Two Or More Peroxide Compounds Patents (Class 526/228)
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Patent number: 11639404Abstract: A method for producing a vinyl polymer including a polymerization step of using a composition including a microcapsule and polymerizing a vinyl monomer by radical reaction to produce a vinyl polymer, in which the microcapsule has a core/shell structure, and the shell includes a water-soluble polymer and the core includes an organic peroxide. The water-soluble polymer is preferably at least one water-soluble polymer selected from the group consisting of polyvinyl alcohol, cellulose derivatives, gelatin, poly(meth)acrylic acid derivatives, polyvinylpyrrolidone, and polyethylene oxide.Type: GrantFiled: February 4, 2020Date of Patent: May 2, 2023Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroaki Saito, Toshihiko Kawakubo
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Patent number: 11603420Abstract: The present invention relates to a method for preparing ethylene vinylacetate copolymer that can improve the mechanical strength of copolymer by controlling the polymerization conditions using an autoclave reactor.Type: GrantFiled: October 30, 2018Date of Patent: March 14, 2023Inventors: Dae Young Shin, Eun Jung Joo, Jin Ho Jung, Choong Hoon Lee, Kyung Soo Park, Yutaek Sung
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Patent number: 11584807Abstract: Disclosed are styrenic polymers made by a mass or solution process, where the amount of trimer consisting of styrene and/or acrylonitrile is less than about 0.50 weight percent. Also disclosed is a method of minimizing the amount of trimer consisting of styrene and/or acrylonitrile in styrenic polymers made by a mass or solution process. The method includes the steps of lowering the temperature of the polymerization reaction mixture and including more than one initiator in the polymerization reaction mixture.Type: GrantFiled: June 10, 2020Date of Patent: February 21, 2023Assignee: TRINSEO EUROPE GMBHInventors: Gilbert Bouquet, Fredericus Slijkerman
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Patent number: 11474280Abstract: The polymerizable composition for an optical material of the present invention includes a compound (A) represented by General Formula (a) and including two or more allyloxycarbonyl groups, at least one kind of radical polymerization initiator (B) selected from the group consisting of a peroxyketal-based radical polymerization initiator, a peroxymonocarbonate-based radical polymerization initiator, and a peroxyester-based radical polymerization initiator, and a modifier (C) selected from a polyether modified siloxane compound represented by General Formula (c1) or a polyol compound represented by General Formula (c2).Type: GrantFiled: February 21, 2018Date of Patent: October 18, 2022Assignee: MITSUI CHEMICALS, INC.Inventors: Tatsuya Ogawa, Masayuki Furuya, Shinsuke Ito
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Patent number: 11261269Abstract: A flame retardant with which fire retardancy is improved and the fire retardancy is able to be secured stably for a long time is provided. An internal layer 11 containing a polymer and a flame retardant factor layer 12 that is formed outside of the internal layer 11 and that contains a polymer to which at least one of a sulfonate group and a sulfonate base is bonded are included. Thereby, compared to a case that the flame retardant factor layer 12 is not included, moisture is hardly absorbed, and respective particles of the flame retardant are inhibited from being adhered to each other. Accordingly, blocking is inhibited.Type: GrantFiled: February 26, 2020Date of Patent: March 1, 2022Assignee: SONY CORPORATIONInventor: Yasuhito Inagaki
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Patent number: 10723862Abstract: A polymerizable composition for an optical material of the present invention includes a compound (A) represented by General Formula (1) including two or more allyloxycarbonyl groups; an ultraviolet absorbing agent (B) represented by General Formula (i); at least one kind of radical polymerization initiator (C) selected from the group consisting of a peroxyketal-based radical polymerization initiator, a peroxymonocarbonate-based radical polymerization initiator, and a peroxyester-based radical polymerization initiator; at least one kind of dye (D) selected from an anthraquinone-based dye, a perinone-based dye, a monoazo-based dye, a diazo-based dye, and a phthalocyanine-based dye.Type: GrantFiled: November 25, 2016Date of Patent: July 28, 2020Assignee: MITSUI CHEMICALS, INC.Inventors: Tatsuya Ogawa, Andrea Vecchione, Roberto Forestieri, Fiorenzo Renzi, Willem Bos
