Patents Assigned to Nippon Chemical Industrial Co., Ltd.
  • Publication number: 20220194889
    Abstract: A method for producing an indium carboxylate of the present invention comprises the steps of reacting a hydroxyl group-containing indium carboxylate represented by Formula (1): In(RCOO)3-x(OH)x, wherein R is a straight chain or branched chain aliphatic group having 0 to 5 carbon atoms, and x is a number more than 0 and less than 3, with a lower carboxylic acid represented by the following Formula (2): R?COOH, wherein R? is a hydrogen atom or a straight chain or branched chain aliphatic group having 1 to 5 carbon atoms, and the hydrogen atom in the aliphatic group may be replaced with a halogen atom, so as to obtain a product; and then reacting the product with a higher carboxylic acid having 12 or more carbon atoms.
    Type: Application
    Filed: March 26, 2020
    Publication date: June 23, 2022
    Applicant: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Kazuhiro Nakatsui, Taiki Tsuzukiishi
  • Publication number: 20220195299
    Abstract: The present invention relates to a method for producing an InP-based quantum dot precursor from a phosphorus source and an indium source, in which a silylphosphine compound represented by the following Formula (1) with a content of a compound represented by the following Formula (2) of 0.3 mol % or less is used as the phosphorus source. Further, the present invention provides a method for producing an InP-based quantum dot comprising heating an InP quantum dot precursor to a temperature of 200° C. or more and 350° C. or less to obtain an InP quantum dot. (R is as defined in the specification.
    Type: Application
    Filed: March 26, 2020
    Publication date: June 23, 2022
    Applicant: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Kazuhiro Nakatsui, Taiki Tsuzukiishi, Tomo Sakanoue
  • Publication number: 20220169667
    Abstract: A production method by which a biarylphosphine useful as a Buchwald phosphine ligand can be obtained in high purity is provided through an industrially advantageous process. The production method of a biarylphosphine comprises a step A of reacting a lithiated product obtained through lithiation of a halogenated benzene derivative with a benzene derivative to obtain a biphenyl derivative, and a step B of the reacting the biphenyl derivative with a halogenated phosphine. In the step A, the charge molar ratio of the halogenated benzene derivative to the benzene derivative is preferably 1.0 to 5.0.
    Type: Application
    Filed: March 30, 2020
    Publication date: June 2, 2022
    Applicant: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Ken Tamura, Yuki Sawatsugawa, Natsuhiro Sano
  • Patent number: 11332599
    Abstract: There is provided a modified zirconium phosphate tungstate which effectively suppresses the elution of phosphorus ions even when it contacts with water, can develop the performance excellent as a negative thermal expansion material, and can be dispersed in a polymer compound such as a resin, and use of which enables a low-thermal expansive material containing a negative thermal expansion filler to be well produced. The surface of a zirconium phosphate tungstate particle is coated with an inorganic compound containing one or two or more elements (M) selected from Zn, Si, Al, Ba, Ca, Mg, Ti, V, Sn, Co, Fe and Zr. The BET specific surface area of the zirconium phosphate tungstate particle is preferably 0.1 m2/g to 50 m2/g.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: May 17, 2022
    Assignee: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Junya Fukazawa, Toru Hata, Takuma Kato
  • Patent number: 11311934
    Abstract: The present invention provides covered particles wherein insulating layers cover the surfaces of electroconductive particles, and the covered particles are excellent in the adhesion between the surfaces of the electroconductive particles and the insulating layers. The covered particles includes: electroconductive particles in which metal films are formed on the surfaces of core materials, and a triazole-based compound is disposed on the outer surfaces on the sides opposite to the core materials in the metal films; and insulating layers covering the electroconductive particles, and the insulating layers comprise a compound having phosphonium groups.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: April 26, 2022
    Assignee: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Tomonao Naruhashi, Hiroyuki Inaba
  • Publication number: 20220093845
    Abstract: Provided is a piezoelectric material filler including alkali niobate compound particles having a ratio (K/(Na+K)) of the number of moles of potassium to the total number of moles of sodium and potassium of 0.460 to 0.495 in terms of atoms and a ratio ((Li+Na+K)/Nb) of the total number of moles of alkali metal elements to the number of moles of niobium of 0.995 to 1.005 in terms of atoms. The present invention can provide a piezoelectric material filler having excellent piezoelectric properties, and a composite piezoelectric material including the piezoelectric material filler and a polymer matrix.
