Patents by Inventor Masahiro Tsuzuki

Masahiro Tsuzuki 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).

  • Publication number: 20220177696
    Abstract: The purpose of the present invention is to provide an epoxy resin composition which exhibits a high level of deforming capacity and fracture toughness and from which a resin cured product maintaining heat resistance can be obtained. The epoxy resin composition according to the present invention satisfies condition 1 or condition 2 below, wherein the resin cured product obtained by reacting the epoxy resin composition at 150° C. for 60 minutes has a tensile elongation at break of 7% or more. Condition 1: including all the following components [A], [B], and [C], component [A]: a bifunctional aliphatic epoxy resin having a specific structure, component [B]: a terminal carboxy-modified acrylic rubber, and component [C]: a dicyandiamide.
    Type: Application
    Filed: April 1, 2020
    Publication date: June 9, 2022
    Applicant: Toray Industries, Inc.
    Inventors: Daisuke Konishi, Yuichi Yamakita, Hideki Hanabusa, Noriyuki Hirano, Masahiro Tsuzuki
  • Publication number: 20210230384
    Abstract: The present invention addresses the problem of providing: a towpreg that has superior bobbin unspoolability and process pass-through properties, and is capable of yielding a fiber-reinforced composite having extremely high 0° tensile strength utilization; and a pressure vessel using such a towpreg. The means for solving this problem is a towpreg obtained by impregnating a reinforcing fiber tow with an epoxy resin composition containing [A]-[D], wherein: the epoxy resin composition contains 10-90 parts by mass of [A] and 10-50 parts by mass of [B] per 100 parts by mass of the epoxy resin component; the epoxy resin composition has a 25° C. viscosity (?25) of 1-40 Pa·s and a 40° C. viscosity (?40) of 0.2-5 Pa·s; and the cured epoxy resin composition has a glass transition temperature (Tg) of 95° C. or higher.
    Type: Application
    Filed: May 15, 2019
    Publication date: July 29, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Masahiro Tsuzuki, Kentaro Sano, Toshiya Kamae