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BASF SE
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BASF SE
Badische Anilin and Sodafabrik AG
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Application filed by BASF SE, Badische Anilin and Sodafabrik AGfiledCriticalBASF SE
Publication of ES227964A1publicationCriticalpatent/ES227964A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Process for the preparation of terephthalic acid by heating salts of benzolcarbonic acids, optionally in the presence of carbon dioxide pressure, at temperatures above 300º and separation of terephthalic acid by acidification, characterized in that, after heat treatment, the reaction product is dissolved in water, the solution, if appropriate after filtration, is added with the benzolecarbonic acid which serves as starting material, for example, with benzoic acid, phthalic acid or its anhydrides, advantageously hot and is separated off. The terephthalic acid. (Machine-translation by Google Translate, not legally binding)
ES0227964A1955-05-041956-04-16A procedure for the obtaining of tereftºlico acid. (Machine-translation by Google Translate, not legally binding)
ExpiredES227964A1
(en)
Procedure for the obtaining of salts of aromatic dicarboxiflic acids, especially of tereftal acid (Machine-translation by Google Translate, not legally binding)