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:
May. 09, 1978
Filed:
Oct. 12, 1976
Applicant:
Inventors:
Siegfried Bohm, Cologne, DT;
Karlfried Wedemeyer, Cologne, DT;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C01B / ;
U.S. Cl.
CPC ...
260192 ; 423500 ; 423502 ; 423503 ;
Abstract
A process for the preparation of azodicarbonamide by oxidation of hydrazodicarbonamide in an aqueous suspension containing hydrogen peroxide wherein the reaction is carried out in the presence of iodine at a temperature between 50.degree. and 95.degree. C. while the reaction mixture has a pH ranging from 1.0 to 5.0.