Patents by Inventor Masaaki Fujimatsu

Masaaki Fujimatsu 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).

  • Method of producing a flame-retardant acrylic copolymer
    Patent number: 4716002
    Abstract: This invention relates to a method of producing a flame-retardant acrylic polymer by polymerizing, in the presence of a radical polymerization initiator, a vinyl monomer containing acrylonitrile in an amount of more than 75 weight %, in an aqueous medium in which is present a halogen-containing polymer latex substantially free from an emulsifier. The acrylic polymer can provide flame-retardant shaped products, especially fibers, which have no problems in the operation of spinning, transparency, gloss, dyed color clearness, etc.
    Type: Grant
    Filed: January 28, 1986
    Date of Patent: December 29, 1987
    Assignee: Japan Exlan Company Limited
    Inventors: Masaaki Fujimatsu, Toshiyuki Kobashi
  • Method of producing a flame-retardant acrylic polymer
    Patent number: 4604428
    Abstract: This invention relates to a method of producing a flame-retardant acrylic polymer by polymerizing, in the presence of a radical polymerization initiator, a vinyl monomer containing acrylonitrile in an amount of more than 75 weight %, in an aqueous medium in which is present a halogen-containing polymer latex substantially free from an emulsifier. The acrylic polymer can provide flame-retardant shaped products, especially fibers, which have no problems in the operation of spinning, transparency, gloss, dyed color clearness, etc.
    Type: Grant
    Filed: January 6, 1984
    Date of Patent: August 5, 1986
    Assignee: Japan Exlan Company Limited
    Inventors: Masaaki Fujimatsu, Toshiyuki Kobashi
  • Process for producing acrylic synthetic fibers having anti-pilling properties
    Patent number: 4205037
    Abstract: Acrylic synthetic fibers highly resistant to pilling and having good dyeability can be produced by specifying the composition of the acrylic polymer, the condition of the primary stretching step, the internal water content of the water-swollen gel fibers, the conditions of the steps of the drying-compacting, secondary stretching and relaxing heat treatment.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: May 27, 1980
    Assignee: Japan Exlan Company Limited
    Inventor: Masaaki Fujimatsu
  • Process for producing acrylic fibers having animal hair-like hand
    Patent number: 4020199
    Abstract: Process for imparting an animal hairlike hand to acrylic fibers by mixing a silicone resin and a polyoxyethylene alkylphenyl phosphate while adding water thereto to form an emulsion of weak acidity, applying the emulsion to swollen gelly acrylic fibers, drying the resultant fibers and applying a spinning oil to the dried fibers.
    Type: Grant
    Filed: September 24, 1975
    Date of Patent: April 26, 1977
    Assignee: Japan Exlan Company Limited
    Inventors: Katsuaki Nomura, Masaaki Fujimatsu