Process for the preparation of diphenylamine and derivatives the

Details Process for the preparation of diphenylamine and derivatives the Process for the preparation of diphenylamine and derivatives the

1975-02-24

1977-09-06

Wyman, Daniel E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252455R, 252456, 252458, 252464, 252465, 260576, C07C 8754, C07C 9116, C07C 9118

Patent

active

040468100

ABSTRACT:
Diphenylamine, or the alkyl, phenyl, amino, alkoxy, hydroxy or halogen derivative thereof, is prepared through a continuous process wherein a stream of the corresponding imine (e.g. N-cyclohexylidene aniline) in the vapor phase and oxygen are fed to a reactor maintained at a temperature in the range from 300.degree. to 450.degree. C, at a rate providing a contact time between the reactants in the range of 0.1 to 20 seconds.

REFERENCES:
patent: 2413598 (1946-12-01), Ballard et al.
patent: 3219702 (1965-11-01), Van Verth et al.
patent: 3219704 (1965-11-01), Wilder et al.
patent: 3953508 (1976-04-01), Kalopissis et al.
Morrison et al., "Organic Chemistry", 3rd Edition, pp. 740 and 741, (1974).

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