Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1983-11-29
1986-06-10
Trousof, Natalie
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562413, C07C 51265
Patent
active
045944490
ABSTRACT:
A process for producing terephthalic acid suitable for use in direct polymerization, which comprises oxidizing p-xylene with molecular oxygen in an acetic acid solvent in the presence of a heavy metal compound and a bromine compound, wherein after a main reaction step of oxidizing at least 90 mole % of p-xylene fed has been performed,
REFERENCES:
patent: 3387027 (1968-06-01), Alagy
patent: 3859344 (1975-01-01), Shigeyasu et al.
patent: 4212995 (1980-07-01), Shiraki
patent: 4286101 (1981-08-01), Hashizume et al.
Murakami Katsuya
Nakajima Yasue
Takuma Toshiaki
Tsugiya Takanori
Tsumura Takayuki
Kuraray Yuka Co., Ltd.
Scott Patricia M.
Trousof Natalie
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