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:
Sep. 02, 1980
Filed:
May. 22, 1978
Applicant:
Inventors:
Max Schneider, Kelkheim, DE;
Lothar Schmitt, Bad Soden am Taunus, DE;
Hartmut Heise, Bad Soden am Taunus, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 422129 ; 260688 ;
Abstract
3-Nitro-4-acetamino-toluene is obtained by introducing continuously a solution of 4-acetamino-toluene in sulfuric acid and, thereafter, aqueous 40 to 65% (by weight) nitric acid into the circulating reaction mixture. This process is advantageously performed in a device consisting of a closed circuit reactor, two inlets arranged successively in the direction of the product stream, a cooler and an outlet.