Patents Examined by Roberto Rábago
  • Patent number: 10563056
    Abstract: An expandable thermoplastic resin particle including a polymer obtained by a process including polymerizing monomers including 60 to 80 parts by weight of ?-methylstyrene and 40 to 20 parts by weight of acrylonitrile. A content of residual monomeric components in the expandable thermoplastic resin particle is not more than 0.5% by weight. When an expanded mold article is produced from the expandable thermoplastic resin particle at an expansion ratio of 10 times, foam cells in a cross section of the expanded mold article have an average chord length of from 20 ?m to 60 ?m.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: February 18, 2020
    Assignee: KANEKA CORPORATION
    Inventors: Atsushi Iida, Kirito Suzuki, Tatsuya Henmi
  • Patent number: 10556997
    Abstract: A cross-linked rubber product is obtained by cross-linking an acrylic elastomer composition containing an acrylic elastomer obtained by copolymerization of an acrylate and a cross-linking site monomer. The molar fraction of an oxygen atom (a) in the acrylic elastomer is 11.3 mol % or less, the molar fraction of a nitrogen atom (b) in the acrylic elastomer is 0.5 mol % or less, and a volume change is from ?3 to 6% when the cross-linked rubber product is dipped in distilled water at 80° C. for 200 hours.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: February 11, 2020
    Assignee: ZEON CORPORATION
    Inventors: Nobuyoshi Emori, Tomonori Ogawa, Takanori Arakawa
  • Patent number: 10550216
    Abstract: Provided is a multi-component copolymer having excellent crack growth resistance and wear resistance. The multi-component copolymer comprises conjugated diene units, non-conjugated olefin units and aromatic vinyl units, wherein: a peak top molecular weight of non-conjugated olefin parts linking only the non-conjugated olefin units is 500 or more and less than 40,000.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: February 4, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Madoka Kimura, Shigeki Oishi, Tomoe Tanabe
  • Patent number: 10544234
    Abstract: The present invention relates to functionalized copolymer rubbers containing nitrile groups and to the preparation thereof, to vulcanizable mixtures comprising functionalized copolymer rubbers containing nitrile groups and to the preparation thereof, and to vulcanizates based on functionalized copolymer rubbers containing nitrile groups, to the preparation thereof and to the use thereof as technical material.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: January 28, 2020
    Assignee: ARLANXEO DEUTSCHLAND GMBH
    Inventors: Susanna Lieber, Karola Schneiders, Christoph Kins, Werner Obrecht
  • Patent number: 10544238
    Abstract: Provided herein are methods for preparing a functionalized polyolefin from an unsaturated polyolefin containing one or more non-aromatic main-chain double bonds and for reducing the size and/or polydispersity index (i.e., increasing the homogeneity) of the unsaturated polyolefin.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 28, 2020
    Assignees: Chevron Oronite Company LLC, The University of Southern Mississippi
    Inventors: Robson F. Storey, Subramanyam Ummadisetty, Christopher Garrett Campbell, Casey D. Stokes, Young Chang
  • Patent number: 10538599
    Abstract: The present invention relates to a modified polymer having a high modification ratio and an excellent affinity with a filler, a method of preparing the same, a rubber composition including the modified polymer, and a molded article prepared from the rubber composition. The modified polymer according to the present invention may exhibit a high modification ratio by including functional groups in a polymer main chain and on at least one end thereof, and thus, an affinity with a filler, such as silica, may be excellent. Also, the rubber composition according to the present invention may have excellent processability by including the modified polymer having an excellent affinity with the filler, and, as a result, a processed product (e.g., tire) prepared by using the rubber composition may have excellent tensile strength, abrasion resistance, and wet road surface resistance.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: January 21, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Min Soo Kim, Seung Ho Choi, Dae June Joe, Won Mun Choi
  • Patent number: 10538636
    Abstract: Specific benzocyclobutenes serve as intramolecular or intermolecular or both intramolecular or intermolecular crosslinkers. The benzocyclobutenes can be incorporated into polymers post polymerization or can be provided as monomers that participate in homopolymerization or copolymerization with other monomer to create the polymers having benzocyclobutenes that are exploited to carry out the crosslinking. At least some of the benzocyclobutenes taught herein can be used to carry out crosslinking a ambient temperatures.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: January 21, 2020
    Assignee: The University of Akron
    Inventors: Coleen Pugh, Ajay Ramesh Amrutkar
  • Patent number: 10526476
    Abstract: The invention relates to a high-pressure polymerisation process for the preparation of polyethylene. A polymer is added to the extruder via a side feed dosage unit wherein the MFIsf of the polymer added via the side feed dosage unit has a higher value than the melt flow index (MFLend) of the polyethylene end product and wherein the Mw/Mn of the end product increases at least 15% compared to the product wherein no polymer is dosed via the side feed.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: January 7, 2020
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Jacobus Christinus Josephus Franciscus Tacx, Franciscus Petrus Hermanus Schreurs, Diego Mauricio Castaneda Zuniga
  • Patent number: 10525443
    Abstract: Provided is: a water-absorbent resin which has a better water absorption performance and with which it is possible to improve absorption performance under a load when used in an absorbent material. This water-absorbent resin, obtained by polymerising a water soluble ethylenically unsaturated monomer in the presence of an internal-crosslinking agent and by post-crosslinking using a post-crosslinking agent, has a water-absorption capacity of physiological saline under a load of 4.14 kPa of 16 mL/g or more, has a mass proportion of particles from 150 to 850 ?m relative to the whole proportion of 85 mass % or more, moreover has a mass proportion of particles from 300 to 400 ?m relative to the whole proportion of 20 mass % or more, and has an absorption capacity elasticity index represented by formula (I) of 68,000 or more. Absorption capacity elasticity index=storage elastic modulus [Pa]×centrifugal retention rate [g/g] . . . (I).
