Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1980-08-11
1982-08-24
Siegel, Alan
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C07C 51255
Patent
active
043462324
ABSTRACT:
Aromatic polycarboxylic acids are produced in high yield by oxidation of polyalkyl-substituted aromatic aldehydes or polyalkyl-substituted aromatic carboxylic acids with molecular oxygen in water as a solvent in the presence of metal ions of manganese or cerium and a bromine ion-liberating compound as a catalyst, while keeping an oxygen concentration of effluent gas from reactor at least at 3%.
REFERENCES:
patent: 2962361 (1960-11-01), Spiller et al.
patent: 3157691 (1964-11-01), Keith
patent: 3584038 (1971-06-01), Barone et al.
patent: 3678106 (1972-07-01), Ager
Fujita Hideaki
Komatsu Makoto
Tanaka Toru
Mitsubishi Gas Chemical Company Inc.
Siegel Alan
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