Patents Assigned to The Nippon Synthetic Chemical Industry Co., Ltd.
  • Patent number: 9085664
    Abstract: The present invention provides a polyvinyl alcohol film which has a width of 3 m or more, an in-plane retardation value of 30 nm or less and a fluctuation of in-plane retardation value of 15 nm or less.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: July 21, 2015
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Hideki Oono, Akihiko Chigami, Seiichirou Hayakawa
  • Patent number: 9061441
    Abstract: A method of producing a vinyl alcohol resin having a water content of not higher than 10 wt % by performing a multistage dewatering process by means of a kneading machine. The method permits efficient dewatering of a highly hydrous vinyl alcohol resin to ensure easy production of a lower water content vinyl alcohol resin having a water content of not higher than 10 wt %, thereby reducing production costs.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: June 23, 2015
    Assignee: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Keisuke Fujimura, Osamu Hommura, Yasufumi Beniya, Satoshi Matsunuma
  • Publication number: 20150159070
    Abstract: The present invention provides a drilling fluid additive comprising a specific cation-modified PVA-based resin and a drilling fluid containing the same. The drilling fluid additive can reduce hydration swelling of inorganic clay mineral such as bentonite, and provide a drilling fluid such as drilling mud capable of forming a thin and tough mud wall on the stratum during drilling operation.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 11, 2015
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Masahiro SAITO, Midori ASAI
  • Publication number: 20150140247
    Abstract: Disclosed is a high-pressure gas hose or storage vessel comprising at least one layer of a resin composition comprising (A) 1,2-diol in a side chain-containing vinyl alcohol-based resin, and (B) fluororesin having polar functional group capable of reacting with or forming hydrogen bond(s) with hydroxyl group. The gas-barrier layer comprising the resin composition has a favorable wettability of the interface between the component (A) and the component (B), and therefore the gas-barrier layer exhibits high level gas-barrier property without causing blister under the condition of high pressure of not only oxygen or air but also small molecule gas such as hydrogen. Furthermore, the gas barrier layer has superior flexibility and superior durability with respect to changes accompanying the supply and removal of high-pressure gas.
    Type: Application
    Filed: January 27, 2015
    Publication date: May 21, 2015
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Mitsuo SHIBUTANI, Taiji KANDA, Yasuhiro HIRANO, Akinobu INAKUMA
  • Publication number: 20150125676
    Abstract: A laminate having a greater economic benefit and an excellent gas barrier property against water vapor and other gases, and a packaging material and a press-through pack employing the laminate are provided. The laminate has a layered structure including: (A) a base film; (B) a stretched vinyl alcohol resin film; and (C) a fluororesin film.
    Type: Application
    Filed: May 13, 2013
    Publication date: May 7, 2015
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventor: Tomoyoshi Mizutani
  • Patent number: 8883920
    Abstract: The present invention provides a resin composition which comprises: (A) a saponifed ethylene-vinyl ester copolymer; (B) a rubber-like graft polymer; and (C) a polyalkylene ether unit-containing polymer. The inventive resin composition, which employs the saponfied ethylene-vinyl ester copolymer, is excellent in impact resistance.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: November 11, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Noriyoshi Inoue, Hideshi Onishi
  • Publication number: 20140308534
    Abstract: A biodegradable laminate, wherein a polyvinyl alcohol resin layer is laminated on at least one surface of an aliphatic polyester resin layer through an adhesive layer, which is excellent in biodegradability and gas barrier properties, and also excellent in interlayer adhesiveness, is obtained.
    Type: Application
    Filed: November 8, 2012
    Publication date: October 16, 2014
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Kaoru Inoue, Yasuhiro Hirano, Kaname Kida
  • Publication number: 20140227544
    Abstract: To obtain an aqueous coating liquid which affords, by applying it on a plastic substrate and drying it, a coated film excellent in transparency, gas barrier properties, and adhesiveness to the substrate and excellent in homogeneity. An aqueous coating liquid containing a polyvinyl alcohol resin (A), a polyethyleneimine (B), a nonionic surfactant (C), and an aqueous solvent (D).
