Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2006-06-09
2010-06-15
Sullivan, Daniel M (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C562S517000, C562S890000, C562S891000
Reexamination Certificate
active
07737298
ABSTRACT:
Disclosed is a process for the production of acetic acid or mixtures of acetic acid and acetic anhydride in a carbonylation process wherein a mixture comprising methyl acetate and/or dimethyl ether and methyl iodide is contacting in the liquid phase with carbon monoxide in the presence of a carbonylation catalyst at elevated pressures and temperatures. Methanol, water, or a mixture thereof is added to an acetic anhydride-containing stream within a flash evaporation zone to convert some or all of the acetic anhydride to acetic acid and optionally methyl acetate and to provide heat for the evaporation of a portion of the product effluent produced by the carbonylation process.
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Bewley Jerry Lee
Earls Brandon Tyler
Kline Robert Sterling
Wellman, Jr. Gregory Abbott
Eastman Chemical Company
Graves, Jr. Bernard J.
Katakam Sudhakar
Middlemas Eric D.
Sullivan Daniel M
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