Patents by Inventor Yasuziro Kawabata

Yasuziro Kawabata 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).

  • Catalyst system for hydroformylation of olefins
    Patent number: 4370258
    Abstract: An improved hydroformylation process for preparing aldehydes by reacting olefins with synthesis gas (H.sub.2 and CO) under heating and pressure is disclosed. The hydroformylation is carried out in the presence of a platinum catalyst, and assistant composed of a halide of a metal of the group IVb of the Periodic Table and a reaction promotor composed of a specific bidentate ligand of the formula R.sub.2 X-Z-Y-Z-X-R'.sub.2. In this reaction, the platinum catalyst exerts a high activity, and an aldehyde mixture containing a linear isomer at a very high ratio of content is obtained as a product.
    Type: Grant
    Filed: May 7, 1981
    Date of Patent: January 25, 1983
    Assignee: Agency of Industrial Science & Technology
    Inventors: Ikuei Ogata, Yasuziro Kawabata, Masato Tanaka, Teruyuki Hayashi
  • Process for preparation of aldehydes
    Patent number: 4229381
    Abstract: An improved hydroformylation process for preparing aldehydes by reacting olefins with synthesis gas (H.sub.2 and CO) under heating and pressure is disclosed. The hydroformylation is carried out in the presence of a platinum catalyst, and assitant composed of a halide of a metal of the group IVb of the Periodic Table and a reaction promotor composed of a specific bidentate ligand of the formula R.sub.2 X--Z--Y--Z--X--R'.sub.2. In this reaction, the platinum catalyst exerts a high activity, and an aldehyde mixture containing a linear isomer at a very high ratio of content is obtained as a product.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: October 21, 1980
    Assignee: Agency of Industrial Science & Technology
    Inventors: Ikuei Ogata, Yasuziro Kawabata, Masato Tanaka, Teruyuki Hayashi