With Distilling Or Pressured Reduction Step To Remove Material, E.g., Flashing, Autorefrigeration, Etc. Patents (Class 528/501)
  • Patent number: 10759880
    Abstract: A process for producing a polymer composition comprising the steps (A) to (M) as recited herein, involving the polymerization, in a polymerization reactor of a first polymer, a first stream thereof being passed into a first separator wherein a first liquid phase comprising the polymer and a first vapor phase coexist; withdrawing a first vapor stream and a first concentrated solution stream comprising the polymer from the first separator, passing at least a part of the first vapor stream to a first fractionator; withdrawing a first overhead stream and a first bottom stream from the first fractionator; recovering at least a part of the first overhead stream as a first recycle stream and passing it to the polymerization reactor; passing the first concentrated solution stream from the first separator to a second separator, wherein a second liquid phase comprising the polymer and a second vapor phase coexist; passing at least a part of the second vapor stream to a second fractionator; withdrawing a second overhead
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: September 1, 2020
    Assignee: Borealis AG
    Inventors: Mohammad Al-Haj Ali, Erik Eriksson, Guhan Mathivanan, Henry Sleijster, Sameer Vijay, Christof Wurnitsch, Samuli Zitting
  • Patent number: 10675845
    Abstract: The present invention relates to a biodegradable sheet comprising at least two polymer layers, wherein a first polymer layer comprises a mixture of at least two different biodegradable polymers selected from the group consisting of PLA, PCL, PBS and PBSA; and wherein a second polymer layer comprises a biodegradable polymer selected from the group consisting of PBS, PBSA, a mixture of PLA and PBS, and a mixture of PLA and PBSA.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: June 9, 2020
    Assignee: Tipa Corp. Ltd.
    Inventors: Tal Neuman, Nili Konieczny, Itai Pelled
  • Patent number: 10604595
    Abstract: A process for withdrawing polyolefins from a reactor includes: continuously withdrawing a liquid solution stream from a solution polymerization reactor and passing the liquid solution stream into a low pressure separator; withdrawing a first vapour stream and a first liquid stream from the separator and passing the first vapour stream into a washing column; withdrawing a second vapour stream from the washing column and feeding it via a condenser line to a condenser; cooling the second vapour stream in the condenser so that part of the second vapour stream condenses, producing a condensed second vapour stream and an uncondensed second vapour stream; passing the condensed second vapour stream to an upper part of the washing column via a reflux line; withdrawing a second liquid stream from the washing column and passing at least part of the second liquid stream to the separator via a recycling line; and recovering heat.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: March 31, 2020
    Assignee: BOREALIS AG
    Inventors: Mohammad Al-Haj Ali, Erik Eriksson, Sameer Vijay, Guhan Mathivanan, Jukka Rasanen, Henry Sleijster, Christof Wurnitsch, Samuli Zitting
  • Patent number: 10584185
    Abstract: Systems and methods for extracting useful by-products and natural rubber from non-Hevea rubber bearing plants are disclosed.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: March 10, 2020
    Assignee: KULTEVAT, INC.
    Inventors: Anthony Nocera, Jr., Daniel R. Swiger
  • Patent number: 10556971
    Abstract: A method for controlling the temperature of the inner surface of a transfer line dryer, and thus controlling the temperature of a polymer product flowing through the transfer line dryer, is explained. Also provided is a transfer line dryer apparatus that is useful for implementing the disclosed method.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: February 11, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Kevin W. Lawson
  • Patent number: 10435488
    Abstract: A method of processing a polymerization reactor effluent stream comprising utilizing a separation system that removes greater than 99% of the fine polymer particles in the polymerization reactor effluent, wherein the separation system is a bag filter system, and wherein the bag filter is designed and operated to minimize the time required for shutdowns and equipment cleaning.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: October 8, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventor: Bryan M. Garner
  • Patent number: 9480933
    Abstract: A process for thermal separation of a solution comprised of a thermoplastic polymer and a solvent involves heating a solvent under pressure above a critical point of the solvent; decompressing the heated solvent in a first vessel, such that a polymer-rich and a low-polymer phase form; and supplying the polymer-rich phase to a second vessel. In embodiments, on entry into the second vessel, a pressure jump occurs, the pressure jump leading to a thermal flash in the second vessel such that a polymer part of the polymer-rich phase rises to at least 70%, and a resulting polymer-rich solution is provided.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: November 1, 2016
