ES245871A1 - Process to separate isofaceal and thereftal acids of mixtures containing a larger portion of the first and a lower portion of the second (Machine-translation by Google Translate, not legally binding)
- Google Patents
Process to separate isofaceal and thereftal acids of mixtures containing a larger portion of the first and a lower portion of the second (Machine-translation by Google Translate, not legally binding)
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Standard Oil Development Co
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Standard Oil Development Co
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Application filed by Standard Oil Development CofiledCriticalStandard Oil Development Co
Priority to ES0245871ApriorityCriticalpatent/ES245871A1/en
Publication of ES245871A1publicationCriticalpatent/ES245871A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Process for separating isophthalic and terephthalic acids from mixtures containing a greater portion of the former and a minor portion of the latter, whose process comprises the formation of a solution of the acid mixture, supersaturation of the solution with respect to isophthalic acid by cooling to a controlled rate in order to establish the nucleation of that in the solution, but without substantial precipitation of crystals thereof, cooling of the solution to effect the crystallization of the acids and separation, of the resulting crystalline mass, of a fraction of large crystals, relatively, enriched in isophthalic acid and a fraction of relatively small crystals enriched in tephthalic acid. (Machine-translation by Google Translate, not legally binding)
ES0245871A1958-12-101958-12-10Process to separate isofaceal and thereftal acids of mixtures containing a larger portion of the first and a lower portion of the second (Machine-translation by Google Translate, not legally binding)
ExpiredES245871A1
(en)
Process to separate isofaceal and thereftal acids of mixtures containing a larger portion of the first and a lower portion of the second (Machine-translation by Google Translate, not legally binding)
Process to separate isofaceal and thereftal acids of mixtures containing a larger portion of the first and a lower portion of the second (Machine-translation by Google Translate, not legally binding)
Process to separate isofaceal and thereftal acids of mixtures containing a larger portion of the first and a lower portion of the second (Machine-translation by Google Translate, not legally binding)
A procedure for continuous recovery of p-xylene from liquid mixtures containing p-xylene. (Machine-translation by Google Translate, not legally binding)
Process to separate isofaceal and thereftal acids of mixtures containing a larger portion of the first and a lower portion of the second (Machine-translation by Google Translate, not legally binding)
A procedure for the separation and purification of at least one component of a liquid mixture of multiple components. (Machine-translation by Google Translate, not legally binding)
A new procedure for the preparation of calcium tiosulfate to increase its stability during its preparation, as well as its dissolutions (Machine-translation by Google Translate, not legally binding)
A continuous procedure for the separation of cyclohexane from a fraction of isoheptanes containing cyclohexane (Machine-translation by Google Translate, not legally binding)
A procedure to produce crystalline urea from low content of biuret by washing urea crystals. (Machine-translation by Google Translate, not legally binding)