Polymer Derived From Acyclic Hydrocarbon Monomer Only Patents (Class 525/333.7)
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Patent number: 7767767Abstract: 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: GrantFiled: October 1, 2007Date of Patent: August 3, 2010Assignee: Equistar Chemicals, LPInventors: Andrew J. Scheie, Richard T. E. Sylvester
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Publication number: 20100190882Abstract: The present invention relates to methods for making cross-linked oxidation-resistant polymeric materials and preventing or minimizing in vivo elution of antioxidant from the antioxidant-containing polymeric materials. The invention also provides methods of doping polymeric materials with a spatial control of cross-linking and antioxidant distribution, for example, vitamin E (?-Tocopherol), and methods for extraction/elution of antioxidants, for example, vitamin E (?-tocopherol), from surface regions of antioxidant-containing polymeric materials, and materials used therewith also are provided.Type: ApplicationFiled: January 25, 2008Publication date: July 29, 2010Applicants: The General Hosital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Edward T. Kopesky, Ebru Oral
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Patent number: 7763681Abstract: Process for the preparation of polyalkenyl acylating agents which comprises: a. reacting at a temperature higher than 180° C. a reactive polyalkene, having a number average molecular weight Mn ranging from 500 to 5000 and having a content of terminal vinylidene groups greater than or equal to 30%, with an enophile; b. thermally carrying out the reaction for a time sufficient for having a conversion of the terminal vinylidene groups higher than 15%; c. completing the reaction always under heat in the presence of a reaction accelerator consisting of a Lewis acid selected from a tin, zinc, aluminum or titanium halide.Type: GrantFiled: July 11, 2007Date of Patent: July 27, 2010Assignee: ENI S.p.A.Inventors: Riccardo Rausa, Andrea Pucci, Luigi D'Elia, Francesco Ciardelli
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Publication number: 20100184918Abstract: Provided herein are telechelic polymers and methods for producing the same. In some embodiments, provided herein are compounds having the formula and methods for producing the same.Type: ApplicationFiled: January 16, 2009Publication date: July 22, 2010Inventors: Robson F. Storey, David L. Morgan
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Patent number: 7750086Abstract: 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: GrantFiled: February 27, 2006Date of Patent: July 6, 2010Assignee: Equistar Chemicals, LPInventors: Andrew J. Scheie, Manivakkam J. Shankernarayanan
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Publication number: 20100160497Abstract: The invention provides compositions containing at least one functionalized polyolefin, and in particular, to compositions containing at least one functionalized ethylene interpolymer, which has a melt viscosity less than 50,000 cP at 350° F. (177° C.) and a molecular weight distribution (Mw/Mn) from about 1 to 5. The invention also provides adhesive formulations containing the same. The invention also relates to the preparation of the functionalized interpolymers, by reacting, for example, such an ethylene interpolymer with the following: a) at least one unsaturated compound, containing at least one heteroatom, and b) at least one initiator.Type: ApplicationFiled: June 11, 2007Publication date: June 24, 2010Inventors: Teresa P Karjala, Selim Yalvac, Benjamin R. Rozenblat, Cynthia L. Rickey
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Publication number: 20100152708Abstract: Substrates, optionally coated with an undercoating layer, having grafted there from one or more non-fouling materials are described herein. The non-fouling, polymeric material can be grafted from a variety of substrate materials, particularly polymeric substrates and/or polymeric undercoating layers. The graft-from techniques described herein can result in higher surface densities of the non-fouling material relative to graft-to formulations. Graft-from methods can be used to produce covalently tethered polymers. The compositions described herein are highly resistant protein absorption, particularly in complex media and retain a high degree of non-fouling activity over long periods of time. The compositions described herein may also demonstrate antimicrobial and/or anti-thrombogenic activity.Type: ApplicationFiled: December 7, 2009Publication date: June 17, 2010Inventors: Jun Li, Trevor Squier, Zheng Zhang, Chad Huval, William Shannan O'Shaughnessy, Michael Hencke, Michael Bouchard, Christopher R. Loose
