Patents by Inventor Hiroe SOEJIMA

Hiroe SOEJIMA 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).

  • Patent number: 10239896
    Abstract: A hydrosilylation iron catalyst prepared from a two-electron ligand (L) and a mononuclear, binuclear, or trinuclear complex of iron indicated by formula (1), Fe having bonds with carbon atoms included in X and the total number of Fe-carbon bonds being 2-10. As a result of using iron, the hydrosilylation iron catalyst is advantageous from a cost perspective as well as being easily synthesized. Hydrosilylation reactions can be promoted under mild conditions by using this catalyst. Fe(X)a??(1) (in the formula, each X independently indicates a C2-30 ligand that may include an unsaturated group excluding carbonyl groups (CO groups) and cyclopentadienyl groups, however at least one X includes an unsaturated group, a indicates an integer of 2-4 per Fe atom.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: March 26, 2019
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo Nagashima, Yusuke Sunada, Daisuke Noda, Hiroe Soejima, Koji Sakuta
  • Patent number: 10005797
    Abstract: A hydrosilylation reaction catalyst prepared from: a catalyst precursor comprising a transition metal compound, excluding platinum, belonging to group 8-10 of the periodic table, e.g., iron acetate, cobalt acetate, nickel acetate, etc.; and a ligand comprising an isocyanide compound such as t-butyl isocyanide. The hydrosilylation reaction catalyst has excellent handling and storage properties. As a result of using this catalyst, a hydrosilylation reaction can be promoted under gentle conditions.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: June 26, 2018
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo Nagashima, Yusuke Sunada, Atsushi Tahara, Daisuke Noda, Hiroe Soejima, Koji Sakuta
  • Patent number: 10000515
    Abstract: A hydrosilylation reaction catalyst prepared from: a catalyst precursor comprising a transition metal compound, excluding platinum, belonging to group 8-10 of the periodic table, e.g., iron acetate, cobalt acetate, nickel acetate, etc.; and a ligand comprising a carbine compound such as 1,3-dimesitylimidazol-2-ylidene, etc.. The hydrosilylation reaction catalyst has excellent handling and storage properties. As a result of using this catalyst, a hydrosilylation reaction can be promoted under gentle conditions.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: June 19, 2018
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo Nagashima, Yusuke Sunada, Atsushi Tahara, Daisuke Noda, Hiroe Soejima, Koji Sakuta
  • Publication number: 20170260215
    Abstract: A hydrosilylation reaction catalyst prepared from: a catalyst precursor comprising a transition metal compound, excluding platinum, belonging to group 8-10 of the periodic table, e.g., iron acetate, cobalt acetate, nickel acetate, etc.; and a ligand comprising a carbine compound such as 1,3-dimesitylimidazol-2-ylidene, etc. The hydrosilylation reaction catalyst has excellent handling and storage properties. As a result of using this catalyst, a hydrosilylation reaction can be promoted under gentle conditions.
    Type: Application
    Filed: August 12, 2015
    Publication date: September 14, 2017
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo NAGASHIMA, Yusuke SUNADA, Atsushi TAHARA, Daisuke NODA, Hiroe SOEJIMA, Koji SAKUTA
  • Publication number: 20170260216
    Abstract: A hydrosilylation iron catalyst prepared from a two-electron ligand (L) and a mononuclear, binuclear, or trinuclear complex of iron indicated by formula (1), Fe having bonds with carbon atoms included in X and the total number of Fe-carbon bonds being 2-10. As a result of using iron, the hydrosilylation iron catalyst is advantageous from a cost perspective as well as being easily synthesized. Hydrosilylation reactions can be promoted under mild conditions by using this catalyst. Fe(X)a??(1) (in the formula, each X independently indicates a C2-30 ligand that may include an unsaturated group excluding carbonyl groups (CO groups) and cyclopentadienyl groups, however at least one X includes an unsaturated group, a indicates an integer of 2-4 per Fe atom.
    Type: Application
    Filed: August 19, 2015
    Publication date: September 14, 2017
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo NAGASHIMA, Yusuke SUNADA, Daisuke NODA, Hiroe SOEJIMA, Koji SAKUTA
  • Publication number: 20170233417
    Abstract: A hydrosilylation reaction catalyst prepared from: a catalyst precursor comprising a transition metal compound, excluding platinum, belonging to group 8-10 of the periodic table, e.g., iron acetate, cobalt acetate, nickel acetate, etc.; and a ligand comprising an isocyanide compound such as t-butyl isocyanide. The hydrosilylation reaction catalyst has excellent handling and storage properties. As a result of using this catalyst, a hydrosilylation reaction can be promoted under gentle conditions.
    Type: Application
    Filed: August 12, 2015
    Publication date: August 17, 2017
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo NAGASHIMA, Yusuke SUNADA, Atsushi TAHARA, Daisuke NODA, Hiroe SOEJIMA, Koji SAKUTA