Process for the production of aromatic amines

Details Process for the production of aromatic amines Process for the production of aromatic amines

2005-11-15

2005-11-15

Davis, Brian (Department: 1621)

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

Organic compounds

Amino nitrogen containing

C564S420000, C564S421000, C564S422000

Reexamination Certificate

active

06965053

ABSTRACT:
A process for the production of aromatic amines which comprises the reduction of an aromatic compound containing at least two nitro groups with hydrogen in the presence of a catalyst is disclosed. The reaction is carried out so as to maintain up to 10% by weight of reaction intermediates (aminonitrites) and the solution produced is treated to recover the aromatic amine with a purity of over 99% and a mixture consisting of aromatic amine and reaction intermediates is recycled to the reactor.

REFERENCES:
patent: 5563296 (1996-10-01), Zarnack et al.
patent: 198 57 409 (2002-06-01), None

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