Title:
PRODUCTION METHOD FOR HEXAFLUORO-1,3-BUTADIENE
Document Type and Number:
WIPO Patent Application WO/2018/216426
Kind Code:
A1
Abstract:
Provided is a low-waste, industrially applicable production method for hexafluoro-1,3-butadiene. The production method for hexafluoro-1,3-butadiene comprises: a reaction step for reacting a butyl halide represented by the chemical formula CF2X1-CFX2-CFX3-CF2X4 (in which X1, X2, X3, and X4 each independently represent a halogen atom that is not a fluorine atom) in an organic solvent in the presence of zinc, eliminating the halogen atoms (X1, X2, X3, X4) that are not fluorine atoms to generate hexafluoro-1,3-butadiene, and obtaining a product that contains hexafluoro-1,3-butadiene; and a post-processing step for separating the hexafluoro-1,3-butadiene from the product obtained in the reaction step and then adding water to what is left of the product after the separation and removing the organic solvent to obtain an aqueous solution of a zinc halide.
Inventors:
FUKUCHI YOHSUKE (JP)
NAKAMURA ATSUSHI (JP)
INOUE NOZOMI (JP)
HINO MITSUHIRO (JP)
SEKIGUCHI TOMOKI (JP)
NAKAMURA ATSUSHI (JP)
INOUE NOZOMI (JP)
HINO MITSUHIRO (JP)
SEKIGUCHI TOMOKI (JP)
Application Number:
PCT/JP2018/016881
Publication Date:
November 29, 2018
Filing Date:
April 25, 2018
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
C07C17/23; C07C21/18
Domestic Patent References:
| WO2007125972A1 | 2007-11-08 | |||
| WO2005023734A1 | 2005-03-17 |
Foreign References:
| JP2007332050A | 2007-12-27 | |||
| JP2006312637A | 2006-11-16 | |||
| JPS54115698A | 1979-09-08 | |||
| JPS505681B1 | 1975-03-06 |
Other References:
See also references of EP 3632883A4
Attorney, Agent or Firm:
MORI Tetsuya et al. (JP)
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