Patents by Inventor Naoko Shirota

Naoko Shirota 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: 11732153
    Abstract: To provide a coating liquid composition containing a fluororesin, whereby a film excellent in the surface flatness can be formed by a plate printing method. A coating liquid composition comprising a fluororesin having an aliphatic ring in the main chain and a fluorinated solvent, wherein the fluorinated solvent has a boiling point of at least 185° C., and the composition has a viscosity of at most 1,000 mP·s at 25° C.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: August 22, 2023
    Assignee: AGC Inc.
    Inventors: Naoko Shirota, Miyako Sasaki, Takefumi Abe
  • Publication number: 20180371284
    Abstract: To provide a coating liquid composition containing a fluororesin, whereby a film excellent in the surface flatness can be formed by a plate printing method. A coating liquid composition comprising a fluororesin having an aliphatic ring in the main chain and a fluorinated solvent, wherein the fluorinated solvent has a boiling point of at least 185° C., and the composition has a viscosity of at most 1,000 mP·s at 25° C.
    Type: Application
    Filed: July 27, 2018
    Publication date: December 27, 2018
    Applicant: AGC Inc.
    Inventors: Naoko SHIROTA, Miyako SASAKI, Takefumi ABE
  • Patent number: 9617379
    Abstract: The present invention relates to a method for producing a carbonate compound and methacrylic acid or an ester thereof, containing a step (a1) of obtaining hexachloroacetone and hydrogen chloride from acetone and chlorine molecule, a step (a2) of obtaining a dialkyl carbonate and chloroform from hexachloroacetone and an alkyl alcohol, a step (b1) of obtaining 1,1,1-trichloro-2-methyl-2-propanol from chloroform and acetone, a step (b2+b3 or b4) of obtaining methacrylic acid or an ester thereof and hydrogen chloride from 1,1,1-trichloro-2-methyl-2-propanol and water or an alcohol, and a step (c1 or c2) of obtaining chlorine molecule by reacting hydrogen chloride with oxygen molecule.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: April 11, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takashi Okazoe, Masayuki Miyazaki, Kazuya Oharu, Tomoyuki Fujita, Shinji Wada, Koichi Murata, Naoko Shirota
  • Patent number: 9598345
    Abstract: The present invention relates to a method for producing an unsaturated-acid ester or an unsaturated acid, containing a step of reacting a compound (1) represented by the following formula (1) with a compound represented by the following formula (2) (excluding the compound (1)) in the presence of a Lewis acid catalyst at a temperature of the boiling point of the compound (1) or higher and 350° C. or lower, thereby obtaining products including a compound represented by the following formula (3): (in formula (1) and formula (3), R1, R2 and R4 each independently may be hydrogen atom or an alkyl group, R3 and R5 each independently are hydrogen atom or a deuterium atom, and X is a halogen atom; in formula (2) and formula (3), R6 may be hydrogen atom, an alkyl group or an aryl group, and R7 is hydrogen atom or a deuterium atom).
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: March 21, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Tomoyuki Fujita, Koichi Murata, Naoko Shirota, Yusuke Suzuki, Daisuke Jomuta
  • Publication number: 20160347905
    Abstract: The present invention relates to a method for producing a carbonate compound and methacrylic acid or an ester thereof, containing a step (a1) of obtaining hexachloroacetone and hydrogen chloride from acetone and chlorine molecule, a step (a2) of obtaining a dialkyl carbonate and chloroform from hexachloroacetone and an alkyl alcohol, a step (b1) of obtaining 1,1,1-trichloro-2-methyl-2-propanol from chloroform and acetone, a step (b2+b3 or b4) of obtaining methacrylic acid or an ester thereof and hydrogen chloride from 1,1,1-trichloro-2-methyl-2-propanol and water or an alcohol, and a step (c1 or c2) of obtaining chlorine molecule by reacting hydrogen chloride with oxygen molecule.
