Patents by Inventor Kazuo Yamato
Kazuo Yamato 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: 10392334Abstract: A method and a system for inexpensively producing a corresponding target ketone and/or alcohol by decomposing hydroperoxide rapidly and with high selectivity using an aqueous alkaline solution and by recovering and recycling alkali. The method includes neutralizing at least a part of a carboxylic acid in the oxidation reaction solution by contacting the oxidation reaction solution with a first alkaline solution including a carbonate of an alkali metal, and separating the reaction mixture into a first oil phase and a first water phase; decomposing the hydroperoxide and the ester compound in the first oil phase by contacting the first oil phase with a second alkaline solution having a higher pH value than the first alkaline solution, and separating the reaction mixture into a second oil phase and a second water phase; and recovering the carbonate of an alkali metal from the first water phase and recycling the carbonate of an alkali metal to the first alkaline solution.Type: GrantFiled: December 6, 2016Date of Patent: August 27, 2019Assignee: UBE INDUSTRIES, LTD.Inventors: Yoshinori Sugimura, Kazunori Kurosawa, Kazuo Yamato, Junichi Kugimoto, Joji Kawai, Wanna Sirisuksukon, Nantariya Ngamsup
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Publication number: 20180346399Abstract: A method and a system for inexpensively producing a corresponding target ketone and/or alcohol by decomposing hydroperoxide rapidly and with high selectivity using an aqueous alkaline solution and by recovering and recycling alkali. The method includes neutralizing at least a part of a carboxylic acid in the oxidation reaction solution by contacting the oxidation reaction solution with a first alkaline solution including a carbonate of an alkali metal, and separating the reaction mixture into a first oil phase and a first water phase; decomposing the hydroperoxide and the ester compound in the first oil phase by contacting the first oil phase with a second alkaline solution having a higher pH value than the first alkaline solution, and separating the reaction mixture into a second oil phase and a second water phase; and recovering the carbonate of an alkali metal from the first water phase and recycling the carbonate of an alkali metal to the first alkaline solution.Type: ApplicationFiled: December 6, 2016Publication date: December 6, 2018Inventors: Yoshinori SUGIMURA, Kazunori KUROSAWA, Kazuo YAMATO, Junichi KUGIMOTO, Joji KAWAI, Wanna SIRISUKSUKON, Nantariya NGAMSUP
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Patent number: 10099985Abstract: This invention provides producing having an objective ketone and/or alcohol by decomposing of a hydrocarbon compound rapidly and selectively having a same number of carbon atoms as a hydrocarbon compound by decomposing a hydroperoxide in a reaction solution obtained from oxidizing the hydrocarbon compound using molecular oxygen of this invention involves, a hydroperoxide decomposition step for decomposing the hydroperoxide into the ketone and/or alcohol by contacting the reaction solution with an aqueous solution containing a carbonate of an alkaline earth metal or a carbonate of an alkali metal and a transition metal compound, a separation step for separating into an oil phase comprising the ketone and/or alcohol, and a water phase comprising the carbonate of an alkaline earth metal or carbonate of an alkali metal and the transition metal compound, a recovery step for recovering the carbonate of an alkali metal or carbonate of an alkaline earth metal and the transition metal compound by combusting the waterType: GrantFiled: October 5, 2015Date of Patent: October 16, 2018Assignee: UBE INDUSTRIES, LTD.Inventors: Kazunori Kurosawa, Yoshinori Sugimura, Hideo Shimomura, Kazuo Yamato, Joji Funatsu, Naoya Katagiri, Junichi Kugimoto, Joji Kawai
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Publication number: 20170313641Abstract: This invention provides producing having an objective ketone and/or alcohol by decomposing of a hydrocarbon compound rapidly and selectively having a same number of carbon atoms as a hydrocarbon compound by decomposing a hydroperoxide in a reaction solution obtained from oxidizing the hydrocarbon compound using molecular oxygen of this invention involves, a hydroperoxide decomposition step for decomposing the hydroperoxide into the ketone and/or alcohol by contacting the reaction solution with an aqueous solution containing a carbonate of an alkaline earth metal or a carbonate of an alkali metal and a transition metal compound, a separation step for separating into an oil phase comprising the ketone and/or alcohol, and a water phase comprising the carbonate of an alkaline earth metal or carbonate of an alkali metal and the transition metal compound, a recovery step for recovering the carbonate of an alkali metal or carbonate of an alkaline earth metal and the transition metal compound by combusting the waterType: ApplicationFiled: October 5, 2015Publication date: November 2, 2017Applicant: Ube Industries, Ltd.Inventors: Kazunori Kurosawa, Yoshinori Sugimura, Hideo Shimomura, Kazuo Yamato, Joji Funatsu, Naoya Katagiri, Junichi Kugimoto, Joji Kawai