    Assignee: LIST HOLDING AG
    Inventors: Daniel Witte, Thomas Isenschmid, Manuel Steiner
  • Patent number: 9283525
    Abstract: The present invention aims to provide a porous polymer membrane that is excellent not only in water permeability and alkali resistance but also in mechanical strength. The porous polymer membrane of the present invention includes a fluoropolymer (A) that includes a vinylidene fluoride unit and a tetrafluoroethylene unit.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: March 15, 2016
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuko Shiotani, Yoshito Tanaka, Jun Miki
  • Patent number: 9243082
    Abstract: Process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators at pressures in the range of from 110 MPa to 500 MPa and temperatures in the range of from 100° C. to 350° C. in a continuously operated polymerization apparatus, wherein the reaction gas composition is compressed to the polymerization pressure by at least two sequentially operating compressors in which a low-pressure compressor first compresses the reaction gas composition to a pressure of from 10 MPa to 50 MPa and a high-pressure compressor then further compresses the reaction gas composition to the polymerization pressure wherein the high-pressure compressor is operated with a polyalkylene glycol based synthetic lubricant and oxygen is introduced into the fresh gas feed or into the polymerization apparatus in an amount that the gas composition to be compressed in the high-pressure compressor has an oxygen content in the range of from 0.01 ppm to 0.9 ppm.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: January 26, 2016
    Assignee: Basell Polyolefine GmbH
    Inventors: Klaus Berhalter, Andrei Gonioukh, Thomas Herrmann, David Finotto, Gilles Rieu, Laurent Hautier, Christoph Treis
  • Patent number: 9187383
    Abstract: A process for component separation in a polymer production system, comprising separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane and unreacted ethylene, distilling the gas stream into a light hydrocarbon stream, wherein the light hydrocarbon stream comprises ethane and unreacted ethylene, contacting the light hydrocarbon stream with an absorption solvent system, wherein at least a portion of the unreacted ethylene from the light hydrocarbon stream is absorbed by the absorption solvent system, and recovering a waste gas stream from the absorption solvent system, wherein the waste gas stream comprises ethane, hydrogen, or combinations thereof.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: November 17, 2015
    Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Scott E. Kufeld, John D. Hottovy, Ai-fu Chang
  • Patent number: 9180414
    Abstract: A fluoropolymer including a vinylidene fluoride unit, a tetrafluoroethylene unit, and a unit represented by the following formula (1): —CHX1—CX2(OR)—??(1) wherein one of X1 and X2 is a hydrogen atom, and the other is a fluorine atom; and R is a hydrogen atom or a C1-C8 alkyl group.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: November 10, 2015
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuko Shiotani, Yoshito Tanaka, Jun Miki
  • Patent number: 9134064
    Abstract: A system and method of use of same for cooling process vessels, particularly those having reactor beds inside such as hydrotreaters, hydrocrackers, and catalytic reformers as part of processing units, during unit turnarounds. While the process vessel is in normal operation or in a preliminary cool down phase, quench gas flow is routed through a bypass flow path while a recirculating gas cooling system is installed in the primary flow path, requiring no unit downtime. During a turnaround, the process vessel temperature is lowered to a desired temperature, permitting entry and replacement of catalyst inventory, using the existing hydrogen recirculating (recycle gas) compressor to circulate a recirculating gas stream through the recirculating gas cooling system, the process vessel, and back through the compressor and recirculating gas cooling system. The cooling system removes heat from the circulating flowstream, thus lowering the process vessel temperature, faster than cold nitrogen injection methods.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: September 15, 2015
    Assignee: Aggreko, LLC
    Inventor: Umesh Mathur
  • Patent number: 9023983
