Two Or More Peroxide Compounds Patents (Class 526/228)
  • Patent number: 9908954
    Abstract: The present technology relates to a process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out in a continuously operated tubular reactor at temperatures from 100° C. to 350° C. and pressures from 180 MPa to 340 MPa, with a specific reactor surface area Asp of 2 m2/(t/h) to 5.5 m2/(t/h), and the tubular reactor has a specific ratio RDsp of 0.0050 MPa?1 to 0.0069 MPa?1 and an inner surface which has a surface roughness Ra of 2 ?m or less.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: March 6, 2018
    Assignee: Basell Polyolefine GmbH
    Inventors: Dieter Littmann, Jürgen Peter Mohrbutter, Giulia Mei, Andre-Armand Finette, Sven Georg Wolfram, Michael Deuerling, Danir Khayrullin, Georg Groos, Christoph Wolf
  • Patent number: 9758604
    Abstract: Disclosed is a method of preparing a vinyl chloride based resin by suspension polymerization to prevent foaming by slowly elevating reaction temperature such that pressure is maintained when pressure drops in a late stage of reaction. According to the method, the vinyl chloride based resin is prepared using suspension polymerizing vinyl chloride based monomers so as to reduce foaming and improve a protrusion, thermal stability and the like.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: September 12, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Kun Ji Kim, Yong Jin Kim, Kyung Hyun Kim
  • Patent number: 9631037
    Abstract: The present technology relates to a process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out in a continuously operated tubular reactor at temperatures from 100° C. to 350° C. and pressures from 180 MPa to 340 MPa, with a specific reactor surface area Asp of 2 m2/(t/h) to 5.5 m2/(t/h), and the tubular reactor has a specific ratio RDsp of 0.0050 MPa?1 to 0.0069 MPa?1 and an inner surface which has a surface roughness Ra of 2 ?m or less.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: April 25, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Dieter Littmann, Jurgen Peter Mohrbutter, Giulia Mei, Andre-Armand Finette, Sven Georg Wolfram, Michael Deuerling, Danir Khayrullin, Georg Groos, Christoph Wolf
  • Patent number: 9441057
    Abstract: The present technology relates to a process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out in a continuously operated tubular reactor at temperatures from 100° C. to 350° C. and pressures from 180 MPa to 340 MPa, with a specific reactor surface area Asp of 2 m2/(t/h) to 5.5 m2/(t/h), and the tubular reactor has a specific ratio RDsp of 0.0050 MPa?1 to 0.0069 MPa?1 and an inner surface which has a surface roughness Ra of 2 ?m or less.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: September 13, 2016
    Assignee: Basell Polyolefine GmbH
    Inventors: Dieter Littmann, Jurgen Peter Mohrbutter, Giulia Mei, Andre-Armand Finette, Sven Georg Wolfram, Michael Deuerling, Danir Khayrullin, Georg Groos, Christoph Wolf
  • Patent number: 8877871
    Abstract: There is provided a switching element including two electrodes and an organic bistable material sandwiched between the electrodes, which is expected to be applied to an organic memory element or the like. A switching element which includes: two electrodes; and an organic thin film containing a metal fine particle and interposed between the electrodes, and which exhibits such a current bistability that the switching element has two stable resistance values in response to a voltage applied, the switching element characterized in that the metal fine particle is dispersed in the organic thin film with a metal fine particle-dispersing agent containing a polymer having a dithiocarbamate group and having a weight average molecular weight of 500 to 5,000,000.
    Type: Grant
    Filed: September 1, 2008
    Date of Patent: November 4, 2014
    Assignees: Kyushu University, Nissan Chemical Industries, Ltd.
    Inventors: Katsuhiko Fujita, Kei Yasui, Masaaki Ozawa, Keisuke Odoi, Hisashi Ichikawa
  • Patent number: 8835575
    Abstract: A process for continuously producing water-absorbing polymer particles, wherein the monomer stems from at least two different sources and the monomer from one source differs from the monomer from at least one other source in the content of at least one secondary component.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: September 16, 2014
    Assignee: BASF SE
    Inventors: Wilfried Heide, Claus Hechler, Marc Gerardus Nicolas Grimmon, Filip Mees, Karl J. Possemiers
  • Patent number: 8557938
    Abstract: The invention relates to the preparation of branched fluoropolymers having long chain branches and little or no gels, by a process involving polymerization at high temperatures using persulfates and optionally multifunctional initiators. The invention also relates to gel-free, branched polymers with strain hardening produced by the process.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: October 15, 2013
    Assignee: Arkema Inc.
