Patents by Inventor Takashi Okazoe
Takashi Okazoe 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).
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Patent number: 12060312Abstract: The objective of the present invention is to provide a method for producing an isocyanate compound safely and efficiently. The method for producing an isocyanate compound according to the present invention is characterized in comprising the steps of irradiating a high energy light to a halogenated methane at a temperature of 15° C. or lower in the presence of oxygen, and further adding a primary amine compound to be reacted without irradiating a high energy light.Type: GrantFiled: November 14, 2019Date of Patent: August 13, 2024Assignees: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY, AGC INC.Inventors: Akihiko Tsuda, Takashi Okazoe
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Patent number: 9796655Abstract: The present invention relates to a production process capable of selectively producing various kinds of carbonate compounds without restraint in high yields without using toxic compounds such as phosgene and crown ethers, without producing corrosive gases such as hydrogen chloride as a by-product, and without necessity of removing the chloroform as a by-product by distillation, and to a method for producing a carbonate compound, containing reacting compound (1) with a compound having an OH group in the presence of a metal salt and 0.2 to 4.0 mol of compound (2) per mol of the metal salt to obtain a carbonate compound, in which m is an integer of 1-10, Q is an alkylene group having 1 to 4 carbon atoms, etc, and R10 and R11 are alkyl groups having 1 to 5 carbon atoms, etc.Type: GrantFiled: June 4, 2015Date of Patent: October 24, 2017Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Hidekazu Okamoto, Atsushi Fujimori, Takashi Okazoe
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Patent number: 9617379Abstract: 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: GrantFiled: August 11, 2016Date of Patent: April 11, 2017Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Takashi Okazoe, Masayuki Miyazaki, Kazuya Oharu, Tomoyuki Fujita, Shinji Wada, Koichi Murata, Naoko Shirota
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Patent number: 9447235Abstract: 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: GrantFiled: October 15, 2015Date of Patent: September 20, 2016Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Naoko Shirota, Takashi Okazoe, Kimiaki Kashiwagi
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Patent number: 9260383Abstract: The present invention relates to a method of producing a carbamate compound, comprising reacting a fluorine-containing carbonic diester compound represented by formula (1) and a non-aromatic diamine compound represented by formula (2) without using a catalyst, to thereby produce a carbamate compound represented by formula (3), and a method of producing an isocyanate compound represented by formula (20) from the carbamate compound without using a catalyst, wherein R represents a fluorine-containing monovalent aliphatic hydrocarbon group, and A represents a divalent aliphatic hydrocarbon group, a divalent alicyclic hydrocarbon group or a divalent aromatic-aliphatic hydrocarbon group.Type: GrantFiled: November 26, 2014Date of Patent: February 16, 2016Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Takashi Okazoe, Yuko Nagasaki, Hidekazu Okamoto
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Publication number: 20160032046Abstract: 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: ApplicationFiled: October 15, 2015Publication date: February 4, 2016Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Naoko SHIROTA, Takashi Okazoe, Kimiaki Kashiwagi
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Patent number: 9238612Abstract: The present invention relates to a method for producing an unsaturated acid and/or an unsaturated acid ester, containing a process A of reacting a compound (1) represented by the following formula (1) at a temperature of 0° C. to 350° C. in the presence of a Brønsted acid catalyst and/or a Lewis acid catalyst, to prepare a compound (2) represented by the following formula (2); in which each of R1, R2 and R4 independently represents a hydrogen atom, a deuterium atom or an alkyl group; each of R3 and R5 independently represents a hydrogen atom or a deuterium atom; R6 represents a hydrogen atom, a deuterium atom, or an alkyl group or an aryl group; and X represents a chlorine atom, a fluorine atom, a bromine atom, or an iodine atom.Type: GrantFiled: March 3, 2015Date of Patent: January 19, 2016Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Tomoyuki Fujita, Shinji Wada, Takashi Okazoe, Koichi Murata