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Patent number: 9908954Abstract: 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: GrantFiled: August 10, 2017Date of Patent: March 6, 2018Assignee: Basell Polyolefine GmbHInventors: Dieter Littmann, Jürgen Peter Mohrbutter, Giulia Mei, Andre-Armand Finette, Sven Georg Wolfram, Michael Deuerling, Danir Khayrullin, Georg Groos, Christoph Wolf
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Patent number: 9758604Abstract: 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: GrantFiled: October 11, 2013Date of Patent: September 12, 2017Assignee: LG Chem, Ltd.Inventors: Kun Ji Kim, Yong Jin Kim, Kyung Hyun Kim
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Patent number: 9631037Abstract: 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: GrantFiled: August 18, 2016Date of Patent: April 25, 2017Assignee: Basell Polyolefine GmbHInventors: Dieter Littmann, Jurgen Peter Mohrbutter, Giulia Mei, Andre-Armand Finette, Sven Georg Wolfram, Michael Deuerling, Danir Khayrullin, Georg Groos, Christoph Wolf
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Patent number: 9441057Abstract: 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: GrantFiled: February 16, 2016Date of Patent: September 13, 2016Assignee: Basell Polyolefine GmbHInventors: Dieter Littmann, Jurgen Peter Mohrbutter, Giulia Mei, Andre-Armand Finette, Sven Georg Wolfram, Michael Deuerling, Danir Khayrullin, Georg Groos, Christoph Wolf
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Patent number: 8877871Abstract: 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: GrantFiled: September 1, 2008Date of Patent: November 4, 2014Assignees: Kyushu University, Nissan Chemical Industries, Ltd.Inventors: Katsuhiko Fujita, Kei Yasui, Masaaki Ozawa, Keisuke Odoi, Hisashi Ichikawa
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Patent number: 8835575Abstract: 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: GrantFiled: January 26, 2009Date of Patent: September 16, 2014Assignee: BASF SEInventors: Wilfried Heide, Claus Hechler, Marc Gerardus Nicolas Grimmon, Filip Mees, Karl J. Possemiers
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Patent number: 8557938Abstract: 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: GrantFiled: November 10, 2005Date of Patent: October 15, 2013Assignee: Arkema Inc.Inventors: Lotfi Hedhli, Nafih Mekhilef
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Patent number: 8470034Abstract: 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: GrantFiled: April 29, 2009Date of Patent: June 25, 2013Assignee: AcrylianInventor: Jean Terrisse
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Patent number: 8283431Abstract: 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: GrantFiled: April 27, 2004Date of Patent: October 9, 2012Assignee: Akzo Nobel NVInventors: Hans Westmijze, Lambertus Meulenbrugge, Koen Antoon Kornelis Vanduffel, Andreas Petrus Van Swieten
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Patent number: 8093332Abstract: 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: GrantFiled: September 29, 2003Date of Patent: January 10, 2012Assignee: Fina Technology, Inc.Inventors: Jose M. Sosa, Billy J. Ellis
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Patent number: 8067514Abstract: 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: GrantFiled: January 17, 2008Date of Patent: November 29, 2011Assignees: Sony Corporation, Sony Chemical & Information Device CorporationInventors: Kouichi Miyauchi, Yasushi Akutsu, Yasunobu Yamada
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Patent number: 8030415Abstract: 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: GrantFiled: March 16, 2010Date of Patent: October 4, 2011Assignee: Momentive Performance Materials, Inc.Inventor: Eric R. Pohl
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Patent number: 7960470Abstract: Disclosed are a process for producing a polymer composition having a high solubility in a solvent, and a polymer composition.Type: GrantFiled: July 28, 2006Date of Patent: June 14, 2011Assignee: The Inctec Inc.Inventor: Tamayo Okahira
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Publication number: 20100298513Abstract: 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: ApplicationFiled: January 26, 2009Publication date: November 25, 2010Applicant: BASF SEInventors: Wilfried Heide, Claus Hechler, Marc Gerardus Nicolas Grimmon, Filip Mees, Karl J. Possemiers