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Publication number: 20100152376Abstract: The invention relates to a product as obtained by reaction of: a) At least one polyol selected from the group consisting of a linear or branched, trihydric or tetrahydric alcohol and a linear pentahydric or hexahydric alcohol; b) At least one melamine comprising compound; and c) At least one dendritic polymer substituted by hydroxy groups; and to flame retardant compositions comprising these products.Type: ApplicationFiled: December 3, 2007Publication date: June 17, 2010Applicant: CIBA CORPORATIONInventor: Hendrik Wermter
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Publication number: 20100143712Abstract: The invention relates to a silane-crosslinking adhesive or sealant containing a polymer that is made up of an organic backbone that carries at least two alkoxy- and/or acyloxysilyl groups, and at least one N-silylalkylamide as an additive. The invention also relates to use of the N-silylalkylamide as an additive in silane-crosslinking adhesives or sealants.Type: ApplicationFiled: February 9, 2010Publication date: June 10, 2010Applicant: Henkel AG & Co. KGaAInventors: Thomas Plantenberg, Ralf Dunekake, Klaus Helpenstein, Johann Klein
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Publication number: 20100145286Abstract: Substrates, optionally coated with an undercoating, having grafted thereto one or more non-fouling materials are described herein. The non-fouling, polymeric material can be grafted to a variety of functionalized substrate materials, particularly polymeric substrates and/or polymeric undercoatings immobilized on a substrate. The compositions described herein are highly resistant protein absorption, particularly in complex media and retain a high degree of non-fouling activity over long periods of time. The compositions described herein may also demonstrate antimicrobial and/or anti-thrombogenic activity.Type: ApplicationFiled: December 7, 2009Publication date: June 10, 2010Inventors: Zheng Zhang, Chad Huval, William Shannan O'Shaughnessey, Michael Hencke, Trevor Squier, Jun Li, Michael Bouchard, Christopher R. Loose
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Publication number: 20100143651Abstract: The invention provides polyolefin blend compositions of polar and/or non-polar polymers, with at least one functionalized polyolefin polymer selected from the group consisting of: amine functionalized, hydroxyl functionalized, imide functionalized, anhydride functionalized, or carboxylic acid functionalized polyolefin polymers. The invention also provides methods for making the functionalized polyolefin polymer. The invention also provides for materials and articles containing at least one component prepared from such compositions.Type: ApplicationFiled: December 17, 2007Publication date: June 10, 2010Applicant: Dow Global Technologies Inc.Inventors: H. Craig Silvis, Stephen F. Hahn, David F. Pawlowski, Patricia Ansems, Laura K. Mergenhagen, Hamed Lakrout, Ashish Batra, Laura Bauerle Weaver, Lawrence J. Effler, Katja Oswald
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Publication number: 20100119746Abstract: An object of the present invention is to provide a resin composition suitable for adhering a layer of a base material, such as polyolefins, and a layer of a barrier resin, such as ethylene-vinyl alcohol copolymers. The object is achieved by a resin composition (A) including: a thermoplastic resin (a1) having functional groups of at least one kind selected from the group consisting of a boronic acid group and boron-containing groups capable of being converted into a boronic acid group in the presence of water, a polyolefin (a2) not having the functional groups, and a thermoplastic elastomer (a3) not having the functional groups, wherein the thermoplastic resin (a1) is contained 1 to 20 parts by mass and the thermoplastic elastomer (a3) is contained 3 to 50 parts by mass in terms of 100 parts by mass of the polyolefin (a2).Type: ApplicationFiled: January 28, 2008Publication date: May 13, 2010Applicant: Kuraray Co., Ltd.Inventors: Takeyuki Igarashi, Tomonori Murata, Tomoyuki Watanabe
