Patents by Inventor Kazuki Hirasada

Kazuki Hirasada 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: 10005742
    Abstract: The present invention provides a method for producing an epoxy compound by a reaction of an olefin compound with hydrogen peroxide, wherein the epoxy compound is stably and safely produced using a hydrogen peroxide stabilizer for reducing an oxygen gas generated from hydrogen peroxide. A method for producing an epoxy compound by a reaction of an olefin compound with hydrogen peroxide, wherein the reaction is carried out in the presence of an organophosphorus compound in such a reaction medium that the pH is maintained within a range of more than 7.5 and less than 12.0. The olefin compound may be 1,3,5-tris-(alkenyl)-isocyanurate. The alkenyl group in the olefin compound may be 3-butenyl group, 4-pentenyl group, 5-hexenyl group, 6-heptenyl group, or 7-octenyl group. The epoxy compound may be 1,3,5-tris-(epoxyalkyl)-isocyanurate. The reaction medium may be such a reaction medium that the pH is maintained within a range of 8.0 to 10.5.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: June 26, 2018
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Kazuki Hirasada, Yutaro Tsuda
  • Publication number: 20170275258
    Abstract: The present invention provides a method for producing an epoxy compound by a reaction of an olefin compound with hydrogen peroxide, wherein the epoxy compound is stably and safely produced using a hydrogen peroxide stabilizer for reducing an oxygen gas generated from hydrogen peroxide. A method for producing an epoxy compound by a reaction of an olefin compound with hydrogen peroxide, wherein the reaction is carried out in the presence of an organophosphorus compound in such a reaction medium that the pH is maintained within a range of more than 7.5 and less than 12.0. The olefin compound may be 1,3,5-tris-(alkenyl)-isocyanurate. The alkenyl group in the olefin compound may be 3-butenyl group, 4-pentenyl group, 5-hexenyl group, 6-heptenyl group, or 7-octenyl group. The epoxy compound may be 1,3,5-tris-(epoxyalkyl)-isocyanurate. The reaction medium may be such a reaction medium that the pH is maintained within a range of 8.0 to 10.5.
    Type: Application
    Filed: August 11, 2015
    Publication date: September 28, 2017
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Kazuki HIRASADA, Yutaro TSUDA
  • Patent number: 9464074
    Abstract: There is provided a method for producing an epoxy compound having an epoxy ring bonded to a triazinetrione ring via a long chain alkylene group, an olefin compound having a specific structure is used to efficiently obtain an epoxy compound of which an olefin moiety is epoxidized in high yield. A method for producing an epoxy compound of Formula (2): including reacting a triolefin compound of the following Formula (1): (In the above-mentioned Formulae, R1 to R9 are each independently a hydrogen atom or a methyl group; and n1 to n3 are each independently an integer of 1 to 4) with hydrogen peroxide, a nitrile compound, and an alkaline substance in a solvent. The nitrile compound is an aliphatic nitrile compound or an aromatic nitrile compound. The alkaline substance is phosphate, carbonate, or an alkaline metal hydroxide.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: October 11, 2016
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Nobuyuki Kakiuchi, Kazuki Hirasada, Hiroki Yamaguchi, Yutaro Tsuda
  • Patent number: 9180201
    Abstract: There is provided a practical method for preparing lipopeptide compounds, which method is capable of inexpensive mass production without requiring complicated operations. The lipopeptide compound of formula (3): is produced by reacting an ester compound of formula (1): with an ?-amino acid compound of formula (2): in the presence of a base and within a solvent containing a nonpolar organic solvent.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: November 10, 2015
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Nobuyuki Kakiuchi, Takeaki Shoji, Kazuki Hirasada, Keigo Matsumoto, Hiroki Yamaguchi
  • Publication number: 20150284372
    Abstract: There is provided a method for producing an epoxy compound having an epoxy ring bonded to a triazinetrione ring via a long chain alkylene group, an olefin compound having a specific structure is used to efficiently obtain an epoxy compound of which an olefin moiety is epoxidized in high yield. A method for producing an epoxy compound of Formula (2): including reacting a triolefin compound of the following Formula (1): (In the above-mentioned Formulae, R1 to R9 are each independently a hydrogen atom or a methyl group; and n1 to n3 are each independently an integer of 1 to 4) with hydrogen peroxide, a nitrile compound, and an alkaline substance in a solvent. The nitrile compound is an aliphatic nitrile compound or an aromatic nitrile compound. The alkaline substance is phosphate, carbonate, or an alkaline metal hydroxide.
    Type: Application
    Filed: October 21, 2013
    Publication date: October 8, 2015
    Inventors: Nobuyuki Kakiuchi, Kazuki Hirasada, Hiroki Yamaguchi, Yutaro Tsuda
  • Publication number: 20120253012
    Abstract: There is provided a practical method for preparing lipopeptide compounds, which method is capable of inexpensive mass production without requiring complicated operations. The lipopeptide compound of formula (3): is produced by reacting an ester compound of formula (1): with an ?-amino acid compound of formula (2): in the presence of a base and within a solvent containing a nonpolar organic solvent.
    Type: Application
    Filed: September 7, 2010
    Publication date: October 4, 2012
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Nobuyuki Kakiuchi, Takeaki Shoji, Kazuki Hirasada, Keigo Matsumoto, Hiroki Yamaguchi