Patents by Inventor Yasuharu Nagai

Yasuharu Nagai 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: 11014340
    Abstract: There is provided an interlayer film for laminated glass with which the sound insulating properties of laminated glass can be enhanced. The interlayer film 2 for laminated glass according to the present invention includes a polyvinyl acetal resin and a second resin component with a glass transition temperature higher than or equal to ?15° C. and lower than or equal to 5° C., the content of the polyvinyl acetal resin is greater than or equal to 10% by weight and less than or equal to 50% by weight and the content of the second resin component is greater than or equal to 50% by weight and less than or equal to 90% by weight, in 100% by weight of the total of the polyvinyl acetal resin and the second resin component, and the polyvinyl acetal resin and the second resin component form a sea-island structure in the interlayer film.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 25, 2021
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kaoru Mikayama, Yasuharu Nagai
  • Publication number: 20210148447
    Abstract: A sliding member includes a first sliding member having a resin portion on its outer surface and a second sliding member having a metal portion that slides relative to the resin portion, wherein the resin portion of the first sliding member includes a resin containing a reinforcing filler and having a viscosity number VN of 180 ml/g or more, and the reinforcing filler has a hardness higher than that of the metal portion of the second sliding member. In the sliding component, preferably, the reinforcing filler has a Vickers hardness of 300 HV to 800 HV, and the metal portion has a Vickers hardness of 250 HV to 600 HV.
    Type: Application
    Filed: April 11, 2019
    Publication date: May 20, 2021
    Applicant: JTEKT CORPORATION
    Inventors: Yasuharu NAGAI, Setsuo NAGAI, Takeshi KUNISHIMA, Seiichi MACHIDA
  • Publication number: 20200299436
    Abstract: Provided is a polyvinyl acetal ionomer resin material capable of enhancing the shock resistance at low temperature. A polyvinyl acetal ionomer resin material according to the present invention includes a polyvinyl acetal ionomer resin having an ionic functional group and having a metal in an amount that makes a degree of neutralization be 10% or more and 90% or less, and the polyvinyl acetal ionomer resin has a meso percentage of acetal ring structure of 80% or more.
    Type: Application
    Filed: March 31, 2017
    Publication date: September 24, 2020
    Inventors: Kaoru Shindo, Yasuharu Nagai
  • Publication number: 20200299496
    Abstract: To provide a polyvinyl acetal ionomer resin film having a high Young's modulus and a high elongation at break. The polyvinyl acetal ionomer resin film according to the present invention includes a polyvinyl acetal ionomer resin containing polyvinyl acetal into which an acid group is introduced, and the polyvinyl acetal ionomer resin has a content of the acid group of 1.5% by mole or more and 10% by mole or less, and the polyvinyl acetal ionomer resin has a neutralization degree of 10% or more and 90% or less.
    Type: Application
    Filed: March 31, 2017
    Publication date: September 24, 2020
    Inventors: Kaoru Shindo, Yasuharu Nagai, Yuji Tanikawa
  • Patent number: 10784513
    Abstract: The present invention aims to provide a binder for a power storage device electrode which exhibits thermal energy stability over a wide temperature range covering from a high-temperature condition to a low-temperature condition when used as a binder for a power storage device electrode, and which enables production of a high-capacity storage battery with a small irreversible capacity and low resistance to have excellent output characteristics. The present invention also aims to provide a binder for a power storage device electrode which is excellent in dispersibility of an active material and adhesiveness, which improves the flexibility of an electrode to be obtained, and which has high resistance against electrolytes to enable production of a high-capacity storage battery even when the added amount thereof is small.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: September 22, 2020
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hiroyuki Morita, Yasuharu Nagai
  • Publication number: 20200139679
    Abstract: Provided is a resin film capable of enhancing both the sound insulating property and the transparency. A resin film according to the present invention has a one-layer structure or a two or more-layer structure, and includes a first layer containing polyvinyl acetate or a (meth)acryloyl polymer, and a compound having two or more hydroxyl groups, and the hydroxyl group in the compound having two or more hydroxyl groups is a secondary or tertiary alcoholic hydroxyl group or a phenolic hydroxyl group.
    Type: Application
    Filed: July 23, 2018
    Publication date: May 7, 2020
    Inventors: Yuki Ishikawa, Tatsuya Iwamoto, Shinji Kawada, Yasuharu Nagai, Satoshi Haneda
  • Publication number: 20200130338
    Abstract: Provided is a resin film capable of enhancing both the sound insulating property and the transparency. A resin film according to the present invention has a one-layer structure or a two or more-layer structure, and includes a first layer containing a resin component that is a thermoplastic resin or a cured product of a photocurable compound or a moisture-curable compound, and a terpene phenol resin.
