Patents by Inventor Akira Sekimoto

Akira Sekimoto 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).

  • Process for producing chemically crosslinked polyethylene-polybutadiene
    Patent number: 3981830
    Abstract: A process for producing a chemically crosslinked polyethylene foam, which comprises heating a polyethylene composition consisting essentially of 97 to 50 % by weight of polyethylene, 3 to 50 % by weight of polybutadiene having a 1,2-addition unit content of at least 70 %, an intrinsic viscosity [.eta.] of at least 0.7 dl/g (as measured in toluene at 30.degree. C), at least one blowing agent and at least one crosslinking agent to foam and crosslink said polyethylene composition. The above process can be carried out with a smaller amount of crosslinking agents without expensive crosslinking equipment, and the foam obtained by this process has improved physical properties.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: September 21, 1976
    Assignees: Japan Synthetic Rubber Co., Ltd., MTP Kasei Co., Ltd.
    Inventors: Yasumasa Takeuchi, Takehiko Ikeda, Akira Sekimoto, Takashi Hayashi, Toshimi Sasaki, Sabulo Atsumi