    Abstract: The invention is directed to an extruder (10), particularly for extruding a synthetic rubber product, which comprises a barrel (24), one or several extruder elements (12, 14), particularly one or several extruder screws and/or a kneader elements (14), arranged inside the barrel (24) for conveying the product, optionally an inlet port for feeding a stripping agent into the barrel (24) and an outlet port for removing volatile compounds from the product and, where applicable, the stripping agent. According to the invention a perforated die plate (26) is fixed to the barrel (24) in flow direction before the outlet port. Since the die plate (26) is not fixed to the extruder elements (12, 14) but to the barrel (24) a circumferential clearance between the die plate (26) and the barrel (24) is prevented so that no extruded material is passing the die plate (26) radially outside.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: May 5, 2015
    Assignee: LANXESS Deutschland GmbH
    Inventors: Hanns-Ingolf Paul, Udo Wiesner, Jörg Kirchhoff, Thomas König, Klemens Kohlgrüber
  • Patent number: 8993709
    Abstract: The present invention relates to a process for the preparation of oxymethylene polymers, the oxymethylene polymers obtained therefrom as well as their use.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: March 31, 2015
    Assignee: Ticona GmbH
    Inventors: Michael Hoffmockel, Michael Haubs, Jeurgen Lingnau, Horst Roeschert
  • Patent number: 8975361
    Abstract: The present invention relates to water and solvent-free polymers, in particular water and solvent-free synthetic rubber products like styrene butadiene rubber products and butadiene 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: March 23, 2011
    Date of Patent: March 10, 2015
    Assignee: LANXESS Deutschland GmbH
    Inventors: Wolfgang Krumbe, Rolf Feller, Paul Wagner, Hanns-Ingolf Paul, Martin Siebuerger, Heike Kloppenburg, Alicia Le-Sattler, John Lovegrove
  • Patent number: 8962792
    Abstract: A process for preparing an aliphatic or cycloaliphatic epoxy resin including the steps of: (I) reacting a mixture of (a) an aliphatic or cycloaliphatic hydroxyl containing material, (b) an epihalohydrin, (c) a basic acting substance, (d) a non-Lewis acid catalyst, and (e) optionally, a solvent, forming an epoxy resin composition; (II) subjecting the epoxy resin composition produced in step (I) to a separation process to remove (A) “light” components such as, for example, solvent used in the epoxidation reaction, if any, unreacted epihalohydrin, and co-products such as di(epoxypropyl)ether; (B) unreacted aliphatic or cycloaliphatic hydroxyl containing material, if any; (C) partially epoxidized aliphatic or cycloaliphatic hydroxyl containing material, such as, for example, MGE; (D) fully epoxidized aliphatic or cycloaliphatic hydroxyl containing material, such as, for example, DGE, such that the (E) aliphatic or cycloaliphatic polyfunctional epoxy resin product remaining contains no more than 50% by weight of s
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: February 24, 2015
    Assignee: Dow Global Technologies LLC
    Inventor: Robert E. Hefner, Jr.
  • Patent number: 8859720
    Abstract: The present invention relates to a method for preparing polyarylene sulfide, in which the polyarylene sulfide is prepared by a polymerization reaction of reactants including a diiodo aromatic compound and a sulfur compound, the method including: further adding 0.01 to 10.0 wt. % of diphenyl disulfide with respect to the weight of the polyarylene sulfide to the reactants to form the polyarylene sulfide having a melting point of 265 to 320° C. The diphenyl disulfide included in the reactants according to the present invention costs far less than other conventional polymerization inhibitors to dramatically lower the production cost, and the polyarylene sulfide prepared using the diphenyl disulfide exhibits low iodine content and very excellence in thermal stability.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: October 14, 2014
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Yong-Jun Shin, Jae-Bong Lim, Joon-Sang Cho, Il-Hoon Cha, Sung-Gi Kim
  • Patent number: 8853334
    Abstract: Process and apparatus for discharging polyolefin particles from a gas-phase polymerization reactor of a pressure from 1.0 MPa to 10 MPa to a discharge vessel of a pressure from 0.1 MPa to 1.0 MPa wherein the discharging is carried out discontinuously through at least two discharge lines in which the polyolefin particles are transported horizontally or upwards.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: October 7, 2014
    Assignee: Basell Polyolefine GmbH
    Inventors: Manfred Hecker, Paulus-Petrus Maria De Lange, Klaus Berhalter, Thomas Andreas Hora, Axel Hamann
  • Patent number: 8802795
    Abstract: Process for the preparation of a polyolefin polymer by continuously polymerizing one or more olefin monomers in suspension at temperatures of from 40° C. to 120° C. and pressures of from 0.1 to 10 MPa in the presence of a polymerization catalyst in at least one polymerization reactor, comprising a) withdrawing a suspension of solid polyolefin particles in a suspension medium from the polymerization reactor, wherein the suspension has a temperature of from 65° C. to 120° C.; b) feeding the suspension withdrawn from the polymerization reactor to a moderating vessel; c) keeping the suspension in the moderating vessel at a temperature of from 60° C. to 85° C. for a time sufficiently long that the mean residence time of the suspension in the moderating vessel is at least 5 min; d) withdrawing suspension from the moderating vessel; e) cooling the suspension withdrawn from the moderating vessel to a temperature of from 20° C. to 55° C.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: August 12, 2014
