Patents Examined by Roberto Rabago
  • Patent number: 9932434
    Abstract: A nitrile group-containing copolymer rubber contains ?,?-ethylenically unsaturated nitrile monomer units in a ratio of 10 to 60 wt % and has a Z-average radius of gyration of 100 nm or more. Preferably, the nitrile group-containing copolymer rubber has an iodine value of 120 or less. Further, preferably, the nitrile group-containing copolymer rubber has a plasticity number of 14 to 90. It is possible to provide a nitrile group-containing copolymer rubber able to give a cross-linked rubber excellent in tensile stress, compression set resistance, and low heat buildup property.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: April 3, 2018
    Assignee: ZEON CORPORATION
    Inventors: Sayaka Inoue, Nobuyoshi Emori
  • Patent number: 9932468
    Abstract: C2C3 random copolymer composition with an improved balance between sealing initiation temperature (SIT) and melting point (Tm), i.e. low SIT and high melting point. In addition the inventive composition shows a broad sealing window, low hexane solubles and good optical properties, like low haze.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: April 3, 2018
    Assignee: BOREALIS AG
    Inventors: Cornelia Tranninger, Luigi Resconi, Karlheinz Friedrich
  • Patent number: 9918478
    Abstract: This invention is about a water soluble antimicrobial polyacrylate silver salt. The molecular chain of the polyacrylate silver salt comprises sodium carboxylic group (—COONa) and silver carboxylic group (—COOAg). It is synthesized by dissolving an polyacrylate polymer comprising sodium carboxylic group (—COONa) in water and then exchanging the sodium carboxylic group of the polyacrylate polymer to silver carboxylic group (—COOAg) using silver salt in aqueous solution. Ultrafiltration membrane is used to remove the sodium salt generated from the metal ion exchanging procedure. An aqueous solution of water soluble antimicrobial polyacrylate silver salt with very few impurity is obtained. The water soluble antimicrobial polyacrylate silver salt is then obtain-ned from the aqueous solution. The molar ratio of —COOAg to —COONa of thus obtained water soluble antimicrobial polyacrylate silver salt can be as high as 66/34.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: March 20, 2018
    Inventor: Shyh Yeu Wang
  • Patent number: 9907881
    Abstract: The material according to the invention is a hydrophobic, cross-linked, acrylic copolymer of at least the following monomers: an arylalkoxy-acrylate different from a 2-phenoxy-(2-ethoxy)n-acrylate with 4?n?6; a 2-phenoxy-(2-ethoxy)n-acrylate with 4?n?6, preferably 2-phenoxy-tetraethylene-glycol acrylate; a hydroxylated acrylate; a hydroxylated methacrylate; an ethoxylated diol diacrylate; and an ethoxylated diol dimethacrylate. It is obtained in one single step of radical polymerization, in the presence of a transfer agent during the cross-linking. It thus has a physical structure corresponding to a three-dimensional macromolecular network with hanging chains. This material is used for manufacturing intraocular lenses (1) with low glistening that are not self-adhering.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: March 6, 2018
    Assignee: ACRYLIAN
    Inventor: Jean Terrisse
  • Patent number: 9896577
    Abstract: Polymer composite comprising propylene copolymer composition having a comonomer content in the range of 2.5 to 10 wt. -%, the comonomers are C5 to C12 ?-olefins, and a low-crystalline polymer having a melting temperature of below 120° C., wherein further said polymer composite has (i) a melting temperature of at least 140° C., and (ii) a heat sealing initiation temperature (SIT) of not more than 110° C.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: February 20, 2018
    Assignee: Borealis AG
    Inventors: Kristin Reichelt, Luigi Resconi
  • Patent number: 9884933
    Abstract: A comb copolymer having a backbone of 2-acrylamido-2-methylpropanesulfonic acid, with grafted lateral side segments of poly(N-alkylacrylamide) or poly(N,N-dialkylacrylamide), is provided. A process for the preparation of the comb copolymer includes reacting a compound of formula (II) with a compound of formula (III) in a (tert-butanol)-water mixture, to obtain a poly(N-alkylacrylamide) or poly(N,N-dialkylacrylamide) telomere of formula (I); reacting in tert-butanol the telomer of formula (I) with an acid chloride of formula (IV) to obtain a solution of the macromonomer of formula (V); and copolymerizing in tert-butanol the macromonomer of formula (V) with an ammonium salt of 2-acrylamido-2-methylpropanesulfonic acid.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: February 6, 2018
    Assignee: SOCIETE D'EXPLOITATION DE PRODUITS POUR LES INDUSTRIES CHIMIQUES SEPPIC
    Inventors: Olivier Braun, Paul Mallo
  • Patent number: 9884934
    Abstract: Provided is a production method which can attain exfoliating treatment of graphite and a process of grafting a polymer onto exfoliated graphite simultaneously and thus makes it possible to easily obtain an exfoliated graphite-polymer composite material in a short time. A method for producing an exfoliated graphite-polymer composite material includes a step of mixing graphite or primary exfoliated graphite, a depolymerizable monomer of which the polymer is decomposed by heating to generate radicals and also to form a monomer or an oligomer, or the polymer A of the monomer, or a polymer B which forms radicals at a temperature close to its decomposition temperature to obtain a mixture; and a heating step of putting the mixture in a non-open container to heat the mixture to a first temperature range from the ceiling temperature or higher to the onset decomposition temperature or lower, or to a temperature higher than the first temperature range.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: February 6, 2018
