Carbonate ester purification method, carbonate ester solution production method, and carbonate ester purification apparatus
US10351508B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 25, 2015 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Dec 28, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C69/96
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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 %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.