Process for the production of carbonate esters
AssigneeMonsanto Company
InventorsFrank P. Jakse, Donald E. Morris, William Vanderlinde
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Abstract
The invention relates to a process of producing carbonate esters wherein an alkyl chloroformate is reacted with a phenolsulfonate in an alkaline medium and discloses the improvement whereby dialkylcarbonate formation is reduced by adding an acidifying agent to the reaction mixture after the reaction and before precipitation of the alkylsulfophenyl carbonate.
Claims16
In a process for synthesizing an alkylsulfophenyl carbonate having a straight or branched chain alkyl group containing from about 6 to about 12 carbon atoms or a cycloalkyl group containing from about 6 to about 9 carbon atoms wherein an akly chloroformate is reacted with a phenolsulfonate in an aqueous alkaline medium, the improvement comprising adding to said alkaline medium an acidifying agent whereby the reaction mass is neutralized to a pH of about 7 or below while said carbonate is in a said aqueous medium.
Dependencies are inferred from the claim text.