    Inventors: Lotfi Hedhli, Nafih Mekhilef
  • Patent number: 8470034
    Abstract: The material of the invention is obtained by radical polymerization from a mixture of acrylic and/or methacrylic monomers. The mixture further contains at least one transfer agent, preferably from the thiol family, that substantially enhances the flexibility of the polymer material thus obtained, and reduces the tackiness thereof. The polymer material thus obtained is intended for making ophthalmologic implants, and more particularly, intraocular lenses.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: June 25, 2013
    Assignee: Acrylian
    Inventor: Jean Terrisse
  • Patent number: 8283431
    Abstract: The invention pertains to a process to polymerize one or more monomers wherein at most 90% w/w of a safely useable amount of a first initiator is used and a second initiator is dosed at least after the start of the polymerization, in an amount such that essentially the full cooling capacity of the polymerization reactor is used, resulting in a cost efficient process to make polymers, particularly polymers comprising polymerized vinyl chloride.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: October 9, 2012
    Assignee: Akzo Nobel NV
    Inventors: Hans Westmijze, Lambertus Meulenbrugge, Koen Antoon Kornelis Vanduffel, Andreas Petrus Van Swieten
  • Patent number: 8093332
    Abstract: Disclosed are high impact polystyrenes prepared using mixed initiators. The mixed initiators include at least one grafting initiator and one non-grafting initiator. The high impact polystyrenes prepared therewith have a continuous polystyrene phase and dispersed therein particles of rubber predominantly having a honeycomb structure of rubber with polystyrene inclusions.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: January 10, 2012
    Assignee: Fina Technology, Inc.
    Inventors: Jose M. Sosa, Billy J. Ellis
  • Patent number: 8067514
    Abstract: An anisotropic conductive film is provided which can provide high bonding strength and good conduction reliability when anisotropic conductive bonding is made under the compression bonding conditions of a compression bonding temperature of at most 130° C. for a compression bonding time of at most 3 seconds. The anisotropic conductive film contains a polymerizable acrylic compound, a film-forming rein, conductive particles, and a polymerization initiator. The polymerization initiator contains two types of organic peroxides that do not produce oxygen gas resulting from the decomposition thereof and have different one-minute half-life temperatures. Of the two types of organic peroxides, one organic peroxide that has a higher one-minute half-life temperature produces benzoic acid or a derivative thereof when it decomposes.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: November 29, 2011
    Assignees: Sony Corporation, Sony Chemical & Information Device Corporation
    Inventors: Kouichi Miyauchi, Yasushi Akutsu, Yasunobu Yamada
  • Patent number: 8030415
    Abstract: A moisture crosslinkable thermoplastic composition is produced by a process of grafting an unsaturated silane of the formula: G1R1SiZ where G1 is vinyl, R1 is methyl and Z is a divalent hydrolyzable group under reactive mechanical working conditions and in the presence of at least two peroxides and subsequently is converted into a crosslinked thermoplastic composition by exposure to moisture in the presence of a crosslinking catalyst.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: October 4, 2011
    Assignee: Momentive Performance Materials, Inc.
    Inventor: Eric R. Pohl
  • Patent number: 7960470
    Abstract: Disclosed are a process for producing a polymer composition having a high solubility in a solvent, and a polymer composition.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: June 14, 2011
    Assignee: The Inctec Inc.
    Inventor: Tamayo Okahira
  • Publication number: 20100298513
    Abstract: A process for continuously producing water-absorbing polymer particles, wherein the monomer stems from at least two different sources and the monomer from one source differs from the monomer from at least one other source in the content of at least one secondary component.