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Publication number: 20100120987Abstract: There are provided an organic fiber-reinforced composite resin composition which is good in fiber dispersion, excellent in appearance, excellent in mechanical properties such as tensile elongation at break or impact strength and easy in thermal recycle; and a molded article obtained therefrom. An organic fiber-reinforced composite resin composition comprising (a) 60 to 95% by weight of a polyolefin resin (provided that an acid-modified polyolefin resin is excluded) and (b) 40 to 5% by weight (provided that (a)+(b)=100% by weight) of organic fiber to which a polar resin (provided that an acid-modified polyolefin resin is excluded) is attached, or an organic fiber-reinforced composite resin composition comprising organic fiber in an amount of 10 to 200 parts by weight based on 100 parts by weight of a polyolefin resin and having an Izod impact strength at ?40° C. of 10 kJ/m2 or more, and further, an organic fiber-reinforced composite resin molded article obtained therefrom.Type: ApplicationFiled: November 6, 2007Publication date: May 13, 2010Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Masatoshi Oomori, Takayuki Itou, Takakazu Yoshihara, Taku Kitade
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Publication number: 20100108357Abstract: The present invention relates to a crosslinkable polymer composition comprising an unsaturated polyolefin having a total amount of carbon-carbon double bonds/1000 carbon atoms of at least 0.38, and at least one crosslinking agent being a carbon-carbon initiator that is free of peroxide groups and capable of thermally decomposing into carbon-based free radicals by breaking at least one carbon-carbon single bond, such as 3,4-dimethyl-3,4-diphenylhexane.Type: ApplicationFiled: December 19, 2007Publication date: May 6, 2010Applicant: BOREALIS TECHNOLOGY OYInventors: Annika Smedberg, Bill Gustafsson
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Patent number: 7709580Abstract: The present invention is directed to a method for preparation of polyolefins containing exo-olefin chain ends. The method involves quenching a cationic quasi-living polyolefin polymer system with a nitrogen-containing five-membered aromatic ring having at least two hydrocarbyl substituent compounds attached to the ring.Type: GrantFiled: August 19, 2005Date of Patent: May 4, 2010Assignees: Chevron Oronite Company LLC, The University of Sourthern MississippiInventors: Casey D. Stokes, Kelby Simison, Robson F. Storey, James J. Harrison
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Patent number: 7705090Abstract: The present invention is directed to a method for preparing polyolefins containing a high percentage of exo-olefin chain ends. The method involves ionizing a polyolefin containing tert-chloride chain ends and reacting the ionized polyolefin with one or more nitrogen-containing five-membered aromatic ring or one or more hindered secondary or tertiary amines, or mixtures thereof.Type: GrantFiled: August 19, 2005Date of Patent: April 27, 2010Assignees: Chevron Oronite Company LLC, The University of Southern MississippiInventors: Casey D. Stokes, Kelby Simison, Robson F. Storey, James J. Harrison
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Publication number: 20100087602Abstract: A method comprising contacting a polypropylene, an acrylate-containing compound, and an initiator to form a composition, and reactive extruding the composition to form a polymer blend. A method comprising contacting a polypropylene, a multi-functional acrylate monomer, and an initiator to form a composition, reactive extruding the composition to form a reactive extruded composition, and forming the reactive extruded composition into a film wherein the reactive extruded composition has a melt flow rate that is reduced by equal to or greater than 5% when compared to neat polypropylene.Type: ApplicationFiled: October 8, 2008Publication date: April 8, 2010Applicant: FINA TECHNOLOGY, INC.Inventors: Fengkui Li, Ryan L. Albores, John Bieser
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Patent number: 7687580Abstract: The present invention relates to a method to produce highly branched polymers with a polyolefin backbone structure of ethylene and precise control of the nature of the branching. In particular, the distribution of branch length and number of branches can be more precisely controlled via the polymerization method of the present invention. The method comprises using anionic chemistry to make unsaturated polydienes with a well-defined, highly-branched structure, and then hydrogenating these polydienes to form highly branched or dendritic saturated hydrocarbon polymers. Highly branched or dendritic polyethylene, ethylene-propylene copolymer and atactic polypropylene are among the saturated hydrocarbon polymers that can be anionically synthesized via the proper selection of diene monomer type, coupling agent, and hydrogenation conditions.Type: GrantFiled: December 8, 2005Date of Patent: March 30, 2010Assignee: ExxonMobil Research and Engineering CompanyInventors: David J. Lohse, César Garcia-Franco, Nikos Hadjichristidis
