Patents by Inventor Atsushi Shirai

Atsushi Shirai 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).

  • Publication number: 20220127144
    Abstract: An object of this invention is to provide a simple method for producing sulfur tetrafluoride. The object is achieved by a method for producing sulfur tetrafluoride, comprising step A of reacting a fluorinated halogen compound with sulfur chloride, the fluorinated halogen compound being represented by formula: XFn, wherein X is chlorine, bromine, or iodine; and n is a natural number of 1 to 5.
    Type: Application
    Filed: January 6, 2022
    Publication date: April 28, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tatsuya OHTSUKA, Yoshichika KUROKI, Atsushi SHIRAI, Moe HOSOKAWA, Yosuke KISHIKAWA
  • Publication number: 20210371391
    Abstract: An object of the present disclosure is to provide a method for producing an organic compound, and a composition. The object is achieved by a method for producing a compound represented by formula (1): wherein X represents —O—, an optionally substituted imino group, or —S—, R1 represents a hydrogen atom or a hydrocarbyl group optionally having at least one substituent, and R2 represents a hydrogen atom or a monovalent organic group, or R1 and R2, together with X and one carbon atom respectively adjacent to R1 and R2, may form a heterocyclic ring optionally having at least one substituent, R3 represents a hydrogen atom or a monovalent organic group, and R4 represents —CF2CH3 or —CH2CHF2; the method including step A of reacting a compound represented by formula (2): wherein the alphabetical symbols are as defined above, with vinylidene fluoride under light irradiation.
    Type: Application
    Filed: August 6, 2021
    Publication date: December 2, 2021
    Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY
    Inventors: Atsushi SHIRAI, Yoshichika KUROKI, Nobuyuki MASE
  • Publication number: 20210363077
    Abstract: The problem to be solved by the present invention is to provide a novel method for producing a difluoromethylene compound, in particular, a simple method for producing a difluoromethylene compound. This problem is solved by a method for producing a difluoromethylene compound (I) containing at least one —CF2— moiety, the method comprising step A of allowing IF5 and a disulfide compound (III) of the formula: RA—S—S—RA (wherein RA, in each occurrence, independently represents aryl optionally having at least one substituent or alkyl optionally having at least one substituent) to act on a carbonyl compound (II) containing at least one —C(O)— moiety.
    Type: Application
    Filed: April 25, 2019
    Publication date: November 25, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tatsuya OHTSUKA, Yoshichika KUROKI, Atsushi SHIRAI, Moe HOSOKAWA, Yosuke KISHIKAWA
  • Publication number: 20210206998
    Abstract: An object of the present invention is to provide a novel liquid repellent. A liquid repellent including a poly(hydrocarbylamine) derivative, which is poly(hydrocarbylamine) substituted by one or more substituents, wherein at least one of the substituents is a substituent on an amine nitrogen in the poly(hydrocarbylamine), and is represented by the formula: —Ray in which Ray is a hydroxyethyl group optionally having one or more substituents (at least one of the substituents is an alkyl group optionally having one or more substituents).
    Type: Application
    Filed: April 12, 2019
    Publication date: July 8, 2021
    Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY
    Inventors: Tsutomu KOBAYASHI, Atsushi SHIRAI, Yosuke KISHIKAWA, Seiji UJIIE, Shiori TOMITAKA
  • Patent number: 10851031
    Abstract: The problem to be solved by the present invention is to provide a novel method for producing a difluoromethylene compound. This problem is solved by a method for producing a difluoromethylene compound containing a —CF2— moiety, the method comprising step A of mixing: a) a carbonyl compound containing a —C(O)— moiety; b) optionally an amine; c) a fluoride represented by the formula: MF, wherein M represents a Group 1 element of the periodic table; d) a halogenated fluorine compound represented by the formula: XFn, wherein X represents chlorine, bromine, or iodine, and n is a natural number of 1 to 5; and e) sulfur chloride.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: December 1, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tatsuya Ohtsuka, Yoshichika Kuroki, Atsushi Shirai, Moe Hosokawa, Yosuke Kishikawa
  • Publication number: 20200087230
    Abstract: The problem to be solved by the present invention is to provide a novel method for producing a difluoromethylene compound. This problem is solved by a method for producing a difluoromethylene compound containing a —CF2— moiety, the method comprising step A of mixing: a) a carbonyl compound containing a —C(O)— moiety; b) optionally an amine; c) a fluoride represented by the formula: MF, wherein M represents a Group 1 element of the periodic table; d) a halogenated fluorine compound represented by the formula: XFn, wherein X represents chlorine, bromine, or iodine, and n is a natural number of 1 to 5; and e) sulfur chloride.