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Akira Nakasuga, Shouji Nozato, Takuya Wada, Hiroshi Yoshitani
  • Patent number: 9879121
    Abstract: In an example, a process includes polymerizing a mixture that includes an ethylene monomer, a propylene monomer, and a diene monomer to form an ethylene-propylene-diene (EPDM) terpolymer using ring-opening metathesis polymerization (ROMP). The process further includes chemically reacting the EPDM terpolymer with a norbornene-based phosphinate cross-linking material to form a flame-retardant, cross-linked EPDM rubber.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: January 30, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sarah K. Czaplewski, Joseph Kuczynski, Jason T. Wertz, Jing Zhang
  • Patent number: 9873782
    Abstract: The present disclosure is related to bimodal high-density polyethylene polymer compositions with increased high melt strength and good processability comprising a base resin which has a density of about 945 kg/m3 to about 955 kg/m3, and comprises an ethylene polymer (A) having a density of at least about 968 kg/m3, in an amount ranging from 45% to 55% by weight and an ethylene polymer (B) having a density lower than the density of polymer (A) wherein said composition has a complex viscosity at a shear rate of 0.01 rad/s ranging from about 200 to about 450 kPa·s and a complex viscosity at a shear rate of 100 rad/s ranging from about 1900 to about 2500 Pa·s. The present disclosure also relates to methods of making, and using the present compositions, and to articles made from there composition, and preferably to pipes and fittings.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: January 23, 2018
    Assignee: INEOS OLEFINS & POLYMERS USA, a division of INEOS USA LLC
    Inventors: Joshua Allen Cottle, Mark Anthony Gessner, Robert Ernest Sander, Luc Dheur
  • Patent number: 9873958
    Abstract: Fibers made a polyethylene composition, and method of making the same. The polyethylene composition comprises less than or equal to 100 percent by weight of the units derived from ethylene and less than 20 percent by weight of units derived from one or more ?-olefin comonomers; wherein said polyethylene composition has a density in the range of 0.930 to 0.960 g/cm3, a molecular weight distribution (Mw/Mn) in the range of 1.70 to 3.5, a melt index (I2) in the range of 1 to 300 g/10 minutes, a molecular weight distribution (Mz/Mw) in the range of less than 2.5, a shear viscosity in the range of 20 to 250 Pascal-s at 3000 s?1 shear rate measured at 190° C., vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of said composition; and wherein the fiber is a monocomponent meltspun fiber.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: January 23, 2018
    Assignee: Dow Global Technologies LLC
    Inventors: Randy E. Pepper, Mridula Babli Kapur, Gert J. Claasen, Edward N. Knickerbocker, Nathan J. Wiker, William J. Michie, Jr., Mark B. Davis
  • Patent number: 9862805
    Abstract: Thermoplastic polymer particles directly cross-linked together or cross-linked via a separate and independent polymer network to form an inter-penetrating network are disclosed herein, along with methods of manufacturing and use as interleaf tougheners of pre-pregs and composite articles.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: January 9, 2018
    Assignee: CYTEC TECHNOLOGY CORP.
    Inventors: Yi Wei, Alexandre Baidak, James Senger
  • Patent number: 9850328
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a heterocyclic group and a hydrocarbyloxy-substituted or silyloxy-substituted aryl group.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: December 26, 2017
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein, Joshua P. Abell
  • Patent number: 9845366
    Abstract: The invention relates to methods for achieving a step increase in the Mooney viscosity in production of high-molecular-weight polybutadiene having >95% by weight content of cis-1,4 units and <1% by weight 1,2-vinyl content, characterized in that 1) at least one monomer selected from butadiene and/or isoprene is polymerized at temperatures of from ?20° C. to 150° C. in the presence of at least one inert, organic solvent and in the presence of at least one catalyst based on neodymium carboxylate, 2) the polymerization is then terminated by addition of protic compounds and 3) then sulphur chlorides are added to the polymer, and prior to addition these sulphur chlorides are treated with a carboxylic acid, fatty acid and/or fatty acid ester.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: December 19, 2017
    Assignee: ARLANXEO Deutschland GmbH
    Inventors: Heike Kloppenburg, Thomas Gross, Alex Lucassen, Dave Hardy, Yan Zhang, Alicia Le-Sattler
  • Patent number: 9840616
    Abstract: Unoriented film comprising at least 70 wt.-% of an heterophasic propylene copolymer, said heterophasic propylene copolymer comprises a matrix being a random propylene copolymer and an elastomeric propylene copolymer dispersed in said matrix, wherein the heterophasic propylene copolymer has (a) a melt flow rate MFR2 (230° C.) in the range of 3.0 to 10.0 g/10 min, (b) a melting temperature in the range of 130 to 150° C., (c) a xylene cold soluble content in the range of 25 to 50 wt.-%, (d) comonomer content in the range of 10.0 to 15.0 wt.-%, wherein further the xylene cold soluble content of the heterophasic propylene copolymer has (e) a comonomer content in the range of 20 to 30 wt.-% and (f) an intrinsic viscosity in the range of 0.8 to below 2.0 dl/g.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: December 12, 2017
