Two Or More Peroxy Groups In Same Compound Patents (Class 526/232.3)
  • Patent number: 10196461
    Abstract: A process for producing an esterified cellulose ether can be efficiently be produced by reacting a moist cellulose ether having a water content of at least 10 percent, based on the weight of the moist cellulose ether, with an aliphatic monocarboxylic acid anhydride, a dicarboxylic acid anhydride or a combination thereof. Further improvements in efficiency and reduction in process steps are achieved in a process for producing an esterified cellulose ether which comprises the steps of a) reacting cellulose with an alkaline material to produce alkali cellulose, b) reacting the produced alkali cellulose with one or more etherifying agents and washing the produced cellulose ether to obtain a moist cellulose ether having a water content of at least 10 weight percent, and c) reacting the moist cellulose ether with an aliphatic monocarboxylic acid anhydride and/or a dicarboxylic acid anhydride and with a depolymerizing agent.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: February 5, 2019
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Oliver Petermann, Matthias Sprehe, Robert B. Appell
  • Publication number: 20130310518
    Abstract: A method for manufacturing polyethylene or an ethylene copolymer, including a step of free radical polymerisation or copolymerisation of the ethylene at an initiation temperature varying from 150° C. to 200° C., at a pressure varying from 500 to 3000 bar, in the presence of a peroxidic polymerisation initiator selected from among the peroxide compounds of formula (I) in which R1 and R8 are, separately, a C2-C6 alkyl group; R2, R3, R6 and R7 are, separately, a C1-C5 alkyl group; and R4 and R5 are, separately, a C1-C6 alkyl group.
    Type: Application
    Filed: February 8, 2012
    Publication date: November 21, 2013
    Applicant: ARKEMA FRANCE
    Inventors: Pascal Nicol, Serge Hub
  • Publication number: 20130172501
    Abstract: A polymer for an optical film that includes a repeating unit A including a repeating unit represented by the following Chemical Formula 1; and a repeating unit B including a repeating unit represented by the following Chemical Formula 2, wherein R1 to R8, n1 and n2, are defined herein.
    Type: Application
    Filed: July 27, 2012
    Publication date: July 4, 2013
    Applicants: CHEIL INDUSTRIES, INC., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Won Cheol JUNG, Moon Yeon LEE, Kyu Yeol IN, Woo Joong KIM, Hyung Jun KIM, Hyeon Ho CHOI, Jong-Hoon WON, Myung Sup JUNG
  • Publication number: 20120302657
    Abstract: Composition which contains polymerizable binder and an initiator according to the following Formula I: R1—X—O—O—[Y—O—O—-]nR2??(Formula I) and having a large through-curing depth and a sufficiently long processing time and which cures without the development of high temperatures.
    Type: Application
    Filed: November 14, 2011
    Publication date: November 29, 2012
    Applicant: IVOCLAR VIVADENT AG
    Inventors: Norbert MOSZNER, Ulrich SALZ, Peter BURTSCHER, Robert LISKA, Astrid GUGG, Christian GORSCHE
  • Patent number: 8097687
    Abstract: The invention provides compositions of matter, methods of their synthesis, and methods of their use in polymerization reactions. The compositions include polyfunctional initiators used to make star polymers when polymerized with monomers. The polyfunctional initiators are synthesized out of a multifunctional core with at least two functional groups and two or more initiator units bonded to the functional groups. The initiator units have two electron-withdrawing groups bonded to a central carbon atom and an azo group between the central carbon atom and the functional group. The polyfunctional initiators are particularly effective because when they decompose to form the radical core of a star polymer, the electron-withdrawing groups prevent the corresponding radical from forming any linear polymer contamination and only desired star polymers result.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: January 17, 2012
    Assignee: Nalco Company
    Inventors: Pious V. Kurian, Anoop Chengara, Jeffery M. Atkins
  • Publication number: 20110152487
    Abstract: Described herein are partially fluorinated elastomers and methods of curing comprising (i) a fluoroelastomer comprising interpolymerized units derived from (a) at least one hydrogen containing monomer and (b) at least one nitrile containing monomer, and (ii) a curing agent, wherein the curing agent consists essentially of a peroxide and a coagent.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 23, 2011
    Inventors: Jennifer L. Cook, Tatsuo Fukushi, Werner M.A. Grootaert, Alain Verschuere
  • Patent number: 7572873