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Patent number: 7683137Abstract: 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: GrantFiled: July 5, 2005Date of Patent: March 23, 2010Assignee: Fina Technology, Inc.Inventors: Vincent Henri Barre, Tim J. Coffy, Cyril Chevillard
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Patent number: 7683134Abstract: A process for the manufacture of maleated polypropylenes having an acid number greater than 6, a yellowness index color of no greater than 76, and a number average molecular weight of at least 20,000. The process for making the maleated polypropylenes includes forming a mixture of molten polypropylene and molten maleic anhydride in a reactor, introducing a free radical initiator into the molten mixture to produce a product having maleic anhydride grafted onto the polypropylene, and recovering a high acid number, high molecular weight maleated polypropylene of low color from the reactor.Type: GrantFiled: July 21, 2008Date of Patent: March 23, 2010Assignee: Eastman Chemical CompanyInventors: Thomas David Roberts, Stephen Wayne Coe
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Publication number: 20100068783Abstract: A process for producing a substrate having an adhesive surface, which process comprises: (a) contacting the substrate with a carbene precursor, which carbene precursor is a compound of the following formula (1): whose substituent groups are SP defined herein, provided that when R is aryl or heteroaryl, said aryl or heteroaryl may be substituted by one, two, three, four or five groups, which groups are independently selected from various groups including -LB-WB; and (b) either: (i) when WA or WB comprises an adhesive functional group, generating a carbene reactive intermediate from the carbene precursor so that it reacts with the substrate to functionalise the surface, thereby yielding said substrate having an adhesive surface; or (ii) when WA or WB comprises a group which is a precursor of an adhesive functional group, generating a carbene reactive intermediate from the carbene precursor so that it reacts with the substrate to functionalise the surface, and (c) converting said group which is a precursor intoType: ApplicationFiled: August 22, 2007Publication date: March 18, 2010Applicant: ISIS INNOVATION LIMITEDInventors: Mark Moloney, Jon-Paul Griffiths
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Publication number: 20100069576Abstract: Provided are processes comprising crosslinking polyethylene or using crosslinked polyethylene. Furthermore, the processes may include compacting and/or sintering the polyethylene.Type: ApplicationFiled: October 30, 2006Publication date: March 18, 2010Applicant: SMITH & NEPHEW ORTHOPAEDICS AGInventors: Hans Schmotzer, Yvo Dirix, Paul Smith, Theo Tervoort, Lorenz Brunner
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Patent number: 7674863Abstract: Esterified polyalkene/UAR copolymer reaction products useful as (1) a friction modifier for lubricating oils such as automatic transmission fluids to improve torque capacity and anti-shudder durability and for continuous variable transmissions (CVTs), (2) a friction modifier for fuels or (3) a cold flow improver for diesel fuels are provided. The esterified copolymer reaction product may be used as is or can be further derivatized (e.g., by post treatment of the esterified copolymer reaction product with, for example, ethylene carbonate or boric acid).Type: GrantFiled: July 18, 2007Date of Patent: March 9, 2010Assignee: Chevron Oronite Company LLCInventor: Kenneth D. Nelson
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Patent number: 7659349Abstract: Degraded polypropylene (co)polymer modified with a linear dialkylperoxide in order to retain its impact strength and a process for its preparation.Type: GrantFiled: April 10, 2006Date of Patent: February 9, 2010Assignee: Total Petrochemicals Research FeluyInventor: Kristien Roegiers
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Publication number: 20100029858Abstract: An antioxidant combined with UHMWPE prior to subjecting the UHMWPE to crosslinking irradiation. In one exemplary embodiment, the antioxidant is tocopherol. After the antioxidant is combined with the UHMWPE, the resulting blend may be formed into slabs, bar stock, and/or incorporated into a substrate, such as a metal, for example. The resulting product may then be subjected to crosslinking irradiation. In one exemplary embodiment, the UHMWPE blend is preheated prior to subjecting the same to crosslinking irradiation. Once irradiated, the UHMWPE blended product may be machined, packaged, and sterilized in accordance with conventional techniques.Type: ApplicationFiled: October 14, 2009Publication date: February 4, 2010Applicant: ZIMMER, INC.Inventors: Alicia Rufner, John Knight, Toni Rowe, Dirk Pletcher, Ray Gsell, Hallie E. Brinkerhuff, Werner Schneider
