Patents by Inventor Shoji Furuta
Shoji Furuta 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: 10934235Abstract: The method of purifying 1224yd (Z) includes: distilling a composition comprising 1224yd (Z) and 244bb in a presence of an extracting solvent comprising at least one compound selected from the group consisting of an alcohol, an ether, a nitrile, a ketone, a carbonate ester, an amide, an ester, a sulfoxide, a hydrocarbon, a chlorohydrocarbon, and a fluorohydrocarbon; and thereby, separating at least a part of 244bb from the composition.Type: GrantFiled: May 15, 2020Date of Patent: March 2, 2021Assignee: AGC INC.Inventors: Hidefumi Shiota, Shoji Furuta
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Publication number: 20200277245Abstract: The method of purifying 1224yd (Z) includes: distilling a composition comprising 1224yd (Z) and 244bb in a presence of an extracting solvent comprising at least one compound selected from the group consisting of an alcohol, an ether, a nitrile, a ketone, a carbonate ester, an amide, an ester, a sulfoxide, a hydrocarbon, a chlorohydrocarbon, and a fluorohydrocarbon; and thereby, separating at least a part of 244bb from the composition.Type: ApplicationFiled: May 15, 2020Publication date: September 3, 2020Applicant: AGC INC.Inventors: Hidefumi SHIOTA, Shoji FURUTA
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Patent number: 10399915Abstract: There is provided an economically advantageous manufacturing method capable of efficiently obtaining 1-chloro-2,3,3,3-tetrafluoropropene by using 1,2-dichloro-2,3,3,3-tetrafluoropropane as a raw material. A manufacturing method of 1-chloro-2,3,3,3-tetrafluoropropene is characterized in that it includes subjecting 1,2-dichloro-2,3,3,3-tetrafluoropropane to a dehydrochlorination reaction in a liquid phase in a presence of a base.Type: GrantFiled: June 20, 2018Date of Patent: September 3, 2019Assignee: AGC Inc.Inventors: Tomoaki Taniguchi, Shoji Furuta, Hidefumi Shiota
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Publication number: 20180297918Abstract: There is provided an economically advantageous manufacturing method capable of efficiently obtaining 1-chloro-2,3,3,3-tetrafluoropropene by using 1,2-dichloro-2,3,3,3-tetrafluoropropane as a raw material. A manufacturing method of 1-chloro-2,3,3,3-tetrafluoropropene is characterized in that it includes subjecting 1,2-dichloro-2,3,3,3-tetrafluoropropane to a dehydrochlorination reaction in a liquid phase in a presence of a base.Type: ApplicationFiled: June 20, 2018Publication date: October 18, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Tomoaki Taniguchi, Shoji Furuta, Hidefumi Shiota
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Patent number: 10081749Abstract: A composition is provided containing HFO-1123 having a low GWP, which is useful as a heat transfer composition, an aerosol sprayer, a foaming agent, a blowing agent, a solvent or the like. A composition containing HFO-1123, and at least one first compound selected from the group consisting of HFO-1132, HFO-1132a, CFO-1113, HCFO-1122, HCFO-1122a, HFC-143 and methane.Type: GrantFiled: September 11, 2015Date of Patent: September 25, 2018Assignee: AGC Inc.Inventors: Tomoaki Taniguchi, Hidekazu Okamoto, Shoji Furuta, Yu Takeuchi
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Patent number: 9834633Abstract: To provide a liquid repellent composition which is excellent in liquid repellency and durability and an article having a liquid repelling film. A liquid repellent composition comprising a copolymer (I) and a copolymer (II), characterized in that the copolymer (I) containing from 65 to 95 mass % of a polymerized unit (a) (referred to as “[a1]”) and from 1 to 30 mass % of a polymerized unit (b); and the copolymer (II) containing from 25 to 80 mass % of a polymerized unit (a) (referred to as “[a2]”) and from 1 to 50 mass % of a polymerized unit (c) are contained in an amount of the copolymer (I)/the copolymer (II)=10/90 to 95/5 (mass ratio), and [a1]?[a2]?10 (mass %).Type: GrantFiled: September 18, 2008Date of Patent: December 5, 2017Assignee: Asahi Glass Company, LimitedInventors: Shoji Furuta, Minako Shimada, Kyouichi Kaneko, Kazunori Sugiyama