    Type: Application
    Filed: December 6, 2021
    Publication date: March 24, 2022
    Applicant: Nippon Chemical Industrial Co., Ltd.
    Inventors: Shinji Tanabe, Hajime Kunita, Shunsuke Kikuchi
  • Patent number: 11261090
    Abstract: Provided is a method for producing a lithium cobalt phosphate represented by the following general formula (1):LixCo1-yMyPO4 (1), wherein 0.8?x?1.2 and 0?y?0.5, and M represents one or two or more metal elements selected from the group consisting of Mg, Zn, Cu, Fe, Cr, Mn, Ni, Al, B, Na, K, F, Cl, Br, I, Ca, Sr, Ba, Ti, Zr, Hf, Nb, Ta, Y, Yb, Si, S, Mo, W, V, Bi, Te, Pb, Ag, Cd, In, Sn, Sb, Ga, Ge, La, Ce, Nd, Sm, Eu, Tb, Dy, and Ho; the method comprising: a first step of adding an organic acid and cobalt hydroxide to a water solvent, and then adding phosphoric acid and lithium hydroxide thereto to prepare an aqueous raw material slurry (1); a second step of wet-pulverizing the aqueous raw material slurry (1) with a media mill to obtain a slurry (2) containing a pulverized product of raw materials; a third step of spray-drying the slurry (2) containing the pulverized product of raw materials to obtain a reaction precursor; and a fourth step of firing the reaction precursor.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: March 1, 2022
    Assignee: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventor: Junya Fukazawa
  • Publication number: 20220041841
    Abstract: There is provided a modified zirconium phosphate tungstate which effectively suppresses the elution of phosphorus ions even when it contacts with water, can develop the performance excellent as a negative thermal expansion material, and can be dispersed in a polymer compound such as a resin, and use of which enables a low-thermal expansive material containing a negative thermal expansion filler to be well produced. The surface of a zirconium phosphate tungstate particle is coated with an inorganic compound containing one or two or more elements (M) selected from Zn, Si, Al, Ba, Ca, Mg, Ti, V, Sn, Co, Fe and Zr. The BET specific surface area of the zirconium phosphate tungstate particle is preferably 0.1 m2/g to 50 m2/g.
    Type: Application
    Filed: February 28, 2020
    Publication date: February 10, 2022
    Applicant: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Junya Fukazawa, Toru Hata, Takuma Kato
  • Publication number: 20220045356
    Abstract: An X-ray diffractometrically single-phase lithium titanium phosphate can be obtained by an industrially advantageous method. Provided is a method for producing the lithium titanium phosphate having a NASICON structure represented by the following general formula (1): Li1+xMx(Ti1?yAy)2?x(PO4)3 (1), and provided is a method comprising a first step of preparing a raw material mixed slurry (1) comprising, at least, titanium dioxide, phosphoric acid and a surfactant, a second step of heat treating the raw material mixed slurry (1) to obtain a raw material heat-treated slurry (2), a third step of mixing the raw material heat-treated slurry (2) with a lithium source to obtain a lithium-containing raw material heat-treated slurry (3), a fourth step of subjecting the lithium-containing raw material heat-treated slurry (3) to a spray drying treatment to obtain a reaction precursor containing, at least, Ti, P and Li, and a fifth step of firing the reaction precursor.
    Type: Application
    Filed: January 27, 2020
    Publication date: February 10, 2022
    Applicant: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Junya Fukazawa, Toru Hata, Takuma Kato
  • Patent number: 11239409
    Abstract: Provided is a piezoelectric material filler including alkali niobate compound particles having a ratio (K/(Na+K)) of the number of moles of potassium to the total number of moles of sodium and potassium of 0.460 to 0.495 in terms of atoms and a ratio ((Li+Na+K)/Nb) of the total number of moles of alkali metal elements to the number of moles of niobium of 0.995 to 1.005 in terms of atoms. The present invention can provide a piezoelectric material filler having excellent piezoelectric properties, and a composite piezoelectric material including the piezoelectric material filler and a polymer matrix.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: February 1, 2022
    Assignee: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Shinji Tanabe, Hajime Kunita, Shunsuke Kikuchi
  • Publication number: 20220015369
    Abstract: The present invention addresses the problem of providing phosphine for fumigation, by which clogging of a pipe of a fumigation gas feed device due to impurities is effectively suppressed and which has low spontaneous ignitability. The present invention also addresses the problem of providing a phosphine fumigation method in which clogging of a pipe of a fumigation gas feed device and a possibility of spontaneous ignition are reduced and which is safe. The phosphine for fumigation of the present invention has a P4 content of 10 mass ppm or less and a water content of 10 mass ppm or less. The fumigation method of the present invention includes fumigating a material to be fumigated, using phosphine having a P4 content of 10 mass ppm or less and having a water content of 10 mass ppm or less.
