Uniroyal Chemical Company, Inc.

Gerard V Smith

Mark P Ferrandino

Ruozhi Song

Franklin H Barrows

Russell E Malz, Jr

Chung-Yuan Lin

Russell Edward Malz

Processes of preparing para substituted phenylamines, such as, p-phenylenediamines, and particularly, p-aminodiphenylamine. One process involves contacting phenylhydroxylamine with a nucleophilic reagent, such as aniline, in specified proportions and within a specified temperature range, in the absence of oxygen, and in the presence of a homogeneous acid catalyst, such as hydrochloric acid. A second process involves contacting phenylhydroxylamine with a nucleophilic reagent, such as aniline, in the presence of a solid acid catalyst, such as acidic zeolite Y, under reaction conditions.

Process of preparing para substituted phenylamines

A process of preparing para phenylenediamines, such as, p-aminodiphenylamine. The process involves contacting nitrobenzene or a substituted derivative thereof with hydrogen and an amine, such as aniline, in the presence of a hydrogenation catalyst, a hydrogenation inhibitor, and an acid cocatalyst under reaction conditions.

Process of preparing para phenylamines

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Carbondale, IL, United States of America

Gerard V Smith