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Glanzstoff AG
Vereinigte Glanzstoff Fabriken AG
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Glanzstoff AG
Vereinigte Glanzstoff Fabriken AG
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Application filed by Glanzstoff AG, Vereinigte Glanzstoff Fabriken AGfiledCriticalGlanzstoff AG
Publication of ES269458A1publicationCriticalpatent/ES269458A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A process for the purification of dimethyl terephthalate, characterized by treating the dimethyl ester of crude terephthalic acid, heated to a temperature above its melting point, with dry, reheated steam, of at least the same temperature as the melted dimethyl terephthalate, after which the water vapor is mixed with vapor of dimethyl terephthalate, then crystallizing the dimethyl terephthalate condensate in pure form and then separating it from the liquid condensate. (Machine-translation by Google Translate, not legally binding)
ES0269458A1960-08-091961-07-29Procedure for the purification of dimetilo tereftalate (Machine-translation by Google Translate, not legally binding)
ExpiredES269458A1
(en)
A process for determining rough dimethyl terthtalate obtained by depolimerization of polyethylene therethalate (Machine-translation by Google Translate, not legally binding)
Continuous procedure for the preparation of very pure colorless maleic anhydride by dehydration of malleeic acid (Machine-translation by Google Translate, not legally binding)