Method for producing terephthalic acid
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United States of America Patent
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Jun 23, 2015
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N/A
app pub date -
Sep 17, 2014
filing date -
Mar 21, 2014
priority date (Note) -
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Abstract
A method for producing terephthalic acid comprises the steps of: subjecting methyl acrylate to contact with aluminum chloride so as to form a complex; adding isoprene to the complex to result in a Diels-Alder reaction which is kept at a temperature no higher than 50° C. by cooling so as to obtain a cyclic adduct product; subjecting the cyclic adduct product to separation so as to obtain a cyclic para-precursor; and subjecting the cyclic para-precursor to a chemical reaction so as to obtain terephthalic acid.
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