Title:
フッ素化合物の製造方法
Document Type and Number:
Japanese Patent JP7209995
Kind Code:
B2
Abstract:
To provide a production process that can continuously produce 1,1,1,4,4,5,5,5-octafluoro-2-pentene (HFO1438 mzz) without using pure TFE having explosion risk.SOLUTION: Said production process comprises: a first step of pyrolyzing chlorodifluoromethane to yield a TFE crude product containing tetrafluoroethylene (TFE) and hydrogen chloride; a second step of subjecting the TFE crude product to hydrogen chloride removal, or hydrogen chloride removal and drying, to yield a TFE crude product from which hydrogen chloride is removed; and a third step of producing, in the presence of catalyst, HFO1438 mzz from the hydrogen chloride-removed TFE crude product and 1-3,3,3-tetrafluoropropene.SELECTED DRAWING: Figure 1
Inventors:
Tsunemichi Kwon
Yang Yang
Sluice Junji
Tamura Masanori
Yang Yang
Sluice Junji
Tamura Masanori
Application Number:
JP2018115572A
Publication Date:
January 23, 2023
Filing Date:
June 18, 2018
Export Citation:
Assignee:
National Institute of Advanced Industrial Science and Technology
International Classes:
C07C17/278; C07C21/18
Domestic Patent References:
| JP2069425A | ||||
| JP2004075621A | ||||
| JP7502254A |
Foreign References:
| WO2008057513A1 | ||||
| CN101973843A |