    Type: Application
    Filed: January 26, 2009
    Publication date: November 25, 2010
    Applicant: BASF SE
    Inventors: Wilfried Heide, Claus Hechler, Marc Gerardus Nicolas Grimmon, Filip Mees, Karl J. Possemiers
  • Patent number: 7834110
    Abstract: The invention pertains to a process to polymerize one or more monomers wherein one or more initiators and optionally one or more surfactants are added to a polymerization mixture when the pressure in the polymerization reactor is dropping. This process allows a shorter polymerization time due to a higher pressure drop rate at the end of the polymerization reaction. Moreover, the cooling capacity of the polymerization reactor is used more efficiently.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: November 16, 2010
    Assignee: Akzo Nobel N. V.
    Inventors: Lambertus Meulenbrugge, Koen Antoon Kornelis Vanduffel, Hans Westmijze
  • Patent number: 7759438
    Abstract: The present invention relates to an aqueous dispersion polymerization process for preparing a (co)polymer wherein an organic peroxide is used as initiator (as a source of free radicals) during the polymerization process in conjunction with an effective amount of an organic peroxide stabilizing additive (controlling agent). The invention also relates to formulations comprising an organic peroxide and an effective amount of an organic peroxide stabilizing additive suitable for use in said polymerization process. The invention finally relates to 10 (co)polymers obtainable by the dispersion polymerization process.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: July 20, 2010
    Assignee: Akzo Nobel N.V.
    Inventors: Johannes Jacobus Theodorus De Jong, Johannes Willibrordus Antonius Overkamp, Andreas Petrus Van Swieten, Koen Antoon Kornelis Vanduffel, Hans Westmijze
  • Publication number: 20100160554
    Abstract: Disclosed are a process for producing a polymer composition having a high solubility in a solvent, and a polymer composition.
    Type: Application
    Filed: July 28, 2006
    Publication date: June 24, 2010
    Applicant: The Inctec Inc.
    Inventor: Tamayo Okahira
  • Patent number: 7741415
    Abstract: The present invention relates to an ethylene homo or copolymer characterized as having long chain branching, and having a molecular weight distribution, Mw/Mn, and a GPC-LALLS CDF, which satisfies the following relationship: y?0.0663x?0.015, wherein y=GPC-LALLS CDF and x=Mw/Mn measured by conventional GPC, a line drawn from where the LS chromatogram intersects with molecular weight 350,000 and molecular weight 1,150,000 has a positive slope, preferably with a melt index between 0.15 and 2000 g/10 minutes and having long chain branching. In addition, the invention relates to a free radical initiation polymerization process for the preparation of ethylene polymers or copolymers, comprising reacting ethylene and optionally one or more comonomers at a high pressure, conveniently between 13,000 psig and 100,000 psig, and at reactor temperatures of 115° C. to 400° C., preferably 125-400° C., more preferably 140-350° C., especially 165-320° C.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: June 22, 2010
    Assignee: Dow Global Technologies Inc
    Inventors: Christopher W. Conrad, David T. Gillespie, Christopher R. Eddy
  • Patent number: 7705112
    Abstract: The present embodiments relate to a novel method of making quaternary ammonium polymers comprising the steps of: a) mixing 1,4-bis-dimethylamino-2-butene, triethanolamine, water and an acid; and b) introducing a 1,4-dihalo-2-butene to the mixture so as to initiate a reaction resulting in the quaternary ammonium polymer.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: April 27, 2010
    Assignee: Abbott Medical Optics Inc.
    Inventor: Zhi Jian Yu
  • Patent number: 7604919
    Abstract: The photoresist monomer including an oxime group, a polymer thereof and a photoresist composition containing the same are disclosed. The photoresist monomer is represented by following Formula. In Formula, R* is independently a hydrogen or a methyl group, and R is a substituted or unsubstituted C1˜C25 alkyl group with or without an ether group, or a substituted or unsubstituted C4˜C25 hydrocarbon group including an aryl group, a heteroaryl group, a cycloalkyl group or a multicycloalkyl group with or without an ether group, a ketone group or a sulfur.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: October 20, 2009
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Deog-Bae Kim, Jung-Youl Lee, Geun-Jong Yu, Sang-Jung Kim, Jae-Woo Lee, Jae-Hyun Kim
  • Patent number: 7446074
    Abstract: The invention relates to highly concentrated aqueous emulsions of peroxides comprising an anti-freeze agent, a polyvinyl acetate with a degree of hydrolysis between 45 and 80%, and optionally a non-ionic surfactant with an HLB value greater than 10 selected from alkylene oxide block-copolymers, ethoxylated fatty alcohols, and ethoxyfated fatty acids. The emulsions have a low COD value and are safe, storage stable, and generally applicable.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: November 4, 2008
    Assignee: Akzo Nobel N.V.