    Assignee: Basell Polyolefine GmbH
    Inventors: Gerhardus Meier, Reinhard Kuehl, Harald Prang, Michael Aulbach
  • Patent number: 8771523
    Abstract: A composition that has a low volatile organic compound (VOC) content and methods for producing compositions having a low VOC content. The composition, such as a solid ink and/or toner release oil composition, may include less than about 0.15% by weight VOCs that have a sufficient vapor pressure at the operating temperature of printing device to enter the gas phase at the operating temperature of the printing device.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: July 8, 2014
    Assignee: Xerox Corporation
    Inventors: Christopher Auguste Dirubio, William C. Dean, Jeffrey C. Shelton, Patricia A. Wang
  • Patent number: 8748562
    Abstract: A process for producing higher molecular weight polyester includes heating a polyester to form a melt, and applying and maintaining a vacuum of between about 5 mm and about 85 mm of mercury to the melt while passing bubbles of gas through the melt until molecular weight has increased. The process may involve esterification of a diacid component and a diol component at elevated temperature. After the acid functional groups have essentially reacted, a vacuum of about 5 mm of mercury or less was applied and excess diol stripped off during transesterification, thereby increasing molecular weight.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: June 10, 2014
    Assignee: AWI Licensing Company
    Inventors: Larry W. Leininger, Dong Tian
  • Patent number: 8710161
    Abstract: The present invention discloses a method for transforming a single reactor line into a double reactor line wherein the existing single reactor line is equipped with a flash tank for separating the solid polymer product from the flash vapor and wherein the vapor is sent to a system of at least two separating columns allowing the separation of its constituents into monomer, diluent and comonomer.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: April 29, 2014
    Assignee: Total Research & Technology Feluy
    Inventors: Louis Fouarge, Eric Duchesne
  • Patent number: 8703868
    Abstract: Ethanol is produced from methyl acetate by a hydrogenolysis reaction. The methyl acetate is produced as a byproduct during the conversion of a vinyl acetate polymer or copolymer to a polymer or copolymer of vinyl alcohol. By integrating the two processes, a valuable product, i.e. ethanol, is produced from a methyl acetate byproduct.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: April 22, 2014
    Assignee: Celanese International Corporation
    Inventor: Mark O. Scates
  • Patent number: 8697802
    Abstract: Acetic acid is converted to vinyl acetate monomer by a reaction with oxygen and ethylene. The vinyl acetate is polymerized to form a vinyl acetate polymer or copolymer, which is then reacted in a methanolysis reaction with methanol and base to form a polymer or copolymer of vinyl alcohol and a methyl acetate byproduct. Ethanol is produced from methyl acetate by a hydrogenolysis reaction. The hydrogenolysis reaction also produces methanol. At least a portion of this ethanol is converted to ethylene by a dehydration reaction. At least a portion of the ethylene produced in this dehydration reaction is recycled to react with acetic acid and oxygen to form vinyl acetate. By converting a byproduct and by recycle of compositions, a polymer or copolymer of vinyl alcohol is efficiently produced with minimal waste.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: April 15, 2014
    Assignee: Celanese International Corporation
    Inventor: Mark O. Scates
  • Patent number: 8597582
    Abstract: The present embodiments provide a system and method for separation within a polymer production process. Specifically, a flashline heater configured according to present embodiments may provide more time than is required for complete vaporization of liquid hydrocarbons that are not entrained within a polymer fluff produced within a polymerization reactor. Such extra time may allow for liquid hydrocarbons that are entrained within the polymer fluff to be vaporized.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: December 3, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: John D. Hottovy, Scott E. Kufeld
  • Patent number: 8557882