    Abstract: Golf ball components, such as cores, intermediate layers, and covers, formed with compositions including precursors with acrylate functionality crosslinked with a curing agent.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: August 11, 2009
    Assignee: Acushnet Company
    Inventors: Mitchell E. Lutz, Manjari Kuntimaddi
  • Patent number: 7514516
    Abstract: Disclosed are novel non-linear vinyl polymers comprised of a multifunctional peroxide, and a cross-linking agent and/or a chain transfer agent, and methods of making such polymers having: at least 0.03 branches/1000 backbone carbons; linear portions with a molecular weight (Mw) of 350,000 or less; 0.2 to 3.0 branches/molecule; or, a Mz/Mw of from 1.7 to 5.7. Methods of quantifying branching are disclosed using a linear reference having 0.0 to 0.06 branches/1000 backbone carbons along with SEC techniques and measurements of molecular weight, molecular size, and concentration. Also discovered is a vinyl polymer resin comprised of from 0.1 to 50 weight percent of non-linear polymers having at least 0.06 branches/1000 backbone carbons, where branching is measured using a heat polymerized polystyrene having from 0.0 to 0.06 branches/1000 backbone carbons as a linear reference.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: April 7, 2009
    Assignee: Fina Technology, Inc.
    Inventors: Brad Stiles, Jose M. Sosa, Cyril Chevillard, Aron Griffith, Jay L. Reimers
  • Patent number: 7304114
    Abstract: Liquid rubbers that are ordinarily immiscible in liquid thermoset resins can be made miscible by the addition of at least one non-functional aromatic end-group to the polymer chains of such liquid rubber compositions. Such addition may be initiated by high-temperature peroxides in non-functional aromatic solvents. The liquid rubbers are found to improve the fracture toughness of cured thermoset resins while maintaining dimensional and heat resistance.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: December 4, 2007
    Assignee: Rohm and Haas Company
    Inventor: Edward Ewart LaFleur
  • Patent number: 7300982
    Abstract: A process for producing a modified polyethylene resin, which comprises the step of melt kneading at least: (A) 100 parts by weight of a polyethylene resin, (B) from 0.1 to 20 parts by weight of at least one compound selected from the group consisting of: (B1) a compound having in its molecule (i) at least one carbon-carbon double or triple bond and (ii) at least one polar group, and (B2) a compound having in its molecule (iii) an OR group and (iv) at least two specific functional groups, and (C) from 0.01 to 20 parts by weight of an organic peroxide having a decomposition temperature of from 50 to 115° C., at which temperature a half-life thereof is 1 minute.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: November 27, 2007
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shinichi Kondo, Takashi Sanada
  • Patent number: 7045581
    Abstract: A method for carrying out homogenous polymerization reactions in a reactor, wherein monomers and/or prepolymers are fed (apportioned). In a first step, an initiator is optionally admixed with the monomer and/or prepolymer. In a second step, once viscosity is substantially higher, a solvent is added thereto and/or the monomer itself is partially evaporated, it is condensed externally and/or internally and fed back into the reactor.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: May 16, 2006
    Assignee: List AG
    Inventor: Pierre-Alain Fleury
  • Patent number: 6972311
    Abstract: It has been discovered that improved polystyrene products may be obtained by polymerizing styrene in the presence of at least one multifunctional initiator, at least one chain transfer agent, and at least one cross-linking agent. The presence of the multifunctional initiator tends to cause more branched structures in the polystyrene. A mathematical model that helps optimize the levels of these additives for given molecular weights, melt flow indices (MFIs) and zero shear viscosities (?0) has also been discovered.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: December 6, 2005
    Assignee: Fina Technology, Inc.
    Inventors: Cyril Chevillard, Jose M. Sosa, Aron Griffith, Jay Reimers
  • 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
  • Publication number: 20040242827
    Abstract: It has been discovered that improved polystyrene products may be obtained by polymerizing styrene in the presence of at least one multifunctional initiator, at least one chain transfer agent, and at least one cross-linking agent. The presence of the multifunctional initiator tends to cause more branched structures in the polystyrene. A mathematical model that helps optimize the levels of these additives for given molecular weights, melt flow indices (MFIs) and zero shear viscosities (&eegr;0) has also been discovered.