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Publication number: 20100022678Abstract: UHMWPE is exposed to crosslinking radiation and than heated utilizing infrared radiation in an inert environment. In one exemplary embodiment, the infrared radiation is provided by an infrared heater having a tungsten heating element with a quartz tube. In this embodiment, the infrared radiation may have the wavelength from about 1.0 micron to about 1.5 microns. In another exemplary embodiment, the UHMWPE is compression molded into bars prior to exposure to the crosslinking radiation.Type: ApplicationFiled: March 23, 2009Publication date: January 28, 2010Applicant: ZIMMER, INC.Inventors: Donald Yakimicki, Brian H. Thomas, Alicia Rufner, Dirk Pletcher, Hallie E. Brinkerhuff, Michael E. Hawkins
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Publication number: 20100022677Abstract: UHMWPE is exposed to crosslinking radiation and than heated utilizing infrared radiation. In one exemplary embodiment, the infrared radiation is provided by an infrared heater having a tungsten heating element with a quartz tube. In this embodiment, the infrared radiation may have the wavelength from about 1.0 micron to about 1.5 microns. In another exemplary embodiment, the UHMWPE is compression molded into bars prior to exposure to the crosslinking radiation.Type: ApplicationFiled: July 24, 2008Publication date: January 28, 2010Applicant: ZIMMER, INC.Inventors: Donald Yakimicki, Brian H. Thomas, Alicia Rufner, Dirk Pletcher, Hallie E. Brinkerhuff, Michael E. Hawkins
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Patent number: 7645837Abstract: A chlorinated propylene-based polymer of the present invention having a weight average molecular weight (Mw) as measured by gel permeation chromatography (GPC) of 5,000 to 100,000 and a chlorine content of 0.1 to 70% by mass has the following properties: (1) it has a high solubility in a non-aromatic solvent having a low environmental burden even when it has a low degree of chlorination, and (2) it can be inhibited from suffering a decrease in the properties inherent to polypropylenes, such as durability, mechanical properties, appearance and hydrophobicity, by regulating its degree of chlorination at a low value.Type: GrantFiled: August 27, 2004Date of Patent: January 12, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Ryo Aburatani, Masanori Sera, Yutaka Minami
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Publication number: 20100000147Abstract: Polyolefinic amines may be produced in a reaction comprising contacting an olefin or a polyolefin with an azo compound under free radical conditions to form a polyolefinic nitrile having an average molecular weight of at least 250, followed by reducing the polyolefinic nitrile to a corresponding polyolefinic amine. The polyolefinic amines produced by the reaction may be included as a detergent in compositions, such as fuel compositions, additive compositions, and/or carrier compositions.Type: ApplicationFiled: July 1, 2009Publication date: January 7, 2010Applicant: Afton Chemical CorporationInventor: William Jay Colucci
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Publication number: 20090318623Abstract: A method of decomposing an organic compound includes decomposing an organic compound by alkyl carbonate at 250° C. or more. The organic compound includes a cross-linked polymer. The cross-linked polymer includes a polymer cross-linked by organic peroxide cross-linking, radiation cross-linking, or silane cross-linking The alkyl carbonate includes dimethyl carbonate or diethyl carbonate.Type: ApplicationFiled: June 22, 2009Publication date: December 24, 2009Applicant: HITACHI CABLE, LTD.Inventors: Shingo ASHIHARA, Toshiharu GOTO, Takanori YAMAZAKI
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Patent number: 7635725Abstract: Highly crystalline, oxidation resistant crosslinked polymeric materials such as crosslinked ultrahigh molecular weight polyethylenes having high wear resistance, enhanced stiffness, enhanced tensile strength, a high level of fatigue and crack propagation resistance, and enhanced creep resistance can be manufactured by the new methods described herein.Type: GrantFiled: February 21, 2006Date of Patent: December 22, 2009Assignee: The Brigham and Women's Hospital, Inc.Inventors: Anuj Bellare, Thomas S. Thornhill
