Patents by Inventor Mineaki Tanigaichi

Mineaki Tanigaichi 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).

  • Cyanic acid esters of aromatic polycarbonates
    Patent number: 4026913
    Abstract: A novel cyanic acid ester of an aromatic polycarbonate can be prepared by reacting an aromatic polycarbonate having one or two terminal hydroxyl groups with a cyanogen halide in an inert solvent at a temperature of -30.degree. to +65.degree. C in the presence of a base. Said cyanic acid ester and an admixture of said cyanic acid ester with other known cyanic acid ester, both of which may or may not contain a catalyst and/or other polymers are available for a coating material, a casting material, an adhesive or a molding material. When said cyanic acid ester or said admixture is cured, there is obtained a laminate, a film or a molded article. The cured products are rich in flexibility.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: May 31, 1977
    Assignee: Mitsubishi Gas Chemical Co., Ltd.
    Inventors: Mineaki Tanigaichi, Morio Gaku, Kazuyuki Ohya, Susumu Motoori, Kazuo Noguchi
  • Phenolic resin composition for laminates
    Patent number: 4024094
    Abstract: A phenolic resin composition for manufacturing laminates which comprises a modified phenolic resin having incorporated therewith 1-40% by weight of polycarbonate resin. The phenolic resin composition gives laminates with improved mechanical strength and workability without causing any lowering of surface hardness.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: May 17, 1977
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Masaharu Kurata, Mineaki Tanigaichi, Kazuyuki Ohya
  • Cyanato-group-containing phenol resin
    Patent number: 4022755
    Abstract: A novel cyanato-group-containing phenol resin is produced by reacting a cyanogen halide in an inert organic solvent in the presence of a base with a phenol novolak comprising a mixture of polymers represented by the formula, ##STR1## WHEREIN, N IS 0 OR AN INTEGER OF 1 OR MORE; AND R's may be the same or different, and each R represents a hydrogen atom or a methyl group, and containing 50 % by weight or more in total of polymers having the above formula in which n is an integer of 1 to 3, the number average molecular weight of said novolak being at least 300 and less then 600. This phenol resin is suitable for use in the production of a cured resin having outstanding thermal properties.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: May 10, 1977
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Mineaki Tanigaichi, Susumu Motoori, Kazuo Noguchi
  • Resin composition for laminates and prepared therefrom
    Patent number: 3947393
    Abstract: A resin composition for laminates excellent in water resistance, electrical properties, mechanical strength, punchability and heat resistance is obtained by blending a drying oil-modified-resol type phenolic resin and a resol type water soluble phenolic resin with a drying oil-phenols-modified mesitylene-formaldehyde resin.
    Type: Grant
    Filed: July 29, 1974
    Date of Patent: March 30, 1976
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Shunichi Sato, Mineaki Tanigaichi, Kazuyoshi Iwasawa