Process for producing aromatic polycarboxylic acid

Details Process for producing aromatic polycarboxylic acid Process for producing aromatic polycarboxylic acid

1983-01-03

1985-02-19

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

422240, 422241, C07C 51235, C07C 51265

Patent

active

045007306

ABSTRACT:
An aromatic polycarboxylic acid is produced by oxidation of an alkyl-substituted aromatic aldehyde or carboxyLic acid with molecular oxygen in water as a solvent in the presence of bromine ions or further together with heavy metal ions as a catalyst in a reactor using a zirconium material whose surface is coated with an oxide layer as a material of construction. The oxidation can be carried out in high yield without corrosion of the material of construction.

REFERENCES:
patent: 4297507 (1981-10-01), Komatsu et al.
patent: 4346232 (1982-09-01), Komatsu et al.

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