Title:
ジアルキルカーボネートおよびアルカンジオールの製造方法
Document Type and Number:
Japanese Patent JP2009527530
Kind Code:
A
Abstract:
An alkylene carbonate and an alkanol are subjected to transesterification to yield a dialkyl carbonate and alkanediol in a process comprising (a) introducing the alkylene carbonate and an alkanol feedstock into a reaction zone to react in the presence of a transesterification catalyst to yield an alkanediol-rich stream and a stream comprising dialkyl carbonate and alkanol, which streams are separated; (b) passing the stream comprising dialkyl carbonate and alkanol to an extractive distillation zone in which an extractant is added to the stream; (c) obtaining from the extractive distillation zone an alkanol-rich vapor stream and a bottom stream containing the extractant and the dialkyl carbonate; (d) separating the bottom stream from step (c) in a second non-extractive distillation zone to yield a dialkyl carbonate-rich top stream and a extractant-rich bottom stream; and (e) at least partly recycling the extractant-rich bottom stream to the extractive distillation zone, wherein the extractant-rich bottom stream is used as heat source for the alkanol feedstock.
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Inventors:
Juan del Heide, Evert
Nisbett, Timothy Michael
Baposhiyan, Garo Garbis
Nisbett, Timothy Michael
Baposhiyan, Garo Garbis
Application Number:
JP2008555775A
Publication Date:
July 30, 2009
Filing Date:
February 20, 2007
Export Citation:
Assignee:
Ciel International Research Mart Shats Pay BV
International Classes:
C07D317/36; C07C31/20; C07C68/04
Domestic Patent References:
| JP2003300936A | 2003-10-21 | |||
| JP2003300918A | 2003-10-21 | |||
| JP2006182683A | 2006-07-13 | |||
| JP2003146983A | 2003-05-21 |
Foreign References:
| CN1528735A | 2004-09-15 |
Attorney, Agent or Firm:
Yoshio Kawaguchi
Makoto Ono
Chihiro Watanabe
Kenkyo Kanayama
Katsuma Osaki
Mitsuaki Tsubokura
Makoto Ono
Chihiro Watanabe
Kenkyo Kanayama
Katsuma Osaki
Mitsuaki Tsubokura