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ETAT FRAAAIS REPRESENTADO POR
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ETAT FRAAAIS REPRESENTADO POR
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Publication of ES264775A1publicationCriticalpatent/ES264775A1/en
B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01D—SEPARATION
B01D11/00—Solvent extraction
B01D11/04—Solvent extraction of solutions which are liquid
B01D11/0488—Flow sheets
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Chemical & Material Sciences
(AREA)
Chemical Kinetics & Catalysis
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Process for the preparation of trimethylolpropane, characterized in that trimethylolpropane is separated from a synthesis solution obtained by the action of formaldehyde on butyraldehyde in the presence of a base and in aqueous solution, whose pH is adjusted to a value comprised between 5 and 7. proceeding, after having removed the excess of formaldehyde, to a countercurrent liquid-liquid extraction of this synthesis solution, with the aid of a water-immiscible organic solvent of trimethylolpropane, thus obtaining an organic phase containing the trimethylolpropane and which is free of mineral salts, such as the metal formate from the synthesis reaction, from which the solvent is evaporated, which is eventually recycled, and the organic impurities from the synthesis are separated by evaporation, and finally the trimethylolpropane. (Machine-translation by Google Translate, not legally binding)
ES0264775A1960-01-301961-02-10Procedure for the preparation of timetilopropan (Machine-translation by Google Translate, not legally binding)
ExpiredES264775A1
(en)
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