    Abstract: A method for preparing contaminated plastics ground into flakes, such as RPET or such polymers, having at least decontamination and SSP treatment steps, with at least one reactor, with heating to the process temperature taking place essentially outside the reactor. Also, a device for carrying out the method, and having at least one decontamination reactor and at least one SSP reactor, a device for heating plastic flakes to the process temperature being arranged upstream of the decontamination reactor. Also an SSP reactor having at least two individual reactors, and preferably between 3 and 7 individual reactors.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: October 15, 2013
    Assignee: Krones AG
    Inventors: Thomas Friedlaender, Thomas Rieckmann, Frank Marx
  • Patent number: 8557949
    Abstract: Process for the production of di- and poly(diamino diphenyl methane) comprising the steps of (a) reacting aniline and formaldehyde in the presence of an acid catalyst to produce a reaction mixture containing di- and polyamines; (b) neutralizing the reaction mixture containing di- and polyamines; (c) separating the neutralized reaction mixture into an organic phase containing di- and polyamines and an aqueous phase; (d) further treating the organic phase separated off in step (c) by (d1) washing with water followed by (d2) separating the washed mixture into an organic phase and an aqueous phase and (d3) further fractionation of the organic phase to produce purified di- and polyamines on the one hand and aniline/water on the other hand; (e) further treating the aqueous phase separated off in step (c) by (e1) washing with aniline followed by (e2) separating the washed mixture into an aqueous phase and an organic phase and (e3) further treatment of the aqueous phase to remove the aniline thereby leaving an efflu
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: October 15, 2013
    Assignee: Huntsman International LLC
    Inventors: Robert Carr, Johannes Lodewijk Koole, Willem Van Der Borden
  • Patent number: 8518212
    Abstract: Embodiments of the invention provide an apparatus or process for devolatilization of flowable materials (such as molten polymers with entrained or dissolved solvent or unreacted monomers or comonomers) using a plate heater having heating channels, the design or operation of which heating channels maintains the flowable material above its bubble point pressure during passage through a larger first zone and then induces flashing in, or downstream of, a smaller second zone of the heating channel. The apparatus enables a higher throughput per heating channel while achieving equivalent or better devolatilization, as compared to current devolatilization apparatus.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: August 27, 2013
    Assignee: Dow Globarl Technologies LLC
    Inventors: Craig S. Taylor, Ravindra S. Dixit, Robert P. Shirtum
  • Patent number: 8519093
    Abstract: A process for the continuous thermal treatment of mixed substances, especially of solutions, suspensions and emulsions, wherein the continuous treatment of the mixed substances is divided into a main vaporization and a degassing stage, in which instance the main vaporization and the degassing take place in each case takes place in a separate mixer-kneader.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: August 27, 2013
    Assignee: List Holding AG
    Inventors: Andreas Diener, Pierre-Alain Fleury, Thomas Isenschmid, Alfred Kunz, Alain Schwick, Manuel Steiner, Daniel Witte
  • Patent number: 8507643
    Abstract: A composition comprising glycerol and at least one cyclic oligomer of glycerol, a process for obtaining the composition, and its use in the manufacture of dichloropropanol and of derived products such as epichlorohydrin and epoxy resins.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: August 13, 2013
    Assignee: Solvay S.A.
    Inventors: Patrick Gilbeau, Bruno Jestin
  • Patent number: 8497345
    Abstract: The invention relates to an apparatus and a process for devolatilizing solvent-containing polycarbonate solutions. By employing the inventive apparatus, polycarbonates with low residual values of volatile constituents are produced from solvent-containing polymer melts, which improved optical properties, especially yellowness index, with the aid of an apparatus combination of a flash devolatilizer and a vented extruder.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: July 30, 2013
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Thomas König, Klemens Kohlgrüber, Johan Vanden Eynde, Ing Johan Vaes, Stefaan De Vos
  • Patent number: 8415402
    Abstract: A method for separating a polymer from carbon black in devulcanized rubber, the method comprising steps of inserting devulcanized rubber into a bath of a solvent, dissolving a polymer out of the devulcanized rubber and into a solution of the solvent and the polymer, removing the solution from the bath without disturbing an un-dissolved residue comprising carbon black, and recovering the un-dissolved residue.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: April 9, 2013
    Assignee: Rubreco Inc.
