Patents by Inventor Hiroyoshi Kaito

Hiroyoshi Kaito 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: 9670359
    Abstract: An object of the present invention is to provide a polycarbonate resin composition and a molded article, which are excellent in jet-blackness, image sharpness, impact resistance, scratch resistance owing to high hardness, flame retardancy and heat retention stability. The present invention provides a resin composition comprising a polycarbonate resin comprising a structural unit derived from a cyclic ether structure-containing dihydroxy compound and a coloring agent, which is a polycarbonate resin composition having an L* value of 6 or less as measured by the reflected light method of JIS K7105; and a molded article using the resin composition. The resin composition and the molded article of the present invention can be used over a wide range of fields allowing a product to be imparted with a high-grade appearance and a dignified impression.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: June 6, 2017
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroyoshi Kaito, Haruo Sasaki, Masashi Yokogi
  • Publication number: 20130331514
    Abstract: An object of the present invention is to provide a polycarbonate resin composition and a molded article, which are excellent in jet-blackness, image sharpness, impact resistance, scratch resistance owing to high hardness, flame retardancy and heat retention stability. The present invention provides a resin composition comprising a polycarbonate resin comprising a structural unit derived from a cyclic ether structure-containing dihydroxy compound and a coloring agent, which is a polycarbonate resin composition having an L* value of 6 or less as measured by the reflected light method of JIS K7105; and a molded article using the resin composition. The resin composition and the molded article of the present invention can be used over a wide range of fields allowing a product to be imparted with a high-grade appearance and a dignified impression.
    Type: Application
    Filed: August 16, 2013
    Publication date: December 12, 2013
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroyoshi KAITO, Haruo Sasaki, Masashi Yokogi
  • Patent number: 8017692
    Abstract: A resin composition for metal plating provides a molded article exhibiting excellent metal plating adhesion strength and chemical resistance, while having excellent productivity. A metal-plated molded article can also be made from such a resin composition. The resin composition for metal plating includes 50-90% by mass of Component (A) and 10-50% by mass of Component (B), the total of Component (A) and Component (B) being 100% by mass, wherein Component (A) is a polypropylene resin, and Component (B) is a rubber-reinforced vinyl resin obtained by polymerizing a vinyl monomer in the presence of a rubber-like polymer, or a mixture of the rubber-reinforced vinyl resin and a (co)polymer of the vinyl monomer. The composition may further include 0.5-30 parts by mass of a compatibilizer (C) per 100 parts by mass of the total of Component (A) and Component (B). Component (B) is preferably a non-diene rubber-reinforced resin.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: September 13, 2011
    Assignee: Techno Polymer Co., Ltd.
    Inventors: Hiroyoshi Kaito, Takashi Kurata, Toshiyuki Higashijima
  • Publication number: 20100068615
    Abstract: A resin composition for metal plating provides a molded article exhibiting excellent metal plating adhesion strength and chemical resistance, while having excellent productivity. A metal-plated molded article can also be made from such a resin composition. The resin composition for metal plating includes 50-90% by mass of Component (A) and 10-50% by mass of Component (B), the total of Component (A) and Component (B) being 100% by mass, wherein Component (A) is a polypropylene resin, and Component (B) is a rubber-reinforced vinyl resin obtained by polymerizing a vinyl monomer in the presence of a rubber-like polymer, or a mixture of the rubber-reinforced vinyl resin and a (co)polymer of the vinyl monomer. The composition may further include 0.5-30 parts by mass of a compatibilizer (C) per 100 parts by mass of the total of Component (A) and Component (B). Component (B) is preferably a non-diene rubber-reinforced resin.
    Type: Application
    Filed: November 20, 2007
    Publication date: March 18, 2010
    Applicant: Techno Polymer Co., Ltd
    Inventors: Hiroyoshi Kaito, Takashi Kurata, Toshiyuki Higashijima
  • Patent number: 5798407
    Abstract: A hydrophilic resin composition comprising a water-absorptive resin (component A), a thermoplastic modified ethylene polymer (component B), and, if desired, a thermoplastic polymer (component C) which is different from the component B, the water-absorptive resin (component A) being present in an amount of 0.1 to 70% by weight of the total amount of the components A to C, the component A being uniformly dispersed in the thermoplastic polymers (components B+C), in the form of particles having an average particle diameter of 5 .mu.m or less.A process for producing a hydrophilic resin composition, comprising kneading a water-absorptive resin containing water (component A) whose water content is 25 to 80% by weight to obtain a rubber-like resin, incorporating a modified ethylene polymer (component B), and, if desired, a thermoplastic polymer (component C) and an additive (component D) into the rubber-like resin, and melt kneading the mixture.
    Type: Grant
    Filed: October 22, 1996
    Date of Patent: August 25, 1998
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kazunori Yano, Hiroyoshi Kaito, Akeharu Wakayama, Shuhei Yada
  • Patent number: 5753169
    Abstract: The amount of impurities contained in a modified polyolefin obtained by means of melt-kneading grafting is reduced by melt-kneading the modified polyolefin in the presence of water. A melt-kneading machine having a vent port is typically used in this process.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: May 19, 1998
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hiroyoshi Kaito, Kazunori Yano, Akeharu Wakayama, Masahide Ochiumi