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Patent number: 8927756Abstract: The present invention relates to a method of producing a carbamate compound, comprising reacting a fluorine-containing carbonic diester compound represented by formula (1) and a non-aromatic diamine compound represented by formula (2) without using a catalyst, to thereby produce a carbamate compound represented by formula (3), and a method of producing an isocyanate compound represented by formula (20) from the carbamate compound without using a catalyst, wherein R represents a fluorine-containing monovalent aliphatic hydrocarbon group, and A represents a divalent aliphatic hydrocarbon group, a divalent alicyclic hydrocarbon group or a divalent aromatic-aliphatic hydrocarbon group.Type: GrantFiled: September 28, 2012Date of Patent: January 6, 2015Assignee: Asahi Glass Company, LimitedInventors: Takashi Okazoe, Yuko Nagasaki, Hidekazu Okamoto
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Patent number: 8703899Abstract: The present invention relates to a method for producing a polyester, containing conducting a transesterification reaction of at least one compound selected from compounds represented by the following formulae (1) to (3) with a diol compound in the presence of a catalyst: wherein Ar is a divalent aromatic hydrocarbon group or the like; R1 is CX1Y1R4; R2 is a hydrogen atom or CX2Y2R5; R3 is a hydrogen atom or CX3Y3R6; R7 is a perfluoroalkylene group having 1 to 5 carbon atoms; X1 to X3 are a hydrogen atom, a fluorine atom or Rf; Y1 to Y3 are a fluorine atom or Rf; R4 to R6 are a fluorine atom, Rf, ORf or the like; and Rf is a fluoroalkyl group having 1 to 4 carbon atoms.Type: GrantFiled: August 30, 2013Date of Patent: April 22, 2014Assignee: Asashi Glass Company LimitedInventors: Jumpei Nomura, Hidekazu Okamoto, Atsushi Fujimori, Takashi Okazoe
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Publication number: 20130345387Abstract: The present invention relates to a method for producing a polyester, containing conducting a transesterification reaction of at least one compound selected from compounds represented by the following formulae (1) to (3) with a diol compound in the presence of a catalyst: wherein Ar is a divalent aromatic hydrocarbon group or the like; R1 is CX1Y1R4; R2 is a hydrogen atom or CX2Y2R5; R3 is a hydrogen atom or CX3Y3R6; R7 is a perfluomalkylene group having 1 to 5 carbon atoms; X1 to X3 are a hydrogen atom, a fluorine atom or Rf; Y1 to Y3 are a fluorine atom or Rf; R4 to R6 are a fluorine atom, Rf, ORf or the like; and Rf is a fluoroalkyl group having 1 to 4 carbon atoms.Type: ApplicationFiled: August 30, 2013Publication date: December 26, 2013Applicant: Asahi Glass Company, LimitedInventors: Jumpei Nomura, Hidekazu Okamoto, Atsushi Fujimori, Takashi Okazoe
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Patent number: 8395001Abstract: To provide processes for efficiently and economically producing 2-chloro-1,1,1,2-tetrafluoropropane (R244bb) and 2,3,3,3-tetrafluoropropene (R1234yf) in an industrially practical manner. A process for producing 2-chloro-1,1,1,2-tetrafluoropropane, which comprises a chlorination step of reacting 1,2-dichloro-2-fluoropropane and chlorine in the presence of a solvent under irradiation with light to obtain 1,1,1,2-tetrachloro-2-fluoropropane, and a fluorination step of reacting the 1,1,1,2-tetrachloro-2-fluoropropane obtained in the chlorination step and hydrogen fluoride in the presence of a catalyst to obtain 2-chloro-1,1,1,2-tetrafluoropropane, and a process for producing 2,3,3,3-tetrafluoropropene, which comprises dehydrochlorinating it in the presence of a catalyst.Type: GrantFiled: June 10, 2011Date of Patent: March 12, 2013Assignee: Asahi Glass Company, LimitedInventors: Satoshi Kawaguchi, Takashi Okazoe, Hidekazu Okamoto