    Inventors: Brian Harrison, Hurdon Hooper, Ross Gilders, Leo Cheung, Matthew Ness
  • Patent number: 8394866
    Abstract: A method for preparing contaminated plastics ground into flakes, such as RPET or such polymers, having at least decontamination and SSP treatment steps, with at least one reactor, with heating to the process temperature taking place essentially outside the reactor. Also, a device for carrying out the method, and having at least one decontamination reactor and at least one SSP reactor, a device for heating plastic flakes to the process temperature being arranged upstream of the decontamination reactor. Also an SSP reactor having at least two individual reactors, and preferably between 3 and 7 individual reactors.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: March 12, 2013
    Assignee: Krones AG
    Inventors: Thomas Friedlaender, Thomas Rieckmann, Frank Marx
  • Patent number: 8389674
    Abstract: Disclosed are systems and methods for producing a polymer dispersion based on polychloroprene, comprising steps of polymerizing chloroprene to polychloroprene, adding the polycholoprene dispersion to a stripper column, and removing chloroprene from the polychloroprene dispersion.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: March 5, 2013
    Assignee: Lanxess Deutschland GmbH
    Inventors: Pascal Debayle, Peter Hoeltzenbein, Renke Mottweiler, Eberhardt Muller, Rainer Grafe, Christian Mahner-Wolfarth, Thomas-Oliver Neuner, Mesut Fidan, Marc Lagarde
  • Patent number: 8389673
    Abstract: An aryl composition includes aryl ether oligomers. These compositions may be prepared by reaction of one or more dihalobenzenes with one or more dihydroxybenzenes by an Ullman ether reaction. The oligomers may have two or more benzene rings and include terminal halogen, e.g., bromine (Br), or hydroxyl (OH) groups. These oligomers may be brominated to form flame retardant compositions for thermoplastic polymers.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: March 5, 2013
    Assignee: Chemtura Corporation
    Inventors: Larry D. Timberlake, Julia E. Holland
  • 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: 8338563
    Abstract: Method for purifying a solution of at least one plastic in a solvent, the said solution comprising insolubles, whereby the solution is purified using a centrifugal settler.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: December 25, 2012
    Assignee: Solvay (Societe Anonyme)
    Inventor: Bernard Vandenhende
  • Patent number: 8334325
    Abstract: The present invention relates to a method for preferentially breaking cross-links in a vulcanised rubber, thereby de-vulcanising the rubber, by the use of a supercritical fluid, such as carbon dioxide. The supercritical fluid maintained at an appropriate solubility parameter, swells the vulcanised rubber to a state of equilibrium swell. The cross links (3) become fully extended and under strain to hold the internal pressures caused by the solvent swelling affect of the supercritical gas. When equilibrium swell has been achieved, the pressure within the processing vessel is rapidly dropped to a level of not less than 60% of the level at which saturation took place, causing a degassing and expansion of the supercritical fluid that has been absorbed within the vulcanised rubber. The resulting three dimensional separation of the rubber molecules will put a further rapid strain on the cross links, causing them to break (7), thereby giving the affect of de-vulcanization.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: December 18, 2012
    Assignee: Rubber-Regen LLP
    Inventors: Michiel Jan Dees, Philip James Hough
  • Patent number: 8314205
    Abstract: The invention relates to a glycerol-based product comprising at least one nitrogen-containing compound and of which the total content of nitrogen-containing compound expressed as elemental nitrogen (N) is less than or equal to 1 g of nitrogen (N)/kg of product, to a process for obtaining glycerol, and to its use in the manufacture of dichloropropanol and of derived products such as epichlorohydrin and products derived from epichlorohydrin.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: November 20, 2012
    Assignee: Solvay (Societe Anonyme)
    Inventors: Patrick Gilbeau, Dominique Balthasart
  • Patent number: 8304459
    Abstract: The present invention relates to a method for preferentially breaking cross-links in a vulcanized rubber, thereby de-vulcanizing the rubber, by the use of a supercritical fluid, such as carbon dioxide. The supercritical fluid maintained at an appropriate solubility parameter, swells the vulcanized rubber to a state of equilibrium swell. The cross links become fully extended and under strain to hold the internal pressures caused by the solvent swelling affect of the supercritical gas. When equilibrium swell has been achieved, the pressure within the processing vessel is rapidly dropped to a predetermined level causing a degassing and expansion of the supercritical fluid that has been absorbed within the vulcanized rubber. The resulting three dimensional separation of the rubber molecules will put a further rapid strain on the cross links, causing them to break, thereby giving the affect of de-vulcanization.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: November 6, 2012
    Assignee: Rubber-Regen LLP
    Inventors: Philip J. Hough, Anthony N. Hough
  • Publication number: 20120264911
    Abstract: A method of treating a polymerization reactor effluent stream comprising recovering the reactor effluent stream from the polymerization reactor, flashing the reactor effluent stream to form a flash gas stream, separating the flash gas stream into a first top stream, a first bottom stream, and a side stream, wherein the side stream substantially comprises hexane, separating the first top stream into a second top stream and a second bottom stream, wherein the second bottom stream substantially comprises isobutene, and separating the second top stream into a third top stream and a third bottom stream; wherein the third top stream substantially comprises ethylene, and wherein the third bottom stream is substantially free of olefins.
