Carbonate ester purification method, carbonate ester solution production method, and carbonate ester purification apparatus
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United States of America Patent
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Jul 16, 2019
Grant Date -
Dec 14, 2017
app pub date -
Dec 25, 2015
filing date -
Dec 26, 2014
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Abstract
Provided is a carbonate ester purification apparatus including a treatment part for mixing a first solution containing a carbonate ester and an acidic substance with an alcohol solution of a metal alcoholate to obtain a mixed solution containing a reaction product of the acidic substance and the metal alcoholate, a separation part for removing a metal salt contained in the reaction product from the mixed solution to obtain a second solution, and a distillation part for removing a component from the second solution, the component different in boiling point from the carbonate ester to obtain a carbonate ester solution, wherein a content of the metal alcoholate in the alcohol solution is 5 to 18 mass %.
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