Air, Elemental Oxygen, Ozone Or Peroxide Chemical Treating Agent Patents (Class 525/333.8)
  • Patent number: 10829572
    Abstract: The present invention relates to a use or process for the reduction of gels in polyethylene materials comprising at least one ethylene copolymer with a density ?850 kg/m3 and <905 kg/m3 wherein a polyethylene material is subjected to melt processing in the presence of a free radical initiator composition characterized in that the free radical initiator composition may for example be added in quantities ?0.050 wt. % compared to the total weight of the polyethylene material, wherein further the melt processing is performed in a melt processing unit, wherein the free radical initiator composition is dosed to the melt processing unit in a stage where the polyethylene material is in a molten condition and melt processing is conducted at a temperature of ?160° C. and ?240° C.
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: November 10, 2020
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Franciscus Petrus Hermanus Schreurs, Jan Nicolaas Eddy Duchateau, Ana Luisa Vaz, Maria Soliman, Priya Garg
  • Patent number: 10703831
    Abstract: The disclosure relates to a method for modifying the rheology of a polymer and a polymeric composition obtained by the method. The composition comprises at least one organic peroxide and water in emulsion form. The polymer may comprise a polyolefin. The method comprises extruding a molten polymer and the composition and removing volatile compounds from the molten polymer.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: July 7, 2020
    Assignee: Lummus Novolen Technology GmbH
    Inventors: Manfred Wittner, Angela Hilgers, Geoffrey Detavernier, Michael Neidhoefer
  • Patent number: 10619078
    Abstract: The invention provides adhesives comprising at least one polymer component which contains at least 65 weight percent propylene, at least one nucleator and at least one functionalized wax. The inventive adhesives have increased heat resistance and decreased set-time, making them particularly well suited for assembly and packaging applications.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: April 14, 2020
    Assignees: HENKEL AG & CO. KGAA, HENKEL IP & HOLDING GMBH
    Inventors: Richard Ellis, Charles W. Paul, Dirk Kasper, Petra Padurschel, Andrea Eodice
  • Patent number: 10604610
    Abstract: The present disclosure provides a peroxide-modified polyethylene and related compositions as well as films, sheets, and multilayer structures made therefrom. A film composition is made from or containing a peroxide-modified polyethylene composition made from or containing a peroxide-modified polyethylene made from or containing the reaction products of a polyethylene composition made from or containing a first Ziegler-Natta-catalyzed polyethylene and a first amount of an organic peroxide to the second reactor.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: March 31, 2020
    Assignee: Equistar Chemicals, LP
    Inventors: Stephen M. Imfeld, D. Ryan Breese
  • Patent number: 10259769
    Abstract: Polystyrene-containing polymers are converted to benzoic acid by catalytic oxidation of dissolved polystyrene under elevated temperature and pressure. The produced benzoic acid is recovered by evaporation.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: April 16, 2019
    Inventor: David Lee Sikkenga
  • Patent number: 9890258
    Abstract: A plastic film is produced by blending a polymer with particles encapsulating an oxidizing agent, such as hydrogen peroxide. Optionally, an “oxodegradable” and/or “oxo biodegradable” additive that promotes degradation of the polymer in the presence of oxygen may be blended into the plastic film. The presence of the oxidizing agent within the plastic film ensures degradation of an article of manufacture, e.g., a plastic bag, when it is disposed of in an anaerobic environment, such as a landfill. In some embodiments, the particles are microcapsules and/or nanocapsules each having a polymer shell encapsulating a core that includes the oxidizing agent. In some embodiments, the particles are microparticles and/or nanoparticles each having a matrix in which the oxidizing agent is encapsulated.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: February 13, 2018
    Assignee: International Business Machines Corporation
    Inventors: Joseph Kuczynski, Debra Neuman-Horn, Joseph F. Prisco, Kevin J. Przybylski
  • Patent number: 9834642
    Abstract: Synthesizing poly(alkoxyamine amide)s, which have a monomer chain with at least one thermolabile bond between monomers from an acid monomer of a monohalogenated carboxylic acid X—C(R,R?)—Y—COOH and an amine monomer having a free terminal free-radical nitroxide group >N—O? and a free terminal primary amine —NH2. The synthesis involves two separate and chemically selective chemical reactions. One reacts the —COOH and —NH2 groups to obtain an amide bond —NH—CO—Y—C(R, R?)—, and the other reacts the —Y—C(R, R?)? free-radical with the nitroxide function >N—O? in order to obtain an alkoxyamine bond —Y—C(R, R?)—O—N<. The chemical reactions are performed in alternating fashion with catalysts and a novel halogenated acid monomer X—C(R,R?)—Y—COOH or a novel free-radical amine monomer having a free terminal group >N—O? and a free terminal primary amine —NH2, until a complete copolymer chain is obtained. Also the polymers obtained and the uses thereof.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: December 5, 2017
    Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Jean-Francois Lutz, Anna Meszynska
  • Patent number: 9828502
    Abstract: A pellet composed of a polymeric blend having a polyolefin and polylactic acid.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: November 28, 2017
    Assignee: Fina Technology, Inc.
