Patents by Inventor Kensho Okayama

Kensho Okayama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8519046
    Abstract: It is an object of the present invention to provide a polyolefin resin dispersion composition in which the dispersed resin is stable to water or a hydrophilic substance, and which has an adhesive property to nonpolar substrates, in particular poorly adhesive polyolefin-based substrates whose surface has not been treated, is excellent in a coating property, exhibits an excellent adhesive property through drying and press bonding with heat at a temperature in a wide range regardless of whether the temperature is low or high, is excellent in water resistance and gasohol resistance and is less tacky. That is, the present invention provides the dispersed resin composition containing (a) a polyolefin resin, (b) a (meth)acrylic acid homopolymer or copolymer having a side chain comprising an esterified alkyl group, (c) a basic substance and (d) water or a hydrophilic substance, and a process for producing the same.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: August 27, 2013
    Assignee: Nippon Paper Chemicals Co., Ltd.
    Inventors: Takayuki Hirose, Naosuke Komoto, Kensho Okayama, Koji Masumoto, Naoko Nagaoka
  • Publication number: 20100029836
    Abstract: It is an object of the present invention to provide a polyolefin resin dispersion composition in which the dispersed resin is stable to water or a hydrophilic substance, and which has an adhesive property to nonpolar substrates, in particular poorly adhesive polyolefin-based substrates whose surface has not been treated, is excellent in a coating property, exhibits an excellent adhesive property through drying and press bonding with heat at a temperature in a wide range regardless of whether the temperature is low or high, is excellent in water resistance and gasohol resistance and is less tacky. That is, the present invention provides the dispersed resin composition containing (a) a polyolefin resin, (b) a (meth)acrylic acid homopolymer or copolymer having a side chain comprising an esterified alkyl group, (c) a basic substance and (d) water or a hydrophilic substance, and a process for producing the same.
    Type: Application
    Filed: December 13, 2007
    Publication date: February 4, 2010
    Applicant: NIPPON PAPER CHEMICALS CO., LTD.
    Inventors: Takayuki Hirose, Naosuke Komoto, Kensho Okayama, Koji Masumoto, Naoko Nagaoka
  • Patent number: 7635520
    Abstract: A novel binder resin which attains good adhesion to various substrates such as polyolefin resins, vinyl chloride resins, polycarbonate resins, polyethylene terephthalate resins, acrylonitrile/butadiene/styrene resins, and nylon resins even by low-temperature baking and has excellent solubility in solvent. Namely, a chlorinated propylene random copolymer produced by subjecting a propylene random copolymer which is obtained by copolymerizing propylene with other alpha-olefins by using a metallocene catalyst as the polymerization catalyst and which has a melting point (Tm) of less than 115° C. as determined with a differential scanning calorimeter (DSC) to thermally kneaded preferably at a temperature ranging from the melting point of the copolymer to 350° C. and chlorination successively.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: December 22, 2009
    Assignee: Nippon Paper Chemicals Co., Ltd.
    Inventors: Eiji Nishijima, Koji Masumoto, Takayuki Hirose, Naosuke Komoto, Hironori Muramoto, Kensho Okayama
  • Publication number: 20070224435
    Abstract: A novel binder resin which attains good adhesion to various substrates such as polyolefin resins, vinyl chloride resins, polycarbonate resins, polyethylene terephthalate resins, acrylonitrile/butadiene/styrene resins, and nylon resins even by low-temperature baking and has excellent solubility in solvent. Namely, a chlorinated propylene random copolymer produced by subjecting a propylene random copolymer which is obtained by copolymerizing propylene with other alpha-olefins by using a metallocene catalyst as the polymerization catalyst and which has a melting point (Tm) of less than 115° C. as determined with a differential scanning calorimeter (DSC) to thermally kneaded preferably at a temperature ranging from the melting point of the copolymer to 350° C. and chlorination successively.
    Type: Application
    Filed: May 31, 2005
    Publication date: September 27, 2007
    Applicant: NIPPON PAPER CHEMICALS CO., LTD.
    Inventors: Eiji Nishijima, Koji Masumoto, Takayuki Hirose, Naosuke Komoto, Hironori Muramoto, Kensho Okayama