Patents by Inventor Hideo Nagashima

Hideo Nagashima 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: 11773052
    Abstract: Provided are a donor-acceptor type compound having a novel structure and its use.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: October 3, 2023
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Nagashima, Atsushi Tahara, Ikumi Kitahara, Yoichiro Kuninobu
  • Publication number: 20230241594
    Abstract: Provided is a catalyst which comprises a compound represented by formula (1) and which exhibits activity for at least one type of reaction selected from among hydrosilylation reaction or hydrogenation reaction with respect to an aliphatic unsaturated bond and hydrosilane reduction reaction with respect to a carbon-oxygen unsaturated bond or a carbon-nitrogen unsaturated bond. Formula (1): Mn(Lm) {M represents Fe, Co, or Ni having an oxidation number of 0, L represents an isocyanide ligand represented by formula (2), n denotes an integer of 1-8, and m denotes an integer of 2-12. Formula (2): (CN)x—R1 (R1 represents a mono- to trivalent-organic group having 1-30 carbon atoms, optionally being substituted by a halogen atom, and optionally having interposed therein one or more atoms selected from among O, N, S, and Si; and x denotes an integer of 1-3)}.
    Type: Application
    Filed: April 12, 2023
    Publication date: August 3, 2023
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo NAGASHIMA, Atsushi SANAGAWA, Shoma KAWABATA, Daisuke NODA, Koji SAKUTA
  • Publication number: 20220401938
    Abstract: Provided is a catalyst which comprises a compound represented by formula (1) and which exhibits activity for at least one type of reaction selected from among hydrosilylation reaction or hydrogenation reaction with respect to an aliphatic unsaturated bond and hydrosilane reduction reaction with respect to a carbon-oxygen unsaturated bond or a carbon-nitrogen unsaturated bond. Formula (1): Mn(Lm) {M represents Fe, Co, or Ni having an oxidation number of 0, L represents an isocyanide ligand represented by formula (2), n denotes an integer of 1-8, and m denotes an integer of 2-12. Formula (2): (CN)x—R1 (R1 represents a mono- to trivalent-organic group having 1-30 carbon atoms, optionally being substituted by a halogen atom, and optionally having interposed therein one or more atoms selected from among O, N, S, and Si; and x denotes an integer of 1-3.)}.
    Type: Application
    Filed: August 16, 2022
    Publication date: December 22, 2022
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo NAGASHIMA, Atsushi SANAGAWA, Shoma KAWABATA, Daisuke NODA, Koji SAKUTA
  • Patent number: 11034712
    Abstract: This method is for producing a transition metal complex represented by formula (2), the method comprising reacting a compound containing a transition metal selected from V, Cr, Mo, W, Fe, Ru, Co, Rh, Ni, Pd, and Pt with an isocyanide compound represented by formula (1) in the presence of an alkali metal supported by a solid substance which is insoluble in an organic solvent. This production method can be used to easily and efficiently produce a transition metal complex that includes a predetermined transition metal having an oxidation number of 0 and that has the same or different isocyanide compounds, without using a compound harmful to the human body. (1): (CN)x—R1 {R1 represents a mono- to tri-valent organic group having 1-30 carbon atoms, and x represents an integer of 1-3}.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: June 15, 2021
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo Nagashima, Atsushi Sanagawa, Daisuke Noda, Koji Sakuta
  • Patent number: 10829504
    Abstract: Provided are a novel isocyanide compound, a hydrosilylation reaction catalyst having excellent handling properties and storage properties that allows a hydrosilylation reaction to proceed under moderate conditions by using the isocyanide compound, and a method for producing an addition compound by a hydrosilylation reaction using the hydrosilylation reaction catalyst. A hydrosilylation reaction catalyst prepared from a catalyst precursor comprising a transition metal compound of groups 8, 9, or 10 of the periodic table, excluding platinum, such as an iron carboxylate, cobalt carboxylate, or nickel carboxylate, and a ligand comprising an isocyanide compound having an organosiloxane group.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: November 10, 2020
    Assignees: SHIN-ETSU CHEMICAL CO., LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Koji Sakuta, Hideo Nagashima, Yusuke Sunada, Daisuke Noda
  • Publication number: 20200284946
    Abstract: Provided is a novel donor-acceptor type compound which emits light even in a solid state. The present invention provides an organic optical material comprising a complex formed from (1) a conjugated molecule having (a) at least one electron donating site, (b) at least one electron accepting site, and (c) at least one conjugated site in the same molecule and (2) a compound having a proton donating property or an electron pair accepting property, the complex having a non-covalent interaction at the electron accepting site, wherein the complex is solid at ordinary temperature; and the organic optical material has a property of emitting light having a maximum fluorescence wavelength which causes a Stokes shift having a value corresponding to 5% or more of the value of a maximum absorption wavelength from the maximum absorption wavelength toward the long wavelength side.
