Title:
PROCESS FOR THE PREPARATION OF AROMATIC CARBONIC ESTER
Document Type and Number:
WIPO Patent Application WO/1997/047586
Kind Code:
A1
Abstract:
An aromatic carbonic ester is prepared continuously and efficiently by reacting an aromatic carboxylic ester with an aliphatic carbonic ester and/or an aromatic/aliphatic carbonic ester through transesterification. A raw material comprising an aromatic carboxylic ester and an aliphatic or aromatic/aliphatic carbonic ester and a catalyst are continuously fed into the first stage of a reaction-distillation column (1) through a feed pipe (5), while an aliphatic carbonic ester (a) having a boiling point lower than that of the reaction fluid present in the second stage under the above first stage is continuously fed into the second stage through a feed pipe (6). The second plate is preferably the bottom of the reaction-distillation column (1). The feed of the aliphatic carbonic ester (a) is preferably 0.001 to 5 times that of the raw material by weight.
Inventors:
YOSHIDA HIROSHI (JP)
TSUNEKI HIDEAKI (JP)
MORIYA ATUSI (JP)
WAKAYAMA HIROKI (JP)
WATANABE KENICHI (JP)
ONDA YOSHIYUKI (JP)
TSUNEKI HIDEAKI (JP)
MORIYA ATUSI (JP)
WAKAYAMA HIROKI (JP)
WATANABE KENICHI (JP)
ONDA YOSHIYUKI (JP)
Application Number:
PCT/JP1997/002000
Publication Date:
December 18, 1997
Filing Date:
June 10, 1997
Export Citation:
Assignee:
NIPPON CATALYTIC CHEM IND (JP)
YOSHIDA HIROSHI (JP)
TSUNEKI HIDEAKI (JP)
MORIYA ATUSI (JP)
WAKAYAMA HIROKI (JP)
WATANABE KENICHI (JP)
ONDA YOSHIYUKI (JP)
YOSHIDA HIROSHI (JP)
TSUNEKI HIDEAKI (JP)
MORIYA ATUSI (JP)
WAKAYAMA HIROKI (JP)
WATANABE KENICHI (JP)
ONDA YOSHIYUKI (JP)
International Classes:
B01J31/12; C07B61/00; C07C68/06; C07C68/08; C07C69/96; (IPC1-7): C07C69/96; C07C68/06
Foreign References:
| JPS56123948A | 1981-09-29 | |||
| JPH049358A | 1992-01-14 | |||
| JPH07304713A | 1995-11-21 | |||
| JPH0873412A | 1996-03-19 |
Other References:
See also references of EP 0854132A4
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