    Type: Application
    Filed: April 12, 2011
    Publication date: October 18, 2012
    Applicant: Chevron Phillips Chemical Cpmpany LP
    Inventors: Andrew J. MILLS, Ralph W. ROMIG, Ji Xian X. Loh
  • Patent number: 8242237
    Abstract: A process for polymerizing olefins, comprising the steps of: (a) contacting in a dense-fluid-homogeneous-polymerization system (“PS”), >30 wt % C3+ olefins with: catalyst, activator, 0-50 mol % comonomer, and 0-40 wt % diluent/solvent, at a temperature > PS Tc and a pressure no lower than 1 MPa below the PS cloud point pressure and <200 MPa; (b) forming a reactor effluent comprising polymer-monomer mixture; (c) optionally heating the mixture (b); (d) collecting the mixture (b) in a separation vessel; (e) reducing the pressure to form a two-phase mixture where the pressure in the reactor is 7-100 MPa higher than the pressure in the separation vessel and the temperature in the separation vessel is > the polymer or above 80° C., whichever is higher; (f) separating the monomer-rich phase from the polymer-rich phase; (g) recycling the separated monomer-rich phase and recovering polymer from the polymer-rich phase.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: August 14, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Chris B. Friedersdorf, Patrick Brant, Gabor Kiss
  • Patent number: 8241459
    Abstract: A vessel header comprising a plurality of lateral flow tubes arranged in a parallel configuration and entering the vessel header through alternating header penetrations with a single header penetration per lateral flow tube. A method of increasing the throughput of a polymerization reaction comprising conducting the polymerization reaction in a reaction vessel comprising a plurality of lateral flow tubes arranged in a parallel configuration and entering the vessel header through alternating header penetrations with a single header penetration per lateral flow tube wherein the polymerization reaction displays an increase in throughput of 10% and a decrease in volatiles of from 5% to 10% when compared to a polymerization reaction carried out in a reaction vessel lacking a plurality of lateral flow tubes arranged in a parallel configuration and entering the vessel header through alternating header penetrations with a single header penetration per lateral flow tube.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: August 14, 2012
    Assignee: Fina Technology, Inc.
    Inventors: John Tomlinson, Roy Kennedy, Jose M. Sosa
  • Patent number: 8242234
    Abstract: An epoxy resin with amine functionality is manufactured continuously through a first reaction zone in which an epoxide-functional resin is made by ring-opening addition, a second reaction zone in which the resin is reacted with amine to make an epoxide-functional product, and a third reaction zone in which the epoxide functional product is reacted with amine to make the epoxy resin with amine functionality. In other embodiments, some amine may be added in the first reaction zone to produce an epoxide functional product, with elimination of the second reaction zone, or all of the amine reactant may be added in the first reaction zone to produce an amine functional product, with elimination of both the second and third reaction zones. Optionally, solvent may be removed in an evaporation zone and recycled into the continuous process and further zones may be included to incorporate crosslinker, additives, and to emulsify the resin.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: August 14, 2012
    Assignee: BASF Coatings GmbH
    Inventors: Charles L Tazzia, Marco A Villalobos, Paul J Harris
  • Patent number: 8217125
    Abstract: A process for producing polyolefins, which includes polymerizing at least one olefin monomer, separating at least a part of the reaction mixture, dividing the separated reaction mixture into a polymer-lean fraction and a polymer-rich fraction, and subjecting at least a part of the polymer-lean fraction to a purification step prior to recycling back to the polymerization of at least one olefin monomer. The obtained polyolefins particularly have a low content of volatile low molecular weight compounds, a low content of low-molecular weight polyolefin waxes and a low content of residues derived from the catalyst employed.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: July 10, 2012
    Assignee: Borealis Technology Oy
    Inventors: Amir Kiumars Karbasi, Esa Korhonen, Michiel Bergstra
  • Patent number: 8198392
    Abstract: The polymer degassing apparatus includes a barrel-shaped horizontal container 41 having a supply port 42 for supplying a reactant, a discharge port 43 for discharging a reactant, a stirring means 45 for stirring a reactant, and a degassing means for drawing a gas via a degassing port 44 of the horizontal container. The supply port is positioned below the molten liquid level of the reactant. A recovery container 37 that is connected to the degassing port for recovering a volatile substance in the gas and a vacuum pump 36 are provided. The stirring means includes a plurality of stirring rods 46 oriented along the same direction as the axis in the horizontal container and coupling members 47 for coupling the stirring rods along the same direction as the axis, provided that the coupling members are placed at a distance from the virtual rotation center of the stirring means.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: June 12, 2012
    Assignee: Hitachi Plant Technologies, Ltd.
