Patents Assigned to Sekisu Kagaku Kogyo Kabushiki Kaisha
  • Photo-degradable styrene resin compositions
    Patent number: 4517318
    Abstract: A photo-degradable styrene resin composition which comprises a styrene resin and at least one photo-degradable agent selected from the group consisting of benzophenone, anthraquinone, fluorenone, xanthone, phenylalkylketones, phenacyl halides and derivatives of these compounds, and optionally at least one photo-degradable accelerator.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: May 14, 1985
    Assignee: Sekisu Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Miyoshi, Hirohumi Mori, Yoriko Tanoue
  • Filler for liquid chromatography and method for separating water-soluble substances using said filler
    Patent number: 4447328
    Abstract: A liquid-chromatographic filler comprising a particulate synthetic polymer, such as glycerol di or tri (meth) acrylate wherein the filler exhibits a behavior such that in chromatography using polyethylene glycol as a sample and water as an eluent, the elution time of the sample increases with a rise in temperature. Separation of water-soluble substances by liquid chromatography can be achieved by using an aqueous medium as an eluent, and this filler.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: May 8, 1984
    Assignee: Sekisu Kagaku Kogyo Kabushiki Kaisha
    Inventors: Fumio Kamiyama, Kazutoshi Yamazaki, Minoru Kohara, Mituo Nagata