Title:
アルカンジオールの調製方法
Document Type and Number:
Japanese Patent JP2009527527
Kind Code:
A
Abstract:
The invention provides a process for the preparation of alkanediol comprising the steps: (i) contacting alkylene oxide with carbon dioxide in the presence of a carbonation catalyst to obtain a reaction mixture containing alkylene carbonate at a reaction temperature of from 100 to 200° C.; (ii) contacting the reaction mixture obtained in step (i) with R-OH, in which R is hydrogen or an alkyl group in the presence of a catalyst to obtain a second reaction mixture containing alkanediol and R2CO3; (iii) subjecting the second reaction mixture containing alkanediol and R2CO3 to a separation step to yield a crude alkanediol stream, which is subjected to distillation to yield a purified stream of alkanediol as the bottom stream; (iv) subjecting the purified stream of alkanediol obtained in step (iii) to further distillation to obtain a second bottom stream containing a mixture of alkanediol, heavy components, and optionally carbonation catalyst, and a top stream containing high purity alkanediol; wherein at least part of the reaction mixture obtained in step (i) is used for heat exchange with at least part of the crude alkanediol stream and/or with at least part of the purified alkanediol stream.
Inventors:
Juan del Heide, Evert
Frouwen Elder, Cornelis Leonard Maria
Frouwen Elder, Cornelis Leonard Maria
Application Number:
JP2008555772A
Publication Date:
July 30, 2009
Filing Date:
February 20, 2007
Export Citation:
Assignee:
Ciel International Research Mart Shats Pay BV
International Classes:
C07C27/02; C07C29/80; C07C31/20; C07C68/06; C07C69/96; C07B61/00
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