    Type: Application
    Filed: December 22, 2017
    Publication date: March 19, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tatsuya OHTSUKA, Yoshichika KUROKI, Atsushi SHIRAI, Moe HOSOKAWA, Yosuke KISHIKAWA
  • Publication number: 20190375636
    Abstract: An object of this invention is to provide a simple method for producing sulfur tetrafluoride. The object is achieved by a method for producing sulfur tetrafluoride, comprising step A of reacting a fluorinated halogen compound with sulfur chloride, the fluorinated halogen compound being represented by formula: XFn, wherein X is chlorine, bromine, or iodine; and n is a natural number of 1 to 5.
    Type: Application
    Filed: November 13, 2017
    Publication date: December 12, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tatsuya OHTSUKA, Yoshichika KUROKI, Atsushi SHIRAI, Moe HOSOKAWA, Yosuke KISHIKAWA
  • Patent number: 10479681
    Abstract: An object of the present invention is to provide a novel substance that has a high reactivity as a fluorinating agent, is effectively used in various fluorination reactions, and is safely handled even in air. As the solution for achieving this object, the present invention provides a complex obtained by reacting bromine trifluoride with at least one metal halide selected from the group consisting of halogenated metals and halogenated hydrogen metals in a nonpolar solvent. This complex serves as a fluorinating agent that provides excellent fluorination performance and that is stable in air.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: November 19, 2019
    Assignees: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Shoji Hara, Yosuke Kishikawa, Atsushi Shirai, Takashi Namikawa, Sumi Ishihara
  • Publication number: 20190152779
    Abstract: An object of the present invention is to provide a novel substance that has a high reactivity as a fluorinating agent, is effectively used in various fluorination reactions, and is safely handled even in air. As the solution for achieving this object, the present invention provides a complex obtained by reacting bromine trifluoride with at least one metal halide selected from the group consisting of halogenated metals and halogenated hydrogen metals in a nonpolar solvent. This complex serves as a fluorinating agent that provides excellent fluorination performance and that is stable in air.
    Type: Application
    Filed: January 30, 2019
    Publication date: May 23, 2019
    Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVESITY
    Inventors: Shoji HARA, Yosuke KISHIKAWA, Atsushi SHIRAI, Takashi NAMIKAWA, Sumi ISHIHARA
  • Patent number: 10233080
    Abstract: An object of the present invention is to provide a novel substance that has a high reactivity as a fluorinating agent, is effectively used in various fluorination reactions, and is safely handled even in air. As the solution for achieving this object, the present invention provides a complex obtained by reacting bromine trifluoride with at least one metal halide selected from the group consisting of halogenated metals and halogenated hydrogen metals in a nonpolar solvent. This complex serves as a fluorinating agent that provides excellent fluorination performance and that is stable in air.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: March 19, 2019
    Assignees: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Shoji Hara, Yosuke Kishikawa, Atsushi Shirai, Takashi Namikawa, Sumi Ishihara
  • Patent number: 9758455
    Abstract: Object: An object of the present invention is to provide a method for producing, with a high yield, a fluorinated organic compound, the fluorinated organic compound having not been produced with a sufficient yield by a conventional method for producing a fluorinated organic compound using a fluorinating agent containing IF5-pyridine-HF alone. Another object of the present invention is to provide a fluorinating reagent. Means for achieving the object: A method for producing a fluorinated organic compound comprising step A of fluorinating an organic compound by bringing the organic compound into contact with (1) IF5-pyridine-HF and (2) at least one additive selected from the group consisting of amine hydrogen fluorides, XaF (wherein Xa represents hydrogen, potassium, sodium, or lithium), oxidizers, and reducing agents.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: September 12, 2017
    Assignees: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Masahiro Higashi, Yosuke Kishikawa, Atsushi Shirai, Takashi Namikawa, Sumi Ishihara, Shoji Hara
  • Patent number: 9593058
    Abstract: An object of the present invention is to provide a production method that makes it possible to produce 1,1-dibromo-1-fluoroethane easily and sustainably. The present invention provides a method for producing 1,1-dibromo-1-fluoroethane, the method comprising step A of reacting 1,1-dibromoethylene with hydrogen fluoride to obtain 1,1-dibromo-1-fluoroethane.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: March 14, 2017
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi Shirai, Masatoshi Nose, Yosuke Kishikawa, Tatsuya Ohtsuka, Sumi Ishihara
  • Publication number: 20160332877
    Abstract: An object of the present invention is to provide a novel substance that has a high reactivity as a fluorinating agent, is effectively used in various fluorination reactions, and is safely handled even in air. As the solution for achieving this object, the present invention provides a complex obtained by reacting bromine trifluoride with at least one metal halide selected from the group consisting of halogenated metals and halogenated hydrogen metals in a nonpolar solvent. This complex serves as a fluorinating agent that provides excellent fluorination performance and that is stable in air.