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Patent number: 9676688Abstract: To provide a method for obtaining 1,1-dichloro-3,3,3-trifluoropropane by reacting 1,1-difluoroethylene with dichlorofluoromethane, which suppresses the production of chloroform as a by-product and achieves a product having a high R-243fa concentration. This method is characterized by obtaining 1,1-dichloro-3,3,3-trifluoropropane by reacting 1,1-difluoroethylene with dichlorofluoromethane in the presence of trifluoromethane.Type: GrantFiled: December 6, 2016Date of Patent: June 13, 2017Assignee: Asahi Glass Company, LimitedInventors: Yu Takeuchi, Shoji Furuta
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Publication number: 20170081264Abstract: To provide a method for obtaining 1,1-dichloro-3,3,3-trifluoropropane by reacting 1,1-difluoroethylene with dichlorofluoromethane, which suppresses the production of chloroform as a by-product and achieves a product having a high R-243fa concentration. This method is characterized by obtaining 1,1-dichloro-3,3,3-trifluoropropane by reacting 1,1-difluoroethylene with dichlorofluoromethane in the presence of trifluoromethane.Type: ApplicationFiled: December 6, 2016Publication date: March 23, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: YU TAKEUCHI, SHOJI FURUTA
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Patent number: 9315432Abstract: To provide an economically advantageous process for producing HFO-1234yf useful as a new refrigerant in sufficiently high yield by one reaction involving thermal decomposition. A process for producing HFO-1234yf and VdF from raw material containing R22, R40 and TFE, by a synthetic reaction involving thermal decomposition, which comprises (a) a step of supplying the R22, the R40 and the TFE to a reactor, as preliminarily mixed or separately, (b) a step of supplying a heat medium to the reactor, and (c) a step of bringing the heat medium in contact with the R22, the R40 and the TFE in the reactor to form the HFO-1234yf and the VdF.Type: GrantFiled: September 15, 2014Date of Patent: April 19, 2016Assignee: Asahi Glass Company, LimitedInventors: Shoji Furuta, Yu Takeuchi
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Patent number: 9302964Abstract: To provide a method for efficiently separating 2,3,3,3-tetrafluoropropene (HFO-1234yf) and chloromethane (R40) from a composition containing HFO-1234yf and R40. A method for separating HFO-1234yf containing substantially no R40, which comprises bringing an azeotropic composition or azeotrope-like composition of H FO-1234yf and R40 into contact with a specific extraction solvent.Type: GrantFiled: June 25, 2015Date of Patent: April 5, 2016Assignee: Asahi Glass Company, LimitedInventors: Shoji Furuta, Tetsuo Otsuka
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Publication number: 20160002518Abstract: To provide a composition containing HFO-1123 having a low GWP, useful as a heat transfer composition, an aerosol sprayer, a foaming agent, a blowing agent, a solvent or the like. A composition containing HFO-1123, and at least one first compound selected from the group consisting of HFO-1132, HFO-1132a, CFO-1113, HCFO-1122, HCFO-1122a, HFC-143 and methane.Type: ApplicationFiled: September 11, 2015Publication date: January 7, 2016Applicant: Asahi Glass Company, LimitedInventors: Tomoaki TANIGUCHI, Hidekazu OKAMOTO, Shoji FURUTA, Yu TAKEUCHI
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Patent number: 9206096Abstract: To provide an economically advantageous process for producing industrially useful HFO-1234yf efficiently and in a sufficiently controlled state by one reaction involving thermal decomposition, by using readily available raw material. A process for producing 2,3,3,3-tetrafluoropropene from a raw material composition containing chlorodifluoromethane and chloromethane, by a synthetic reaction involving thermal decomposition, which comprises (a) a step of supplying the chlorodifluoromethane and the chloromethane to a reactor, as preliminarily mixed or separately, in such amounts that the chloromethane would be in a ratio of from 0.01 to 3 mol to 1 mol of the chlorodifluoromethane, (b) a step of supplying a heat medium to the reactor, and (c) a step of bringing the heat medium in contact with the chlorodifluoromethane and the chloromethane in the reactor to form the 2,3,3,3-tetrafluoropropene.Type: GrantFiled: September 15, 2014Date of Patent: December 8, 2015Assignee: Asahi Glass Company, LimitedInventors: Shoji Furuta, Yu Takeuchi
