Daikin Industries, Ltd.

Kyoto University

Fumihiko Yamaguchi

Masayuki Yamana

Satoshi Ide

Yoshitaka Honda

Katsuki Fujiwara

Satoshi Ishida

Eiji Seki

Tatsuya Otsuka

Ikuo Yamamoto

Masahiro Noguchi

Tatsumi Tsuchiya

Yukio Omure

Osamu Yamamoto

Tatsuya Takakuwa

Tatsuya Morikawa

Satoshi Tokuno

Susumu Kitagawa

Masakazu Higuchi

Yuuta Hasumoto

Mana Shimokawa

Kei Kuramoto

Hirokazu Aoyama

Yasufu Yamada

Hiroshi Kashiwagi

Yukio Ohmure

Satoshi Hishida

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.

Method for producing reaction gas containing (E)-1,2-difluoroethylene

The method according to this disclosure is a method for separating an unsaturated hydrocarbon having 2 or 3 carbon atoms and a halogenated unsaturated carbon compound formed by replacing at least one of hydrogen atoms included in the unsaturated hydrocarbon with a fluorine atom, from each other and is a method for selectively adsorbing either the unsaturated hydrocarbon or the halogenated unsaturated carbon compound by a porous coordination polymer that includes a metallic ion having a valence of 2 to 4 and an aromatic anion having 1 to 6 aromatic ring(s).

Separation method for halogenated unsaturated carbon compound

The present invention provides a refrigerant composition that is nonflammable, and ensures low LCCP and less burden on the environment. More specifically, the present invention relates a refrigerant composition containing difluoromethane (HFC32), pentafluoroethane (HFC125), and 2,3,3,3-tetrafluoropropene (HFO1234yf), the ratio of HFC32/HFC125/HFO1234yf being in a range surrounded by points (0/21/79 mass %), (16.6/25.3/58.1 mass %), and (0/28.4/71.6 mass %) in a ternary diagram of a refrigerant composition containing HFC32, HFC125, and HFO1234yf, and the composition essentially containing HFC32.

Refrigerant composition comprising difluoromethane (HFC32), pentafluoroethane (HFC125) and 2, 3, 3, 3-tetrafluoropropene (HFO1234yf)

Refrigerator and difluoromethane/Pentafluoroethane/1,1,1,2-tetrafluoroethane working fluid

Refrigerant

Fluorinated hydrocarbon compound and process for its preparation, and

The present invention provides an oil for a refrigerating machine using a hydrogen-containing halogenated hydrocarbon as a refrigerant, the oil comprising a fluorine-containing polyether having repeated units represented by the formula

Refrigerating machine composition comprising a fluorine-containing

Working fluids

Growing community of inventors

Osaka, Japan

Katsuki Fujiwara