Patents Examined by Robert Rabago
  • Patent number: 9982069
    Abstract: The following are provided: a water-absorbent resin in which, in the formation of an absorbent material forming an absorbent article, dispersion is satisfactory even in a moisture absorption state, which prevents the occurrence of troubles at the time of manufacturing of the absorbent article and which allows efficient manufacturing; and an absorbent article using an absorbent material containing the water-absorbent resin. The water-absorbent resin according to the present invention is obtained by polymerizing a water-soluble ethylenically unsaturated monomer and performing post-crosslinking thereon with a post-crosslinking agent, and the water-absorbent resin satisfies the requirements below: (A) yellow index is 5.0 or less; and (B) gel strength is 1800 Pa or less.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: May 29, 2018
    Assignee: Sumitomo Seika Chemicals Co. Ltd.
    Inventors: Tetsuhiro Hinayama, Masahiro Murakami, Hiroki Yabuguchi, Hideki Yokoyama
  • Patent number: 9120252
    Abstract: A shaped article including a modified ethylene-vinyl alcohol copolymer (C), wherein the modified ethylene-vinyl alcohol copolymer (C) is a product obtained by modifying an unmodified ethylene-vinyl alcohol copolymer (A) with an epoxy compound (B) having a double bond and has a degree of modification with the epoxy compound (B) of 0.1 to 10 mol % based on the monomer units of the ethylene-vinyl alcohol copolymer (A), and at least a part of the modified ethylene-vinyl alcohol copolymer (C) is crosslinked, and the gel fraction of the shaped article is 3% by weight or more. Thereby, a shaped article which contains almost no harmful crosslinking agent and which is excellent in hot water resistance, heat resistance and a gas barrier property is provided.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: September 1, 2015
    Assignee: Kuraray Co., Ltd.
    Inventors: Kaoru Ikeda, Masakazu Nakaya, Kazuhiro Kurosaki, Tomoyuki Watanabe
  • Patent number: 8258223
    Abstract: The invention concerns a process for producing water-absorbing polymer, which comprises a base polymer A being mixed with a first aqueous solution B of at least one surface postcrosslinker and a second aqueous solution C of at least one polyvalent cation and thermally treated, wherein said base polymer A is based on at least 50% neutralized acid-functional monomer and said solutions B and C are metered wholly or partly concurrently through separate nozzles whereby a water-absorbing polymer having a high saline flow conductivity value is obtained.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: September 4, 2012
    Assignee: BASF SE
    Inventors: Ulrich Riegel, Thomas Daniel, Matthias Weismantel, Mark Elliott, Dieter Hermeling
  • Patent number: 7714073
    Abstract: The invention provides blends comprising an ethylene copolymer formed from ethylene with at least one comonomer selected from (a) the group comprising compounds represented by the formula H2C?CHR wherein R represents a C1-C20 linear, branched or cyclic alkyl group or a C6-C20 aryl group, and (b) a C4-C20 linear, branched or cyclic diene. Each copolymer has a specific density, a specific molecular weight distribution, and a specific comonomer content distribution characteristic.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: May 11, 2010
    Inventors: Grant B. Jacobsen, Jozef J. Van Dun, Pak-Wing S. Chum, Larry A. Meiske, Fumio Matsushita, Akira Miyamoto
  • Patent number: 7659348
    Abstract: Crosslinked (meth)acrylamide particles in the form of substantially spherical fine particles having particle sizes of from 1 to 1000 ?m made of a polymer of a N-alkoxymethyl(meth)acrylamide and a polyfunctional unsaturated monomer copolymerizable with the N-alkoxymethyl(meth)acrylamide, wherein the structural units derived from the N-alkoxymethyl(meth)acrylamide are crosslinked by a crosslink having a structure represented by the formula 1 (wherein X is hydrogen or a methyl group, and each of R8 and R9 is another structural unit derived from the N-alkoxymethyl(meth)acrylamide and bonded to the nitrogen atom in another structural unit derived from the N-alkoxymethyl(meth)acrylamide monomer via a methylene group).
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: February 9, 2010
    Assignee: Tosoh Corporation
    Inventors: Kazuaki Muranaka, Maho Yamanaka, Kosuke Araki
  • Patent number: 7375164
    Abstract: The present invention relates to vulcanizing agent containing metal alkanedithiols for unsaturated rubbers.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: May 20, 2008
    Assignee: LANXESS Deutschland GmbH
    Inventors: Hermann-Josef Weidenhaupt, Hartmuth Buding, Josef Hahn, Nicole Häp, Petra Pallogh, Nesibe Ucal, Uwe Zettl
  • Patent number: 6747114
    Abstract: An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one C4 to C20 &agr;-olefin, the copolymer having a weight average molecular weight (Mw) from about 15,000 to about 200,000; an melt index (MI) from about 7 dg/min to about 3000 dg/min as measured by ASTM D 1238(B), and a (Mw/Mn) of approximately 2. Various production processes are also described. Also described are adhesive compositions and methods for making adhesive compositions having polymers or polymer blends with melt flow rates (MFRs) equal to and above 250° dg/min. at 230° C. Certain specific embodiments of the invention involve the use of a free radical initiator, e.g., a peroxide.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: June 8, 2004
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Anthony G. Karandinos, Keith A. Nelson, Jean M. Tancrede, Bruce A. Harrington, David J. Lohse, Olivier J. F. Georjon, Kenneth Lewtas, Sudhin Datta, Charles Cozewith