Process for the manufacture of alkylene carbonates
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United States of America Patent
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Oct 7, 1980
Grant Date -
N/A
app pub date -
Apr 12, 1979
filing date -
Apr 14, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A new process is disclosed for the synthesis of alkylene carbonates having from 2 to 4 carbon atoms in the chain, starting from a corresponding halohydrin having the formula: ##STR1## wherein R.sub.a, R.sub.b, R.sub.c and R.sub.d are independently hydrogen or alkyl, aryl, alkylaryl or arylalkyl radicals and where X is a halogen, characterized in that said halohydrin is reacted with a bicarbonate of a quaternary -onium compound, where '-onium' means ammonium, phosphonium, arsonium or stibonium, preferably using an organic solvent as diluent and operating in the presence of carbon dioxide.
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