Patents Assigned to Toyo Kasei Kogyo Company Ltd.
  • Blowing agents of the tetrazoles and their derivatives
    Patent number: 5346927
    Abstract: Blowing agents of tetrazoles and their derivatives which have a melting point over 200.degree. C. and are used to manufacture the high quality foaming thermoplastic synthetic resin moldings, especially engineering or superengineering plastic moldings and said blowing agents generate no harmful gases and do not cause the deterioration of the thermoplastic synthetic resin moldings.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: September 13, 1994
    Assignee: Toyo Kasei Kogyo Company, Ltd.
    Inventors: Atsuhiro Onishi, Koichi Matsunami, Masanao Ebara, Hiroaki Tanaka
  • Polyolefin resin composites
    Patent number: 5143976
    Abstract: The present invention concerns the polyolefin resin compositions wherein acrylic oligomers, polydiene and chlorinated polyolefins which contain 10-60 weight % chlorine are graft copolymerized. Films of the polyolefin resin compositions have good adhesive properties, moisture-resistant properties and appearance.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: September 1, 1992
    Assignee: Toyo Kasei Kogyo Company Ltd.
    Inventors: Teruaki Ashihara, Shingo Tone, Ryozo Orita