Patents by Inventor Yasuharu Nakayama

Yasuharu Nakayama 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).

  • Aqueous coating composition
    Patent number: 4130526
    Abstract: An aqueous coating composition which is prepared by radially polymerizing unsaturated vinyl monomer with ionic or nonionic surface active agent, and impregnating the obtained emulsion with a compound (A) that is represented by the general formula: ##STR1##
    Type: Grant
    Filed: June 30, 1977
    Date of Patent: December 19, 1978
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Yasuharu Nakayama, Tadashi Watanabe, Reiziro Nishida, Satoru Enomoto
  • Emulsion composition
    Patent number: 4122052
    Abstract: An emulsion composition prepared by the emulsion polymerization of a polymerizable vinyl monomer in the presence of an emulsifier characterized in that the emulsifier is a neutralized copolymer of (A) a monomer prepared by being allowed at least one glycidyl ester of arcylic acid and methacrylic acid to react with at least one fatty acid of drying oil fatty acid and semi-drying oil fatty acid, (B) .alpha.,.beta.-ethylenically unsaturated acid and (C) an unsaturated monomer containing substantially no carboxyl group and having a Q value of at least 0.1 as determined by Q-e theory.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: October 24, 1978
    Assignee: Kansai Paint Company, Limited
    Inventors: Tetsuo Aihara, Yasuharu Nakayama, Yoshio Yamashita, Tadashi Watanabe, Isao Toyomoto
  • Aqueous emulsion compositions
    Patent number: 4107114
    Abstract: An emulsion composition prepared by subjecting a mixture of monoethylenically unsaturated monomer and polyethylenically unsaturated monomer to emulsion polymerization with use of an emulsifier, the emulsifier being a water-soluble resin having a dry oil fatty acid residue or semi-drying oil fatty acid residue, or a water-soluble petroleum resin having non-vinyl type double bonds.
    Type: Grant
    Filed: October 13, 1976
    Date of Patent: August 15, 1978
    Assignee: Kansai Paint Company, Limited
    Inventors: Yasuharu Nakayama, Nobuhito Hirata, Yoshio Yamashita
  • Emulsion compositions
    Patent number: 4073758
    Abstract: An emulsion composition prepared by the emulsion polymerization of a polymerizable vinyl monomer in the presence of an emulsifier characterized in that the emusifier is a neutralized maleate, partial maleate, fumarate or partial fumarate of an addition polymerization polymer having as a side chain a drying oil fatty acid residue and/or semi-drying oil fatty acid residue linked to the main chain of the polymer by an ester bond.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: February 14, 1978
    Assignee: Kansai Paint Company, Limited
    Inventors: Yasuharu Nakayama, Tadashi Watanabe, Yoshio Yamashita, Tetsuo Aihara, Isao Toyomoto
  • Aqueous coating composition
    Patent number: 3993612
    Abstract: In an aqueous coating composition comprising a vinyl polymer emulsion prepared by subjecting a vinyl monomer to emulsion polymerization in an aqueous medium in the presence of maleinized polybutadiene used as a dispersion stabilizer, an improvement which is characterized in that at least one copolymer is further incorporated, said copolymer being composed of (A) at least one monomer prepared by reacting one glycidyl ester of acrylic acid and methacrylic acid with at least one fatty acid of drying oil fatty acid and semi-drying oil fatty acid, (B) at least one .alpha.,.beta.-ethylenically unsaturated acid and (C) at least one unsaturated monomer containing substantially no carboxyl group and having a Q value of at least 0.1 as determined by Q-e theory.
    Type: Grant
    Filed: March 19, 1975
    Date of Patent: November 23, 1976
    Assignee: Kansai Paint Company, Ltd.
    Inventors: Tetsuo Aihara, Tadashi Watanabe, Yasuharu Nakayama, Yoshio Yamashita, Isao Toyomoto