Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2007-08-07
2007-08-07
Puttlitz, Karl (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C562S517000, C562S890000
Reexamination Certificate
active
11425220
ABSTRACT:
Disclosed is a carbonylation process wherein a mixture of a dialkyl carbonate and halide compound is contacted with carbon monoxide in the presence of a metal selected from Group VIII of the Periodic Table to co-produce carbon dioxide and a carbonyl compound selected from a carboxylic acid, an alkyl carboxylate ester, a carboxylic acid anhydride or a mixture of any two or more thereof. The carbon dioxide co-product of the process may be recovered, and sold or further reacted with a suitable substrate to produce useful chemicals such as urea or cyclic carbonates.
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Eastman Chemical Company
Graves, Jr. Bernard J.
Middlemas Eric D.
Puttlitz Karl
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