Title:
高純度ジオールの工業的製造法
Document Type and Number:
Japanese Patent JP4986866
Kind Code:
B2
Abstract:
It is an object of the present invention to provide a specific apparatus and process for industrially producing a high-purity diol by taking a cyclic carbonate and an aliphatic monohydric alcohol as starting materials. More specifically, it is an object to thus provide a specific industrial apparatus and industrial production process that are inexpensive and, for example, enable the high-purity diol to be produced in an amount of not less than 1 ton / hr, preferably not less than 2 tons /hr, more preferably not less than 3 tons / hr, stably for a prolonged period of time (e.g. not less than 1000 hours, preferably not less than 3000 hours, more preferably not less than 5000 hours). The above objects can be attained by using a continuous multi-stage distillation column E having a specified structure, and withdrawing a liquid component from the side cut outlet, which is installed at the bottom of a chimney tray having a specified structure installed in an enrichment section of the continuous multi-stage distillation column E.
Inventors:
Shinichi Fukuoka
Yuki Miyaji
Hiroshi Hachiya
Kazuhiko Matsuzaki
Yuki Miyaji
Hiroshi Hachiya
Kazuhiko Matsuzaki
Application Number:
JP2007556825A
Publication Date:
July 25, 2012
Filing Date:
January 25, 2007
Export Citation:
Assignee:
Asahi Kasei Chemicals Corporation
International Classes:
C07C29/128; B01D3/14; B01D3/16; C07C27/02; C07C29/80; C07C31/20; C07B61/00
Domestic Patent References:
| JP2003342209A | 2003-12-03 | |||
| JP2004131394A | 2004-04-30 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Shinji Oga
Toshifumi Onuki
Shinji Oga
Toshifumi Onuki