Process for the preparation of acetic anhydride
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United States of America Patent
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Sep 2, 1986
Grant Date -
N/A
app pub date -
Dec 17, 1981
filing date -
Dec 24, 1980
priority date (Note) -
Expired
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Abstract
The invention relates to a process for the preparation of acetic anhydride by carbonylation. In the process, carbon monoxide is reacted with methyl acetate in an anhydrous medium, in the liquid phase, in the presence of an effective amount of nickel, methyl iodide, a quaternary ammonium or quaternary phosphonium iodide and a lithium salt, the reaction medium initially containing acetic anhydride, if desired.
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