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Publication number: 20150291490Abstract: To provide a method for efficiently separating 2,3,3,3-tetrafluoropropene (HFO-1234yf) and chloromethane (R40) from a composition containing HFO-1234yf and R40. A method for separating HFO-1234yf containing substantially no R40, which comprises bringing an azeotropic composition or azeotrope-like composition of HFO-1234yf and R40 into contact with a specific extraction solvent.Type: ApplicationFiled: June 25, 2015Publication date: October 15, 2015Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shoji FURUTA, Tetsuo OTSUKA
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Patent number: 9023233Abstract: To provide a method for efficiently separating 2,3,3,3-tetrafluoropropene (HFO-1234yf) and chloromethane (R40) from a composition comprising HFO-1234yf and R40. An azeotrope-like composition comprising from 58 to 78 mol % of HFO-1234yf and from 22 to 42 mol % of R40, and a method for producing HFO-1234yf, which comprises steps of distilling an initial mixture containing HFO-1234yf in a content exceeding 63 mol % in the total amount of HFO-1234yf and R40, thereby to separate the initial mixture into a first fraction in which the content of HFO-1234yf in the total amount of HFO-1234yf and R40 is lower than the content of HFO-1234yf in the total amount of HFO-1234yf and R40 in the initial mixture, and a second fraction in which the content of HFO-1234yf in the total amount of HFO-1234yf and R40 is higher than the content of HFO-1234yf in the total amount of HFO-1234yf and R40 in the initial mixture, and then obtaining HFO-1234yf having a reduced R40 concentration, from the second fraction.Type: GrantFiled: September 26, 2014Date of Patent: May 5, 2015Assignee: Asahi Glass Company, LimitedInventors: Shoji Furuta, Tetsuo Otsuka
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Patent number: 8957264Abstract: A process for producing a fluoroalkyl iodide as a telomer Rf(CF2CF2)nI (wherein Rf is a C1-10 fluoroalkyl group, and n is an integer of from 1 to 6) by telomerization from a fluoroalkyl iodide represented by the formula RfI (wherein Rf is as defined above) as a telogen and tetrafluoroethylene (CF2CF2) as a taxogen, which comprises a liquid phase telomerization step of supplying a homogeneous liquid mixture of the telogen and the taxogen from the lower portion of a tubular reactor, moving the mixture from the lower portion towards the upper portion of the reactor in the presence of a radical initiator over a retention time of at least 5 minutes while the reaction system is kept in a liquid phase state under conditions where no gas-liquid separation will take place, so that the taxogen supplied to the reactor is substantially consumed by the reaction in the reactor, and drawing the reaction product from the upper portion of the reactor.Type: GrantFiled: December 11, 2013Date of Patent: February 17, 2015Assignee: Asahi Glass Company, LimitedInventors: Shoji Furuta, Yusuke Sugahara, Keiko Nakase, Keisuke Mori
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Publication number: 20150008357Abstract: To provide a method for efficiently separating 2,3,3,3-tetrafluoropropene (HFO-1234yf) and chloromethane (R40) from a composition comprising HFO-1234yf and R40. An azeotrope-like composition comprising from 58 to 78 mol % of HFO-1234yf and from 22 to 42 mol % of R40, and a method for producing HFO-1234yf, which comprises steps of distilling an initial mixture containing HFO-1234yf in a content exceeding 63 mol % in the total amount of HFO-1234yf and R40, thereby to separate the initial mixture into a first fraction in which the content of HFO-1234yf in the total amount of HFO-1234yf and R40 is lower than the content of HFO-1234yf in the total amount of HFO-1234yf and R40 in the initial mixture, and a second fraction in which the content of HFO-1234yf in the total amount of HFO-1234yf and R40 is higher than the content of HFO-1234yf in the total amount of HFO-1234yf and R40 in the initial mixture, and then obtaining HFO-1234yf having a reduced R40 concentration, from the second fraction.Type: ApplicationFiled: September 26, 2014Publication date: January 8, 2015Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shoji Furuta, Tetsuo Otsuka
