Process for purifying ethylene glycol carbonate (EGC) by adsorption on activated carbon
AssigneeBayer Aktiengesellschaft
InventorsChristine Mendoza-Frohn, Paul Wagner, Hans-Josef Buysch
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Abstract
Ethylene glycol carbonate (EGC) can be obtained in purified form from contaminated material which contains impurities from the production or work-up process, by subjecting it to treatment with activated carbon. The treatment is carried out at 40.degree.-250.degree. C. and at 1-200 bar. The activated carbon has a BET surface area of 200-3,000 m.sup.2 /g.
Claims17
A process for the continuous or batchwise purification of ethylene glycol carbonate (EGC) containing impurities from the production or work-up process of the EGC, wherein the contaminated EGC is subjected at 40.degree.-250.degree. C. and at 1-200 bar to a treatment with activated carbon having a BET surface area of 200-3,000 m.sup.2 /g.
Dependencies are inferred from the claim text.