    Inventors: Johannes Jacobus Theodorus De Jong, Boen Ho O, Hans Westmijze
  • Patent number: 7378034
    Abstract: The invention relates to an ionic compound corresponding to the formula [R1X1(Z1)-Q?-X2(Z2)-R2]m Mm+ in which Mm+ is a cation of valency m, each of the groups Xi is S=Z3, S=Z4, P—R3 or P—R4; Q is N, CR5, CCN or CSO2R5, each of the groups Zi is ?O, ?NC?N, ?C(C?N)2, ?NS(=Z)2R6 or ?C[S(=Z)2R6]2, each of the groups Ri, is Y, YO—, YS—, Y2N— or F, Y represents a monovalent organic radical or alternatively Y is a repeating unit of a polymeric frame. The compounds are useful for producing ion conducting materials or electrolytes, as catalysts and for doping polymers.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: May 27, 2008
    Assignees: Universite de Montreal, Centre National de la Recherche Scientifique, Institute of Organic Chemistry National Academy of Sciences of Ukraine
    Inventors: Michel Armand, Christophe Michot, Yurii Yagupolskii, Lev Yagupolskii, Andrej Bezdudny, Natalya Kondratenko
  • Publication number: 20080114134
    Abstract: In one embodiment herein there is provided a composition comprising (i) one or more unsaturated silane compounds according to the Formula (1): G1R1SiX1X2 ??(1) wherein G1 is an olefinically unsaturated hydrocarbon group optionally heteroatom-substituted with one or more oxygen and/or nitrogen atoms; R1 is selected from the group consisting of alkyl, aryl, aralkyl and arenyl; each of X1 and X2 is independently a hydrolyzable group or alternatively each of X1 and X2 is a hydrolyzable group having a direct bond to the silicon atom and also simultaneously a direct bond to each other to form a ring with the silicon atom of the unsaturated silane of Formula (1); and (ii) a system of at least two peroxides comprising a first peroxide having a first 0.1 hour half-life temperature and a second peroxide having a second 0.1 hour half-life temperature, the first and second 0.1 hour half-life temperatures in said composition having a temperature differential of at least about 5° C.
    Type: Application
    Filed: November 14, 2006
    Publication date: May 15, 2008
    Applicant: General Electric Company
    Inventor: Eric R. Pohl
  • Patent number: 7252784
    Abstract: The present invention relates to a cyclic ketone peroxide formulation comprising one or more crystallizing cyclic ketone peroxides, one or more co-crystallizing compounds which solidify in said cyclic ketone peroxide formulation at a temperature above the crystallization temperature of the crystallizing cyclic ketone peroxide, and, optionally, one or more conventional phlegmatizers (diluents). These formulations show improved safety and storage stability compared to conventional cyclic ketone peroxide formulations. The invention also pertains to the use of these formulations in (co)polymerization and (co)polymer modification processes.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: August 7, 2007
    Assignee: Akzo Nobel N.V.
    Inventors: Bart Fischer, John Meijer, Rolf Hendrik Van Den Berg, Johan Nuysink
  • Patent number: 7077964
    Abstract: The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkaline-earth metals from saline solutions from alkali metal chloride electrolysis.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: July 18, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lütjens
  • Patent number: 6995221
    Abstract: A process for producing organic peroxide initiators useful in the polymerization of ethylenically unsaturated monomers. The process for making the organic peroxides includes forming an aqueous emulsion of the organic peroxide. The organic peroxide is dispersed as small droplets of from 1 to 10 microns in size in the aqueous emulsion. The organic peroxide may be added to a polymerization reactor containing an ethylenically unsaturated monomer. The organic peroxide functions as a free radical initiator to polymerize the monomer. The organic peroxide may be substantially free of organic solvents and plasticizers. The resulting polymers are of high quality.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: February 7, 2006
    Assignee: Oxy Vinyls, L.P.
