Harimoto
  • Patent number: 8513364
    Abstract: A production method of a water-absorbent resin includes the steps of: obtaining a hydrogel by supplying monomer liquid to a reaction device so that the monomer liquid is polymerized; and detaching the hydrogel from the reaction device, wherein the reaction device's surface in contact with the monomer liquid at a position where polymerization occurs is made of a fluororesin having a melt viscosity of less than 1×108 poise at 380° C. On this account, it is possible to obtain a water-absorbent resin having less amounts of an extractable content with high productivity and it is possible to carry out continuous production for an extended period of time.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: August 20, 2013
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Masazumi Sasabe, Sumio Okuda, Yorimichi Dairoku, Shuji Kanzaki, Yoshihiro Kita, Motohiro Imura
  • Patent number: 8513379
    Abstract: The invention provides a depolymerization method for a polymer containing an ester bond in a main chain, by causing a solid acid catalyst to act on a polymer containing an ester bond in a main chain to depolymerize the polymer, thereby obtaining a re-polymerizable monomer and/or oligomer as a depolymerization product, and a method for producing a polymer containing an ester bond in a main chain, by polymerizing the re-polymerizable monomer and/or oligomer obtained by the depolymerization method.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: August 20, 2013
    Assignee: Keio University
    Inventor: Shuichi Matsumura
  • Patent number: 8513378
    Abstract: The present invention provides a method for producing a water-absorbing resin powder. The method includes a polymerization step, a drying step, a pulverization step, a classification step, and a surface cross-linking step. It further includes an additional step, performed before the surface cross-linking step, in which at least part of the classified polymer is supplied again to the same or a different pulverization step. The circulation pulverization ratio in the pulverization step is higher than 1.50.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: August 20, 2013
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Sayaka Machida, Kazushi Torii, Yoko Shirai, Hiroyuki Ikeuchi, Kunihiko Ishizaki
  • Patent number: 8466229
    Abstract: The present invention provides a composition for forming a silica-based film, the composition containing (a) a siloxane resin; (b) an organic solvent including at least one species of aprotic solvent; and (c) an onium salt.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: June 18, 2013
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Haruaki Sakurai, Koichi Abe
  • Patent number: 8466076
    Abstract: The present invention pertains to a process for producing unmeltable polysilane-polycarbosilane copolymers which are soluble in inert solvents, comprising the steps providing the product of a disproportionation of a methylchlorodisilane or a mixture of several methylchlorodisilanes of the composition Si2MenCl6-n, wherein n=1?4, wherein the disproportionation was carried out with a Lewis base as a catalyst, wherein this product is a chlorine-containing, crude polysilane/oligosilane containing hydrocarbon groups, and thermally postcrosslinking the crude polysilane/oligosilane to a polysilane-polycarbosilane copolymer, characterized in that the chlorine content of the polysilane-polycarbosilane copolymer is lowered by reacting the crude polysilane/oligosilane with a substitution agent, by which chlorine bound therein is replaced with a chlorine-free substituent. Green fibers and low-oxygen/oxygen-free ceramic fibers with a very low chlorine content can be produced using this process.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: June 18, 2013
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Arne Ruedinger, Juergen Clade, Heiko Spaniol, Dieter Sporn
  • Patent number: 8461295
    Abstract: Methods for preparing active carbonate esters of water-soluble polymers are provided. Also provided are other methods related to the active carbonate esters of water-soluble polymers, as well as corresponding compositions.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: June 11, 2013
    Assignee: Nektar Therapeutics
    Inventors: Antoni Kozlowski, Jon McKannan, Samuel P. McManus
  • Patent number: 8383703
    Abstract: A process is provided for producing discrete solid beads of polymeric material e.g. phenolic resin having a mesoporous structure, which process may produce resin beads on an industrial scale without aggregates of resin building up speedily and interrupting production. The process comprises the steps of: (a) combining a stream of a polymerizable liquid precursor e.g. a novolac and hexamine as cross-linking agent dissolved in a first polar organic liquid e.g. ethylene glycol with a stream of a liquid suspension medium which is a second non-polar organic liquid with which the liquid precursor is substantially or completely immiscible e.g. transformer oil containing a drying oil; (b) mixing the combined stream to disperse the polymerizable liquid precursor as droplets in the suspension medium e.g.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: February 26, 2013
    Assignee: British American Tobacco (Investments) Limited
    Inventors: Stephen Robert Tennison, Jonathan Robert Tunbridge, Roger Nicholas Place, Oleksandr Kozynchenko
  • Patent number: 8362198
    Abstract: There is provided a method for producing a resin particle capable of unprecedentedly realizing both excellent heat resistant keeping property and melting property. The present invention is a method for producing a resin particle (X) comprising the step of treating a resin particle (B) containing a resin (A) composed of a crystalline part (a) containing, as an essential constitutional component, a polyester (p1) not containing an aromatic ring or a polyester (p2) containing an aromatic ring, and produced by polycondensation of a polyol component and a polycarboxylic acid component, and a noncrystalline part (b), with liquid or supercritical carbon dioxide (C), and removing (C), wherein a heat of fusion measured by differential scanning calorimetry (DSC) of the obtained (X) satisfies the following relational formula (1): 0?H2/H1?0.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: January 29, 2013
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Yasuhiro Shindo, Sho Kim
  • Patent number: 8362197
    Abstract: There is provided a method for producing a resin particle capable of unprecedentedly realizing both excellent heat resistant keeping property and melting property. The present invention is a method for producing a resin particle (X) comprising the step of treating a resin particle (B) containing a resin (A) composed of a crystalline part (a) containing, as an essential constitutional component, a polyester (p1) not containing an aromatic ring or a polyester (p2) containing an aromatic ring, and produced by polycondensation of a polyol component and a polycarboxylic acid component, and a noncrystalline part (b), with liquid or supercritical carbon dioxide (C), and removing (C), wherein a heat of fusion measured by differential scanning calorimetry (DSC) of the obtained (X) satisfies the following relational formula (1): 0?H2/H1?0.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: January 29, 2013