    Type: Application
    Filed: August 11, 2016
    Publication date: December 1, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Takashi OKAZOE, Masayuki MIYAZAKI, Kazuya OHARU, Tomoyuki FUJITA, Shinji WADA, Koichi MURATA, Naoko SHIROTA
  • Patent number: 9447235
    Abstract: The present invention relates to a method of producing polycarbonate containing following step (a) and step (b), (a) a step of reacting a specific fluorine-containing carbonate (Compound (1), etc.) and an aromatic dihydroxy compound in the presence of a condensation catalyst, to obtain a prepolymer, and (b) a step of heating the prepolymer at a temperature which is lower than a melting temperature of the prepolymer and performing solid phase polymerization on the prepolymer while a fluorine-containing alcohol that is produced as a by-product is discharged out of a system, to obtain a polycarbonate.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: September 20, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Naoko Shirota, Takashi Okazoe, Kimiaki Kashiwagi
  • Patent number: 9427777
    Abstract: To provide a process for producing a charge retention medium, with which a coating film (precursor of a charge retention medium) containing a fluorinated copolymer having repeating units based on tetrafluoroethylene and repeating units based on ethylene can easily be formed on the surface of a substrate, even in a case where the surface of the substrate has a complicated shape. A process for producing a charge retention medium (electret 30), which comprises a step of applying a coating composition containing a fluorinated copolymer (A) having repeating units based on tetrafluoroethylene and repeating units based on ethylene, and an organic solvent (C), to a substrate (first substrate 10) to form a coating film.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: August 30, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takashi Nakano, Kuniko Okano, Naoko Shirota, Kimiaki Kashiwagi, Yoshitomi Morizawa, Yoshiki Hamatani
  • Publication number: 20160122279
    Abstract: The present invention relates to a method for producing an unsaturated-acid ester or an unsaturated acid, containing a step of reacting a compound (1) represented by the following formula (1) with a compound represented by the following formula (2) (excluding the compound (1)) in the presence of a Lewis acid catalyst at a temperature of the boiling point of the compound (1) or higher and 350° C. or lower, thereby obtaining products including a compound represented by the following formula (3): (in formula (1) and formula (3), R1, R2 and R4 each independently may be hydrogen atom or an alkyl group, R3 and R5 each independently are hydrogen atom or a deuterium atom, and X is a halogen atom; in formula (2) and formula (3), R6 may be hydrogen atom, an alkyl group or an aryl group, and R7 is hydrogen atom or a deuterium atom).
    Type: Application
    Filed: January 8, 2016
    Publication date: May 5, 2016
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Tomoyuki FUJITA, Koichi MURATA, Naoko SHIROTA, Yusuke SUZUKI, Daisuke JOMUTA
  • Publication number: 20160032046
    Abstract: The present invention relates to a method of producing polycarbonate containing following step (a) and step (b), (a) a step of reacting a specific fluorine-containing carbonate (Compound (1), etc.) and an aromatic dihydroxy compound in the presence of a condensation catalyst, to obtain a prepolymer, and (b) a step of heating the prepolymer at a temperature which is lower than a melting temperature of the prepolymer and performing solid phase polymerization on the prepolymer while a fluorine-containing alcohol that is produced as a by-product is discharged out of a system, to obtain a polycarbonate.
