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Mitsui Petrochemical Industries Ltd
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Mitsui Petrochemical Industries Ltd
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Priority to ES390387ApriorityCriticalpatent/ES390387A3/en
Publication of ES390387A3publicationCriticalpatent/ES390387A3/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A process for the esterification of terephthalic acid by reaction between a lower aliphatic alcohol and terephthalic acid, to form the corresponding ester, which is characterized by reacting 10-30 moles of the alcohol with 1 mole of terephthalic acid, at 230-300ºC and 100 -150 kg/cm2 gauge, in the presence or absence of a catalyst, distill off water and part of the alcohol from the reaction mixture, evaporating them instantaneously, by reducing the pressure to 5-50 kg/cm2 gauge, and maintaining the mixture of reaction remaining at 200-280ºC for a prescribed period of time. (Machine-translation by Google Translate, not legally binding)
ES390387A1971-04-201971-04-20
A PROCEDURE FOR THE ESTERIFICATION OF TEREPHTHAL ACID.
ExpiredES390387A3
(en)