    Inventors: Fengkui Li, John Ashbaugh, David Rauscher
  • Patent number: 9725627
    Abstract: The use of a hot-melt adhesive as a protective element for objects is disclosed, wherein the hot-melt adhesive contains over 80 wt. % of at least one modified polyolefin copolymer produced from a high-molecular-weight polyolefin copolymer by thermomechanical degradation of the polymer under shear stress and/or heating, wherein the viscosity of the copolymer is reduced, and up to 20 wt. % of additives and auxiliary substances, wherein the adhesive has a softening point from 70 to 150° C.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: August 8, 2017
    Assignee: HENKEL AG & CO. KGAA
    Inventor: Claudia Blodig
  • Patent number: 9290600
    Abstract: Process for providing a polypropylene composition comprising a branched polypropylene in which a polypropylene with a melt flow rate MFR2 (230° C.) of more than 0.5 g/10 min is reacted with a thermally decomposing free radical-forming agent and optionally with a bifunctionally unsaturated monomer obtaining thereby the branched polypropylene, wherein the polypropylene composition has a F30 melt strength of more than 20.0 cN and a V30 melt extensibility of more than 200 mm/s.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: March 22, 2016
    Assignee: Borealis AG
    Inventors: Hermann Prokschi, Hermann Braun
  • Patent number: 8968851
    Abstract: A peroxide crosslinked ethylene polymer pressure pipe and a method for the preparation thereof are described. The pipe is characterized in that it comprises an ethylene polymer with a density of less than 950 kg/m3 obtained by polymerization with a single-site catalyst and having a shear thinning index, SHI5/300 of less than 20 and a MWD of <10. The method is characterized in that it comprises polymerizing ethylene, optionally together with at least one comonomer, with a single-site catalyst to provide the above defined ethylene polymer, forming the ethylene polymer into a pipe by extrusion and crosslinking it.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: March 3, 2015
    Assignee: Borealis Technology Oy
    Inventors: Philipp Walter, Anneli Pakkanen, Jeroen Oderkerk, Magnus Palmlof, Lars Hojer, Bill Gustafsson, Tore Dreng
  • Publication number: 20150030852
    Abstract: Power wire or cables comprise polyethylene compositions prepared by use of a single site catalyst system and in particular comprise copolymers of ethylene and ?-olefins prepared by use of metallocene catalyst systems. The polyethylene compositions deliver a unique combination of mechanical properties and processing behaviour. They are particularly suitable for insulating layers in low and medium voltage applications as well as for jacketing layers.
    Type: Application
    Filed: January 24, 2013
    Publication date: January 29, 2015
    Inventors: Dominique Jan, Yves-Julien Lambert
  • Publication number: 20140342141
    Abstract: Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin.
