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Title:
METHOD FOR PRODUCING CYCLOHEXANE DICARBOXYLIC ACID
Document Type and Number:
Japanese Patent JP2002193873
Kind Code:
A
Abstract:

To provide a method for producing cyclohexanedicarboxylic acid of high purity with industrial advantage by efficiently removing impurity, when phthalic acids are hydrogenated to cyclohexanedicarboxylic acid.

Phthalic acids are hydrogenated in the presence of a palladium catalyst to produce cyclohexanedicarboxylic acids wherein the aqueous solution of the cyclohexanedicarboxylic acids resultant from the catalytic hydrogenation is brought into contact with an extraction solvent.


Inventors:
ARIMA FUMIYA
MACHIDA HIROSHI
MOTO KO
Application Number:
JP2000401076A
Publication Date:
July 10, 2002
Filing Date:
December 28, 2000
Export Citation:
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Assignee:
MITSUBISHI GAS CHEMICAL CO
International Classes:
C07C51/36; C07B61/00; C07C51/43; C07C51/44; C07C51/48; C07C61/09; (IPC1-7): C07C51/36; C07B61/00; C07C51/43; C07C51/44; C07C51/48; C07C61/09
Domestic Patent References:
JPH06184041A1994-07-05
JPH06321852A1994-11-22
JPS58198439A1983-11-18
JP2002069032A2002-03-08
JP2000198760A2000-07-18
JPH07507041A1995-08-03
JPH06184041A1994-07-05
JPH06321852A1994-11-22
JPS58198439A1983-11-18
JP2002069032A2002-03-08
JP2000198760A2000-07-18
JPH07507041A1995-08-03



 
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