Patents Examined by Jeffrey C. Mullis
  • Patent number: 11279821
    Abstract: A selectively hydrogenated block copolymer of general formula S-E-S, (S-E1)nX, or mixtures thereof is disclosed, where n has a value of 2-6, and X is a coupling agent residue. Before hydrogenation, S is a polystyrene block having a molecular weight of 4,400-5,600 g/mol, and E and E1 are polydiene blocks having molecular weights of 18,000-36,000 g/mol and 9,000 to 18,000 g/mol, respectively, selected from polybutadiene, polyisoprene and mixtures thereof, and having a total vinyl content of 60-85 mol %. After hydrogenation, the block copolymer has 0-10 percent of styrene double bonds reduced and at least 80 percent of conjugated diene double bonds reduced. The block copolymer has a solution viscosity of less than 80 centipoise (cP); a polystyrene content of 25-40 wt. % and up to 50 wt. % of diblock units of general formula S-E or S-E1.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: March 22, 2022
    Assignee: Kraton Polymers LLC
    Inventors: John E Flood, Xavier Muyldermans
  • Patent number: 11279819
    Abstract: In some embodiments disclosed herein are polyethylene composition including a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of less than 75,000 and a molecular weight distribution Mw/Mn of <2.3, a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of less than 75,000 and a molecular weight distribution Mw/Mn of <2.3, and a fourth polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 100,000 to 250,000 and a molecular weight distribution Mw/Mn of >2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition may have a soluble fraction in a CEF analysis of at least 7.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: March 22, 2022
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: XiaoChuan Wang, Peter Zoricak, Brian Molloy, Qinyan Wang, Lawrence VanAsseldonk, Norman Aubee
  • Patent number: 11279780
    Abstract: A semicrystalline multiblock copolymer includes alternating blocks of semicrystalline isotactic polypropylene (iPP) and semicrystalline polyethylene (PE), having a block arrangement according to formula (I): (iPPw)p(PEx)(iPPy)m(PEz)n?? (I), wherein p is 0 or 1; m is 0 or 1; n is 0 or 1; the sum of p, m, and n is 1, 2, or 3; and the sum of w, x, y, and z is greater than or equal to 40 kg/mol, with the provisos that: when m and n are 0, the sum of w and x is greater than or equal to 140 kg/mol; and when p and n are 0, the sum of y and x is greater than or equal to 140 kg/mol. Related compositions and methods are also provided.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: March 22, 2022
    Assignees: CORNELL UNIVERSITY, REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Geoffrey Coates, James Eagan, Anne Lapointe, Frank S. Bates
  • Patent number: 11274201
    Abstract: A thermoplastic resin composition of the present invention comprises a rubber-modified vinyl-based graft copolymer, a first aromatic vinyl-based copolymer, a second aromatic vinyl-based copolymer, and a polyalkylene glycol, wherein the first aromatic vinyl-based copolymer is a copolymer of methyl methacrylate, methyl acrylate, an aromatic vinyl-based monomer, and a monomer copolymerizable with the aromatic vinyl-based monomer, the second aromatic vinyl-based copolymer is a copolymer of an aromatic vinyl-based monomer and a monomer copolymerizable with the aromatic vinyl-based monomer, and the weight ratio of methyl methacrylate to methyl acrylate, in the first aromatic vinyl-based copolymer, is approximately 1:0.01 to approximately 1:0.2. The thermoplastic resin composition has excellent discoloration resistance, color, transparency, and the like even after irradiation with ionizing radiation.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: March 15, 2022
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Yoen Kyoung Kim, Cheon Seok Yang, Byeong Yeol Kim, Seung Yong Bae, Bong Jae Jeong, Ju Sung Kim
  • Patent number: 11267964
    Abstract: The present invention relates to a thermoplastic resin composition showing excellent transparency and whitening resistance. The thermoplastic resin composition of the present invention comprises (A) a graft copolymer having a multilayer structure and (B) a thermoplastic copolymer, wherein the graft copolymer having a multilayer structure (A) comprises a core of a conjugated diene-based rubber latex having a weight average particle diameter of 500 ? to 2,000 ?; an intermediate layer; and a graft layer. The glass transition temperature of the intermediate layer is 40° C. or less, the glass transition temperature of the graft layer is 80° C. or more, and the refractive index difference between the graft copolymer (A) and the thermoplastic copolymer (B) is less than 0.01.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: March 8, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Jeong Su Choi, Won Seok Lee, Roo Da Lee, Jong Ju Lee, Keun Hoon Yoo, Seok Goo Jang, Sang Hoo Park, Hye Jeong Ok, Ho Hoon Kim, Hyung Seop Shim
  • Patent number: 11267969