    Type: Application
    Filed: October 15, 2015
    Publication date: February 4, 2016
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Naoko SHIROTA, Takashi Okazoe, Kimiaki Kashiwagi
  • Patent number: 9012565
    Abstract: To provide a water/oil repellent agent and a water/oil repellent composition which is capable of providing an article surface with a sufficient water/oil repellency, while placing little burden on the environment. One comprising a reaction product obtained by reacting a fluoromonool having a polyfluoroalkyl moiety having at most 6 carbon atoms as an alcohol, an alkane monool having at least 18 carbon atoms, and MDI or a polymeric MD, and by treating an article with such a water/oil repellent agent, a sufficient water/oil repellency can be imparted, while placing little burden on the environment. By treating the above-mentioned article with the water/oil repellent composition of the present invention, a high quality water/oil repellency can be imparted to the article.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: April 21, 2015
    Assignee: Asahi Glass Company, Limited
    Inventors: Taiki Hoshino, Naoko Shirota
  • Publication number: 20130261248
    Abstract: To provide a charge retention medium having a surface potential at a practical level, although it is obtained from a composition containing a fluorinated copolymer having repeating units based on tetrafluoroethylene and repeating units based on ethylene. A charge retention medium (electret 30) which is obtained from a composition containing a fluorinated copolymer (A) having repeating units based on tetrafluoroethylene and repeating units based on ethylene; and at least one charge aid (B) selected from the group consisting of a compound having at least one amino group and at least one reactive functional group (excluding an amino group) and a compound having at least two amino groups and having no reactive functional group (excluding an amino group).
    Type: Application
    Filed: May 29, 2013
    Publication date: October 3, 2013
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: TAKASHI NAKANO, KIMIAKI KASHIWAGI, KUNIKO OKANO, NAOKO SHIROTA, YOSHITOMI MORIZAWA, YOSHIKI HAMATANI
  • Publication number: 20130017334
    Abstract: To provide a coating composition containing a fluorinated copolymer having repeating units derived from ethylene and tetrafluoroethylene, which can be formed into a coating film by coating and which can be produced at a relatively low temperature, and a process for its production, and a process for forming a coating film of the fluorinated copolymer by using this composition, which can be carried out at a relatively low temperature. A coating composition comprising microparticles of a fluorinated copolymer (ETFE) having repeating units derived from ethylene and repeating units derived from tetrafluoroethylene, and a solvent capable of dissolving ETFE at a temperature of not higher than the melting point of ETFE, wherein the microparticles of ETFE are microparticles precipitated from a solution having ETFE dissolved in the solvent, and are dispersed in the solvent.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 17, 2013
    Applicant: ASAHI GLASS COMPANY, Limited
    Inventors: Takashi NAKANO, Tomoyuki FUJITA, Hiroshi YAMAMOTO, Yoshitomo MORIZAWA, Naoko SHIROTA
  • Patent number: 8338529
    Abstract: To provide an oil repellent copolymer capable of forming an oil repellent film which is excellent in durability. An oil repellent copolymer characterized by comprising a repeating unit (A) having a polyfluoroalkyl group, a repeating unit (B) having a fluorescent functional group, and a repeating unit (C) having an ester bond other than an ester bond derived from acrylic acid, and/or a hydroxyl group.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: December 25, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Taiki Hoshino, Naoko Shirota, Nobuyuki Otozawa, Akihiko Asakawa
  • Patent number: 8236901
    Abstract: Provided is a novel fluorinated compound, a fluoropolymer, and a method for producing the compound. A monomer of the compound has a formula F2?CFCF2C(X)(C(O)OZ)(CH2)nCR?CHR, wherein X is a hydrogen atom, a cyano group, or a group of formula —C(O)OZ; Z is a hydrogen atom or a C1-20 monovalent organic group, n is 0, 1, or 2; and R is a hydrogen atom or a C1-20 monovalent organic group.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: August 7, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Koichi Murata, Naoko Shirota, Osamu Yokokoji, Yoko Takebe
  • Publication number: 20120085960
    Abstract: To provide a water/oil repellent agent and a water/oil repellent composition which is capable of providing an article surface with a sufficient water/oil repellency, while placing little burden on the environment. One comprising a reaction product obtained by reacting a fluoromonool having a polyfluoroalkyl moiety having at most 6 carbon atoms as an alcohol, an alkane monool having at least 18 carbon atoms, and MDI or a polymeric MD, and by treating an article with such a water/oil repellent agent, a sufficient water/oil repellency can be imparted, while placing little burden on the environment. By treating the above-mentioned article with the water/oil repellent composition of the present invention, a high quality water/oil repellency can be imparted to the article.