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: January 7, 2020
    Assignee: Sumitomo Seika Chemicals Co. Ltd.
    Inventors: Masahiro Murakami, Tetsuhiro Hinayama, Hiroki Yabuguchi, Hideki Yokoyama
  • Patent number: 10519304
    Abstract: A dual reactor solution process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have good processability, stiffness, and environmental stress crack resistance. The polyethylene compositions are suitable for compression molding or injection molding applications and are particularly useful in the manufacture of caps and closures for bottles.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: December 31, 2019
    Assignee: NOVA Chemicals (International) S.A.
    Inventor: XiaoChuan Wang
  • Patent number: 10494538
    Abstract: Various embodiments of the present invention are directed to switchable carboxybetaine-based polymers, hydrogels, and/or elastomers, along with novel related monomers, crosslinkers, and methods. Under acidic conditions, the materials undergo self-cyclization and can catch and kill bacteria. Under neutral/basic conditions, these materials undergo ring-opening and can release killed bacterial cells and resist protein adsorption and bacterial attachment. These smart polymers, hydrogels and elastomers also show excellent mechanical properties making them highly desirable for many biomedical applications.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: December 3, 2019
    Assignee: THE UNIVERSITY OF AKRON
    Inventors: Gang Cheng, Bin Cao
  • Patent number: 10465065
    Abstract: Disclosed herein is a compound composition for a vehicle interior material using a natural fiber, which has use for enhancing physical properties, such as shock resistance, tensile strength, flexural strength, elongation, flexural modulus of elasticity, and heat deflection temperature, while realizing a reduction in weight of a vehicle. The compound composition is composed of a base resin obtained by mixing a high-fluidity polypropylene resin and a high-impact polypropylene resin, the base resin being a thermoplastic resin, a reinforcing filler that is a lightweight, eco-friendly, and low-density natural fiber, an impact modifier that is ethylene-propylene-octene rubber, an inorganic filler that functions as a nuclear agent, and a maleic-anhydride compatibilizer.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: November 5, 2019
    Assignees: HANYANG ADVENCED MATERIALS CO., LTD., SEOYON E-HWA CO., LTD.
