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Application filed by Institutul De Chimie Macromoleculară "Petru Poni"filedCriticalInstitutul De Chimie Macromoleculară "Petru Poni"
Priority to RO95-01251ApriorityCriticalpatent/RO118423B1/en
Publication of RO118423B1publicationCriticalpatent/RO118423B1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
The invention relates to a process for recovering dicarboxylic acids resulting as waste in the preparation of adipic acid, by adding alcohols having from 1 to 12 carbon atoms and water. The resulting mixture is heated up to a temperature of 40° C while stirring and then is treated with H2S in order to remove anorganic salts by settling. The resulting solution is heated in order to remove the free water and synthesis water as azeotrope or by vacuum distillation.
RO95-01251A1995-06-301995-06-30Process for recovering dicarboxylic acids
RO118423B1
(en)