Process for the polynitration of aromatic compounds

Details Process for the polynitration of aromatic compounds Process for the polynitration of aromatic compounds

1995-10-13

1997-04-01

Barts, Samuel

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568934, 568935, C07C20506

Patent

active

056168187

ABSTRACT:
An aromatic compound is polynitrated in a continuous process in a single apparatus under adiabatic conditions in an emulsion as the reaction medium. From 1.3 to 3.5 mol of HNO.sub.3 per mol of aromatic compound are introduced in the form of a nitronium ion solution into the reactor with the aromatic compound under conditions such that an emulsion forms. The emulsion, which has a tendency to coalesce, is maintained by repeated dispersion. The first dispersion of the liquid streams to produce the emulsion takes place in less than one second. At least 20% of the total amount of HNO.sub.3 to be used should generally be present during this first dispersion. It is preferred, however, that the total amount of nitronium ion solution to be used be present at the time the aromatic compound and nitronium ion solution are first dispersed.

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