    Abstract: Provided is a polycarbonate-based resin composition, including: 50 mass % or more to 99 mass % or less of a polycarbonate-based resin (S) containing 0.1 mass % or more to 100 mass % or less of a polycarbonate-polyorganosiloxane copolymer (A), which contains a polycarbonate block (A-1) formed of a specific repeating unit and a polyorganosiloxane block (A-2) containing a specific repeating unit, and 0 mass % or more to 99.9 mass % or less of an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); and 1 mass % or more to 50 mass % or less of a polyester-based resin (C), wherein the polyorganosiloxane block (A-2) has an average chain length of from 20 or more to less than 50, and a 3-millimeter thick plate formed of the polycarbonate-based resin composition has a total light transmittance of 80% or more.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: March 8, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventor: Yasuhiro Ishikawa
  • Patent number: 11261278
    Abstract: Provided is a polyolefin block copolymer having covalently attached residues of one or more vinyl monomer selected from the group consisting of one or more (meth)acrylic monomers, one or more vinyl aromatic monomers, and mixtures thereof.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: March 1, 2022
    Assignee: Rohm And Haas Company
    Inventors: Hailan Guo, Morris Wills
  • Patent number: 11254774
    Abstract: The present invention relates to a styrene-based resin having a weight average molecular weight Mw? as determined by the GPC-MALS method of 1,000,000 or more and 5,000,000 or less, a degree of long-chain branching of 0.2 or more per 1,000 styrene units, and a tetrahydrofuran-insoluble matter of 0.1% by weight or less (including 0), the styrene-based resin being free from a component derived from a polyfunctional monomer in a molecular chain thereof.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: February 22, 2022
    Assignee: JSP Corporation
    Inventors: Kenji Haraguchi, Jumpei Goto
  • Patent number: 11254808
    Abstract: Polymer compositions may include a polymer matrix containing a polyolefin, one or more polymer particles dispersed in the polymer matrix, wherein the one or more polymer particles include a polar polymer selectively crosslinked with a crosslinking agent, and wherein the one or more polymer particles has an average particle size of up to 200 ?m. Processes of preparing a polymer composition may include mixing a polyolefin, a polar polymer, and a crosslinking agent; and selectively crosslinking the polar polymer with the crosslinking agent in the presence of the polyolefin. Methods may include increasing stress cracking resistance of a polyolefin by mixing a polar polymer with the polyolefin; and selectively crosslinking the polar polymer in the presence of the polyolefin with a crosslinking agent to form crosslinked polar polymer particles dispersed in the polyolefin.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: February 22, 2022
    Assignees: Braskem S.A., Universidade Federal do Rio de Janeiro
    Inventors: Alberto Cláudio Habert, Cristiano Piacsek Borges, Cristina Cardoso Pereira, Maria Elizabeth Ferreira Garcia, Jane Hitomi Fujiyama-Novak, Rafael Aislan Amaral, Bárbara Iria Silva Mano, Vinicius Galhard Grassi, Rogério Massanori Sakahara, Marcelo Farah, Mariele Kaipers Stocker, Marcos Roberto Paulino Bueno
  • Patent number: 11254835
    Abstract: Halogen-free decorative surface covering compositions comprising a polymer blend, the polymer blend comprising: a) at least one thermoplastic elastomer, the thermoplastic elastomer being a block copolymer comprising hard and soft sequences, wherein the hard sequence is a (co)polymer of one or more vinyl aromatic monomer(s) and wherein the soft sequence is a (co)polymer of one or more alkylene(s) or of a mixture of one or more alkylene(s) and one or more vinylaromatic monomers; b) at least one thermoplastic polyurethane.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: February 22, 2022
    Assignee: Tarkett GDL
    Inventors: Helena Johansson, Roland Karlsson, Stefan Karlsson, Nils Wallnäs
  • Patent number: 11254815
    Abstract: The invention relates to a process of preparing a polyolefin polylactic acid polymer blend comprising the steps of i) providing a polyolefin selected from polyethylene, polypropylene, and mixtures and copolymers thereof, ii) providing polylactic acid, iii) providing a polyolefin selected from polyethylene, polypropylene, and mixtures and copolymers thereof grafted with at least one epoxide-functional monomer, iv) providing a polylactic acid grafted with at least one carboxylic acid or carboxylic anhydride functional monomer, v) mixing the components i) to iv) at elevated temperature in a range from 150° C. to 260° C., and wherein component i) is provided in an amount of 5.0 to 50.0% by weight, component ii) is provided in an amount of 40.0 to 90.0% by weight, component iii) is provided in an amount of 1.0 to 20.0% by weight, and component iv) is provided in an amount of 1.0 to 15.0% by weight, calculated on the sum of components i) to iv).