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Patent number: 7834110Abstract: 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: GrantFiled: March 7, 2008Date of Patent: November 16, 2010Assignee: Akzo Nobel N. V.Inventors: Lambertus Meulenbrugge, Koen Antoon Kornelis Vanduffel, Hans Westmijze
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Patent number: 7759438Abstract: 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: GrantFiled: June 18, 2004Date of Patent: July 20, 2010Assignee: Akzo Nobel N.V.Inventors: Johannes Jacobus Theodorus De Jong, Johannes Willibrordus Antonius Overkamp, Andreas Petrus Van Swieten, Koen Antoon Kornelis Vanduffel, Hans Westmijze
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Publication number: 20100160554Abstract: Disclosed are a process for producing a polymer composition having a high solubility in a solvent, and a polymer composition.Type: ApplicationFiled: July 28, 2006Publication date: June 24, 2010Applicant: The Inctec Inc.Inventor: Tamayo Okahira
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Patent number: 7741415Abstract: 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: GrantFiled: October 4, 2005Date of Patent: June 22, 2010Assignee: Dow Global Technologies IncInventors: Christopher W. Conrad, David T. Gillespie, Christopher R. Eddy
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Patent number: 7705112Abstract: 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: GrantFiled: April 17, 2007Date of Patent: April 27, 2010Assignee: Abbott Medical Optics Inc.Inventor: Zhi Jian Yu
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Patent number: 7604919Abstract: 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: GrantFiled: September 10, 2007Date of Patent: October 20, 2009Assignee: Dongjin Semichem Co., Ltd.Inventors: Deog-Bae Kim, Jung-Youl Lee, Geun-Jong Yu, Sang-Jung Kim, Jae-Woo Lee, Jae-Hyun Kim
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Patent number: 7446074Abstract: 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: GrantFiled: April 24, 2003Date of Patent: November 4, 2008Assignee: Akzo Nobel N.V.Inventors: Johannes Jacobus Theodorus De Jong, Boen Ho O, Hans Westmijze
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Patent number: 7378034Abstract: 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: GrantFiled: January 17, 2007Date of Patent: May 27, 2008Assignees: Universite de Montreal, Centre National de la Recherche Scientifique, Institute of Organic Chemistry National Academy of Sciences of UkraineInventors: Michel Armand, Christophe Michot, Yurii Yagupolskii, Lev Yagupolskii, Andrej Bezdudny, Natalya Kondratenko
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Publication number: 20080114134Abstract: 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: ApplicationFiled: November 14, 2006Publication date: May 15, 2008Applicant: General Electric CompanyInventor: Eric R. Pohl
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Patent number: 7252784Abstract: 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: GrantFiled: December 1, 2003Date of Patent: August 7, 2007Assignee: Akzo Nobel N.V.Inventors: Bart Fischer, John Meijer, Rolf Hendrik Van Den Berg, Johan Nuysink
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Patent number: 7077964Abstract: 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: GrantFiled: October 17, 2003Date of Patent: July 18, 2006Assignee: Bayer AktiengesellschaftInventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lütjens
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Patent number: 6995221Abstract: 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: GrantFiled: May 6, 2003Date of Patent: February 7, 2006Assignee: Oxy Vinyls, L.P.Inventors: Ross J. Cozens, Qi Wang, M. Frederick V. Glock, Jr., Daniel A. Zust
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Patent number: 6960638Abstract: 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: GrantFiled: July 9, 2002Date of Patent: November 1, 2005Assignee: Roehm GmbH & Co. KGInventors: Peter Quis, Heike Heeb, Helmut Schwind, Harald Draeger
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Patent number: 6844408Abstract: 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: GrantFiled: March 13, 2001Date of Patent: January 18, 2005Assignee: Basell Polyolefine GmbHInventors: Andrei Gonioukh, Lars Wittkowski, Thomas Dröge, Ernst Fischer, Roger Klimesch, Philipp Rosendorfer, Gernot Köhler, Dieter Littmann