    Type: Application
    Filed: May 14, 2013
    Publication date: November 20, 2014
    Inventors: Lili Cui, Ashish M. Sukhadia, Vivek Rohatgi
  • Patent number: 8853329
    Abstract: The present invention relates to an adhesive, comprising at least one polymer system obtained by a process for reducing the melt viscosity of at least one polymer blend starting material, wherein the process comprises the step of treating at least one polymer blend with at least one radical donor under shear stress at a temperature above the softening point of said polymer blend.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: October 7, 2014
    Assignees: Henkel AG & Co. KGAA, Henkel US IP LLC
    Inventors: Dirk Kasper, Thomas Möller, Gunter Hoffmann, Knut Hoffmann, Andy Swain, Claudia Yaacoub, Maria Cristina Barbosa Dejesus
  • Patent number: 8785563
    Abstract: A cross-linkable fluoroelastomer remarkably excellent in cross-linkability and a method for its production, a fluoroelastomer composition excellent in the cross-linked physical properties, and a cross-linked rubber. A cross-linkable fluoroelastomer having a Mooney viscosity of from 20 to 300, obtainable by heat-treating a mixture of a fluoroelastomer (A), an organic peroxide (B) and at least one additive (C) selected from the group consisting of a C12-28 higher fatty acid, a metal salt of a C12-28 higher fatty acid, an ester of a C12-28 higher fatty acid, an amide of a C12-28 higher fatty acid and a C12-28 higher aliphatic alcohol, at a temperature of from 110 to 380° C.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: July 22, 2014
    Assignee: Asahi Glass Company, Limited
    Inventors: Masahide Yodogawa, Masayuki Saito
  • Patent number: 8722817
    Abstract: A process is taught, comprising polymerizing ethylene in the presence of a catalyst to form a crystalline ethylene-based polymer having a crystallinity of at least 50% as determined by DSC Crystallinity in a first reactor or a first part of a multi-part reactor and reacting the crystalline ethylene-based polymer with additional ethylene in the presence of a free-radical initiator to form an ethylenic polymer in at least one other reactor or a later part of a multi-part reactor.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: May 13, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Sean W. Ewart, Christopher R. Eddy, Alfred E. Vigil, Jr., Mehmet Demirors, Sarat Munjal, Wallace W. Yau
  • Publication number: 20140088266
    Abstract: This invention relates to relates to a polyolefin composition comprising one or more of the following formulae: wherein the PO is the residual portion of a vinyl terminated macromonomer (VTM) having had a terminal unsaturated carbon of an allylic chain and a vinyl carbon adjacent to the terminal unsaturated carbon.
    Type: Application
    Filed: September 19, 2013
    Publication date: March 27, 2014
    Inventors: Ian C. Stewart, David T. Harris
  • Patent number: 8674029
    Abstract: The present invention generally relates to a process for preparing stabilized polymeric systems with excellent light, thermal and oxidation stability using an active, peroxide containing polymer oxidizing agents, amine-containing reducing agents, and/or nano-additives, and the polymer articles made therefrom.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: March 18, 2014
    Assignee: Sunocs LLC
    Inventor: Chengqian Song
  • Publication number: 20130317166
    Abstract: An ?-olefin polymer satisfying the following (1) to (4): (1) the average carbon-atom number of ?-olefins constituting the polymer is 6.0 or more and 14 or less; (2) the molecular weight distribution (Mw/Mn)?2.0; (3) 3000?weight average molecular weight (Mw)?600000; and (4) (Log10 Mp-Log10M1)?(Log10M2-Log10Mp)?0.2; wherein, in a chart measured by gel permeation chromatography, M1 is the molecular weight at the starting point of the peak, Mp is the molecular weight at the peak top; and M2 is the molecular weight at the end point of the peak.
    Type: Application
    Filed: November 24, 2011
    Publication date: November 28, 2013
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Masami Kanamaru, Takenori Fujimura, Yutaka Minami
  • Publication number: 20130288000
    Abstract: A biaxially-oriented polypropylene film for an ultra-thin capacitor that has superior heat resistance, withstand voltage performance and long-term durability. The film has a stereoregularity in which mesopentad fraction (mmmm) as determined by measurement of high temperature nuclear magnetic resonance (high temperature NMR) is between 94% and 98%, a weight average molecular weight (Mw) of 250,000 to 450,000, a molecular weight distribution (Mw/Mn) of 4 to 7, and on a molecular weight distribution curve, a difference determined by subtracting the differential distribution value when the logarithm of molecular weight Log(M)=6 from the differential distribution value when Log(M)=4.5 that is 9% to 15%. The film is fabricated using a polypropylene raw material resin in which the composition of the aforementioned molecular weight distribution has been adjusted by peroxidative decomposition treatment of a polypropylene resin.
    Type: Application
    Filed: January 18, 2012
    Publication date: October 31, 2013
    Applicant: OJI HOLDINGS CORPORATION
    Inventors: Tadakazu Ishiwata, Yoshinori Matsuo, Yuichi Shishido
  • Publication number: 20130245203
    Abstract: Disclosed is a method for viscosity breaking of a polypropylene polymer, a polypropylene copolymer or a polypropylene polymer blend, which process comprises adding a chain transfer agent and an initiator to a polypropylene polymer, polypropylene copolymer or polypropylene polymer blend and heating the resultant composition. The chain transfer agent has a Cs value of greater than or equal to about 0.04 as measured in ethylene polymerization at 130° C. The initiator is for example an organic or inorganic peroxide, a carbon based radical generator, a bis azo compound, a stable nitroxyl compound, a sterically hindered NO-acyl compound or a sterically hindered alkoxyamine compound.
