Title:
METHOD FOR PRODUCING PYROMELLITIC ACID
Document Type and Number:
Japanese Patent JP2001151722
Kind Code:
A
Abstract:
To provide a method for industrially advantageously producing pyromellitic acid from 2,4,5-trimethylbenzaldehyde or its oxidized derivative in high yield.
Pyromellitic acid is produced by oxidizing 2,4,5 trimethylbenzaldehyde or its oxidized derivative in a liquid phase in the presence of a catalyst containing bromine, manganese and iron, or additionally germanium by using a water-containing lower fatty acid as a solvent under a specific semibatch reaction condition.
Inventors:
MARUKI IKUTARO
OGOSHI ATSUSHI
OGAWA HIROSHI
TANAKA KAZUO
OGOSHI ATSUSHI
OGAWA HIROSHI
TANAKA KAZUO
Application Number:
JP33285099A
Publication Date:
June 05, 2001
Filing Date:
November 24, 1999
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO
International Classes:
B01J31/30; C07B61/00; C07C51/235; C07C51/265; C07C63/313; (IPC1-7): C07C51/265; B01J31/30; C07B61/00; C07C51/235; C07C63/313
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