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Publication number: 20130023691Abstract: The present invention relates to a method of producing a carbamate compound, comprising reacting a fluorine-containing carbonic diester compound represented by formula (1) and a non-aromatic diamine compound represented by formula (2) without using a catalyst, to thereby produce a carbamate compound represented by formula (3), and a method of producing an isocyanate compound represented by formula (20) from the carbamate compound without using a catalyst, wherein R represents a fluorine-containing monovalent aliphatic hydrocarbon group, and A represents a divalent aliphatic hydrocarbon group, a divalent alicyclic hydrocarbon group or a divalent aromatic-aliphatic hydrocarbon group.Type: ApplicationFiled: September 28, 2012Publication date: January 24, 2013Inventors: Takashi Okazoe, Yuko Nagasaki, Hidekazu Okamoto
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Publication number: 20120148818Abstract: A fluorine-containing copolymer, containing: chlorotrifluoroethylene monomer units (A); and monomer units (B), which are obtained by polymerizing a monomer selected from the group consisting of (i) a monomer having a formula: CH2?CHCOON(R0)2, wherein each R0 is independently a hydrogen or an alkyl group; (ii) N-vinylcaprolactam; (iii) a monomer having a formula: CH2?CR1CH2OCH2CR2?CH2, wherein R1 and R2 are each independently a hydrogen, a fluorine, or a methyl group; (iv) a monomer having a formula: CH2?CHCH2CH(CH3)—R3, wherein R3 is a linear alkyl group comprising 1 to 7 carbons; and (v) a monomer of methyl 2-fluoroacrylate, wherein a ratio, (A)/((A)+(B)), is from 3 to 99 mol %, a fluorine content of the copolymer is from 15 to 75 mol %, and a molecular weight of the copolymer is from 1,000 to 1,000,000.Type: ApplicationFiled: January 31, 2012Publication date: June 14, 2012Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Safir L. ADAM, Song Li, Shinji Okada, Nobuyuki Kasahara, Katsuya Ueno, Yoshitomi Morizawa, Takashi Okazoe
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Publication number: 20100249436Abstract: The present invention is to provide a novel production process capable of selectively producing various kinds of carbonate compounds without any inhibition in high yields without using phosgene and without producing hydrogen chloride as a by-product. The present invention relates to a process for producing a compound having a carbonate bond by reacting a compound (1) with a compound having one OH group or a compound having two or more OH groups in the presence of a halogen salt. In the formula (1) shown below, X1 to X6 each represents a hydrogen atom or a halogen atom, at least one of X1 to X3 is a halogen atom, and at least one of X4 to X6 is a halogen atom.Type: ApplicationFiled: June 2, 2010Publication date: September 30, 2010Inventors: Hidekazu OKAMOTO, Kouhei Tajima, Takashi Okazoe
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Publication number: 20100240912Abstract: The present invention is to provide a production process capable of selectively producing various kinds of fluorine-containing carbonate compounds without any inhibition in high yields without using phosgene and without producing hydrogen chloride as a by-product. The present invention relates to a process for producing a fluorine-containing compound having a carbonate bond by reacting a compound (1) with a fluorine-containing compound having an OH group. In the formula (1) shown below, X1 to X6 each represents a hydrogen atom or a halogen atom, at least one of X1 to X3 is a halogen atom, and at least one of X4 to X6 is a halogen atom.Type: ApplicationFiled: June 2, 2010Publication date: September 23, 2010Inventors: Hidekazu OKAMOTO, Kouhei Tajima, Takashi Okazoe
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Patent number: 7795375Abstract: It is to provide a compound which has a low vapor pressure and low viscosity, which is less problematic in deterioration during its use and which is useful as e.g. a lubricant, a surface modifier or a surfactant. A fluoropolyether compound represented by the formula (X—)xY(—Z)z, wherein X is a group represented by the formula HO—(CH2CH2O)a.(CH2CH(OH)CH2O)b—(CH2)c—CF2O(CF2CF2O)d— (wherein “a” is an integer of from 0 to 100, b is an integer of from 0 to 100, c is an integer of from 1 to 100, and d is an integer of from 1 to 200), Z is a group represented by the formula RFO(CF2CF2O)g— (wherein RF is e.g. a C1-20 perfluoroalkyl group having an etheric oxygen atom inserted between carbon-carbon atoms, and g is an integer of from 3 to 200), Y is e.g. a (x+z) valent perfluorinated saturated hydrocarbon group, x is an integer of at least 2, z is an integer of at least 0, and (x+z) is an integer of from 3 to 20.Type: GrantFiled: July 11, 2006Date of Patent: September 14, 2010Assignee: Asahi Glass Company, LimitedInventors: Daisuke Shirakawa, Kazuya Oharu, Takashi Okazoe