    Type: Application
    Filed: July 23, 2018
    Publication date: April 30, 2020
    Inventors: Yuki Ishikawa, Tatsuya Iwamoto, Shinji Kawada, Yasuharu Nagai, Satoshi Haneda
  • Patent number: 10472441
    Abstract: The present invention aims to provide a binder for a power storage device electrode which favorably maintains adhesiveness between active materials in a long-term cycle, and which enables production of a high-capacity storage battery with a small irreversible capacity and low resistance to have excellent output characteristics. The present invention further aims to provide a composition for a power storage device electrode, a power storage device electrode, and a power storage device each prepared using the binder for a power storage device electrode.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: November 12, 2019
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hiroyuki Morita, Yasuharu Nagai
  • Publication number: 20190111665
    Abstract: Provided is an interlayer film for laminated glass having high Young's modulus, high flexural rigidity, and high sound insulating property. An interlayer film for laminated glass according to the present invention has a one-layer or two or more-layer structure, and includes a first layer including an ionomer resin containing polyvinyl acetal into which an acid group is introduced, or containing a (meth)acrylic resin into which an acid group is introduced, and the ionomer resin has a content of the acid group of 1.5% by mole or more and 10% by mole or less, the ionomer resin has a degree of neutralization of 10% or more and 90% or less, and the first layer has a glass transition point within a temperature range between ?20° C. and 0° C. inclusive.
    Type: Application
    Filed: March 31, 2017
    Publication date: April 18, 2019
    Inventors: Kaoru Shindo, Yasuharu Nagai, Yuji Tanikawa
  • Publication number: 20190013522
    Abstract: The present invention aims to provide a binder for a power storage device electrode which exhibits thermal energy stability over a wide temperature range covering from a high-temperature condition to a low-temperature condition when used as a binder for a power storage device electrode, and which enables production of a high-capacity storage battery with a small irreversible capacity and low resistance to have excellent output characteristics. The present invention also aims to provide a binder for a power storage device electrode which is excellent in dispersibility of an active material and adhesiveness, which improves the flexibility of an electrode to be obtained, and which has high resistance against electrolytes to enable production of a high-capacity storage battery even when the added amount thereof is small.
    Type: Application
    Filed: September 14, 2016
    Publication date: January 10, 2019
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hiroyuki MORITA, Yasuharu NAGAI
  • Publication number: 20180339947
    Abstract: The present invention provides a binder for producing an inorganic sintered body having excellent thermal decomposability and capable of providing, especially when used as a binder for a ceramic green sheet, a ceramic green sheet that has sufficient mechanical strength and flexibility, is less likely to absorb moisture, and can maintain its excellent sheet properties over a long period of time. The present invention also provides a paste for producing an inorganic sintered body and a ceramic green molded article each obtained using the binder for producing an inorganic sintered body.
    Type: Application
    Filed: December 16, 2016
    Publication date: November 29, 2018
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventor: Yasuharu NAGAI
  • Publication number: 20180201709
    Abstract: The present invention aims to provide a binder for a power storage device electrode which is excellent in adhesiveness and capable of improving the flexibility of an electrode to be obtained when used as a binder for a power storage device electrode, and which has high resistance against electrolytes. The present invention also aims to provide a binder for a power storage device electrode which favorably maintains adhesiveness between active materials in a long-term cycle, and which enables production of a high-capacity storage battery with a small irreversible capacity and low resistance to have excellent output characteristics. The present invention further aims to provide a composition for a power storage device electrode, a power storage device electrode, and a power storage device each prepared using the binder for a power storage device electrode.
    Type: Application
    Filed: September 14, 2016
    Publication date: July 19, 2018
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hiroyuki MORITA, Yasuharu NAGAI
  • Patent number: 10008724
    Abstract: The present invention aims to provide a binder for an electrode of a power storage device which is excellent in dispersibility of an active material and adhesion, capable of improving the electrode density of an electrode to be obtained, provided with high resistance against an electrolyte, and capable of producing a high-capacity lithium secondary battery even when the amount thereof is small. The present invention also aims to provide a composition for an electrode of a power storage device, an electrode of a power storage device, and a power storage device each produced using the binder for an electrode of a power storage device. The present invention relates to a binder for an electrode of a power storage device, including a polyvinyl acetal-based resin dispersion containing particles of a polyvinyl acetal-based resin dispersed in an aqueous medium, the polyvinyl acetal-based resin having a hydroxy group content of 30 to 60 mol %.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: June 26, 2018
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventor: Yasuharu Nagai
  • Publication number: 20180141315
    Abstract: The present invention aims to provide an interlayer filling material for a touch panel which is used for filling an interlayer space between a touch panel and another component or an interlayer space between transparent conductive films included in the touch panel in production of a personal digital assistant, which is excellent in followability to steps, which can provide a touch panel laminate that is less likely to suffer cracks or breakage. The present invention also aims to provide a touch panel laminate produced using the interlayer filling material for a touch panel.
