The Dow Chemical Company

Dale A Raines

Oliver C Ainsworth

Alkylene glycols are produced from alkylene carbonates by hydrolysis in the presence of water at temperatures of from about 80.degree. to about 200.degree. C. Catalysts, such as alumina, are employed at temperatures from 80.degree. to about 150.degree. C. and only slightly greater than the stoichiometric amount of water is employed to allow the most efficient use of the process.

Production of monoglycols from alkylene carbonates

An improved process for making ethylene carbonate wherein ethylene oxide and carbon dioxide are passed over an anion exchange resin catalyst and wherein the ethylene oxide and carbon dioxide reactants are absorbed from the effluent of an ethylene oxide reactor, desorbed and used as feed to the ethylene carbonate plant without further purification.

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Wheatridge, CO, United States of America

Dale A Raines