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Patent number: 7781612Abstract: The present invention provides a process for producing a fluorinated sulfonyl fluoride useful as e.g. a material for an ion exchange resin, and a novel chemical substance useful as an intermediate in the production process.Type: GrantFiled: December 28, 2005Date of Patent: August 24, 2010Assignee: Asahi Glass Company, LimitedInventors: Koichi Murata, Takashi Okazoe, Eisuke Murotani
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Patent number: 7709665Abstract: A fluorosulfonyl group-containing compound having a high polymerization reactivity, a process for its production, a sulfonyl group-containing polymerizable monomer led from the sulfonyl group-containing compound, and a polymer obtainable by polymerizing the sulfonyl group-containing polymerizable monomer, are provided. A compound (3) is fluorinated to form a compound (4), and then, the compound (4) is subjected to a decomposition reaction to produce a compound (5). A preferred compound (5-1) of the compound (5) is thermally decomposed to produce a compound (7-1) having a high polymerization reactivity. wherein RA is a bivalent organic group such as a fluoroalkylene group, RAF is a group having RA fluorinated, or the same group as RA, each of RB to RD which are independent of one another, is a hydrogen atom, etc., each of RBF to RDF is a fluorine atom, etc.Type: GrantFiled: July 27, 2007Date of Patent: May 4, 2010Assignee: Asahi Glass Company, LimitedInventors: Takashi Okazoe, Atsushi Watakabe, Masahiro Ito, Kunio Watanabe, Takeshi Eriguchi, Kimiaki Kashiwagi, Shu-zhong Wang
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Patent number: RE41357Abstract: The present invention provides a process whereby fluorine atom-containing sulfonyl fluoride compound(s) useful as e.g. materials for ion-exchange membranes, can be produced efficiently and at low cost without structural limitations while solving the difficulties in production. Namely, the present invention provides a process which comprises reacting XSO2RA-E1 (1) with RB-E2 (2) to form XSO2RA-E-RB (3), then reacting (3) with fluorine in a liquid phase to form FSO2RAF-EF-RBF (4), and further, decomposing the compound to obtain FSO2RAF-EF1 (5), wherein RA is a bivalent organic group, E1 is a monovalent reactive group, RB is a monovalent organic group, E2 is a monovalent reactive group which is reactive with E1, E is a bivalent connecting group formed by the reaction of E1 with E2, RAF is a bivalent organic group formed by the fluorination of RA, etc., RBF is the same group as RB, etc., EF is a bivalent connecting group formed by the fluorination of E, etc.Type: GrantFiled: September 19, 2008Date of Patent: May 25, 2010Assignee: Asahi Glass Company, LimitedInventors: Masahiro Ito, Kunio Watanabe, Takashi Okazoe, Isamu Kaneko, Daisuke Shirakawa
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Patent number: RE41806Abstract: The present invention provides a process whereby fluorine atom-containing sulfonyl fluoride compound(s) useful as e.g. materials for ion-exchange membranes, can be produced efficiently and at low cost without structural limitations while solving the difficulties in production. Namely, the present invention provides a process which comprises reacting XSO2RA-E1 (1) with RB-E2 (2) to form XSO2R4-E-RB (3), then reacting (3) with fluorine in a liquid phase to form FSO2RAF-EF-RBF (4), and further, decomposing the compound to obtain FSO2RAF-EFl (5), wherein RA is a bivalent organic group, E1 is a monovalent reactive group, RB is a monovalent organic group, E2 is a monovalent reactive group which is reactive with E1, E is a bivalent connecting group formed by the reaction of E1 with E2, RAF is a bivalent organic group formed by the fluorination of RA, etc., RBF is the same group as RB, etc., EF1 is a bivalent connecting group formed by the fluorination of E, etc.Type: GrantFiled: June 19, 2007Date of Patent: October 5, 2010Assignee: Asahi Glass Company, LimitedInventors: Masahiro Ito, Kunio Watanabe, Takashi Okazoe, Isamu Kaneko, Daisuke Shirakawa