    Inventors: Ross J. Cozens, Qi Wang, M. Frederick V. Glock, Jr., Daniel A. Zust
  • Patent number: 6960638
    Abstract: The invention relates to polymer beads having a high content of diacyl peroxides. A prolongation of the pot life in reaction resins based on high-boiling methacrylate esters is achieved due to this high content of peroxides.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: November 1, 2005
    Assignee: Roehm GmbH & Co. KG
    Inventors: Peter Quis, Heike Heeb, Helmut Schwind, Harald Draeger
  • Patent number: 6844408
    Abstract: Ethylene homopolymers and copolymers are prepared in a tube reactor at from 160° C. to 350° C. and pressures in the range from 500 to 5000 bar, with or without use of molar mass regulators, using a peroxide mixture comprising from 1 to 95 mol %, based on the total amount of the peroxide mixture, of at least one cyclic peroxide of the formula I, where the radicals R are identical or different and are selected from among alkyl groups and aryl groups, as polymerization initiator.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: January 18, 2005
    Assignee: Basell Polyolefine GmbH
    Inventors: Andrei Gonioukh, Lars Wittkowski, Thomas Dröge, Ernst Fischer, Roger Klimesch, Philipp Rosendorfer, Gernot Köhler, Dieter Littmann
  • Patent number: 6803436
    Abstract: The invention relates to a method to safely produce, handle and transport packaged organic peroxide formulations comprising a reactive phlegmatiser and to the use of such packaged material in polymerisation and polymer modification processes, particularly the high-pressure (co)polymerisation process of ethylene and/or the suspension (co)polymerisation process of styrene.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: October 12, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Petrus Paulus Waanders, Bart Fischer, Johannes Isodorus Roes
  • Patent number: 6770716
    Abstract: It has been discovered that certain compounds serve as polymerization accelerators when employed together with peroxide initiators for the polymerization of vinylaromatic monomers. Suitable accelerators that increase the rate of decomposition of the peroxide initiator include, but are not necessarily limited to, hydroperoxides and/or metallic salts. Representative examples of suitable hydroperoxide accelerators include t-butyl hydroperoxide (TBH), cumyl hydroperoxide, and p-isopropyl cumyl hydroperoxide, whereas suitable metallic salt accelerators include cobalt naphthenate and cobalt acetoacetonate. Use of these accelerators when vinylaromatic monomers are polymerized in the presence of polybutadienes and peroxide initiators results in an increase in grafting as compared with similar copolymers made without the accelerator.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: August 3, 2004
    Assignee: Fina Technology, Inc.
    Inventors: Jose M. Sosa, Cyril Chevillard
  • Publication number: 20040082744
    Abstract: The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkaline-earth metals from saline solutions from alkali metal chloride electrolysis.
    Type: Application
    Filed: October 17, 2003
    Publication date: April 29, 2004
    Inventors: Reinhold Klipper, Werner Struver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lutjens
  • Patent number: 6716950
    Abstract: The invention describes a polymer with high transmission for UV rays, this transmission being preserved even after prolonged exposure to UV light (tanning lamps). The polymer is further characterized by a low residual monomer content (determined as methyl methacrylate).
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: April 6, 2004
    Assignee: Roehm GmbH & Co. KG
    Inventors: Sabine Servaty, Rolf Neeb, Guenther Ittmann
  • Patent number: 6703460
    Abstract: It has been discovered that sequential polyperoxides can be beneficially used as initiators for vinylaromatic/diene copolymers to give high grafting values and reasonable molecular weights. A new cyclic diperoxide did not give these same results. The sequential polyperoxide initiators can be used as the only initiators or together with other conventional peroxide initiators to advantage. The polymerization rate can also be increased using these sequential polyperoxide initiators.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: March 9, 2004
    Assignee: Fina Technology, Inc.
