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:
Mar. 20, 1979
Filed:
Sep. 19, 1977
Applicant:
Inventors:
Matthias Wetzler, Ludwigshafen, DE;
Toni Dockner, Meckenheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548338 ; 260688 ;
Abstract
Manufacture of 4-nitroimidazoles by nitrating imidazoles with nitric acid in the presence of urea while at the same time removing water from the mixture by distillation. The compounds which can be manufactured by the process of the invention are catalysts for polymerization reactions and condensation reactions, especially for reactions with epoxides, the aldol condensation, the manufacture of polyurethanes, condensation reactions with malonic esters or acetoacetic esters and intermediates for the manufacture of dyes, textile auxiliaries and insecticides.