Title:
METHOD FOR PRODUCING DIFLUOROETHYLENE
Document Type and Number:
WIPO Patent Application WO/2020/250914
Kind Code:
A1
Abstract:
The present invention provides a method for efficiently obtaining HFO-1132 (E) and/or HFO-1132 (Z). A method for producing HFO-1132 (E) and/or HFO-1132 (Z), said method comprising a step wherein a composition containing HFO-1132 (E) and/or HFO-1132 (Z) is introduced into a reactor and an isomerization reaction between HFO-1132 (E) and HFO-1132 (Z) is caused by means of light irradiation.
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Inventors:
TAKAHASHI KAZUHIRO (JP)
YAMAMOTO OSAMU (JP)
YAMAMOTO OSAMU (JP)
Application Number:
PCT/JP2020/022770
Publication Date:
December 17, 2020
Filing Date:
June 10, 2020
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
C07C17/358; C07C21/18
Foreign References:
| JP2015229768A | 2015-12-21 | |||
| JP2019214535A | 2019-12-19 |
Other References:
WAMPLER, F. B.: "The S02(3B1) Photosensitized Isomerization of Cis- and Trans-1, 2- Difluoroethylene", INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, vol. 8, 1976, pages 511 - 517, XP055663372
WAMPLER, F. B.: "The Photolysis of S02 at 3080A in the Presence of Cis- and Trans-1, 2- Difluoroethylene", INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, vol. 8, 1976, pages 519 - 528, XP055771644
STRAUSZ O P, NORSTROM R J, SALAHUB D, GOSAVI R K, GUNNING 13 E, CSIZMADIA1 I G: "Mercury 6(3P1) Photosensitization of Mono- and Difluoroethylenes. Correlation of Mechanism with Calculated Molecular Orbital Energy Levels", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 92, no. 22, 1970, pages 6395 - 6402, XP055771647
GUILLORY WILLIAM A., ANDREWS GEORGE H.: "The vacuum‐ultraviolet photolysis of the difluoroethylenes", THE JOURNAL OF CHEMICAL PHYSICS, vol. 62, no. 8, 15 April 1975 (1975-04-15), US , pages 3208 - 3216, XP009532505, ISSN: 0021-9606, DOI: 10.1063/1.430871
CRAIG, N. C . ET AL.: "Thermodynamics of cis-trans isomerizations. The 1, 2- difluoroethylenes", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 83, 1961, pages 3047 - 3050, XP055663370
ARAI TATSUO, TOKUMARU KATSUMI: "Novel Insight into the Photochemical cis-trans Isomerization of Olefins", JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY, JAPAN, vol. 44, no. 11, 1986, pages 999 - 1009, XP055771651
WAMPLER, F. B. ET AL.: "The S02(3B1) Photosensitized Isomerization of cis-and trans-1, 2-dichloroethylene", INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, vol. 8, 1976, pages 585 - 597, XP055771657
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 83, 1961, pages 3047
See also references of EP 3981755A4
WAMPLER, F. B.: "The Photolysis of S02 at 3080A in the Presence of Cis- and Trans-1, 2- Difluoroethylene", INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, vol. 8, 1976, pages 519 - 528, XP055771644
STRAUSZ O P, NORSTROM R J, SALAHUB D, GOSAVI R K, GUNNING 13 E, CSIZMADIA1 I G: "Mercury 6(3P1) Photosensitization of Mono- and Difluoroethylenes. Correlation of Mechanism with Calculated Molecular Orbital Energy Levels", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 92, no. 22, 1970, pages 6395 - 6402, XP055771647
GUILLORY WILLIAM A., ANDREWS GEORGE H.: "The vacuum‐ultraviolet photolysis of the difluoroethylenes", THE JOURNAL OF CHEMICAL PHYSICS, vol. 62, no. 8, 15 April 1975 (1975-04-15), US , pages 3208 - 3216, XP009532505, ISSN: 0021-9606, DOI: 10.1063/1.430871
CRAIG, N. C . ET AL.: "Thermodynamics of cis-trans isomerizations. The 1, 2- difluoroethylenes", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 83, 1961, pages 3047 - 3050, XP055663370
ARAI TATSUO, TOKUMARU KATSUMI: "Novel Insight into the Photochemical cis-trans Isomerization of Olefins", JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY, JAPAN, vol. 44, no. 11, 1986, pages 999 - 1009, XP055771651
WAMPLER, F. B. ET AL.: "The S02(3B1) Photosensitized Isomerization of cis-and trans-1, 2-dichloroethylene", INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, vol. 8, 1976, pages 585 - 597, XP055771657
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 83, 1961, pages 3047
See also references of EP 3981755A4
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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