    Inventors: Kenneth Paul Blackmon, Lu Ann Kelly
  • Patent number: 6649663
    Abstract: The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkaline-earth metals from saline solutions from alkali metal chloride electrolysis.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: November 18, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lütjens
  • Publication number: 20030181612
    Abstract: A methacrylic resin produced by copolymerizing a composition in the presence of a radical initiator, the composition comprising methyl methacrylate and a specified compound. Further, there are provided transparent members including a transparent member for automobile and a transparent member for display, which are produced by molding the above methacrylic resin. A methacrylic resin which is excellent in transparency, heat resistance, chemical resistance and impact resistance can be produced with high productivity without the occurrence of runaway of polymerization reaction. The transparent members including a transparent member for automobile and a transparent member for display, produced by molding the above methacrylic resin, are excellent in properties such as transparency, heat resistance and impact resistance.
    Type: Application
    Filed: January 17, 2003
    Publication date: September 25, 2003
    Inventors: Noboru Kawasaki, Katsuyoshi Sasagawa, Masahiro Enna
  • Patent number: 6608150
    Abstract: Enhanced conversion rates are realized in a suspension polymerization process for styrene through the use of peroxide initiators having one hour half life temperatures from 101° to 111° C. are disclosed. Also disclosed are suitable initiator combinations which provide polymeric products with low residual monomer content at reduced process temperatures, polymerizable compositions containing such initiators and products produced by such processes and compositions.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: August 19, 2003
    Assignee: ATOFINA Chemicals, Inc.
    Inventor: Jerome Wicher
  • Patent number: 6593424
    Abstract: A method for continuously preparing a heat resistant &agr;-methylstyrene-acrylonitrile copolymer by bulk polymerization, comprising the steps of: a) Continuously charging a mixture of monomers including following materials into a continuous polymerization system with two or more stirred-vessel reactors connected in series: i) 60 to 75% (by weight of Yá-methylstyrene; ii) 25 to 40% by weight of acrylonitrile; iii) 5 to 15% by weight of a solvent; and iv) 0.05 to 0.3% by weight of a mixed initiator of an organic peroxide with a multifunctional group and an organic peroxide with a monofunctional group; b) Continuously polymerizing the monomer mixture charged at step a) starting from the first reactor to convert 50 to 70% by weight of total charged monomers into a polymer; and c) transferring reacted liquid containing the polymer from step b) to an evaporator, and then separating the polymer by evaporating unreacted monomers and solvents.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: July 15, 2003
    Assignee: LG Chem, Ltd.
    Inventors: Hyung-Sub Lee, Yun-Chang Jang
  • Publication number: 20030027948
    Abstract: Disclosed is a process which comprises (a) reacting allyl bromide with diethyl amine in a molar ratio of at least about 1 mole of allyl bromide per about 1.15 moles of diethyl amine and in a molar ratio of no more than about 1 mole of allyl bromide per about 2 moles of diethyl amine, thereby generating allyl diethyl amine in a monomer reaction mixture; (b) subsequently filtering the monomer reaction mixture to remove impurities; (c) subsequently reacting the allyl diethyl amine with allyl bromide, thereby generating solid diallyl diethyl ammonium bromide; (d) subsequently isolating the solid diallyl diethyl ammonium bromide; (e) subsequently dissolving the diallyl diethyl ammonium bromide in a solvent and adding thereto a polymerization initiator to form a polymerization reaction mixture; (f) subsequently heating the polymerization reaction mixture in a vessel equipped with a reflux condenser to a temperature of from about 90 to about 100° C.
    Type: Application
    Filed: July 26, 2001
    Publication date: February 6, 2003
    Applicant: Xerox Corporation
    Inventors: Sheau V. Kao, Daniel A. Foucher, Mohammad J. Hossain, Christine E. Bedford, George Liebermann
  • Patent number: 6486271
    Abstract: The present invention provides to overcome the deficiencies of the prior art, the present invention provides a method of producing a polymer. The method includes taking a product stream from a monovinyl aromatic polymerization system wherein the product stream comprises a polymerized monomer and a monomer. The product stream is introduced into an up-flow heat exchanger in a presence of an initiator, such as a peroxide, that affects a polymerization of the monomer in the up-flow heat exchanger. The initiator may include a low-temperature initiator and a high-temperature initiator where a ratio of the high-temperature initiator to the low-temperature initiator can range from about 0:600 to about 50:600.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: November 26, 2002
    Assignee: Fina Technology, Inc.
