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US 7,253,305 B2Granted
Tertiary alkyl acetate preparation
AssigneeLyondell Chemical Technology, L.P.
InventorStephen H. Harris
Life of this patent
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Abstract
Esters are formed by reaction of acetic anhydride with tertiary butyl or tertiary anyl alcohol in the presence of tertiary amine catalyst such as DMAP or NMI catalyst and acetic acid in amount sufficient to present catalyst degradation; in preferred practice a mixed acetic anhydride and acetic acid stream is recycled to the esterfication.
Claims6
A process for the preparation of tertiary butyl acetate or tertiary amyl acetate wherein acetic anhydride is reacted with t-butyl alcohol or t-amyl alcohol in the presence of at least 5wt. % acetic acid during the entirety of the reaction.
Dependencies are inferred from the claim text.