    Type: Application
    Filed: October 2, 2014
    Publication date: November 17, 2016
    Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Shoji HARA, Yosuke KISHIKAWA, Atsushi SHIRAI, Takashi NAMIKAWA, Sumi ISHIHARA
  • Publication number: 20160221900
    Abstract: An object of the present invention is to provide a production method that makes it possible to produce 1,1-dibromo-1-fluoroethane easily and sustainably. The present invention provides a method for producing 1,1-dibromo-1-fluoroethane, the method comprising step A of reacting 1,1-dibromoethylene with hydrogen fluoride to obtain 1,1-dibromo-1-fluoroethane.
    Type: Application
    Filed: September 3, 2014
    Publication date: August 4, 2016
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi SHIRAI, Masatoshi NOSE, Yosuke KISHIKAWA, Tatsuya OHTSUKA, Sumi ISHIHARA
  • Publication number: 20150315136
    Abstract: Object: An object of the present invention is to provide a method for producing, with a high yield, a fluorinated organic compound, the fluorinated organic compound having not been produced with a sufficient yield by a conventional method for producing a fluorinated organic compound using a fluorinating agent containing IF5-pyridine-HF alone. Another object of the present invention is to provide a fluorinating reagent. Means for achieving the object: A method for producing a fluorinated organic compound comprising step A of fluorinating an organic compound by bringing the organic compound into contact with (1) IF5-pyridine-HF and (2) at least one additive selected from the group consisting of amine hydrogen fluorides, XaF (wherein Xa represents hydrogen, potassium, sodium, or lithium), oxidizers, and reducing agents.
    Type: Application
    Filed: April 1, 2015
    Publication date: November 5, 2015
    Inventors: Masahiro HIGASHI, Yosuke KISHIKAWA, Atsushi SHIRAI, Takashi NAMIKAWA, Sumi ISHIHARA, Shoji HARA
  • Publication number: 20060025688
    Abstract: A blood flow visualizing diagnostic apparatus characterized by having an ultrasonic measurement unit 120 which emits an ultrasonic beam toward a blood vessel inside a human body to receive the reflected ultrasonic signal, an analysis processing unit 220 which obtains a blood vessel shape and a blood flow velocity in the blood vessel by the received signal, a simulation unit 244 which sets computational lattices on the basis of the blood vessel shape obtained by the analysis processing unit 220 to simulate the blood flow velocity and a pressure distribution, a feedback unit 246 which computes an error between the blood flow velocity obtained by the analysis processing unit and the blood flow velocity obtained by the simulation unit 244 to feed back the error to the simulation unit 244, and display units 260 and 140 which display the blood flow velocity and the pressure distribution output from the simulation unit after the feedback.
    Type: Application
    Filed: October 2, 2003
    Publication date: February 2, 2006
    Applicant: TOHOKU TECHNO ARCH CO. LTD.
    Inventors: Toshiyuki Hayase, Kenichi Funamoto, Atsushi Shirai, Tomoyuki Yambe, Yoshifumi Saijo
  • Patent number: 5122235
    Abstract: Disclosed herein is a process for removing chloroprene by subjecting chloroprene-containing 1,2-dichloroethane to heat treatment at a temperature in the range of from the boiling point (85.degree. C.) of 1,2-dichloroethane to the thermal cracking temperature (300.degree. C.) of 1,2-dichloroethane. In particular, the process can be suitably applied to a liquid distillate from a low-boiling material separation column in a step in which 1,2-dichloroethane used as a raw material for production of vinyl chloride is purified by using a fractionation column.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: June 16, 1992
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kenji Shirai, Seiji Nagae, Tadashi Naito, Atsushi Shirai