    Type: Application
    Filed: September 28, 2012
    Publication date: August 14, 2014
    Applicant: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Kaoru Inoue, Tamae Naito
  • Patent number: 8772400
    Abstract: The present invention provides a polyvinyl alcohol-based film for optical uses, which is excellent in stretching property and is used for producing a polarizing film excellent in polarization performance throughout the visible light wavelength range, particularly in the vicinity of the wavelength of 460 nm. The invention relates to a polyvinyl alcohol-based film for optical uses comprising a polyvinyl alcohol-based resin, wherein the polyvinyl alcohol-based resin is composed of only a polyvinyl alcohol-based resin (A) containing a 1,2-glycol bond at a side chain and the amount of the 1,2-glycol bond at a side chain is from 0.01 to 6% by mol, or a polyvinyl alcohol-based film for optical uses comprising a polyvinyl alcohol-based resin, wherein the polyvinyl alcohol-based resin includes a polyvinyl alcohol-based resin (A) containing a 1,2-glycol bond at a side chain and a polyvinyl alcohol-based resin (B) other than the polyvinyl alcohol-based resin (A) and satisfies the following expression (1): 0.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: July 8, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Shuichi Kitamura, Katsuhiko Katsuma, Mitsuo Shibutani, Toshihiro Shimizu
  • Patent number: 8765037
    Abstract: An ethylene-vinyl alcohol copolymer (EVOH) composition preparation process is provided, which comprises the steps of: feeding an EVOH alcohol solution into a tower type apparatus, the EVOH alcohol solution comprising 100 parts by weight of an EVOH and not less than 300 parts by weight of an alcohol having a carbon number of not greater than 4; bringing the EVOH alcohol solution into contact with water, and feeding out a part of the alcohol together with water from the apparatus to provide an EVOH water/alcohol mixture solution comprising 100 parts by weight of the EVOH, 10 to 200 parts by weight of the alcohol and 50 to 200 parts by weight of water; bringing the EVOH water/alcohol mixture solution into contact with water in an agitator container with stirring, and feeding out a part or all of the alcohol together with water from the container to provide an EVOH composition comprising 100 parts by weight of the EVOH, less than 10 parts by weight of the alcohol and 20 to 100 parts by weight of water.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: July 1, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Keisuke Fujimura, Yasufumi Beniya, Akio Harao, Yoshiharu Nagao, Shinji Okamoto
  • Patent number: 8722785
    Abstract: Provided is a composite of saponified product of an ethylene-vinyl ester-based copolymer from which films excellent in gas barrier properties and film rigidity and highly inhibited from having fish eyes are obtained. It is a process for producing a composite of saponified product of an ethylene-vinyl ester-based copolymer, which comprises: mixing a composition (a) containing a saponified product of ethylene-vinyl ester-based copolymer (A1) and having a moisture content of 50% by weight or higher with a water-swellable layered inorganic compound (B) to obtain a composition (C); and mixing the composition (C) in the state of having a moisture content of 10% by weight or higher and less than 60% by weight with a saponified product of ethylene-vinyl ester-based copolymer (A2).
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: May 13, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventor: Shouichi Kani
  • Patent number: 8722782
    Abstract: The present invention provides a polyvinyl alcohol-based resin composition having less coloration from melt processing and having high aging stability of the melt viscosity comprising a polyvinyl alcohol-based rein having a structural unit represented by the following formula (1) and having an absorbance of 0.1 to 0.3 of 280 nm in an ultraviolet absorbance spectrum as a 4 mass % aqueous solution, a carboxylic acid and an alkaline (earth) metal salt, wherein when an aqueous solution of the polyvinyl alcohol-based resin composition is prepared so as to have a content of the polyvinyl alcohol-based resin of 4 mass %, the pH of the aqueous solution at 20° C. is from 5.5 to 7: wherein R1, R2 and R3 independently represent a hydrogen atom or an organic group, X represents a single bond or a bonding chain, and R4, R5 and R6 independently represent a hydrogen atom or an organic group.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: May 13, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Mitsuo Shibutani, Kaoru Inoue, Yuichi Takahashi
  • Patent number: 8722181
    Abstract: The present invention provides a resin composition of a saponified ethylene-vinyl ester copolymer can provide a molded product including layer of the resin composition with less thickness variation and excellent gas-barrier properties, even if the layer is subjected to stretch forming such as deep drawing forming and vacuum-pressure forming where the layer is applied with different tension from side to side thereof in short time. The resin composition comprises an EVOH resin having ethylene content of 20 to 60 mol % and a PVA having 1,2-diol structural unit in a side chain. The present invention also provides a multilayer structure using the resin composition.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: May 13, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Shinji Okamoto, Kouji Yamada
  • Patent number: 8722243
