Patents by Inventor Shunsuke Mabuchi

Shunsuke Mabuchi 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 reaction in catalyst suspension system
    Patent number: 4182919
    Abstract: A reaction in a catalyst suspension system is carried out by using a reactor equipped with a filter for separating the catalyst in the reactor.
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: January 8, 1980
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Shunsuke Mabuchi, Sadakatsu Kumoi, Kenji Tsuzuki
  • Process for hydrogenation of organic peroxide
    Patent number: 4123616
    Abstract: An organic peroxide is hydrogenated to produce the corresponding mono- or polyhydric alcohol in a suspensoid process or a fluidized bed process in the presence of more than 3 wt. % of a nickel catalyst at a reaction temperature of 140.degree. to 200.degree. C under a hydrogen pressure of 10 to 300 Kg/cm.sup.2 by feeding the organic peroxide at a rate of 0.05 to 10 g/hr. per 1 g of the nickel catalyst.
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: October 31, 1978
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Shunsuke Mabuchi, Kenji Tsuzuki, Sadakatsu Kumoi
  • Process for producing alcohol
    Patent number: 4112004
    Abstract: A monohydric or polyhydric alcohol is produced by continuous hydrogenation of an organic peroxide in the presence of a nickel catalyst by continuously feeding a solution of the organic peroxide and a suspension of the nickel catalyst in a ratio of the organic peroxide to the nickel catalyst in the range of 10 : 1 to 0.1 : 1, and by continuously discharging the reaction mixture with the catalyst so as to maintain a constant weight and composition of the reaction mixture in the reactor.
    Type: Grant
    Filed: August 4, 1976
    Date of Patent: September 5, 1978
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Shunsuke Mabuchi, Kenji Tsuzuki
  • Process for the reactivation of nickel catalysts used in the hydrogenation of polymeric peroxides
    Patent number: 4002692
    Abstract: The poisoned nickel catalyst obtained from the hydrogenation of an organopolymeric peroxide with hydrogen in an organic solvent is reactivated by treating the poisoned nickel catalyst with hydrogen in an oxygen containing polar organic solvent at 140.degree. - 250.degree. C.
    Type: Grant
    Filed: October 3, 1975
    Date of Patent: January 11, 1977
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Shunsuke Mabuchi, Kenji Tsuzuki, Hideaki Matsunaga
  • Method of producing diol by hydrogenolysis of peroxide polymers with reactivation of Raney nickel catalyst
    Patent number: 3980720
    Abstract: A poisoned Raney nickel catalyst from the hydrogenolysis of an organic peroxide polymer is reactivated by treating the catalyst with a 0.1-5 N solution of an activating reagent selected from the group consisting of ammonia, and an alkali metal or an alkaline earth metal hydroxide, carbonate or carboxylate having 1-4 carbon atoms at 20.degree.-200.degree.C under an inert gas atmosphere.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: September 14, 1976
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Shunsuke Mabuchi, Kenji Tsuzuki, Hideaki Matsunaga, Sadami Shimizu, Makoto Sumita