    Inventors: Jose M. Sosa, Aron T. Griffith
  • Patent number: 6384155
    Abstract: The invention pertains to a process wherein peroxides are dosed to a polymerization mixture, with essentially all of the organic peroxide that is used in the polymerization process having a half-life from 0.05 hour to 1.0 hour at the polymerization temperature. The dosing of such peroxide allows for accurate control of the polymerization rate, and the process will render a polymer with a low residual peroxide level.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: May 7, 2002
    Assignee: Akzo Nobel NV
    Inventors: Andreas Petrus Van Swieten, Hans Westmijze, Jacobus Schut
  • Patent number: 6358435
    Abstract: The present invention relates to a composition comprising cyclic ketone peroxide and a phlegmatizer having a 95% boil-off point falling in the range of 220-265° C., most preferably 235-250° C. A preferred peroxide is cyclic methyl ethyl ketone peroxide. Preferably, a single phlegmatizer is used. Preferred phlegmatizers are Isopar® M and Soltrol® 170. The invention also pertains to the use of compositions according to this invention in (co)polymerization and polymer modification processes.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: March 19, 2002
    Assignee: Akzo Nobel N.V.
    Inventors: Pieter Schuurman, Bernhard DeVries, Willem Koelewijn, Johannes Jacobus De Groot
  • Publication number: 20010041774
    Abstract: A radical (co)polymerization of ethylene is carried out under high pressure in the presence of at least one initiating free radical (Z•) and of at least one controlling stable free radical (SFR•) which comprises the indoline nitroxide backbone represented by the formula (I). Mention may be made, by way of examples, of the radicals (SFR•) of formula (II).
    Type: Application
    Filed: January 23, 2001
    Publication date: November 15, 2001
    Inventors: Eric Minaux, Lucedio Greci, Michael Buback, Paul Tordo, Thierry Senninger, Pierluigi Stipa, Patricia Carloni, Elisabetta Damiani, Giampaolo Tommasi
  • Publication number: 20010031846
    Abstract: The dialkyl peroxydicarbonates with short alkyl chains, preferably diethyl and diisopropyl peroxydicarbonates, are used for the aqueous suspension polymerization of vinyl chloride, in the form of a solution in a dialkyl alkanedicarboxylate which is liquid and insoluble in water. The preferred solvents are hexanedicarboxylates (adipates) derived from adipic acid and from C6-C10 alkanols. The peroxydicarbonate concentration of the said solutions is generally 15-40% by weight. The process according to the invention produces vinyl chloride polymers of improved quality resulting in shaped articles exhibiting markedly fewer fisheyes.
    Type: Application
    Filed: May 25, 2001
    Publication date: October 18, 2001
    Inventor: Vincent Bodart
  • Patent number: 6262193
    Abstract: Process for the preparation of polyvinylarene polymer particles by suspension polymerization, wherein (a) vinylarene monomers are suspended in an aqueous medium to yield a suspension; (b) the temperature of the suspension is adjusted to a temperature above 50° C., at which temperature an initiator is added; (c) subsequently, the reaction temperature is increased by 5 to 30° C. per hour until a temperature of at least 120° C. has been reached; and (d) the temperature is retained at a temperature of at least 120° C. until the polymerization is complete.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: July 17, 2001
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Adrianus Cornelis Poppelaars, Johannes Maria Zijderveld
  • Patent number: 6262225
    Abstract: The invention is related to an olefin-carbon monoxide-vinyl monomer terpolymer composition which is derived from an olefin feed and a synthesis gas feed and at least one vinyl monomer feed. The invention is also related to a method for preparing olefin-carbon monoxide-vinyl monomer terpolymers by heating an olefin feed, a synthesis gas feed and at least one vinyl monomer feed in the presence of a free radical polymerization initiator. More particularly, the synthesis gas feed comprises predominantly carbon monoxide and hydrogen. The terpolymers of the invention are useful as polyvinyl chloride plasticizers.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: July 17, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Abhimanyu O. Patil, Manika Varma-Nair
  • Patent number: 6252015