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: February 22, 2022
    Assignee: BYK-CHEMIE GMBH
    Inventors: Inno Rapthel, Frederik Piestert, Andre Rapthel, Thorsten Kröller
  • Patent number: 11248112
    Abstract: An ethylene-vinyl alcohol copolymer resin composition contains: (A) an ethylene-vinyl alcohol copolymer; (B) an aliphatic carboxylic acid; (C) an aliphatic carboxylic acid metal salt which is a metal salt of the aliphatic carboxylic acid (B); and (D) an alkali metal compound; wherein the aliphatic carboxylic acid metal salt (C) contains a metal moiety that is at least one element selected from the group consisting of long Periodic Table 4th-period d-block elements; wherein the amounts of the aliphatic carboxylic acid (B), the aliphatic carboxylic acid metal salt (C), and the alkali metal compound (D) on a weight basis satisfy the following expressions (1) and (2): 0.01?((D)/(C))?30??(1) 0.0005?{(D)/[(B)/((B)+(C))]}?1??(2). The ethylene-vinyl alcohol copolymer resin composition is excellent in impact resistance and adhesive strength even without a resin other than an ethylene-vinyl alcohol copolymer blended therein.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: February 15, 2022
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Ryohei Komuro
  • Patent number: 11236224
    Abstract: Disclosed are a thermoplastic resin composition, a method of preparing the same, and a molded part manufactured using the same, wherein the thermoplastic resin composition includes a-1) 1 to 30% by weight of a first graft polymer obtained by graft-polymerizing an aromatic vinyl compound and a vinyl cyanide compound onto a conjugated diene rubber having an average particle diameter of 0.05 ?m or more and less than 0.2 ?m; a-2) 5 to 45% by weight of a second graft polymer obtained by graft-polymerizing an aromatic vinyl compound and a vinyl cyanide compound onto a conjugated diene rubber having an average particle diameter of 0.2 to 0.5 ?m; b) 50 to 80% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer; and c) 1 to 10% by weight of a (meth)acrylic acid alkyl ester polymer.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: February 1, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Ju Hyeong Lee, Byoung Il Kang, Se Jin Han
  • Patent number: 11225537
    Abstract: The present invention provides an ethylene-vinyl alcohol copolymer which can be melt-molded at lower temperatures than conventional ethylene-vinyl alcohol copolymers to give molded objects that are inhibited from suffering undesirable coloration or having fish-eyes and that have excellent gas barrier properties. The ethylene-vinyl alcohol copolymer of the invention has a carboxylic acid ester group at a polymer terminal.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: January 18, 2022
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Nobuaki Sato
  • Patent number: 11220568
    Abstract: A hydrogenated block copolymer satisfying the following conditions (1) to (7): (1) the hydrogenated block copolymer comprises (b) at least one hydrogenated copolymer block containing a vinyl aromatic monomer unit and a conjugated diene monomer unit; (2) a content of the (a) polymer block principally containing a vinyl aromatic monomer unit is 40% by mass or less; (3) Mw is 200,000 or less; (4) a hydrogenation rate is 20% or more; (5) a ratio, in a molecular weight curve of the hydrogenated block copolymer, of an area corresponding to a molecular weight of 10,000 to 150,000 to an area corresponding to a molecular weight of 10,000 to 1,000,000 is over 50%; (6) a vinyl bond content is 20% by mass or more (7) a content, in the (b) hydrogenated copolymer block, of the vinyl aromatic monomer unit is 30% by mass or more and 79% by mass or less.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: January 11, 2022
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Yuya Sonoda, Katsunori Nitta, Takahiro Tsuji
  • Patent number: 11214645