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Publication number: 20150005538Abstract: To provide an economically advantageous process for producing HFO-1234yf useful as a new refrigerant in sufficiently high yield by one reaction involving thermal decomposition. A process for producing HFO-1234yf and VdF from raw material containing R22, R40 and TFE, by a synthetic reaction involving thermal decomposition, which comprises (a) a step of supplying the R22, the R40 and the TFE to a reactor, as preliminarily mixed or separately, (b) a step of supplying a heat medium to the reactor, and (c) a step of bringing the heat medium in contact with the R22, the R40 and the TFE in the reactor to form the HFO-1234yf and the VdF.Type: ApplicationFiled: September 15, 2014Publication date: January 1, 2015Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shoji FURUTA, Yu TAKEUCHI
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Publication number: 20150005537Abstract: To provide an economically advantageous process for producing industrially useful HFO-1234yf efficiently and in a sufficiently controlled state by one reaction involving thermal decomposition, by using readily available raw material. A process for producing 2,3,3,3-tetrafluoropropene from a raw material composition containing chlorodifluoromethane and chloromethane, by a synthetic reaction involving thermal decomposition, which comprises (a) a step of supplying the chlorodifluoromethane and the chloromethane to a reactor, as preliminarily mixed or separately, in such amounts that the chloromethane would be in a ratio of from 0.01 to 3 mol to 1 mol of the chlorodifluoromethane, (b) a step of supplying a heat medium to the reactor, and (c) a step of bringing the heat medium in contact with the chlorodifluoromethane and the chloromethane in the reactor to form the 2,3,3,3-tetrafluoropropene.Type: ApplicationFiled: September 15, 2014Publication date: January 1, 2015Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shoji FURUTA, Yu Takeuchi
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Patent number: 8791310Abstract: To provide a process for producing a fluoroalkyl iodide, whereby the selectivity for a fluoroalkyl iodide having a desired degree of polymerization is high and the productivity is high. A process for producing a fluoroalkyl iodide (2) represented by RfCF2CF2I (wherein Rf is a fluoroalkyl group having at most 4 carbon atoms), which comprises reacting a fluoroalkyl iodide (1) represented by RfI with tetrafluoroethylene in the presence of a radical initiator, wherein a first reaction step of supplying and reacting tetrafluoroethylene and a radical initiator to the fluoroalkyl iodide (1), is followed by repeating (n?1) times (provided that n is an integer of at least 3) a subsequent reaction step of supplying and reacting a radical initiator, or a radical initiator and tetrafluoroethylene, to a reaction mixture (1) formed in the first reaction step.Type: GrantFiled: December 4, 2012Date of Patent: July 29, 2014Assignee: Asahi Glass Company, LimitedInventors: Tetsuo Otsuka, Shoji Furuta
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Patent number: 8759567Abstract: To provide a process for safely producing a perfluoroacyl peroxide with good productivity. By supplying a perfluoroacyl halide-containing organic solvent solution, an aqueous solution of hydrogen peroxide or a metal peroxide, and an aqueous basic alkali metal compound solution to a tubular reactor to allow them to react with one another, in a flow rate ratio of, as represented by molar ratio of the compounds in the solutions, from 1.00 to 1.35 of the basic alkali metal compound and from 0.60 to 40 of hydrogen peroxide or the metal peroxide per 1 of the perfluoroacyl halide, the yield of a perfluoroacyl peroxide based on the material perfluoroacyl halide can be remarkably improved as compared with conventional technique.Type: GrantFiled: September 29, 2011Date of Patent: June 24, 2014Assignee: Asahi Glass Company, LimitedInventors: Katsuya Ueno, Toshiyuki Tanaka, Mayako Takahashi, Kazuhiko Yamada, Fusaaki Takeo, Shoji Furuta