Patents Assigned to Sokubai Kagaku Kogyo, Co., Ltd.
  • Acrylonitrile maleimides solution composition of improved shelf life and method for production thereof
    Patent number: 5128484
    Abstract: The present invention is directed to an acrylonitrile maleimides solution composition of highly desirable shelf like, having the acid component in said acrylonitrile maleimides soltuion adjusted to a level of no more than 0.1% by weight based on the amount of said maleimides contained in said solution and having a polymerization inhibitor in said solution adjusted to a level in the range of 0.0001 to 1% by weight based on the amount of said solution, and a method for the production thereof.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: July 7, 1992
    Assignee: Sokubai Kagaku Kogyo, Co., Ltd.
    Inventors: Yuichi Kita, Kazuo Kishino, Masakazu Nakagawa, Hitoshi Kanei, Kentaro Sakamoto, Takeshi Okuno