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, 2006
Filed:
Feb. 09, 2005
Juergen Muennig, Kaarst, DE;
Bernd Pennemann, Bergisch Gladbach, DE;
Dietmar Wastian, Dormagen, DE;
Volker Michele, Cologne, DE;
Jesse Caravaggio, Kingwood, TX (US);
John F. Gisch, Jr., Houston, TX (US);
Juergen Muennig, Kaarst, DE;
Bernd Pennemann, Bergisch Gladbach, DE;
Dietmar Wastian, Dormagen, DE;
Volker Michele, Cologne, DE;
Jesse Caravaggio, Kingwood, TX (US);
John F. Gisch, Jr., Houston, TX (US);
Bayer MaterialScience LLC, Pittsburgh, PA (US);
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
The present invention is directed to a process for the isothermal nitration of aromatic organic compounds, wherein an aromatic organic compound is brought into contact and reacted with a mixture of sulfuric acid and nitric acid. The mixture of sulfuric acid and nitric acid, and the aromatic organic compound are brought into contact with each other through a mixing nozzle which comprises a substantially cylindrical tubular reactor and an annular gap which surrounds the tubular reactor. The aromatic organic compound flows through the tubular reactor, and the mixture of sulfuric acid and nitric acid flows through the annular gap, and they are mixed together upon emerging from the tubular reactor and the annular gap, wherein the ratio of the average rates of flow of the aromatic organic compound in the tubular reactor, and of the mixture of sulphuric acid and nitric acid in the annular gap ranges from 0.5:1 to 10:1.