    Inventors: Toshiaki Matsuo, Masayuki Kamikawa, Kenichiro Oka, Naruyasu Okamoto, Ryuji Kajiya
  • Patent number: 8188155
    Abstract: The present invention relates to a method for preferentially breaking cross-links in a vulcanized rubber, thereby de-vulcanizing the rubber, by the use of a supercritical fluid, such as carbon dioxide The supercritical fluid causes swelling of the said vulcanized rubber material, wherein the time of swelling is not more than 50% of the time required for full volume equilibrium swelling of the rubber in said supercritical fluid and the swelling is followed by a rapid reduction of the supercritical fluid pressure The cross links (3) become fully extended and under strain to hold the internal pressures caused by the solvent swelling affect of the supercritical gas When equilibrium swell has been achieved, the pressure within the processing vessel is rapidly dropped to a predetermined level causing a degassing and expansion of the supercritical fluid that has been absorbed within the vulcanized rubber The resulting three dimensional separation of the rubber molecules will put a further rapid strain on the cross l
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: May 29, 2012
    Assignee: Rubber-Regen LLP
    Inventors: Michiel Jan Dees, Philip James Hough
  • Patent number: 8183336
    Abstract: In a process for producing a poly(arylene sulfide) by polymerizing a sulfur source and a dihalo-aromatic compound in the presence of an alkali metal hydroxide in an organic amide solvent, the production process comprises washing a polymer obtained by the polymerization with a hydrophilic organic solvent containing water in a proportion of 1 to 30% by weight, thereby collecting a purified polymer, the content of nitrogen contained in an extract extracted by a mixed solvent containing 40% by weight of acetonitrile and 60% by weight of water from the purified polymer is at most 50 ppm on the basis of the weight of the polymer, and a poly(arylene sulfide), the content of nitrogen contained in an extract extracted by a mixed solvent containing 40% by weight of acetonitrile and 60% by weight of water from the purified polymer is at most 50 ppm on the basis of the weight of the polymer.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: May 22, 2012
    Assignee: Kureha Corporation
    Inventors: Hiroyuki Sato, Koichi Suzuki, Hirohito Kawama
  • Patent number: 8153757
    Abstract: A solution process for polymerizing one or more ?-olefins of formula CH2?CHR, where R is H or an alkyl radical C1-12, to produce a polyolefin soluble in the reaction medium, the process comprising: a) polymerizing said one or more ?-olefins in a solution phase in the presence of a polymerization catalyst and a inert solvent having a vapor pressure lower than 100 kPa at 20° C.; b) separating the produced polyolefin from the unreacted monomers and the inert solvent by means of a sequence of at least three volatilization chambers operating at a decreasing pressure, the second devolatilization chamber being operated at a pressure from 0.8 to 5 bar.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: April 10, 2012
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Nicolò Arich de Finetti, Daniele Bigiavi, Anna Fait
  • Patent number: 8153754
    Abstract: An equipment for producing polyhydroxycarboxylic acid, includes a ring-opening polymerization apparatus, a liquid phase devolatilizing apparatus, and a drying apparatus, wherein an indirect heat exchanger is connected to a vent gas discharge path of the liquid phase devolatilizing apparatus. The indirect heat exchanger captures a dispersed in-process substance containing hydroxycarboxylic acid cyclic dimers and transfers the substance to the ring-opening polymerization apparatus; a wet condenser and a hot well are connected to a vent gas discharge path of the indirect heat exchanger and that of the drying apparatus, respectively.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: April 10, 2012
    Assignee: Hitachi Plant Technologies, Ltd.
    Inventors: Masayuki Kamikawa, Toshiaki Matsuo, Naruyasu Okamoto, Kenichiro Oka, Takeyuki Kondo