    Type: Application
    Filed: December 20, 2019
    Publication date: January 20, 2022
    Applicant: Nippon Chemical Industrial Co., Ltd.
    Inventor: Hiroya Kawase
  • Patent number: 11213799
    Abstract: An adsorbent capable of adsorbing radioactive antimony, radioactive iodine and radioactive ruthenium, the adsorbent containing cerium(IV) hydroxide in a particle or granular form having a particle size of 250 ?m or more and 1200 ?m or less; and a treatment method of radioactive waste water containing radioactive antimony, radioactive iodine and radioactive ruthenium, the treatment method comprising passing the radioactive waste water containing radioactive antimony, radioactive iodine and radioactive ruthenium through an adsorption column packed with the adsorbent, to adsorb the radioactive antimony, radioactive iodine and radioactive ruthenium on the adsorbent, wherein the absorbent is packed to a height of 10 cm or more and 300 cm or less of the adsorption column, and wherein the radioactive waste water is passed through the adsorption column at a linear velocity (LV) of 1 m/h or more and 40 m/h or less and a space velocity (SV) of 200 h?1 or less.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: January 4, 2022
    Assignees: EBARA CORPORATION, NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Takashi Sakuma, Makoto Komatsu, Takeshi Izumi, Shinsuke Miyabe, Yutaka Kinose, Kiyoshi Satou, Kenta Kozasu, Mari Tokutake, Takeshi Sakamoto, Kaori Sugihara
  • Patent number: 11180516
    Abstract: The phosphine transition metal complex of the present invention is represented by formula (1). Preferably, R1 and R6 are identical groups, R2 and R7 are identical groups, R3 and R8 are identical groups, R4 and R9 are identical groups, R5 and R10 are identical groups, and n and y are identical numbers. The phosphine transition metal complex is suitably obtained by reacting a phosphine derivative represented by formula (2) and a phosphine derivative represented by formula (3) with a salt of a transition metal of gold, copper or silver. See the description for the meanings of the symbols in each formula.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: November 23, 2021
    Assignee: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Kazuhiro Nakatsui, Chiaki Ono, Nobuhiko Oohara, Tsuneo Imamoto, Hiroaki Konishi, Hikaru Abutani
  • Publication number: 20210328211
    Abstract: The positive electrode active substance for a lithium secondary battery includes a mixture of a lithium cobalt composite oxide particle and an inorganic fluoride particle. The method for producing a positive electrode active substance for a lithium secondary battery includes a first step of subjecting a lithium cobalt composite oxide particle and an inorganic fluoride particle to a mixing treatment to thereby obtain a mixture of the lithium cobalt composite oxide particle and the inorganic fluoride particle. The lithium secondary battery uses, as a positive electrode active substance, the positive electrode active substance for a lithium secondary battery of the present invention.
    Type: Application
    Filed: October 9, 2019
    Publication date: October 21, 2021
    Applicant: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Masahiro Kikuchi, Tomonao Naruhashi, Minoru Fukuchi
  • Patent number: 11145862
    Abstract: The positive electrode active substance for a lithium secondary battery includes a mixture of a titanium-containing lithium cobalt composite oxide particle and an inorganic fluoride particle. The method for producing a positive electrode active substance for a lithium secondary battery includes a first step of subjecting a titanium-containing lithium cobalt composite oxide particle and an inorganic fluoride particle to a mixing treatment to thereby obtain a mixture of the titanium-containing lithium cobalt composite oxide particle and the inorganic fluoride particle. The lithium secondary battery uses, as a positive electrode active substance, the positive electrode active substance for a lithium secondary battery of the present invention.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: October 12, 2021
    Assignee: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Masahiro Kikuchi, Tomonao Naruhashi, Minoru Fukuchi
  • Publication number: 20210313572
    Abstract: The positive electrode active substance for a lithium secondary battery includes a mixture of a titanium-containing lithium cobalt composite oxide particle and an inorganic fluoride particle. The method for producing a positive electrode active substance for a lithium secondary battery includes a first step of subjecting a titanium-containing lithium cobalt composite oxide particle and an inorganic fluoride particle to a mixing treatment to thereby obtain a mixture of the titanium-containing lithium cobalt composite oxide particle and the inorganic fluoride particle. The lithium secondary battery uses, as a positive electrode active substance, the positive electrode active substance for a lithium secondary battery of the present invention.
