Process for purifying propylene oxide
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United States of America Patent
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May 18, 2004
Grant Date -
Jun 5, 2003
app pub date -
Oct 24, 2002
filing date -
Apr 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is described for purifying propylene oxide, which includes the step of distilling propylene oxide containing impurities in the presence of a hydrocarbon having 5 carbon atoms or less. According to the present invention, a process is provided for purifying propylene oxide which has a feature that impurities contained in a solution containing propylene oxide to be purified can be efficiently removed. Oxygen-containing impurities, in particular, can be very efficiently removed.
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