    Type: Application
    Filed: May 14, 2013
    Publication date: September 19, 2013
    Applicant: BASF SE
    Inventors: David E. Horst, Michael Roth, Peter Nesvadba
  • Patent number: 8536287
    Abstract: The present invention relates to a process for the production of fibres and filaments with polypropylene having a broad polydispersity index. The present invention also relates to high elongation nonwoven prepared from such fibres and filaments. It further relates to films and laminates prepared from high elongation nonwoven.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: September 17, 2013
    Assignee: Total Research & Technology Feluy
    Inventors: Hugues Haubruge, Guillaume Pavy, Alain Standaert
  • Patent number: 8476394
    Abstract: A polymeric resin having a lower molecular weight (LMW) component and a higher molecular weight (HMW) component and the resin having a density of from about 0.955 g/cc to about 0.967 g/cc, a melt index of from about 0.5 dg/min to about 4.0 dg/min, and a zero shear viscosity of from about 3.0×103 Pa-s to about 4.0×104 Pa-s. A method comprising providing a catalyst system comprising at least one transition metal complex, an activator support, and a cocatalyst; contacting the catalyst system with an olefin under conditions suitable to form a polyolefin, wherein the polyolefin has a HMW component and a LMW component; and recovering the polyolefin, wherein the polyolefin has a melt index of from about 0.5 dg/min to about 4.0 dg/min, and a zero shear viscosity of from about 3.0×103 Pa-s to about 4.0×104 Pa-s.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: July 2, 2013
    Assignee: Chevron Philips Chemical Company LP
    Inventors: Guylaine St. Jean, Qing Yang, Chung Tso, Max P. McDaniel
  • Publication number: 20130000947
    Abstract: A polymer composition with improved DC electrical properties and a cable surrounded by at least one layer comprising the polymer composition are provided.
    Type: Application
    Filed: November 3, 2010
    Publication date: January 3, 2013
    Applicant: BOREALIS AG
    Inventors: Annika Smedberg, Birgitta Kallstrand, Ulf Nilsson, Per-Ola Hagstrand, Villgot Englund, Gustavo Dominguez, Carl-Olof Olsson, Liu Rongsheng, Marc Jeroense
  • Patent number: 8330044
    Abstract: An insulation material for electric cables includes an ethylene-alpha olefin copolymer with a melting point of 30° C. to 90° C.; and 0.5 to 20 parts by weight of a crosslinking agent based on 100 parts by weight of the ethylene-alpha olefin copolymer. The insulation material composition is based on a non-crystalline ethylene copolymer, and thus is flexible and satisfies tensile strength and insulation characteristics in conformity with the industrial standards. The insulation material composition is suitable for an insulation of electric cables for power, control and signaling that are installed in narrow spaces, in particular, electric cables for ships.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: December 11, 2012
    Assignee: LS Cable & System Ltd.
    Inventors: Do-Hyun Park, Min-Su Jung
  • Publication number: 20120305284
    Abstract: A crosslinkable and crosslinked polymer composition with improved DC electrical properties and a cable surrounded by at least one layer comprising the polymer composition are provided.
    Type: Application
    Filed: November 3, 2010
    Publication date: December 6, 2012
    Applicant: BOREALIS AG
    Inventors: Ulf Nilsson, Annika Smedberg, Alfred Campus
  • Publication number: 20120264889
    Abstract: A production process of an olefin polymerization catalyst, comprising steps of (1) contacting a defined zinc compound, Zn(L1)2, with a defined halogenated alcohol, thereby forming a zinc atom-containing compound, and (2) contacting the zinc atom-containing compound with a defined transition metal compound and an optional organoaluminum compound; and a production process of an olefin polymer using such an olefin polymerization catalyst.