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Patent number: 7632894Abstract: 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: GrantFiled: May 29, 2002Date of Patent: December 15, 2009Assignee: Basell Poliolefine Italia s.r.l.Inventors: Dino Bacci, Roberta Marchini, Carlo Mulas
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Patent number: 7622532Abstract: The present invention relates generally to synthesis of radioactive material, such as a tritiated polymer, and an apparatus for generating electrical current from the nuclear decay process of a radioactive material. In one embodiment, the invention relates to an energy cell (e.g., a battery) for generating electrical current derived from particle emissions occurring within a radioactive material such as a tritiated polymer) on pore walls of a porous semiconductor. The radioactive material may be introduced into the energy cell by a wetting process.Type: GrantFiled: February 16, 2007Date of Patent: November 24, 2009Assignees: William Marsh Rice University, BetaBatt, Inc.Inventors: Larry L. Gadeken, Paul S. Engel, Kenneth S. Laverdure
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Patent number: 7622031Abstract: 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: GrantFiled: January 15, 2007Date of Patent: November 24, 2009Assignee: Honeywell International IncInventors: Manfred K. Seven, Mark R. Wheeler
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Publication number: 20090275704Abstract: 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: ApplicationFiled: June 9, 2009Publication date: November 5, 2009Inventors: Patrick T. Mather, Changdeng Liu, Seung B. Chun, E. Bryan Coughlin
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Patent number: 7589150Abstract: Disclosed are polypropylene homopolymers, copolymers and mono and polyfunctional polypropylene derivatives as well as methods of preparing them. These polymers are prepared in the eresence of a metallocene catalyst and are isotactic. Applications using these polymers include but are not limited to, electrophotography toners, melt facture reduction agents, and compatibilizers.Type: GrantFiled: December 12, 2001Date of Patent: September 15, 2009Assignee: Baker Hughes IncorporatedInventors: Paul Hanna, Satyarayana Nistala, Leon L. Otte, Kent Fudge, Thomas J. Clark, David D. Truong, John Woods
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Patent number: 7579411Abstract: The invention relates to hydroxylamine esters and polymerizable compositions comprising these hydroxylamine esters and an ethylenically unsaturated monomer or oligomer and methods for achieving a controlled increase in the molecular weight of polyethylene.Type: GrantFiled: February 12, 2008Date of Patent: August 25, 2009Assignee: Ciba Specialty Chemicals CorporationInventors: Michael Roth, Rudolf Pfaendner, Peter Nesvadba, Marie-Odile Zink
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Publication number: 20090209158Abstract: Provided is a propylene polymer composition comprising a neat polymer and a hydroxylamine ester compound suitable for preparing low melt viscosity polymers useful in spinning, melt blowing, extruding and the like. The polymer composition exhibits near-neat propylene polymer melt viscosity such that it can be readily pelletized for transport or use by an end user other than the composition manufacturer. Also provided is a process for preparing the polymer composition, pelletizing it, melt mixing the composition pellets at a temperature and for a time sufficient to allow viscosity breaking of the composition, and melt blowing or spunbonding the resulting low melt viscosity polymer to produce high quality non-woven fabrics. Finally, a non-woven fabric with superior barrier properties made from the polymer composition is provided.Type: ApplicationFiled: March 28, 2007Publication date: August 20, 2009Inventors: Galen C. Richeson, Bryan G. Wells
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Patent number: 7576161Abstract: Disclosed is a method of preparing terminally functionalized telechelic polymers using a cationic living polymer product or a terminal tert-chloride chain end of a carbocationic quasiliving polymer product, which comprises quenching the polymer product with an N-substituted pyrrole to thereby functionalize the N-substituted pyrrole at the terminal reactive polymer chain end(s). Also disclosed are the terminal functionalized polyisobuyl N-substituted pyrrole compounds where the polyisobutyl group is substituted at the 2 and 3 position of the N-substituted pyrrole.Type: GrantFiled: July 20, 2005Date of Patent: August 18, 2009Assignees: Chevron Oronite Company LLC, The University of Southern MississippiInventors: Casey D. Stokes, Robson F. Storey, James J. Harrison
