Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1980-03-24
1981-10-27
Siegel, Alan
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C07C 5116
Patent
active
042975077
ABSTRACT:
Terephthalic acid with a high purity for direct polymerization with glycols is produced by oxidizing p-tolualdehyde with a gas containing molecular oxygen in water as a solvent in the presence of bromine ions in an oxidation reactor using zirconium as a reactor material.
REFERENCES:
patent: 3012038 (1961-12-01), O'Neill et al.
patent: 3708531 (1973-01-01), Croce et al.
Komatsu Makoto
Ohta Tazuo
Takamizawa Yuji
Mitsubishi Gas Chemical Co. Inc.
Siegel Alan
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