    Abstract: The present invention relates to a method for preparing a graft copolymer including polymerizing a conjugated diene-based monomer to prepare a small-size conjugated diene-based polymer; enlarging the small-size conjugated diene-based polymer to prepare a large-size conjugated diene-based polymer; and polymerizing the small-size conjugated diene-based polymer, the large-size conjugated diene-based polymer, an aromatic vinyl-based monomer and a vinyl cyan-based monomer to prepare a graft copolymer, wherein a weight ratio of the small-size conjugated diene-based polymer and the large-size conjugated diene-based polymer is 10:90 to 40:60 in preparing the graft copolymer.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: January 4, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Joo Byung Chai, Yu Sung Jung, Jong Beom Kim, Chang Sull Kim, Eun Seon Park, Tae Young Jeon, Young Min Kim
  • Patent number: 11214673
    Abstract: The present invention relates to a heat-resistant resin composition including a first copolymer including a conjugated diene-based polymer, units derived from an aromatic vinyl-based monomer, and units derived from a vinyl cyan-based monomer; a second copolymer including units derived from an aromatic vinyl-based monomer and units derived from a vinyl cyan-based monomer and having a glass transition temperature of 115° C. or more; and a third copolymer including units derived from an aromatic vinyl-based monomer and units derived from a vinyl cyan-based monomer, wherein the second copolymer has a linear shape, and the third copolymer has a branched shape and a branched degree of 2 to 8.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: January 4, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Seung Cheol Ryoo, Dae San Jung, Seong Lyong Kim, Jin Oh Nam
  • Patent number: 11203687
    Abstract: Provided is a block copolymer composition, and more particularly, a block copolymer composition including a diblock copolymer and a triblock copolymer. The diblock copolymer includes a first block containing a first conjugated diene-based monomer-derived repeating unit and a second block containing a first vinyl aromatic monomer-derived repeating unit, and a functional group derived from a modified initiator represented by the Chemical Formula 1 (see description of the invention) is included at one end of the diblock copolymer. A method of preparing the same, and an asphalt composition including the same, are provided.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: December 21, 2021
    Inventors: Se Kyung Lee, Tae Jung Kim, Hyun Woo Kim, Seong Du Lee, Chun Hwa Lee
  • Patent number: 11193030
    Abstract: Cyclic olefin copolymer (COC) is useful as a build material for 3D printing, especially desktop 3D printing.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: December 7, 2021
    Assignees: Avient Corporation, Spyder3D LLC
    Inventors: Joseph Bloomfield, Roger W. Avakian, Yannan Duan
  • Patent number: 11186715
    Abstract: Provided are a polyphenylene ether resin composition having excellent fluidity and heat resistance, and a vehicle lighting fixture bezel formed of this resin composition and having light weight, excellent external appearance, and low water absorbency. The resin composition contains: (A) 42-57 mass % of a polyphenylene ether resin having a reduced viscosity of 0.39-0.43 dL/g (in chloroform solvent at 30° C.); (B) 11-26 mass % of a polyphenylene ether resin having a reduced viscosity of 0.31-0.34 dL/g (in chloroform solvent at 30° C.); (C) 9-15 mass % of a block copolymer including a vinyl aromatic hydrocarbon polymer block (c1) and a hydrogenated conjugated diene polymer block (c2); and (D) 15-23 mass % of a homopolymer of a vinyl aromatic hydrocarbon. The (C) block copolymer includes 62-70 mass % of vinyl aromatic hydrocarbon-derived monomer units, has a weight-average molecular weight Mw of 50,000-70,000, and has a molecular weight distribution Mw/Mn (Mn is number-average molecular weight) of 1.00-1.30.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: November 30, 2021
    Assignees: ASAHI KASEI KABUSHIKI KAISHA, KOITO MANUFACTURING CO., LTD.
    Inventors: Yasuaki Konomi, Masahiko Niino, Hidetaka Anma, Kazuhito Osada, Takashi Furui