公开(公告)号：US20200247735A1

公开(公告)日：2020-08-06

申请号：US16757501

申请日：2018-10-23

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kazuhiro TAKAHASHI ,  Yuuko OHHIGASHI ,  Junpei IYOTA

IPC: C07C17/386

Abstract: By subjecting a starting material composition containing hexafluorobutadiene and at least one additional compound selected from the group consisting of octafluoro-1-butene, octafluoro-2-butene, heptafluoro-1-butene, and heptafluoro-2-butene to extractive distillation in the presence of an extraction solvent to reduce the concentration of the additional compound, hexafluorobutadiene with higher purity can be obtained.

公开(公告)号：US20230416175A1

公开(公告)日：2023-12-28

申请号：US18243445

申请日：2023-09-07

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kazuhiro TAKAHASHI ,  Takehiro CHAKI ,  Tsubasa NAKAUE ,  Tomoyuki IWAMOTO ,  Megumi KUSHIDA

IPC: C07C17/354

CPC classification number: C07C17/354

Abstract: An object is to provide an efficient method for producing HFC-143 or HFO-1132. Provided as a means for solution is a method for producing 1,1,2-trifluoroethane (HFC-143), comprising subjecting 1,1,2-trifluoroethylene to a reduction reaction with a reducing agent in the presence of a catalyst to obtain HFC-143.

公开(公告)号：US20230097829A1

公开(公告)日：2023-03-30

申请号：US17991204

申请日：2022-11-21

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Eiji KUMAKURA ,  Takuro YAMADA ,  Atsushi YOSHIMI ,  Ikuhiro IWATA ,  Mitsushi ITANO ,  Daisuke KARUBE ,  Yuuki YOTSUMOTO ,  Kazuhiro TAKAHASHI ,  Tatsuya TAKAKUWA ,  Yuzo KOMATSU ,  Shun OHKUBO ,  Keisuke OHTSUKA ,  Yuuichi YANAGI ,  Takeo ABE ,  Yumi TODA ,  Tetsushi TSUDA

IPC: C09K5/04 ,  F25B13/00 ,  F25B29/00 ,  F25B31/00 ,  F25B49/02 ,  F24H4/02 ,  F25B41/00 ,  F24F1/0059 ,  F24F1/24 ,  F24F13/30 ,  F24F1/0067 ,  F24F1/0063 ,  F24F3/052 ,  F25B7/00 ,  F25B39/00 ,  F25B39/02 ,  F24F1/14 ,  F24F1/32 ,  F24F1/34 ,  F24F1/38 ,  F25B9/00 ,  F25B1/00 ,  F25B31/02 ,  F24F5/00 ,  F24F11/88 ,  F25B1/04 ,  F24H1/00 ,  F25B21/00 ,  F25B41/34

Abstract: A refrigeration cycle apparatus (1) is capable of performing a refrigeration cycle using a small-GWP refrigerant. The refrigeration cycle apparatus (1) includes a refrigerant circuit (10) and a refrigerant enclosed in the refrigerant circuit (10). The refrigerant circuit includes a compressor (21), a condenser (23), a decompressing section (24), and an evaporator (31). The refrigerant contains at least 1,2-difluoroethylene.

公开(公告)号：US20220177395A1

公开(公告)日：2022-06-09

申请号：US17677355

申请日：2022-02-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yuuko OHHIGASHI ,  Tatsuya TAKAKUWA ,  Kazuhiro TAKAHASHI

IPC: C07C17/383 ,  C07C19/08 ,  C09K5/04

Abstract: An object of the present invention is to provide a method that can efficiently remove water contained in pentafluoropropane. Provided as a solution is a method comprising distilling a composition comprising pentafluoropropane and water to thereby extract pentafluoropropane with a water content higher than that of the composition as a first stream, and pentafluoropropane with a water content lower than that of the composition as a second stream.

公开(公告)号：US20220089513A1

公开(公告)日：2022-03-24

申请号：US17544109

申请日：2021-12-07

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tomo OTSUKA ,  Tsubasa NAKAUE ,  Kazuhiro TAKAHASHI

IPC: C07C17/358 ,  C07C17/383

Abstract: A method for efficiently obtaining trans-1-halo-2-fluoroethylene (E-isomer) and/or cis-1-halo-2-fluoroethylene (Z-isomer) is provided. The method for producing trans-1-halo-2-fluoroethylene (E-isomer) and/or cis-1-halo-2-fluoroethylene (Z-isomer) includes supplying a composition containing trans-1-halo-2-fluoroethylene (E-isomer) and/or cis-1-halo-2-fluoroethylene (Z-isomer) to a reactor to perform isomerization between the trans-1-halo-2-fluoroethylene (E-isomer) and the cis-1-halo-2-fluoroethylene (Z-isomer) in a liquid phase by performing light irradiation in the presence of a photosensitizer.