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Patent number: 6803436Abstract: 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: GrantFiled: December 19, 2001Date of Patent: October 12, 2004Assignee: Akzo Nobel N.V.Inventors: Petrus Paulus Waanders, Bart Fischer, Johannes Isodorus Roes
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Patent number: 6770716Abstract: 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: GrantFiled: March 4, 2003Date of Patent: August 3, 2004Assignee: Fina Technology, Inc.Inventors: Jose M. Sosa, Cyril Chevillard
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Publication number: 20040082744Abstract: 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: ApplicationFiled: October 17, 2003Publication date: April 29, 2004Inventors: Reinhold Klipper, Werner Struver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lutjens
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Patent number: 6716950Abstract: 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: GrantFiled: April 20, 2001Date of Patent: April 6, 2004Assignee: Roehm GmbH & Co. KGInventors: Sabine Servaty, Rolf Neeb, Guenther Ittmann
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Patent number: 6703460Abstract: 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: GrantFiled: March 4, 2003Date of Patent: March 9, 2004Assignee: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, Lu Ann Kelly
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Patent number: 6649663Abstract: 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: GrantFiled: August 21, 2000Date of Patent: November 18, 2003Assignee: Bayer AktiengesellschaftInventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lütjens
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Publication number: 20030181612Abstract: 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: ApplicationFiled: January 17, 2003Publication date: September 25, 2003Inventors: Noboru Kawasaki, Katsuyoshi Sasagawa, Masahiro Enna
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Patent number: 6608150Abstract: 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: GrantFiled: October 8, 2002Date of Patent: August 19, 2003Assignee: ATOFINA Chemicals, Inc.Inventor: Jerome Wicher
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Patent number: 6593424Abstract: 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: GrantFiled: August 19, 2002Date of Patent: July 15, 2003Assignee: LG Chem, Ltd.Inventors: Hyung-Sub Lee, Yun-Chang Jang
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Publication number: 20030027948Abstract: 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: ApplicationFiled: July 26, 2001Publication date: February 6, 2003Applicant: Xerox CorporationInventors: Sheau V. Kao, Daniel A. Foucher, Mohammad J. Hossain, Christine E. Bedford, George Liebermann
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Patent number: 6486271Abstract: 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: GrantFiled: March 9, 2001Date of Patent: November 26, 2002Assignee: Fina Technology, Inc.Inventors: Jose M. Sosa, Aron T. Griffith
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Patent number: 6384155Abstract: 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: GrantFiled: July 16, 2001Date of Patent: May 7, 2002Assignee: Akzo Nobel NVInventors: Andreas Petrus Van Swieten, Hans Westmijze, Jacobus Schut
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Patent number: 6358435Abstract: 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: GrantFiled: May 29, 2001Date of Patent: March 19, 2002Assignee: Akzo Nobel N.V.Inventors: Pieter Schuurman, Bernhard DeVries, Willem Koelewijn, Johannes Jacobus De Groot
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Publication number: 20010041774Abstract: 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: ApplicationFiled: January 23, 2001Publication date: November 15, 2001Inventors: Eric Minaux, Lucedio Greci, Michael Buback, Paul Tordo, Thierry Senninger, Pierluigi Stipa, Patricia Carloni, Elisabetta Damiani, Giampaolo Tommasi
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Publication number: 20010031846Abstract: 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: ApplicationFiled: May 25, 2001Publication date: October 18, 2001Inventor: Vincent Bodart
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Patent number: 6262225Abstract: 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: GrantFiled: July 18, 2000Date of Patent: July 17, 2001Assignee: ExxonMobil Research and Engineering CompanyInventors: Abhimanyu O. Patil, Manika Varma-Nair