    Type: Application
    Filed: August 24, 2018
    Publication date: September 10, 2020
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Yoichiro KUNINOBU, Motomu KANAI, Takeshi YAMAKAWA, Yusuke YOSHIGOE, Zijia WANG, Hideo NAGASHIMA, Atsushi TAHARA
  • Publication number: 20200247957
    Abstract: A cobalt complex represented by formula (1), which exhibits excellent catalytic activity in hydrosilylation reactions and is excellent in terms of handleability and solubility in silicones. {In formula (1), R1 to R3 each independently represent a hydrogen atom or a C1-30 monovalent organic group which may have been substituted by a halogen atom and may be separated by one or more atoms selected from among oxygen, nitrogen, and silicon atoms, and at least one pair among R1 to R3 may be bonded together to form a C1-30 bridged substituent which may be optionally separated by one or more atoms selected from among oxygen, nitrogen, and silicon atoms; the L moieties each independently represent an isocyanide ligand represented by the formula CN—R4 (2) (wherein R4 represents a C1-30 monovalent organic group which may have been substituted by a halogen atom and may be separated by one or more atoms selected from among oxygen, nitrogen, sulfur, and silicon atoms); and n is 4.
    Type: Application
    Filed: September 20, 2018
    Publication date: August 6, 2020
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo NAGASHIMA, Atsushi SANAGAWA, Daisuke NODA, Koji SAKUTA
  • Publication number: 20200165274
    Abstract: Provided are a novel isocyanide compound, a hydrosilylation reaction catalyst having excellent handling properties and storage properties that allows a hydrosilylation reaction to proceed under moderate conditions by using the isocyanide compound, and a method for producing an addition compound by a hydrosilylation reaction using the hydrosilylation reaction catalyst. A hydrosilylation reaction catalyst prepared from a catalyst precursor comprising a transition metal compound of groups 8, 9, or 10 of the periodic table, excluding platinum, such as an iron carboxylate, cobalt carboxylate, or nickel carboxylate, and a ligand comprising an isocyanide compound having an organosiloxane group.
    Type: Application
    Filed: January 18, 2017
    Publication date: May 28, 2020
    Applicants: SHIN-ETSU CHEMICAL CO., LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Koji SAKUTA, Hideo NAGASHIMA, Yusuke SUNADA, Daisuke NODA
  • Patent number: 10597491
    Abstract: A complex that includes a metal fine particle dispersant including a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000; and a metal fine particle, wherein the metal fine particle includes platinum (Pt) or palladium (Pd), the metal fine particle dispersant includes a branched polymer compound of Formula (1):
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: March 24, 2020
    Assignees: NISSAN CHEMICAL CORPORATION, KYUSHU UNIVERSITY
    Inventors: Keisuke Kojima, Akihiro Tanaka, Keisuke Odoi, Hideo Nagashima, Takashi Sue
  • Publication number: 20200087245
    Abstract: Provided are a donor-acceptor type compound having a novel structure and its use.
    Type: Application
    Filed: March 2, 2018
    Publication date: March 19, 2020
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo NAGASHIMA, Atsushi TAHARA, Ikumi KITAHARA, Yoichiro KUNINOBU
  • Publication number: 20200071347
    Abstract: This method is for producing a transition metal complex represented by formula (2), the method comprising reacting a compound containing a transition metal selected from V, Cr, Mo, W, Fe, Ru, Co, Rh, Ni, Pd, and Pt with an isocyanide compound represented by formula (1) in the presence of an alkali metal supported by a solid substance which is insoluble in an organic solvent. This production method can be used to easily and efficiently produce a transition metal complex that includes a predetermined transition metal having an oxidation number of 0 and that has the same or different isocyanide compounds, without using a compound harmful to the human body. (1): (CN)x—R1 {R1 represents a mono- to tri-valent organic group having 1-30 carbon atoms, and x represents an integer of 1-3}.
