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Title:
PROCESS FOR PRODUCING HYDROGENATED AROMATIC POLYCARBOXYLIC ACID AND PROCESS FOR PRODUCING HYDROGENATED AROMATIC POLYCARBOXYLIC ACID ANHYDRIDE
Document Type and Number:
Japanese Patent JP2009057385
Kind Code:
A
Abstract:

To provide processes for industrially advantageously producing at a good yield, a hydrogenated aromatic polycarboxylic acid having high purity.

The invention provides processes for producing a hydrogenated aromatic polycarboxylic acid by hydrogenating an aromatic polycarboxylic acid at hydrogen partial pressure of at least a specific value by a batch system in the presence of a specific amount of a precious metal catalyst, and by feeding an aromatic polycarboxylic acid to a filling bed of a catalyst containing a precious metal catalyst at a specific weight hourly space velocity (WHSV) at least specific hydrogen partial pressure by a continuous flow system.


Inventors:
Arima, Fumiya
Application Number:
JP2008000236262
Publication Date:
March 19, 2009
Filing Date:
September 16, 2008
Export Citation:
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Assignee:
MITSUBISHI GAS CHEM CO INC
International Classes:
C07C51/36; C07D493/04; C07B61/00; C07C51/347; C07C51/42; C07C51/56; C07C61/00; C07C61/08; C07C61/09; C07C61/12; C07C61/125; C07C61/24; C07D307/77
Domestic Patent References:
JPH08325196A
JPH10130253A
JPH0853375A
JPH02504363A
JP2002001118A
JPH0782211A
JP2000198760A
JPH01159059A
JPS647953A
JPH0866633A
Foreign References:
US5412108A
Attorney, Agent or Firm:
永井 隆