Title:
PRODUCTION OF CARBAZINIC ACID
Document Type and Number:
Japanese Patent JP2993856
Kind Code:
B2
Abstract:
PURPOSE: To obtain the subject compound in high yield and in a much more reduced consumption amount of a carbon dioxide gas than a conventional method, by reacting a hydrazine compound with a liquid carbon dioxide gas under pressure.
CONSTITUTION: This compound is obtained by reacting (A) a hydrazine compound or its aqueous solution with (B) a liquid carbon dioxide gas, preferably approximately in an equimolar amount of the component B to the component A under pressure. Hydrazine hydrate is used as the component A and the reaction is pref. carried out under 10-45kg/cm2 at -30 to 10°C for 1-2 hours while stirring.
Inventors:
Maekawa Tsukasa
Hiroyasu Hayashi
Akinori Oka
Satoshi Namura
Hiroyasu Hayashi
Akinori Oka
Satoshi Namura
Application Number:
JP30025194A
Publication Date:
December 27, 1999
Filing Date:
November 08, 1994
Export Citation:
Assignee:
Otsuka Chemical Co., Ltd.
International Classes:
C07C281/02; (IPC1-7): C07C281/02
Other References:
【文献】Chemical Abstracts,No.103:226253(1985)
Attorney, Agent or Firm:
Iwao Tamura
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