公开(公告)号：US20210403778A1

公开(公告)日：2021-12-30

申请号：US17471891

申请日：2021-09-10

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kazuhiro TAKAHASHI

IPC: C09K5/04

Abstract: Provided is a novel composition containing HFC-143. The composition contains HFC-143 and at least one additional compound selected from the group consisting of HFO-1132a, HFO-1123, HFC-143a, CTFE, HCFO-1131a, HFC-152a, HFC-152, HCFO-1131(E), HCFO-1131(Z), HFC-134a, HFC-161, HCFC-141, HCFC-123, HCFC-142, HCFC-142a, HCFO-1122, HCFO-1122a, HFO-1141, HCFC-21, HCFC-22, HFC-23, ethylene, and acetylene.

公开(公告)号：US20210317054A1

公开(公告)日：2021-10-14

申请号：US17350664

申请日：2021-06-17

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tomoyuki IWAMOTO ,  Takashi USUI ,  Takehiro CHAKI ,  Tsubasa NAKAUE ,  Kazuhiro TAKAHASHI

IPC: C07C17/23 ,  B01J23/44 ,  C07C17/354 ,  C07C17/25

Abstract: The production method according to the present disclosure comprises obtaining a product containing the fluoroethane from a fluoroethylene by a reaction in the presence of catalysts. Each catalyst is formed by supporting a noble metal on a carrier. A reactor for performing the reaction is filled with a catalyst having a noble metal concentration of C1 mass % based on the entire catalyst and a catalyst having a noble metal concentration of C2 mass % based on the entire catalyst to form an upstream portion and a downstream portion, respectively; and C1

公开(公告)号：US20210230086A1

公开(公告)日：2021-07-29

申请号：US17227601

申请日：2021-04-12

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takehiro CHAKI ,  Tsubasa NAKAUE ,  Megumi KUSHIDA ,  Kazuhiro TAKAHASHI

IPC: C07C17/20 ,  C07C19/08 ,  B01J23/18

Abstract: The present disclosure provides a method for producing HFC-143 that is not expensive, and that is more efficient than conventional methods. Specifically, the present disclosure provides a method for producing 1,1,2-trifluoroethane (HFC-143) that includes contacting at least one chlorine-containing compound selected from the group consisting of 1,1,2-trichloroethane (HCC-140), 1,2-dichloro-1-fluoroethane (HCFC-141), 1,1-dichloro-2-fluoroethane (HCFC-141a), (E,Z)-1,2-dichloroethylene (HCO-1130 (E,Z)), and (E,Z)-1-chloro-2-fluoroethylene (HCFO-1131 (E,Z)) with hydrogen fluoride to perform one or more fluorination reactions, thereby obtaining a reaction gas containing HFC-143, hydrogen chloride, and hydrogen fluoride.

公开(公告)号：US20210147323A1

公开(公告)日：2021-05-20

申请号：US17161910

申请日：2021-01-29

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takashi USUI ,  Tsubasa NAKAUE ,  Yuzo KOMATSU ,  Kazuhiro TAKAHASHI ,  Takehiro CHAKI ,  Megumi KUSHIDA

IPC: C07C17/358

Abstract: The present invention aims to provide an efficient method for obtaining a desired isomer of HFO-1132 from a composition comprising trans-1,2-difluoroethylene (HFO-1132(E)) and cis-1,2-difluoroethylene (HFO-1132(Z)). The present invention provides, as a means for solving the problem, a method for producing HFO-1132(E) and/or HFO-1132(Z), comprising steps (1) to (3): (1) supplying a composition comprising HFO-1132(E) and/or HFO-1132(Z) to a reactor filled with a catalyst to perform an isomerization reaction between the HFO-1132(E) and the HFO-1132(Z); (2) separating the reaction product obtained in step (1) into a first stream comprising the HFO-1132(E) as a main component, and a second stream comprising the HFO-1132(Z) as a main component; and (3) recycling the first stream or the second stream obtained in step (2) to the reactor, to subject the first stream or the second stream to the isomerization reaction.

公开(公告)号：US20210122960A1

公开(公告)日：2021-04-29

申请号：US17254425

申请日：2019-06-21

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Mitsushi ITANO ,  Kazuhiro TAKAHASHI ,  Hitomi KUROKI

IPC: C09K5/04 ,  F25B9/00

Abstract: The present disclosure provides a mixed refrigerant having four types of performance, i.e., an excellent coefficient of performance and refrigerating capacity that allow it to serve as an alternative refrigerant for R410A, a sufficiently low GWP, and non-flammability. Specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trifluoroiodomethane (CF3I) and difluoromethane (R32), wherein the contents of CF3I and R32 in the refrigerant are respectively 48 mass %≥CF3≥46 mass % and 54 mass %≥R32≥52 mass %, based on the total amount of CF3I and R32 taken as 100 mass %.