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Yasuhiro Shindo, Sho Kim
  • Patent number: 8344190
    Abstract: Process for producing fluorinated olefins from fluorinated materials, the process comprising thermally decomposing the fluoropolymers into fluoroolefins in a reactor having a feeding zone where the fluorinated materials are fed into the reactor and a decomposition zone where the fluorinated materials are thermally decomposed and wherein the thermal decomposition is carried out in the presence of microwave irradiation.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: January 1, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Gunther J. Kaempf, Thomas Kolbeck, Tilman C. Zipplies, Monika A. Willert-Porada, Thorsten Gerdes, Achim Schmidt-Rodenkirchen
  • Patent number: 8344035
    Abstract: A process for making a carbonaceous material and a carbonous residue from scrap tires is disclosed. Tires are digested in an oil product. Steel and glass fibers are separated. A product enhancing additive comprising halogen based organic or inorganic compounds is added. The resulting carbonaceous material is then cured to create the final product. The produced carbonous residue is well suited for capture of mercury. The present invention has the benefits of providing a use for scrap tires that would otherwise require disposal in a landfill, and also produces a product useful for capturing a harmful element, thereby providing multiple environmental and economic benefits.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: January 1, 2013
    Assignee: Senergy LLC
    Inventors: Alfred G. Comolli, David L. Tanner
  • Patent number: 8329856
    Abstract: The present invention relates to a preparation method for a biodegradable polymer microparticle and a microparticle prepared by the method. More particularly, the present invention relates to a method for preparing a polymer microparticle, wherein the method includes the steps of: dissolving a biodegradable polyester-based polymer in DMSO (Dimethyl Sulfoxide); spraying the solution in a low temperature hydrocarbon solution to provide a frozen DMSO microparticle; adding the microparticle in a low temperature salt aqueous solution to dissolve DMSO; and removing salt. The present invention provides a method for preparing a novel polymer microsphere which can be injected through a syringe due to excellent physical properties (such as biocompatibility, biodegradability, porosity, mechanical strength) and the microcarrier's size-adjustability, and can be easily mass-produced.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: December 11, 2012
    Assignee: Regen Biotech Inc.
    Inventors: Gun Poong Kim, Yong Hoon Lee, Kun Pil Lee
  • Patent number: 8324339
    Abstract: Method and apparatus for thermally processing polyester pellets, e.g., polyethylene terephthalate pellets, in order to achieve a partial crystallization, whereby the polyester melt is fed to an underwater pelletizer and pelletized, the pellets obtained are fed to a water/solids separating device and the dried pellets are fed at a pellet temperature of greater than 100°C. to an agitation device that the pellets leave at a pellet temperature of over 100°C.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: December 4, 2012
    Assignee: Eastman Chemical Company
    Inventor: Theodor Bruckmann
  • Patent number: 8309681
    Abstract: There is provided a method for producing a resin particle capable of unprecedentedly realizing both excellent heat resistant keeping property and melting property. The present invention is a method for producing a resin particle (X) comprising the step of treating a resin particle (B) containing a resin (A) composed of a crystalline part (a) containing, as an essential constitutional component, a lactone ring-opening polymer (p), and a noncrystalline part (b), with liquid or supercritical carbon dioxide (C), and removing (C), wherein a heat of fusion measured by differential scanning calorimetry (DSC) of the obtained (X) satisfies the following relational formula (1): 0?H2/H1?0.9??(1) [in the relational formula (1), H1 represents a measurement value of a heat of fusion (J/g) at the time of the initial temperature elevation measured by DSC; and H2 represents a measurement value of a heat of fusion (J/g) at the time of the second temperature elevation measured by DSC].
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: November 13, 2012
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Takao Mukai, Koji Ota
  • Patent number: 8304457
    Abstract: A method and device for reprocessing used plastic containers, especially PET bottles, by analyzing the degree of contamination of the plastic, determining the decontamination process parameters as a function of the degree of contamination found in the analyzing step, and conducting a controlled decontamination of the plastic according to the decontamination process parameters thus determined. With this method and this device, it is thus possible to perform the decontamination process step in a controlled manner, yielding a more economical reprocessing method.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: November 6, 2012
    Assignee: Krones AG
    Inventors: Thomas Friedlaender, Maren Hofferbert, Hans-Jurgen Straubinger
  • Patent number: 8299135
    Abstract: Embodiments of the invention provide a process for processing post-consumer polymer. The polymer is contacted with a control medium having a carrier gas and a reactive vapor. Such a process is useful for processing post-consumer polymers with lower energy and reactants than with liquid reactants, and also promotes decontamination of the recycled polymer during the reaction.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: October 30, 2012
    Assignee: Bepex International, LLC
    Inventor: Girish Bhatt
  • Patent number: 8283437
    Abstract: The invention provides methods and systems for manufacturing low-acid polyalkylene terephthalate, for example, polybutylene terephthalate (PBT). The invention also provides methods and systems for preparing macrocyclic polyester oligomer (MPO) from low-acid polyalkylene terephthalate. Finally, the invention provides methods and systems for preparing MPO via reaction of a diol and a dialkyl ester in an organic solvent to form non-isolated, low-acid polyalkylene terephthalate which undergoes cyclization (depolymerization) to form MPO.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: October 9, 2012
    Assignee: Cyclics Corporation
    Inventors: Peter D. Phelps, Gary R. Faler