Title:
PROCESS FOR PRODUCING HEXAFLUOROCYCLOBUTENE AND PROCESS FOR PRODUCING HEXAFLUOROCYCLOBUTANE
Document Type and Number:
WIPO Patent Application WO/1995/006022
Kind Code:
A1
Abstract:
A process for producing hexafluorocyclobutene by dechlorinating 1,2-dichlorohexafluorocyclobutane with hydrogen in the presence of a metal oxide and/or silicon oxide catalyst. A process for producing (Z)-1,2,3,3,4,4-hexafluorocyclobutane either by reducing hexafluorocyclobutene with hydrogen in a vapor phase in the presence of a palladium catalyst or by hydrogenating (reducing with hydrogen) 1,2-dichlorohexafluorocyclobutane in the presence of a rhodium catalyst. An inexpensively available 1,2-dichlorohexafluorocyclobutane can readily be converted into hexafluorocyclobutene in one step at an excellent selectivity. Further it is possible to produce (Z)-1,2,3,3,4,4-hexafluorocyclobutane in a high yield.
Inventors:
NAKADA TATSUO (JP)
AOYAMA HIROKAZU (JP)
YAMAMOTO AKINORI (JP)
AOYAMA HIROKAZU (JP)
YAMAMOTO AKINORI (JP)
Application Number:
PCT/JP1994/001285
Publication Date:
March 02, 1995
Filing Date:
August 03, 1994
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
NAKADA TATSUO (JP)
AOYAMA HIROKAZU (JP)
YAMAMOTO AKINORI (JP)
NAKADA TATSUO (JP)
AOYAMA HIROKAZU (JP)
YAMAMOTO AKINORI (JP)
International Classes:
B01J23/26; B01J23/34; B01J23/44; B01J23/46; B01J23/70; C07B61/00; C07C17/23; C07C17/281; C07C17/354; C07C23/06; (IPC1-7): C07C23/06; B01J21/08; B01J23/26; B01J23/44; B01J23/46; B01J23/74; B01J23/86; B01J27/138; C07C17/23; C07C17/354
Foreign References:
| JP4503209A | ||||
| US3636173A | 1972-01-18 | |||
| JPS4711669A | ||||
| JPH01132538A | 1989-05-25 |
Other References:
CHEMICAL ABSTRACTS, Vol. 71, No. 1, 7 July 1969 (07.07.69), (Columbus, Ohio, USA), LIONEL HILAIRE AND ANOTHER: "Catalytic hydrogenation of hexafluorocyclobutene", Refer to page 273, Abstract No. 3020h, & BULL. SOC. CHIM. FR. 1969, (3), 842-7 (Fr).
CHEMICAL ABSTRACTS, Vol. 106, No. 23, 8 June 1987 (08.06.87), (Columbus, Ohio, USA), S.M. IVANOVA AND ANOTHER: "Kinetics of dimerization of chlorotrifluoroethylene", Refer to page 674, Abstract No. 195666j, KINET, KATAL. 1986, 27(5), 1236-7 (Russ).
See also references of EP 0716065A4
CHEMICAL ABSTRACTS, Vol. 106, No. 23, 8 June 1987 (08.06.87), (Columbus, Ohio, USA), S.M. IVANOVA AND ANOTHER: "Kinetics of dimerization of chlorotrifluoroethylene", Refer to page 674, Abstract No. 195666j, KINET, KATAL. 1986, 27(5), 1236-7 (Russ).
See also references of EP 0716065A4
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