    Inventors: Cheol Woo Kim, Deuk Ki Joo, Ki Woong Lee
  • Patent number: 10465021
    Abstract: An uncompounded particulate metallocene-produced polyethylene can have a multimodal molecular weight distribution and particle size distribution measured by obtaining at least four fractions by sieving. A set of Mw values including an Mw value for each fraction can be obtained. A set of Mn values including an Mn value for each fraction can be obtained. A ratio between a standard deviation value of the Mw set and a mean value of the Mw set can be equal to or less than 0.15. A ratio between a standard deviation value of the Mn set and a mean value of the Mn set can be equal to or less than 0.15. The uncompounded particulate metallocene-produced polyethylene can be prepared by a process that includes polymerization in an apparatus. The apparatus can include at least three serially connected loop reactors.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: November 5, 2019
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Aurelien Vantomme, Christopher Willocq, Daan Dewachter
  • Patent number: 10457765
    Abstract: Metallic complexes having indenyl ligands can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers that include both olefins and polyenes. Embodiments of the catalyst system can provide interpolymers that include polyene mer and from 40 to 75 mole percent ethylene mer, with a plurality of the ethylene mer being randomly distributed. The catalyst system also can be used in solution polymerizations conducted in C5-C12 alkanes, yielding interpolymers that include at least 10 mole percent ethylene mer.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: October 29, 2019
    Assignee: Bridgestone Corporation
    Inventors: Zengquan Qin, Joshua P. Abell
  • Patent number: 10450425
    Abstract: The present invention relates to a super absorbent polymer and a method for preparing the same. The present invention has features that it is possible to prepare a super absorbent resin that can have an improved centrifuge retention capacity (CRC) and a high absorbency under load (AUL) by controlling the shape and size of the chopper die holes during coarse pulverization of a hydrous gel phase polymer.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: October 22, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Hye Mi Nam, Sang Gi Lee, Tae Hwan Jang, Min Ho Hwang, Soo Jin Lee
  • Patent number: 10442878
    Abstract: The invention provides an ethylene-based polymer formed from reacting at least the following: ethylene and at least one asymmetrical polyene, comprising an “alpha, beta unsaturated end” and a “C—C double bond end,” and wherein the reaction takes place in the presence of at least one free-radical initiator.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: October 15, 2019
    Assignee: Dow Global Technologies LLC
    Inventor: John O. Osby
  • Patent number: 10385147
    Abstract: A method for efficiently producing polyvinylamine crosslinked polymer particles by simple operation without using an organic solvent is provided. In the present invention, polyvinylamine crosslinked polymer particles can be produced by performing suspension polymerization in salt water containing N-vinylcarboxylic acid amide and a polyvinyl compound in the presence of a dispersant to obtain particles of a polyvinyl carboxylic acid amide crosslinked polymer and subsequently hydrolyzing the polyvinyl carboxylic acid amide crosslinked polymer. Divinylbenzene is preferred as the polyvinyl compound. N-Vinylcarboxylic acid amide, acrylonitrile, and a polyvinyl compound may be used.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: August 20, 2019
    Assignee: Hymo Corporation
    Inventor: Go Honda
  • Patent number: 10370460
    Abstract: A method for producing a functionalized polymer, the method comprising the steps of: (i) preparing a bulk polymerization system including a reactive polymer by introducing a lanthanide-based catalyst and a conjugated diene monomer; (ii) adding a heterocyclic nitrile compound the polymerization system including the reactive polymer to prepare polymerization system including a functionalized polymer; and (iii) adding a protic compound to the polymerization system including a functionalized polymer where the ratio of water or protic hydrogen atoms in the protic compound to the lanthanide atoms in the lanthanide-based catalyst is at least 1500 to 1.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: August 6, 2019
    Assignee: Bridgestone Corporation
    Inventors: Kevin Michael McCauley, Timothy Leonard Tartamella, Zachary Aaron Bush
  • Patent number: 10370465
    Abstract: Propylene polymers and propylene resin compositions containing the polymers are used as molded articles used under stress for a long period such as automotive parts, housing parts, home appliance parts and electric power tool parts. Stress-resistant molded articles of the invention are obtained from these materials. A propylene homopolymer (A) satisfies the following requirements (1) to (3), and a polypropylene resin composition contains the propylene homopolymer (A). (1) The ratio (Mw/Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn) according to GPC is in the range of 1.2 to 3.5. (2) Mn is in the range of 35,000 to 400,000. (3) The content of components soluble in o-dichlorobenzene at 90° C. is not more than 4 wt %.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: August 6, 2019
    Assignees: PRIME POLYMER CO., LTD., MITSUI CHEMICALS, INC.
    Inventors: Keita Itakura, Toshiyuki Ishii, Rikuo Onishi, Satoshi Hashizume
  • Patent number: 10323105
    Abstract: Provided are: a water-absorbent resin which, when used as an absorbent material, retains a high water-absorption performance, increases the diffusivity of a to-be-absorbed liquid and makes it possible to effectively decrease the amount of re-wet; and an absorbent article formed using an absorbent material including the water-absorbent resin. The water-absorbent resin according to the present invention is a water-absorbent resin obtained by polymerizing a water-soluble ethylenically monomer in the presence of an internal-crosslinking agent and thereafter post-crosslinking the polymer with a post-crosslinking agent, characterized in that when subjected to a liquid flow test, the water-absorbent resin has an effective absorbent material index (K) indicated by equation (I) of 250 or greater.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: June 18, 2019
    Assignee: Sumitomo Seika Chemicals Co. Ltd.
    Inventors: Hiroki Yabuguchi, Tetsuhiro Hinayama, Maoki Hama, Hideki Yokoyama