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Patent number: 7569642Abstract: A higher olefin polymer having a polar group which is produced by subjecting to an incorporation reaction of a polar compound or halogen compound into a higher ?-olefin polymer satisfying the requirements of the following (1) and (2), which is obtained by polymerizing one or more higher ?-olefins having 10 or more carbon atoms or copolymerizing one or more higher ?-olefins having 10 or more carbon atoms with one or more other olefins and a method for producing a higher olefin polymer having a polar group which is obtained by polymerizing one or more higher ?-olefins having 10 or more carbon atoms or copolymerizing one or more higher ?-olefins having 10 or more carbon atoms with one or more other olefins to form a higher ?-olefins polymer satisfying the requirements of the following (1) and (2) and subsequently subjecting to an incorporation reaction of a polar compound or halogen compound into the higher ?-olefin polymer.Type: GrantFiled: September 28, 2004Date of Patent: August 4, 2009Assignee: Idemitsu Kosan Co., Ltd.Inventors: Ryo Aburatani, Masanori Sera, Yutaka Minami
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Patent number: 7566761Abstract: The present invention provides an olefin polymer having a narrow molecular weight distribution and a specific molecular weight, an olefin polymer having a functional group introduced at the terminal, a tapered polymer containing a segment wherein monomer composition continuously changes in the polymer chain, an olefin polymer having different segments which are bonded to each other, and a process for preparing these polymers. The olefin polymers of the invention are polymers of olefins of 2 to 20 carbon atoms and have a number-average molecular weight of not less than 500 and Mw/Mn of not more than 1.5.Type: GrantFiled: September 29, 2004Date of Patent: July 28, 2009Assignee: Mitsui Chemicals, Inc.Inventors: Makoto Mitani, Yasunori Yoshida, Junichi Mohri, Kazutaka Tsuru, Seiichi Ishii, Shinichi Kojoh, Tomoaki Matsugi, Junji Saito, Naoto Matsukawa, Shigekazu Matsui, Takashi Nakano, Hidetsugu Tanaka, Norio Kashiwa, Terunori Fujita
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Publication number: 20090162633Abstract: A material for vibration control of the invention includes a propylene polymer (A) containing a constitutional unit (a) derived from propylene in the proportion of 40 to 100 mol % and a constitutional unit (b) derived from ?-olefin having 2 to 20 carbon atoms excluding propylene in the proportion of 60 to 0 mol % [provided that the total of (a) and (b) is 100 mol %], and having a melting point measured by DSC of 90° C. or below or no observed melting point, and the material has excellent vibration controllability such as vibration damping property, vibration preventing property, sound insulating property, and sound absorbing property.Type: ApplicationFiled: November 14, 2006Publication date: June 25, 2009Inventors: Ryoji Mori, Masahiko Okamoto, Takashi Nakagawa, Shigenobu Ikenaga
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Patent number: 7550538Abstract: Chlorosulfonated propylene/olefin elastomers containing 0.5-55 weight percent chlorine and 0.15 to 5 weight percent sulfur are prepared from metallocene catalyzed propylene/olefin copolymer base resins having a ratio of Mw/Mn less than 3.5 and a copolymerized propylene content of 70-98 weight percent.Type: GrantFiled: March 12, 2008Date of Patent: June 23, 2009Assignee: DuPont Performance Elastomers LLCInventor: Avinash C. Gadkari
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Patent number: 7524913Abstract: An olefin polymer having greater than 95 percent chain end unsaturation, where greater than 80 percent of said unsaturation comprises a 1,2-disubstituted olefinic unsaturation, especially polymers comprising in polymerized form 4-methyl-1-pentene and more especially highly isotactic polymers, a process of manufacture, methods to functionalize and articles formed therefrom.Type: GrantFiled: January 21, 2005Date of Patent: April 28, 2009Assignee: Dow Global Technolgies, Inc.Inventors: John R. Briggs, Edmund M. Carnahan, Phillip D. Hustad, Tia L. Jackson
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Publication number: 20090105364Abstract: A medical prosthesis for use within the body which is formed of radiation treated ultra high molecular weight polyethylene having substantially no detectable free radicals, is described. Preferred prostheses exhibit reduced production of particles from the prosthesis during wear of the prosthesis, and are substantially oxidation resistant. Methods of manufacture of such devices and material used therein are also provided.Type: ApplicationFiled: December 12, 2008Publication date: April 23, 2009Applicants: The General Hospital Corporation, Massachusetts Institute of TechnologyInventors: Edward W. Merrill, William H. Harris, Murali Jasty, Orhun Muratoglu, Charles R. Bragdon, Daniel O. O'Connor, Premnath Venugopalan
