Process for the preparation of diaryl carbonates
AssigneeThe Dow Chemical Company
InventorCynthia L. Rand
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Abstract
A process and a catalyst for the homogeneous liquid phase reaction of aromatic haloformates with aromatic hydroxy compounds for the production of diaryl carbonates with the elimination of anhydrous hydrogen halide. The catalysts of the present invention comprise at least one aromatic heterocyclic nitrogen compound. These catalysts permit the production of the products in very high yield, and the reaction proceeds at high rates.
Claims18
A process for the production of a diaryl carbonate comprising contacting an aryl haloformate with a phenolic compound in the presence of a catalytic amount of a catalyst comprising at least one aromatic heterocyclic nitrogen compound which has been activated by at least one hydroxyl substituent.
Dependencies are inferred from the claim text.