The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1993
Filed:
Jun. 12, 1992
Applicant:
Inventors:
Gerard Krempf, Lyons, FR;
Bertrand Collier, La Barthe de Neste, FR;
Pierre Tellier, Lyons, FR;
Jean-Pierre Schirmann, Paris, FR;
Assignee:
Elf Atochem S.A., Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
423407 ; 564249 ;
Abstract
Azines, well suited for hydrolysis into hydrazine, are prepared in high yields by reacting ammonia, aqueous hydrogen peroxide and a carbonyl compound reactant in the presence of a catalytically effective amount of a catalyst medium therefor, i.e., an aqueous solution of ammonium acetate and acetamide or of acetamide and acetic acid, but in the absence of CO.sub.2.