    Type: Application
    Filed: May 27, 2003
    Publication date: December 2, 2004
    Inventors: Cyril Chevillard, Jose M. Sosa, Aron Griffith, Jay Reimers
  • 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
  • Patent number: 6720398
    Abstract: The invention relates to a polymerization process wherein at least one initiator is selected from trioxepan compounds of formula I with R1-3 being independently selected from substituted or unsubstituted hydrocarbyl groups.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: April 13, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Andreas H. Hogt, John Meijer
  • 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: 6608141
    Abstract: The melt of polyvinyl aromatic polymers comprising from 10 to 45 weight % of star branched polymer prepared using a combination of thermal and tetra functional peroxide initiation has an improved melt strength permitting better foam formation for extrusion foam blown with conventional blowing agents and inert gases including CO2 and an improved tensile strength for oriented polystyrene (OPS) articles, e.g. blown film or extruded sheet.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: August 19, 2003
    Assignee: NOVA Chemicals Inc.
    Inventors: Steven M. Krupinski, Robert J. Gorka
  • 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: 6433092
    Abstract: The melt of polyvinyl aromatic polymers comprising from 10 to 45 weight % of star branched polymer prepared using a combination of thermal and tetra functional peroxide initiation has an improved melt strength permitting better foam formation for extrusion foam blown with conventional blowing agents and inert gases including CO2 and an improved tensile strength for oriented polystyrene (OPS) articles, e.g. blown film or extruded sheet.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: August 13, 2002
    Assignee: Nova Chemicals Inc.
    Inventors: Steven M. Krupinski, Robert J. Gorka
  • Patent number: 6395924
    Abstract: The new compound t-butylperoxycyclododecyl oxalate is described, as well as a method of preparing it and use of the compound as a polymerization initiator.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: May 28, 2002
    Assignee: Peroxid-Chemie GmbH & Co KG
    Inventors: Eberhard Hägel, Werner Zeiss, Maximilian Dorn
  • Patent number: 6326446
    Abstract: The present invention provides a macroporous hyperhydroxy polymer formed from a monomer mixture of substantially similar fractions of functional acrylic monomers which are combined to form a compound having a polymer skeleton which provides a high number of hydroxyl sites. The result is a material which, when hydrated, has a pore size relative to oxygen and water which provides a high ratio of free water to bound water. When formed into contact lenses, the material exhibits oxygen permeability approaching that of a static layer of tears of equal thickness and water contents of 95% or greater. The polymer is also suitable for use as burn dressings, bandages, soil hydratants, surface treatments, lubricants and coatings, absorbents, transport membranes and the like.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: December 4, 2001
    Inventor: James T Carter
  • Patent number: 6320007
    Abstract: A free radical polymerization process for the preparation of a thermoplastic resin or resins includes the in situ formation of a stable free radical agent from a precursor material in a reactor vessel, introducing a free radical initiator and at least one polymerizable monomer compound into the reactor vessel, and heating a mixture of the free radical initiator, the stable free radical agent, and the polymerizable monomer compound(s) in the reactor vessel to form a thermoplastic resin.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: November 20, 2001
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Michael K. Georges, Richard P. N. Veregin, Barkev Keoshkerian, Gordon K. Hamer, Karen A. Moffat, Marko Saban
  • Patent number: 6316548
    Abstract: A (meth)acrylic premix comprising a (meth)acrylic resin composition (A) containing a (meth)acrylic monomer (a) and a (meth)acrylic polymer (b), an inorganic filler (B), and a curing agent (C), wherein, the component (a) is a (meth)acrylate having a bicyclo ring, fluorine atom, cyclic ether, cyclohexane ring or tricyclo ring, and the component (C) is a radical polymerization initiator having a 10 hours half-life temperature of 75° C. or more; an acrylic SMC or BMC comprising this (meth)acrylic premix and a thickening agent; and a method for producing (meth)acrylic artificial marble, wherein this (meth)acrylic SMC or BMC is cured with being pressurized and heated at a temperature in the range from 105 to 150° C., are provided. These are useful for producing (meth)acrylic artificial marble having various excellent physical properties such as appearance, dimension stability, hot water resistance, weatherability.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: November 13, 2001
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Seiya Koyanagi, Katsumi Yonekura, Shinji Saiki, Kentaro Hayashi, Yuichiro Kishimoto