Title:
METHOD FOR PRODUCING 3,3'-BIS(TRIFLUOROMETHYL)HYDRAZOBENZENE
Document Type and Number:
Japanese Patent JP2006265129
Kind Code:
A
Abstract:
To provide a method for the single-stage production of stable 3,3'-bis(trifluoromethyl)hydrazobenzene usable as a raw material for 2,2'-bis(trifluoromethyl)-4,4'-diaminobiphenyl which is useful as a raw material for polyimide by using m-nitrobenzotrifluoride as a starting raw material.
3,3'-Bis(trifluoromethyl)hydrazobenzene is produced by reducing m-nitrobenzotrifluoride with zinc in the presence of an organic solvent and an alkaline aqueous solution to obtain 3,3'-bis(trifluoromethyl)hydrazobenzene and adjusting the pH of the reaction liquid to 6-11 after completing the reduction reaction.
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Inventors:
NAMEKATA TAKESHI
MURATA TETSUO
MURATA TETSUO
Application Number:
JP2005082943A
Publication Date:
October 05, 2006
Filing Date:
March 23, 2005
Export Citation:
Assignee:
AIR WATER INC
International Classes:
C07C241/00; C07C243/22
Domestic Patent References:
JPH05140163A | 1993-06-08 | |||
JP2006143703A | 2006-06-08 | |||
JPS357396B1 | ||||
JPS5424838A | 1979-02-24 | |||
JPS6396166A | 1988-04-27 | |||
JPS54145622A | 1979-11-14 | |||
JPS56113751A | 1981-09-07 | |||
JPS4828433A | 1973-04-14 |
Attorney, Agent or Firm:
Shigemitsu Nakajima
Kazu Yamaguchi
Kazu Yamaguchi