Patent · US Active

Process for the preparation of nitrobenzene by adiabatic nitration

US7781624B2 · kind B2 · utility

9Cited by

8References

6Claims

0Family size

Assignee

Bayer MaterialScience AG · DE

Inventors

Andreas Rausch · Regensburg, DE
Thomas Knauf · Dormagen, DE
Jeffrey Bolton · Mülheim an der Ruhr, DE
Alexandre Racoes · Krefeld, DE

Key dates

Filing date	Dec 8, 2008
Grant date	Aug 24, 2010
Priority date	—
Expiry date	Dec 8, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C201/08
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

This invention relates to a process for the continuous preparation of nitrobenzene. This process comprises the adiabatic nitration of benzene with a mixture of sulfuric acid and nitric acid, in which the sum of the concentrations in the reaction zone of the metal ions which form sparingly soluble metal sulfates is less than 900 mg/l, based on the volume of the aqueous phase which contains sulfuric acid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.