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Patent number: 8962826Abstract: A method for producing a high purity, high quality amide compound, particularly a lactam. An amount of each of a halide, an aldehyde compound, an alcohol compound and a nitrile compound contained in a solution recycled into an oxime-forming step is controlled to an amount of 0.4 mol% or less based on the ketone as a starting material. One or more of a ketone, an oxime and an amide compound are purified by hydrogenation and/or crystallization for eliminating impurities containing a double bond. A content of impurities having a cyclic bridge structure is controlled using a cycloalkanone purified by recrystallization.Type: GrantFiled: December 27, 2013Date of Patent: February 24, 2015Assignee: Ube Industries, Ltd.Inventors: Junichi Kugimoto, Joji Kawai, Kazuo Yamato, Masahide Okada, Tsunemi Sugimoto, Hiroshi Matsumoto
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Publication number: 20140114061Abstract: A method for producing a high purity, high quality amide compound, particularly a lactam. An amount of each of a halide, an aldehyde compound, an alcohol compound and a nitrile compound contained in a solution recycled into an oxime-forming step is controlled to an amount of 0.4 mol % or less based on the ketone as a starting material. One or more of a ketone, an oxime and an amide compound are purified by hydrogenation and/or crystallization for eliminating impurities containing a double bond. A content of impurities having a cyclic bridge structure is controlled using a cycloalkanone purified by recrystallization.Type: ApplicationFiled: December 27, 2013Publication date: April 24, 2014Applicant: Ube Industries, Ltd.Inventors: Junichi Kugimoto, Joji Kawai, Kazuo Yamato, Masahide Okada, Tsunemi Sugimoto, Hiroshi Matsumoto
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Publication number: 20140114062Abstract: A method for producing a high purity, high quality amide compound, particularly a lactam. An amount of each of a halide, an aldehyde compound, an alcohol compound and a nitrile compound contained in a solution recycled into an oxime-forming step is controlled to an amount of 0.4 mol % or less based on the ketone as a starting material. One or more of a ketone, an oxime and an amide compound are purified by hydrogenation and/or crystallization for eliminating impurities containing a double bond. A content of impurities having a cyclic bridge structure is controlled using a cycloalkanone purified by recrystallization.Type: ApplicationFiled: December 27, 2013Publication date: April 24, 2014Applicant: Ube Industries, Ltd.Inventors: Junichi Kugimoto, Joji Kawai, Kazuo Yamato, Masahide Okada, Tsunemi Sugimoto, Hiroshi Matsumoto
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Publication number: 20130005960Abstract: The present invention relates to a method for producing a high purity, high quality amide compound, particularly, lactam. A first embodiment of the present invention is characterized in that an amount of each of a halide, an aldehyde compound, an alcohol compound and a nitrile compound contained in a solution recycled into an oxime-forming step is controlled to an amount of 0.4 mol % or less based on the ketone as a starting material. A second embodiment of the present invention is characterized in that one or more compounds selected from the group consisting of a ketone, an oxime and an amide compound are purified by hydrogenation and/or crystallization for eliminating impurities containing a double bond. A third embodiment of the present invention is characterized in that a content of impurities having a cyclic bridge structure is controlled by using a cycloalkanone purified by recrystallization.Type: ApplicationFiled: March 15, 2011Publication date: January 3, 2013Applicant: UBE INDUSTRIES, LTD.Inventors: Junichi Kugimoto, Joji Kawai, Kazuo Yamato, Masahide Okada, Tsunemi Sugimoto, Hiroshi Matsumoto