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公开(公告)号：US20230014347A1
公开(公告)日：2023-01-19
申请号：US17895529
申请日：2022-08-25
发明人： Yuuta HASUMOTO , Tatsuya TAKAKUWA , Osamu YAMAMOTO , Hideki NAKAYA , Masao NOUMI , Kazuyuki SATOU , Kohei YAMANOI , Akihiro OSHIMA
IPC分类号： C07C17/278
摘要： This disclosure provides a method for producing a hydrofluoroolefin (HFO) or fluoroolefin (FO), which is a target compound, with high selectivity, without requiring a high temperature and a catalyst in a synthesis process of the target compound. Specifically, the present disclosure provides a method for producing a hydrofluoroolefin or fluoroolefin having two, three, or four carbon atoms, comprising irradiating at least one starting material compound selected from the group consisting of hydrofluorocarbons having one or two carbon atoms and hydrofluoroolefin As having two or three carbon atoms with ionizing radiation and/or an ultraviolet ray having a wavelength of 300 nm or less, with the proviso that when the at least one starting material compound is the hydrofluoroolefin A, the resulting hydrofluoroolefin is different from the hydrofluoroolefin A.
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公开(公告)号：US20210403399A1
公开(公告)日：2021-12-30
申请号：US17473330
申请日：2021-09-13
发明人： Tatsuya TAKAKUWA , Osamu YAMAMOTO , Daisuke KARUBE
IPC分类号： C07C17/358 , C07C17/383
摘要： Provided is a method for obtaining HFO-1132(E) and/or HFO-1132(Z) efficiently. The method is a method for producing HFO-1132(E) and/or HFO-1132(Z), comprising supplying a composition containing HFO-1132(E) and/or HFO-1132(Z) to a reactor, and performing an isomerization reaction between HFO-1132(E) and HFO-1132(Z).
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公开(公告)号：US20220089512A1
公开(公告)日：2022-03-24
申请号：US17544053
申请日：2021-12-07
发明人： Kazuhiro TAKAHASHI , Osamu YAMAMOTO
IPC分类号： C07C17/358 , C07C17/383
摘要： Provided is a method for efficiently obtaining HFC-1132(E) and/or HFO-1132(Z). The method includes supplying a composition containing HFO-1132(E) and/or HFO-1132(Z) to a reactor to perform isomerization between HFO-1132(E) and HFO-1132(Z) by irradiating the composition with light.
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公开(公告)号：US20210107850A1
公开(公告)日：2021-04-15
申请号：US17130421
申请日：2020-12-22
IPC分类号： C07C17/278 , C09K5/04
摘要： The present disclosure provides a method for producing a reaction gas containing R-1132(E) with selectivity higher than that of known methods. Specifically, the present disclosure provides a method for producing a reaction gas containing (E)-1,2-difluoroethylene (R-1132(E)), (1) the method comprising a step of subjecting a starting material gas containing one or more fluoromethanes selected from the group consisting of chlorodifluoromethane (R-22), difluoromethane (R-32), and fluoromethane (R-41) to a reaction that involves thermal decomposition to obtain the reaction gas, and (2) the starting material gas having a water vapor content of 1 volume % or less.
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公开(公告)号：US20210130268A1
公开(公告)日：2021-05-06
申请号：US17149003
申请日：2021-01-14
IPC分类号： C07C17/278 , C09K5/04
摘要： The present disclosure provides a method for producing a reaction gas containing R-1132(E) with selectivity higher than that of known methods. Specifically, the present disclosure provides a method for producing a reaction gas containing (E)-1,2-difluoroethylene (R-1132(E)), (1) the method comprising a step of subjecting a starting material gas containing one or more fluoromethanes selected from the group consisting of chlorodifluoromethane (R-22), difluoromethane (R-32), and fluoromethane (R-41) to a reaction that involves thermal decomposition to obtain the reaction gas, and (2) the starting material gas having a water vapor content of 1 volume % or less.
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