    Abstract: An inventive electrolyte material contains a lithium salt comprising the following components (A1) and (B), or contains the following components (A1), (A2) and (B): (A1) a lithium cation; (A2) an organic cation; and (B) a cyanofluorophosphate anion represented by the following general formula (1): ?P(CN)nF6-n??(1) wherein n is an integer of 1 to 5. The inventive electrolyte material is excellent in electrochemical properties, i.e., has a higher electrical conductivity and a higher oxidation potential, and is capable of forming an electrode protection film, so that a highly safe lithium secondary battery can be provided.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: May 13, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Ryouta Tatsumi, Yasuhiro Aoki, Seiji Maeda, Mio Miyano, Seiichirou Hayakawa
  • Patent number: 8722822
    Abstract: This invention provides an aqueous emulsion, which comprises a polyvinyl alcohol-based resin, as the dispersant, and a polymer comprising a structural unit derived from an ethylenically unsaturated monomer, as the dispersoid, from which a film having excellent transparency can be obtained, and which is excellent in mechanical stability, chemical stability, freezing stability and storage stability, and a method for producing the same, and relates to an aqueous emulsion which has an average particle size of the dispersoid of from 100 to 450 ?m and an apparent grafting efficiency of the polyvinyl alcohol-based resin of from 65 to 75% based on the dispersoid, and a method for producing the same.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: May 13, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Mitsuo Shibutani, Masahiro Saito, Shusaku Mandai, Takaaki Murahashi
  • Publication number: 20140107275
    Abstract: A coating agent composition for battery electrode or separator, comprises a vinyl alcohol copolymer having a structural unit represented by the general formula (1), and an aqueous emulsion of a synthetic resin obtained by polymerizing a copolymerizable monomer having an acrylic monomer as a main component, or an aqueous emulsion of a styrene thermoplastic elastomer.
    Type: Application
    Filed: May 31, 2012
    Publication date: April 17, 2014
    Applicants: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD., KYORITSU CHEMICAL & CO., LTD.
    Inventors: Taichi Uemura, Satoshi Yamazaki, Mitsuo Shibutani, Kazuo Aiba
  • Patent number: 8691892
    Abstract: This invention provides a chaff molding which is excellent in a compressive strength. Said chaff molding comprises a chaff and a polyvinyl alcohol-based resin having a 1,2-diol structure as a side chain.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: April 8, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Kenji Kikuchi, Mitsuo Shibutani, Shusaku Mandai
  • Patent number: 8664333
    Abstract: An object of the present invention is to provide a new acetoacetic ester group-containing polyvinyl alcohol-based resin that contains less amount of water-insoluble matter and is excellent in transparency and viscosity stability when converted into an aqueous solution, and that realizes excellent water resistance by combined use of a crosslinking agent. The invention provides an acetoacetic ester group-containing polyvinyl alcohol-based resin containing a structural unit represented by the general formula (1): wherein at least one of R1 and R2 represents an acetoacetyl group, R3, R4, R5, R6, R7 and R8 each independently represents an arbitrary substituent, and X represents a single bond or an arbitrary bonding chain.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: March 4, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Mitsuo Shibutani, Masahiro Saito
  • Patent number: 8653182
    Abstract: The present invention provides an ink jet recording medium having an ink receiving layer excellent in the coloration resistance and water resistance; and a coating solution for forming an ink receiving layer, which exhibits a large difference in the gelation rate between at ambient temperature and under heating, and is stable at ambient temperature and swiftly gelled when heated. The present invention relates to an ink jet recording medium comprising an ink receiving layer containing an acetoacetic ester group-containing polyvinyl alcohol resin crosslinked by a glyoxylate on a supporting base; and a coating solution for forming an ink receiving layer containing an acetoacetic ester group-containing polymer compound, a glyoxylate and water.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: February 18, 2014
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventors: Shinichi Tanaka, Hiroyuki Ono
  • Publication number: 20140004350
    Abstract: Provided is a resin composition from which a melt molded product which is excellent in transparency, gas barrier property and flexibility and has biodegradability can be obtained. The present invention relates to a resin composition, which comprises a polyvinyl alcohol-based resin (i) comprising a structural unit represented by the following general formula (1) and an aliphatic-aromatic polyester (ii) comprising a specific component, wherein each of R1, R2 and R3 independently represents a hydrogen atom or an organic group, X represents a single bond or a bonding chain, and each of R4, R5 and R6 independently represents a hydrogen atom or an organic group.
    Type: Application
    Filed: March 15, 2011
    Publication date: January 2, 2014
    Applicants: BASF SE, THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
    Inventors: Mitsuo Shibutani, Norihito Sakai, Lars Boerger, Gabriel Skupin