    Type: Application
    Filed: December 14, 2010
    Publication date: October 18, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kazuo Takaoki, Takahiro Hino
  • Patent number: 8283426
    Abstract: The present invention relates to a process for the production of fibers and filaments with polypropylene having a broad polydispersity index. The present invention also relates to high elongation nonwoven prepared from such fibers and filaments. It further relates to films and laminates prepared from high elongation nonwoven.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: October 9, 2012
    Assignee: Total Petrochemicals Research Feluy
    Inventors: Hugues Haubruge, Guillaume Pavy, Alain Standaert
  • Publication number: 20120220730
    Abstract: A high melt strength polypropylene is formed using maleated polypropylene and a combination of coupling agents and acid neutralizers. The maleated polypropylene can be formed using multi-functional monomers. The high melt strength polypropylene can be useful for foaming, sheet extrusion thermoforming, extrusion blow molding, extrusion coating, fiber, film, and the like.
    Type: Application
    Filed: February 24, 2011
    Publication date: August 30, 2012
    Applicant: Fina Technology, Inc.
    Inventors: Fengkui Li, John Ashbaugh, David Rauscher, Robert Dotter
  • Patent number: 8207277
    Abstract: A method of modifying a tubular low density polyethylene (LDPE) is disclosed. In the method ethylene is polymerized with a free radical initiator in a high pressure reactor to form an LDPE. The LDPE is then reacted with a free radical initiator to produce a modified polyethylene. The modified polymer has an increased long chain branching index as indicated by the increase in the gel permeation chromatography branching index.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: June 26, 2012
    Assignee: Equistar Chemicals, LP
    Inventors: Debra L. Beran, Mark P. Mack, Anil W. Saraf
  • Publication number: 20120128912
    Abstract: The invention is directed to a use of a polymer composition comprising an ethylene polymer for producing a crosslinked pipe, a process for producing a crosslinked pipe and to a crosslinked pipe comprising a crosslinked polymer composition which comprises a crosslinked ethylene polymer.
    Type: Application
    Filed: May 20, 2010
    Publication date: May 24, 2012
    Applicant: BOREALIS AG
    Inventors: Carl-Gustaf Ek, Jeroen Oderkerk, Magnus Palmlöf, Tua Sundholm
  • Publication number: 20120123013
    Abstract: The invention is directed to a use of a polymer composition comprising an ethylene polymer for producing a crosslinked article, a process for producing a crosslinked article and to a crosslinked article comprising a crosslinked polymer composition which comprises a crosslinked ethylene polymer.
    Type: Application
    Filed: May 20, 2010
    Publication date: May 17, 2012
    Applicant: BOREALIS AG
    Inventors: Carl-Gustaf Ek, Magnus Palmlöf, Floran Prades
  • Patent number: 8178629
    Abstract: Described are conjugated polymer fibers and nanofibers, methods of making, and methods of use thereof. The conjugated polymer fibers and nanofibers can be prepared by an electrostatic spinning process followed by crosslinking.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: May 15, 2012
    Assignee: University of Connecticut
    Inventors: Gregory A. Sotzing, Patrick T. Mather
  • Patent number: 8168112
    Abstract: Blown films and processes of forming the same are described herein. The processes generally include providing a bimodal ethylene based polymer, blending the bimodal ethylene based polymer with at least about 30 ppm peroxide to form modified polyethylene and forming the modified polyethylene into a blown film.
    Type: Grant
    Filed: December 20, 2008
    Date of Patent: May 1, 2012
    Assignee: Fina Technology, Inc.
    Inventors: Cyril Chevillard, Jay Nguyen
  • Publication number: 20120035307
    Abstract: The present invention generally relates to a process for preparing stabilized polymeric systems with excellent light, thermal and oxidation stability using a redox formulation containing an oxidizing agent, a reducing agent, and/or nano-additives, and the polymer articles made therefrom.
