公开(公告)号：US20210130268A1

公开(公告)日：2021-05-06

申请号：US17149003

申请日：2021-01-14

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tatsuya TAKAKUWA ,  Osamu YAMAMOTO ,  Katsuki FUJIWARA ,  Kei KURAMOTO ,  Yuuta HASUMOTO

IPC: C07C17/278 ,  C09K5/04

Abstract: 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.

公开(公告)号：US20230391696A1

公开(公告)日：2023-12-07

申请号：US18209652

申请日：2023-06-14

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tatsuya TAKAKUWA ,  Tomo OTSUKA ,  Atsushi NOGUCHI ,  Yuuta HASUMOTO

IPC: C07C17/281

CPC classification number: C07C17/281

Abstract: The present disclosure provides a method for producing a reaction gas containing 1,1,2-trifluoroethane (R-143) and/or (E,Z)-1,2-difluoroethylene (R-1132(E,Z)) using a starting material that is easier to obtain than those used in conventional methods. Specifically, the present disclosure provides a method for producing a reaction gas containing 1,1,2-trifluoroethane (R-143) and/or (E,Z)-1,2-difluoroethylene (R-1132(E,Z)), the method comprising subjecting a starting material gas containing difluoromethane (R-32) to a reaction that involves thermal decomposition at a pressure of 0.6 MPaG or more and 2.0 MPaG or less and a temperature of 600° C. or more and 1000° C. or less, thereby obtaining the reaction gas.

公开(公告)号：US20210107850A1

公开(公告)日：2021-04-15

申请号：US17130421

申请日：2020-12-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tatsuya TAKAKUWA ,  Osamu YAMAMOTO ,  Katsuki FUJIWARA ,  Kei KURAMOTO ,  Yuuta HASUMOTO

IPC: C07C17/278 ,  C09K5/04

Abstract: 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.

公开(公告)号：US20230027989A1

公开(公告)日：2023-01-26

申请号：US17956122

申请日：2022-09-29

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tatsuya TAKAKUWA ,  Atsushi NOGUCHI ,  Yuuta HASUMOTO ,  Satoru YOSHIZAKI ,  Hiroyuki MURATA ,  Tsuneyoshi IWASAKI

IPC: G16C20/10 ,  G06N3/12 ,  G06N7/00

Abstract: This disclosure relates to an analysis method for analyzing a chemical reaction from one or more starting materials, comprising a preparation step S1 of preparing a reaction network diagram indicating the one or more starting materials, at least part of one or more intermediate products and one or more final products generated from the chemical reaction, and reaction pathways of the chemical reaction, and a prediction step S2 of predicting the reaction rate in each reaction pathway using an artificial intelligence algorithm.

公开(公告)号：US20230014347A1

公开(公告)日：2023-01-19

申请号：US17895529

申请日：2022-08-25

Applicant: DAIKIN INDUSTRIES, LTD. ,  OSAKA UNIVERSITY

Inventor： Yuuta HASUMOTO ,  Tatsuya TAKAKUWA ,  Osamu YAMAMOTO ,  Hideki NAKAYA ,  Masao NOUMI ,  Kazuyuki SATOU ,  Kohei YAMANOI ,  Akihiro OSHIMA

IPC: C07C17/278

Abstract: 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.