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Publication number: 20090105452Abstract: Bis-diazo, triaryl and aryldiazo-N-arylphenazonium quencher moieties, substituted with electron-withdrawing and electron-donating substituents which induce polarity in the delocalized aryl/diazo ring systems, are useful as labels when attached to biomolecules such as polynucleotides, nucleosides, nucleotides and polypeptides. The quencher moieties are non-fluorescent and accept energy transfer from fluorescent reporter labels by any energy-transfer mechanism, such as FRET. Fluorescence quencher compositions are useful in preparing quencher labeled biomolecules for various molecular biology assays based on fluorescence detection.Type: ApplicationFiled: April 4, 2008Publication date: April 23, 2009Applicant: Applera CorporationInventors: Gregory J. EWING, Deborah Kay Fieri, Khairuzzaman Bashar Mullah, Ronald J. Graham
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Patent number: 7501476Abstract: Disclosed is a method for preparing polyolefins containing vinylidine end groups from quasiliving carbocationically terminated polyolefin polymers by contacting the quasiliving carbocationically terminated polymer with a suitable azole quenching agent and substituted derivatives thereof.Type: GrantFiled: February 16, 2006Date of Patent: March 10, 2009Assignees: Chevron Oronite Company, LLC, The University of Southern MississippiInventors: Casey D. Stokes, Robson F. Storey
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Publication number: 20090035594Abstract: Rheologically-modified functionalized polyolefins and tie-layer adhesive blends formulated therewith which exhibit improved adhesion in multi-layer barrier films are provided. Multi-layer barrier shrink films having improved adhesion are also disclosed.Type: ApplicationFiled: August 1, 2007Publication date: February 5, 2009Inventors: Chun D. Lee, Maged G. Botros
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Publication number: 20080319137Abstract: An antioxidant combined with UHMWPE prior to subjecting the UHMWPE to crosslinking irradiation. In one exemplary embodiment, the antioxidant is tocopherol. After the antioxidant is combined with the UHMWPE, the resulting blend may be formed into slabs, bar stock, and/or incorporated into a substrate, such as a metal, for example. The resulting product may then be subjected to crosslinking irradiation. In one exemplary embodiment, the UHMWPE blend is preheated prior to subjecting the same to crosslinking irradiation. Once irradiated, the UHMWPE blended product may be machined, packaged, and sterilized in accordance with conventional techniques.Type: ApplicationFiled: April 10, 2008Publication date: December 25, 2008Applicant: ZIMMER, INC.Inventors: Alicia Rufner, John Knight, Toni Rowe, Dirk Pletcher, Ray Gsell, Hallie E. Brinkerhuff, Werner Schneider
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Publication number: 20080311812Abstract: Copolymers, especially multi-block copolymer containing therein two or more segments or blocks differing in chemical or physical properties, are prepared by polymerizing propylene, 4-methyl-1-pentene, or other C4-8?-olefin and one or more copolymerizable comonomers, especially ethylene in the presence of a composition comprising the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.Type: ApplicationFiled: March 17, 2005Publication date: December 18, 2008Inventors: Daniel J. Arriola, Edmund M. Carnahan, David D. Devore, Phillip D. Hustad, Roger L. Kuhlman, Timothy T. Wenzel
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Patent number: 5220471Abstract: A thin film magnetic head comprises a slider and a reading/writing element attached to an end surface of the slider, wherein the reading/writing element is disposed at an end surface in the longitudinal direction of the slider when the longitudinal direction and the width direction are determined on the surface which faces a magnetic recording medium, of the slider, and the slider has a linear groove in the surface opposite the surface which faces the magnetic recording medium, at the intermediate portion in the width direction of the slider and along the longitudinal direction.Type: GrantFiled: June 26, 1992Date of Patent: June 15, 1993Assignee: TDK CorporationInventor: Mikio Matsuzaki