    Type: Application
    Filed: August 6, 2010
    Publication date: February 9, 2012
    Inventor: Chengqian Song
  • Patent number: 8044145
    Abstract: To provide a cross-linkable fluoroelastomer, a cross-linkable fluoroelastomer composition and a cross-linked rubber molded products thereof. A cross-linkable fluoroelastomer having a Mooney viscosity of from 20 to 300, obtainable by heat treating a mixture of a fluoroelastomer (A) and an organic peroxide (B) at a temperature of from 110 to 380° C. for from 10 seconds to 3 hours; a fluoroelastomer composition comprising the cross-linkable fluoroelastomer, a cross-linking agent (C) and a cross-linking assistant (D); and cross-linked rubber molded products thereof.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: October 25, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Masahide Yodogawa, Masayuki Saito
  • Patent number: 7968653
    Abstract: The present invention concerns the use of RO. radicals, R being a hydrogen, an alkyl group having 2 to 15 carbons, an acyl group —COR? in which R? represents an alkyl group having 2 to 15 carbons, or an aroyl group —COAr in which Ar represents an aromatic group having 6 to 15 carbons, for the hydroxylation, alkoxylation or oxycarbonylation of polymer surfaces, the said polymers being different from polymers chosen from: polymethylmethacrylate (PMMA) and fluorocarbon polymers when R represents a hydrogen, or of polymer mixture surfaces, notably hydrophobic ones, the said polymers consisting in monomeric units of which at least 50% among these are aliphatic units, and the said RO. radicals being generated by electrochemical or photochemical means.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: June 28, 2011
    Assignee: Alchimer
    Inventors: Christophe Bureau, Jean Pinson
  • Patent number: 7902300
    Abstract: This invention relates to the use of a cyclic ketone peroxide of half-life time larger than one second at a temperature of 225° C., for producing a controlled rheology polypropylene heterophasic copolymer of melt index MI2 larger than 15 g/10 min, having simultaneously a very high impact resistance and a high flexural modulus.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: March 8, 2011
    Assignee: Total Petrochemicals Research Feluy
    Inventors: Philippe VanDeurzen, Lisa K. Albe, William Wheat, Michel Daumerie
  • Publication number: 20110034637
    Abstract: The present invention relates to a polymer composition with an increased rate of oxygen-uptake by the presence of a co-catalyst and an oxidation catalyst.
    Type: Application
    Filed: January 9, 2009
    Publication date: February 10, 2011
    Inventors: Pieter Gijsman, Paulus Lambertus Alsters
  • Publication number: 20100324225
    Abstract: Controlled rheology (CR) polypropylene resins are prepared by a process comprising the step of contacting under scission conditions a non-CR-polypropylene resin having a low melt flow rate (MFR) with cyclic peroxide. The CR polypropylene resins made by the process of this invention are useful in manufacturing articles that exhibit reduced VOC emissions relative to CR-polypropylene resins made by an identical process except with non-cyclic peroxide. These low-VOC, CR-polypropylene resins are particularly useful in making non-metallic components for automobile interiors.
    Type: Application
    Filed: June 21, 2010
    Publication date: December 23, 2010
    Inventor: Michael Zummallen
  • Patent number: 7825196
    Abstract: Polyethylene modified by using radical initiators such as oxygen and peroxides sometimes has a yellow color which may be reduced or eliminated by incorporating additives such as polyethylene glycol, and/or neutralizing species such as alkali metal stearates, particularly calcium stearate, and zinc oxide.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: November 2, 2010
    Assignee: Fina Technology, Inc.
    Inventors: Vincent Barre, Tim Coffy, Cyril France Chevillard
  • Patent number: 7767767
    Abstract: A method of modifying polyethylene is disclosed. The method comprises contacting the polyethylene powder with ozone. The modified polyethylene exhibits an increase in melt elasticity and the complex viscosity at low shear rates. The rheological benefits are achieved without a significant reduction in the weight average molecular weight of the polyethylene. The modified polyethylene can be used in applications that require higher melt strength such as film or blow molding.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: August 3, 2010
    Assignee: Equistar Chemicals, LP
    Inventors: Andrew J. Scheie, Richard T. E. Sylvester
  • Patent number: 7750086
    Abstract: A process for improving the melt characteristics of propylene-ethylene random block and impact copolymers is provided. The process involves contacting a powder of the copolymer with a low level of free radical initiator followed by heating at a temperature below the melting point of the copolymer and above the free radical initiation temperature.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: July 6, 2010
    Assignee: Equistar Chemicals, LP
    Inventors: Andrew J. Scheie, Manivakkam J. Shankernarayanan
  • Publication number: 20100164133
    Abstract: A process is provided for extruding a bimodal polyethylene resin. The process includes providing a polyethylene homopolymer or copolymer resin having a bimodal molecular weight distribution; conveying the resin through an extruder having a feed zone in which the resin is not melted, a melt-mixing zone in which at least a portion of the resin is melted, and a melt zone in which the resin is in a molten state, each zone being partially filled with the resin; and contacting the molten resin in the melt zone with a gas mixture of 8 to 40% by volume O2. The resin can be further pelletized. The oxygen-tailored resin can be used to make polyethylene films having improved bubble stability.