    Abstract: A process, particularly a gas phase fluidised bed process, for the production of polymers avoids formation of sheets or chunks within the reactor, without the need to use antistatic agents, which can reduce the activity of the catalyst or alter the characteristics of the yielded product. According to the invention, a device generates a corona discharge in the polymerisation reactor during the polymerisation process; an AC voltage difference is applied between the elements which constitute the discharging pair of the device.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: June 26, 2001
    Assignee: Montell Technology Company BV
    Inventors: Paolo Vincenzi, Arrigo Arletti
  • Patent number: 6242549
    Abstract: This composition, which is useful as a binder in the preparation of synthetic resin concretes or mortars, bonding primers or finishing coats, comprises (A) a system of monomers comprising: (a1) 50-90 parts of a dicyclopentenyloxyalkyl eater: where R=H or CH3; n=1 or 2; and R1=C2-C6 alkylene; (a2) 0-25 parts of at least one heavy (meth)acrylate giving a homopolymer with a Tg higher than that of a homopolymer of (a1); (a3) 0-25 parts of at least one heavy (meth)acrylate giving a homopolymer with a Tg lower than that of a homopolymer of (a1); (a4) 0-25 parts of at least one monomer containing at least two (meth)acrylic unsaturations; and (B) 5-30 parts of at least one poly(allyl glycidyl ether); and (C) an initiating system chosen from (C1) to (C4): (C1) 0.1-3 parts of at least one organic peroxide derived from a C3-C18 hydrocarbon compound and 0.1-2 parts of at least one aromatic amine; (C2) 0.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: June 5, 2001
    Assignee: Elf Atochem, S.A.
    Inventors: Didier Vanhoye, Martine Cerf, Yves Barbier, Mieczyslaw Wnuk
  • Patent number: 6124409
    Abstract: Disclosed is a process for preparing copolymers which comprises, in the order stated: (1) adding monomers containing unsaturated carbon-to-carbon bonds, a first polymerization initiator, a second polymerization initiator, and a solvent to a reaction vessel; (2) purging the resulting solution with an inert gas; (3) sealing the reaction vessel and pressurizing it by addition of an inert gas to a pressure of from about 20 to about 600 kilopascals over ambient atmospheric pressure; (4) maintaining the temperature within the pressurized reaction vessel at a temperature of from about 50 to about 100.degree. C. for a period of from about 60 to about 300 minutes; (5) thereafter maintaining the temperature within the pressurized reaction vessel at a temperature of from about 80 to about 115.degree. C.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: September 26, 2000
    Assignee: Xerox Corporation
    Inventors: T. Hwee Ng, Hadi K. Mahabadi, Man C. Tam, Gregory J. Kovacs, Eric M. Peters, Rafik O. Loutfy
  • Patent number: 6037428
    Abstract: Suspension polymerization of vinyl chloride in an aqueous medium is carried out in the presence of an oil-soluble polymerization initiator which is a combination of diacylperoxide compound and t-hexylperoxy diglycolate, the former having a half-life period of 10 hours at 30 to 50.degree. C. in benzene (0.05 mol/L). The resulting polymer gives a high-quality molded product which is free of odor and less liable to initial discoloration.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: March 14, 2000
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Ryuichi Saito, Tadashi Amano
  • Patent number: 5908905
    Abstract: There is provided a process of producing a vinyl chloride polymer wherein vinyl chloride monomer or a monomeric mixture containing vinyl chloride monomer is suspension polymerized in the presence of an oil-soluble polymerization initiator and a suspending agent in an aqueous medium in a polymerization vessel, said process comprising providing, as the oil-soluble polymerization initiator, a mixture of (A) t-butyl peroxyneoheptanoate with (B) a perester peroxide other than said t-butyl peroxyneoheptanoate, said perester peroxide being such that a 10-hour half-life period temperature of a benzene solution of said peroxide dissolved in an amount of 0.1 mole per 1 liter of benzene is 44 to 55.degree. C.; and completing the polymerization at a temperature higher than a preset temperature for the polymerization by from 10 to 20.degree. C. when or after the internal pressure of the polymerization vessel begin to drop at the terminal stage of the polymerization reaction.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: June 1, 1999
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Toshihiko Nakano, Tadashi Amano