Title:
METHOD FOR MANUFACTURING DIALKYL CARBONATE AND DEVICE FOR MANUFACTURING DIALKYL CARBONATE
Document Type and Number:
WIPO Patent Application WO/2022/230776
Kind Code:
A1
Abstract:
The present invention provides a method for manufacturing a dialkyl carbonate including two separation and purification steps (I) and (II). In step (I), the dialkyl carbonate concentration in a mixture (AT) is 25.00-95.00 mass% and the column bottom temperature is 115°C or above. In step (II), the dialkyl carbonate concentration in a column bottom component (BB) is 99.00-99.95 mass% and the purity of a dialkyl carbonate in a side cut component (Bs) is 99.99 mass% or above.
Inventors:
ENOMOTO MIYAKO (JP)
OCHI HIROYUKI (JP)
OCHI HIROYUKI (JP)
Application Number:
PCT/JP2022/018599
Publication Date:
November 03, 2022
Filing Date:
April 22, 2022
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
C07C68/08; C07C69/96
Domestic Patent References:
| WO2007074664A1 | 2007-07-05 |
Foreign References:
| CN107311864A | 2017-11-03 | |||
| CN105384639A | 2016-03-09 | |||
| CN107311864A | 2017-11-03 | |||
| CN105384639A | 2016-03-09 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
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