    Type: Application
    Filed: March 11, 2010
    Publication date: July 1, 2010
    Applicant: Univation Technologies, LLC
    Inventors: Sandra D. Schregenberger, James F. Lottes, Pradeep P. Shirodkar, Porter C. Shannon
  • Publication number: 20100160570
    Abstract: Blown films and processes of forming the same are described herein. The processes generally include providing a bimodal ethylene based polymer, blending the bimodal ethylene based polymer with at least about 30 ppm peroxide to form modified polyethylene and forming the modified polyethylene into a blown film.
    Type: Application
    Filed: December 20, 2008
    Publication date: June 24, 2010
    Applicant: Fina Technology, Inc.
    Inventors: Cyril Chevillard, Jay Nguyen
  • Patent number: 7714072
    Abstract: The present invention is a multimodal polyethylene composition having (1) a density of at least about 0.940 g/cm3; (2) a melt flow index (I5) of from about 0.2 to about 1.5 g/10 mm; (3) a melt flow index ratio (I21/I5) of from about 20 to about 50; (4) a molecular weight distribution, Mw/Mn, of from about 20 to about 40; and (5) a bubble stability measured on an HS50S stationary extrusion system with an BF 10-25 die, HK 300 air ring, A8 take off, and WS8 surface winder, with a 100 mm die diameter having a 50 mm 21:1 L/D grooved feed extruder used for a film of about 6×10?6 m thickness of at least about 1.22 m/s line speed, at least about 45 kg/hr (0.013 kg/sec) output rate, or at least about 0.5 lb/hr/rpm (0.0000011 kg/s/rps) specific output rate or a combination thereof.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: May 11, 2010
    Assignee: Dow Global Technologies Inc
    Inventors: William J. Michie, Jr., Anthony C. Neubauer, Brad A. Cobler, Carl F. Baker
  • Patent number: 7683137
    Abstract: Polyethylene modified by using radical initiators such as oxygen and peroxides sometimes has a yellow color which may be reduced or eliminated by incorporating additives such as polyethylene glycol, and/or neutralizing species such as alkali metal stearates, particularly calcium stearate, and zinc oxide.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: March 23, 2010
    Assignee: Fina Technology, Inc.
    Inventors: Vincent Henri Barre, Tim J. Coffy, Cyril Chevillard
  • Patent number: 7632894
    Abstract: A process for cross-linking an elastomer-containing thermoplastic polyolefin composition comprising the steps of preparing a masterbatch by mixing and/or masticating an elastomeric polyolefin with a cross-linking co-agent, and optionally an additive, in the presence of a thermoplastic polyolefin; then, cooling the masterbatch obtained in the preceding step at least up to the solidification of the thermoplastic polyolefin; and finally mixing and/or masticating the masterbatch, after the cooling step, with a cross-linking agent and optionally an additive.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: December 15, 2009
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Dino Bacci, Roberta Marchini, Carlo Mulas
  • Patent number: 7622031
    Abstract: A method for producing an oxidized wax comprising (a) providing a uniform high molecular weight polyolefin resin feedstock having an average particle size smaller than about 30 mesh and a standard deviation in particle size of not greater than about 125 ?m; and (b) oxidizing the resin particles in their solid state to produce a wax having a predetermined acid number.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: November 24, 2009
    Assignee: Honeywell International Inc
    Inventors: Manfred K. Seven, Mark R. Wheeler
  • Publication number: 20090275704
    Abstract: Chemically crosslinked polycyclooctene having excellent shape recovery properties is prepared by ring-opening metathesis polymerization of cis-cyclooctene followed by chemical crosslinking. The crosslinked polycyclooctene can be shaped, the shape memorized, a new shape imparted with the original shape being recoverable by suitable temperature adjustment. The dependence of shape memory characteristics on degree of crosslinking was established. In addition to polycyclooctene, blends thereof with other materials such as SBR, EVA, polyurethane rubbers, and inorganic fillers can be utilized to provide chemically crosslinked products having excellent and tailored shape memory properties.
    Type: Application
    Filed: June 9, 2009
    Publication date: November 5, 2009
    Inventors: Patrick T. Mather, Changdeng Liu, Seung B. Chun, E. Bryan Coughlin