Process for the direct acetylation of aromatic amines
AssigneeMobay Chemical Corporation
InventorsEllis Margaret D., Richard L. Ferencz, Dietmar Kalz
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Abstract
The present disclosure is concerned with a process of reacting a solid aromatic amine with liquid acetic anhydride to yield a solid amide. The amine is in a flowable particulate form and it is subject to sufficient agitation during the reaction to prevent agglomeration. The amide is recovered as a flowable particulate by evaporation of the acetic acid by product and any excess acetic anhydride.
Claims9
A process for the acetylation of solid aromatic amines comprising contacting an aromatic amine in flowable particulate form with liquid acetic anhydride under agitation conditions sufficient to prevent the aggolomeration of the particles and then evaporating any unreacted acetic anhydride and the acetic acid by-product without melting the acetylated amine.
Dependencies are inferred from the claim text.