    Type: Application
    Filed: October 9, 2019
    Publication date: October 7, 2021
    Applicant: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Masahiro Kikuchi, Tomonao Naruhashi, Minoru Fukuchi
  • Patent number: 11120922
    Abstract: The present invention provides solidified radioactive waste into which a titanium-containing adsorbent having a radioactive element adsorbed thereto is vitrified, the solidified radioactive waste being capable of confining a large amount of the titanium-containing adsorbent having a radioactive element adsorbed thereto, and furthermore elution of the radioactive element from the vitrified waste being suppressed. The method of the present application includes a step of heat-melting a mixture that includes a titanium-containing adsorbent having a radioactive element adsorbed thereto, a SiO2 source, and an M2O source (M represents an alkali metal element) to form vitrified waste. The titanium-containing adsorbent is preferably one or two or more kind such as silicotitanate, an alkali nonatitanate, and titanium hydroxide.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: September 14, 2021
    Assignee: NIPPON CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Yutaka Kinose, Shinsuke Miyabe
  • Publication number: 20210253612
    Abstract: The phosphine transition metal complex of the present invention is represented by formula (1). Preferably, R1 and R6 are identical groups, R2 and R7 are identical groups, R3 and R8 are identical groups, R4 and R9 are identical groups, R5 and R10 are identical groups, and n and y are identical numbers. The phosphine transition metal complex is suitably obtained by reacting a phosphine derivative represented by formula (2) and a phosphine derivative represented by formula (3) with a salt of a transition metal of gold, copper or silver. See the description for the meanings of the symbols in each formula.
    Type: Application
    Filed: September 26, 2019
    Publication date: August 19, 2021
    Applicant: Nippon Chemical Industrial Co., Ltd.
    Inventors: Kazuhiro Nakatsui, Chiaki Ono, Nobuhiko Oohara, Tsuneo Imamoto, Hiroaki Konishi, Hikaru Abutani
  • Publication number: 20210253426
    Abstract: Provided is a method for producing a lithium cobalt phosphate represented by the following general formula (1):LixCo1-yMyPO4 (1), wherein 0.8?x?1.2 and 0?y?0.5, and M represents one or two or more metal elements selected from the group consisting of Mg, Zn, Cu, Fe, Cr, Mn, Ni, Al, B, Na, K, F, Cl, Br, I, Ca, Sr, Ba, Ti, Zr, Hf, Nb, Ta, Y, Yb, Si, S, Mo, W, V, Bi, Te, Pb, Ag, Cd, In, Sn, Sb, Ga, Ge, La, Ce, Nd, Sm, Eu, Tb, Dy, and Ho; the method comprising: a first step of adding an organic acid and cobalt hydroxide to a water solvent, and then adding phosphoric acid and lithium hydroxide thereto to prepare an aqueous raw material slurry (1); a second step of wet-pulverizing the aqueous raw material slurry (1) with a media mill to obtain a slurry (2) containing a pulverized product of raw materials; a third step of spray-drying the slurry (2) containing the pulverized product of raw materials to obtain a reaction precursor; and a fourth step of firing the reaction precursor.
    Type: Application
    Filed: June 27, 2019
    Publication date: August 19, 2021
    Applicant: Nippon Chemical Industrial Co., Ltd.
    Inventor: Junya Fukazawa
  • Publication number: 20210246073
    Abstract: A negative thermal expansion material made of zirconium phosphate tungstate containing an Al atom, and having a thermal expansion coefficient of ?2.0×10?6 to ?3.3×10?6/K. According to the present invention, a negative thermal expansion material made of zirconium phosphate tungstate having various thermal expansion coefficients, and an industrially advantageous manufacturing method thereof can be provided.
    Type: Application
    Filed: June 14, 2019
    Publication date: August 12, 2021
    Applicant: Nippon Chemical Industrial Co., Ltd.
    Inventors: Junya Fukazawa, Toru Hata