    Type: Application
    Filed: May 13, 2016
    Publication date: May 24, 2018
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Shinji KAWADA, Juichi FUKATANI, Tomoki TODA, Yasuharu NAGAI
  • Patent number: 9862790
    Abstract: The present invention provides polyvinyl acetal fine particles for an aqueous dispersion which exhibit excellent dispersion stability in a water-containing dispersion medium, and allow for formation of a film having sufficient mechanical strength and flexibility without voids and non-uniform structures such as irregularities, and an aqueous dispersion of the polyvinyl acetal fine particles for an aqueous dispersion. The polyvinyl acetal fine particles for an aqueous dispersion, adapted for use as dispersoids in an aqueous dispersion, the polyvinyl acetal fine particles including a polyvinyl acetal resin with an ionic functional group, and having a volume average particle size of 10 nm to 100 ?m, and a CV value of a volume-based particle size distribution of at most 40%.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: January 9, 2018
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventor: Yasuharu Nagai
  • Publication number: 20170266928
    Abstract: There is provided an interlayer film for laminated glass with which the rigidity of laminated glass can be enhanced, the sound insulating properties of laminated glass can be heightened and the recyclability of the interlayer film can be enhanced. The interlayer film for laminated glass according to the present invention includes a first layer and a second layer arranged on a first surface side of the first layer, the first layer contains a polyvinyl acetal resin and a second resin component, the second layer contains a polyvinyl acetal resin, the peak temperature of the loss tangent exhibited by the second resin component in the first layer is ?30° C. or higher and 10° C. or lower, and the refractive index of the second resin component in the first layer is 1.47 or higher and 1.51 or lower.
    Type: Application
    Filed: September 30, 2015
    Publication date: September 21, 2017
    Inventors: Kaoru Mikayama, Yasuharu Nagai
  • Publication number: 20170266927
    Abstract: There is provided an interlayer film for laminated glass with which the rigidity of laminated glass can be enhanced and the sound insulating properties of laminated glass can be heightened. The interlayer film for laminated glass according to the present invention includes a first layer and a second layer arranged on a first surface side of the first layer, the first layer contains a polyvinyl acetal resin and a second resin component, the second layer contains a polyvinyl acetal resin, the polyvinyl acetal resin and the second resin component form a phase separation structure in the first layer, and the glass transition temperature derived from the second resin component in the first layer is lower by 30° C. or more than the glass transition temperature derived from the polyvinyl acetal resin in the first layer.
    Type: Application
    Filed: September 30, 2015
    Publication date: September 21, 2017
    Inventors: Kaoru Mikayama, Yasuharu Nagai
  • Publication number: 20170018778
    Abstract: The present invention aims to provide a binder for an electrode of a power storage device which is excellent in dispersibility of an active material and adhesion, capable of improving the electrode density of an electrode to be obtained, provided with high resistance against an electrolyte, and capable of producing a high-capacity lithium secondary battery even when the amount thereof is small. The present invention also aims to provide a composition for an electrode of a power storage device, an electrode of a power storage device, and a power storage device each produced using the binder for an electrode of a power storage device. The present invention relates to a binder for an electrode of a power storage device, including a polyvinyl acetal-based resin dispersion containing particles of a polyvinyl acetal-based resin dispersed in an aqueous medium, the polyvinyl acetal-based resin having a hydroxy group content of 30 to 60 mol %.
    Type: Application
    Filed: March 18, 2015
    Publication date: January 19, 2017
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventor: Yasuharu NAGAI
  • Publication number: 20170002126
    Abstract: The present invention provides polyvinyl acetal fine particles for an aqueous dispersion which exhibit excellent dispersion stability in a water-containing dispersion medium, and allow for formation of a film having sufficient mechanical strength and flexibility without voids and non-uniform structures such as irregularities, and an aqueous dispersion of the polyvinyl acetal fine particles for an aqueous dispersion. The polyvinyl acetal fine particles for an aqueous dispersion, adapted for use as dispersoids in an aqueous dispersion, the polyvinyl acetal fine particles including a polyvinyl acetal resin with an ionic functional group, and having a volume average particle size of 10 nm to 100 ?m, and a CV value of a volume-based particle size distribution of at most 40%.
    Type: Application
    Filed: September 19, 2016
    Publication date: January 5, 2017
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventor: Yasuharu NAGAI
  • Patent number: 9512310
    Abstract: The present invention provides a polyvinyl acetal resin composition exerting excellent mechanical strength over a wide temperature range from low temperatures to high temperatures. The present invention provides a polyvinyl acetal resin composition containing a polyvinyl acetal resin and a resin having a crosslinked structure, the polyvinyl acetal resin composition having a structure in which the resin having a crosslinked structure is dispersed as a dispersed phase in the polyvinyl acetal resin as a continuous phase, the polyvinyl acetal resin composition having a maximum value of a loss tangent derived from the polyvinyl acetal resin at 40° C. or higher and a maximum value of a loss tangent derived from the resin having a crosslinked structure at 10° C. or lower in measurement of a dynamic viscoelasticity spectrum at a frequency of 10 Hz.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: December 6, 2016
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yasuharu Nagai, Kaoru Mikayama