    Assignee: Borealis AG
    Inventors: Markus Gahleitner, Martina Sandholzer, Klaus Bernreitner, Pauli Leskinen
  • Patent number: 9822191
    Abstract: A technique of improving the hydrogenation reaction of diene-based polymers, present in aqueous suspension, by in-situ synthesizing the catalyst in the presence of a specific aliphatic alcohol is disclosed. The process allows the selective hydrogenation of the carbon-carbon double bonds in the diene-based polymers with a high degree of hydrogenation and short reactions times. The improved process eliminates the complicated catalyst synthesis operations so far necessary.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: November 21, 2017
    Assignee: UNIVERSITY OF WATERLOO
    Inventors: Garry L. Rempel, Qinmin Pan, Yin Liu
  • Patent number: 9815929
    Abstract: The present invention is directed to the functionalization of butyl rubber ionomer and optionally the grafting of polyamide to halobutyl rubber ionomers. Specifically, disclosed are methods and products resulting therefrom for creating functionalized ionomers and grafting polyamide to halobutyl ionomers via reactive extrusion. The process comprises reacting a halobutyl polymer with at least one nitrogen and/or phosphorous based nucleophile to provide a halobutyl ionomer comprising conjugated diene units; grafting of an amine-reactive dienophile to said ionomer to form a functionalized ionomer; and optionally blending the resulting functionalized ionomer with polyamide.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: November 14, 2017
    Assignee: LANXESS, Inc.
    Inventors: Conrad Siegers, Richard Steevensz
  • Patent number: 9815926
    Abstract: Provided herein are ethylene copolymers, methods for making such copolymers, and compositions made from such copolymers. The ethylene copolymers have 70 wt. % to 85 wt. % of units derived from ethylene and at least 12 wt. % of units derived from at least one ?-olefin having 3 to 20 carbon atoms. The copolymers preferably further have a weight-average molecular weight (Mw) ranging from about 50,000 to about 200,000 g/mol, melting point of at least 100° C., ratio of Mw/Mn of about 1.5 to about 3.5, a content of group 4 metals of no more than 25 ppm, and a ratio of wt ppm Group 4 metals/wt ppm Group 5 metals of at least 3. Such copolymers may be particularly useful as viscosity modifiers for lubricating oil compositions.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: November 14, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Rainer Kolb, Donna J. Crowther, Peijun Jiang
  • Patent number: 9803115
    Abstract: Disclosed is an adhesive hydrogel containing a polymer matrix, water, and a polyhydric alcohol, wherein the polymer matrix contains a copolymer of a monofunctional monomer with a single polymerizable C—C double bond and a polyfunctional monomer with two or more polymerizable C—C double bonds, the monofunctional monomer contains a nonionic (meth)acrylamide-based monomer, and the polyfunctional monomer has a composition formula: ClHmOn, where O is an oxygen atom in an ether bond, l is an integer greater than or equal to 4, m is an integer greater than or equal to 6, and n is an integer greater than or equal to 0.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: October 31, 2017
    Assignee: Sekisui Plastics Co., Ltd.
    Inventors: Takaaki Hatori, Kaori Sato, Takahiko Fujita, Kengo Nakamura
  • Patent number: 9803034
    Abstract: This invention relates to a highly functional graft copolymer and a method of preparing the same, and more particularly, to a highly functional graft copolymer including a main chain of a highly elastic ethylene-based terpolymer including, at a predetermined molar ratio, an ethylene unit, an ?-olefin unit having 6 to 12 carbon atoms, and at least one functional unit selected from the group consisting of divinylbenzene and p-methylstyrene, and a side chain of a polar polymer for imparting functionality, and to a method of preparing the highly functional graft copolymer by performing anionic polymerization after catalytic polymerization using a metallocene catalyst.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: October 31, 2017
    Assignee: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Dong Hyun Kim, Joon Chul Lee, Hyun Ki Kim, Tae Wan Kim
  • Patent number: 9796820
    Abstract: The present invention is a method for producing a water absorbent resin which method is a method for producing surface cross-linked water absorbent resin particles, the method including the successive steps of: (a) adding a surface cross-linking agent and water to a particulate water absorbent resin in a mixer; and (b) reacting the resulting water absorbent resin mixture taken out from the mixer with the surface cross-linking agent in a reactor by heating or active energy ray irradiation, water vapor being used as part or all of the water added in the mixer. This makes it possible to provide a method for producing a water absorbent resin in which method a surface cross-linked water absorbent resin that has excellent properties can be obtained efficiently at low cost with high productivity.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: October 24, 2017
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kenji Kadonaga, Kenji Tada, Masazumi Sasabe, Seiji Kato