    Type: Application
    Filed: February 27, 2018
    Publication date: March 5, 2020
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo Nagashima, Atsushi Sanagawa, Daisuke Noda, Koji Sakuta
  • Publication number: 20200001285
    Abstract: Provided is a catalyst which comprises a compound represented by formula (1) and which exhibits activity for at least one type of reaction selected from among hydrosilylation reaction or hydrogenation reaction with respect to an aliphatic unsaturated bond and hydrosilane reduction reaction with respect to a carbon-oxygen unsaturated bond or a carbon-nitrogen unsaturated bond. Formula (1): Mn(Lm) {M represents Fe, Co, or Ni having an oxidation number of 0, L represents an isocyanide ligand represented by formula (2), n denotes an integer of 1-8, and m denotes an integer of 2-12. Formula (2): (CN)x—R1 (R1 represents a mono- to trivalent-organic group having 1-30 carbon atoms, optionally being substituted by a halogen atom, and optionally having interposed therein one or more atoms selected from among O, N, S, and Si; and x denotes an integer of 1-3)}.
    Type: Application
    Filed: February 27, 2018
    Publication date: January 2, 2020
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo NAGASHIMA, Atsushi SANAGAWA, Shoma KAWABATA, Daisuke NODA, Koji SAKUTA
  • Publication number: 20190359771
    Abstract: A complex that includes a metal fine particle dispersant including a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000; and a metal fine particle, wherein the metal fine particle includes platinum (Pt) or palladium (Pd), the metal fine particle dispersant includes a branched polymer compound of Formula (1):
    Type: Application
    Filed: August 6, 2019
    Publication date: November 28, 2019
    Inventors: Keisuke KOJIMA, Akihiro TANAKA, Keisuke ODOI, Hideo NAGASHIMA, Takashi SUE
  • Patent number: 10363551
    Abstract: A mononuclear iron bivalent complex having iron-silicon bonds, which is represented by formula (1), can exhibit an excellent catalytic activity in at least one reaction selected from three reactions, i.e., a hydrosilylation reaction, a hydrogenation reaction and a reaction for reducing a carbonyl compound.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: July 30, 2019
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo Nagashima, Yusuke Sunada, Mina Sawano, Daisuke Noda, Koji Sakuta
  • 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
  • Publication number: 20180243732
    Abstract: A mononuclear iron bivalent complex having iron-silicon bonds, which is represented by formula (1), can exhibit an excellent catalytic activity in at least one reaction selected from three reactions, i.e., a hydrosilylation reaction, a hydrogenation reaction and a reaction for reducing a carbonyl compound.
    Type: Application
    Filed: March 8, 2016
    Publication date: August 30, 2018
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo NAGASHIMA, Yusuke SUNADA, Mina SAWANO, Daisuke NODA, Koji SAKUTA
  • Publication number: 20180200703
    Abstract: A hydrosilylation reaction catalyst prepared from: a prescribed transition metal compound such as iron pivalate, cobalt pivalate, iron acetate, cobalt acetate, or nickel acetate; a ligand comprising t-butylisocyanide or another isocyanide compound; and a borane compound, Grignard reagent, alkoxysilane, or other prescribed promoter makes it possible to promote a hydrosilylation reaction under moderate conditions, and has exceptional handling properties and storage stability.
    Type: Application
    Filed: July 6, 2016
    Publication date: July 19, 2018
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo NAGASHIMA, Yusuke SUNADA, Atsushi TAHARA, Daisuke NODA, 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
  • Patent number: 9884316
    Abstract: A neutral or cationic mononuclear ruthenium divalent complex represented by formula (1) can actualize exceptional catalytic activity in at least one reaction among a hydrosilylation reaction, hydrogenation reaction, and carbonyl compound reduction reaction. (In the formula, R1-R6 each independently represent a hydrogen atom or an alkyl group, aryl group, aralkyl group, organooxy group, monoorganoamino group, diorganoamino group, monoorganophosphino group, diorganophosphino group, monoorganosilyl group, diorganosilyl group, triorganosilyl group, or organothio group optionally substituted by X; at least one pair comprising any of R1-R3 and any of R4-R6 together represents a crosslinkable substituent; X represents a halogen atom, organooxy group, monoorganoamino group, diorganoamino group, or organothio group; L each independently represent a two-electron ligand other than CO and thiourea ligands; two L may bond to each other; and m represents an integer of 3 or 4.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: February 6, 2018
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hideo Nagashima, Yusuke Sunada, Hajime Ogushi, Koji Sakuta