Process for preparing alkylene carbonates from alkylene oxides
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United States of America Patent
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Jun 5, 1990
Issued Date -
N/A
app pub date -
Apr 10, 1989
filing date -
Oct 25, 1984
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Expired
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Abstract
An alkylene oxide, e.g. ethylene oxide, is prepared from the corresponding alkylene carbonate, e.g. ethylene carbonate, in the presence of an effective amount of a quaternary arsonium halide. The quaternary arsonium halides are also effective catalysts for the reverse reaction, that is, to form alkylene carbonates from the corresponding epoxide and carbon dioxide.
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