    Type: Application
    Filed: December 21, 2011
    Publication date: April 12, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Taiki HOSHINO, Naoko Shirota
  • Publication number: 20120065347
    Abstract: The present invention provides novel polymers obtained by polymerizing a compound of formula (1) which has a highly fluorinated norbornane structure.
    Type: Application
    Filed: November 22, 2011
    Publication date: March 15, 2012
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Yasuhisa MATSUKAWA, Daisuke SHIRAKAWA, Eisuke MUROTANI, Naoko SHIROTA, Yoko TAKEBE
  • Patent number: 8134033
    Abstract: To provide a novel polymerizable fluorocompound having a highly fluorinated norbornane structure, and a polymer obtained from the compound. Further, their production processes and a novel intermediate useful for the processes. A novel compound (1) such as a compound (11) or a compound (12), and its polymer. A compound (2) such as a compound (21) or (22), and a compound (3) such as a compound (31) or (32M), which are useful as an intermediate for the production of the compound (1), and its production process. However, each of ZA to ZE represents such as —CH(—OC(O)C(CH3)?CH2)— or —CF2, Each of WA and WB represents such as F, each of YA to YE represents such as —CH(—OH)— or —CF(CH2OH), and each of XA to XE represents such as —C(O)— or —CF2—.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: March 13, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Yasuhisa Matsukawa, Daisuke Shirakawa, Eisuke Murotani, Naoko Shirota, Yoko Takebe
  • Publication number: 20100317808
    Abstract: To provide a novel fluorinated compound, a fluoropolymer and a method for producing the compound. A compound represented by the formula CF2?CFCF2C(X)(C(O)OZ)(CH2)nCR?CHR (wherein X is a hydrogen atom, a cyano group or a group represented by the formula —C(O)OZ, Z is a hydrogen atom or a C1-20 monovalent organic group, n is 0, 1, or 2, and R is a hydrogen atom or a C1-20 monovalent organic group), a method for producing it, and a fluoropolymer obtained by polymerizing the compound.
    Type: Application
    Filed: August 18, 2010
    Publication date: December 16, 2010
    Applicant: Asahi Glass Company, Limited
    Inventors: Koichi MURATA, Naoko SHIROTA, Osamu YOKOKOJI, Yoko TAKEBE
  • Patent number: 7825275
    Abstract: To provide a novel fluorinated compound, a fluoropolymer and a method for producing the compound. A compound represented by the formula CF2?CFCF2C(X)(C(O)OZ)(CH2)nCR?CHR (wherein X is a hydrogen atom, a cyano group or a group represented by the formula —C(O)OZ, Z is a hydrogen atom or a C1-20 monovalent organic group, n is 0, 1, or 2, and R is a hydrogen atom or a C1-20 monovalent organic group), a method for producing it, and a fluoropolymer obtained by polymerizing the compound.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: November 2, 2010
    Assignee: Asahi Glass Company, Limited
    Inventors: Koichi Murata, Naoko Shirota, Osamu Yokokoji, Yoko Takebe
  • Patent number: 7790811
    Abstract: A useful fluoropolymer excellent in transparency and durability to a short wavelength light (an ArF excimer laser having an irradiation wavelength of 193 nm and a F2 excimer laser having an irradiation wavelength of 157 nm) as e.g. a pellicle material, wherein a polymer (I) to be used for a pellicle membrane and/or an adhesive is a polymer essentially containing the following fluorine atom-containing unit (1), wherein a chain forming the polymer main chain comprises a carbon atom and an etheric oxygen atom, at least one carbon atom forming the main chain is a carbon atom forming a cyclic group, and at least one etheric oxygen atom forming the main chain is an oxygen atom forming no cyclic group.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: September 7, 2010
    Assignee: Asahi Glass Company, Limited
    Inventors: Ikuo Matsukura, Hiromasa Yamamoto, Yuichiro Ishibashi, Shinji Okada, Naoko Shirota