Process for the preparation of dialkyl carbonates
AssigneeBayer Aktiengesellschaft
InventorsHans-Josef Buysch, Heinrich Krimm, Hans Rudolph
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Abstract
An improved process for the preparation of a dialkyl carbonate by contacting a glycol carbonate with alcohol at an elevated temperature in the presence of an alkali metal or alkali metal compound, the improvement residing in employing less than 0.01 percent by weight of alkali metal and/or alkali metal compound, based upon the weight the reaction mixture.
Claims9
In a process for the preparation of a dialkyl carbonate by contacting a glycol carbonate of a 1,2-diol having 2 to 4 carbon atoms with an alcohol selected from the group consisting of methanol, ethanol, propanol, isopropanol, n-butanol, iso-butanol, allyl alcohol, amyl alcohol, cyclohexanol, ethylcyclohexanol, benzyl alcohol and methylglycol at an elevated temperature in the presence of an alkali metal or alkali metal compound the improvement which comprises employing less than 0.01 percent by weight of alkali metal or alkali metal compound based upon the weight of the reaction mixture.
Dependencies are inferred from the claim text.