Process for decolorizing organic carbonates
AssigneeHuntsman Petrochemical Corporation
InventorsEdward T. Marquis, Robert E. Baldwin
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Abstract
A process for decolorizing organic carbonates, for example, cyclic alkylene carbonates, which involves contacting a discolored organic carbonate with hydrogen peroxide, is disclosed.
Claims25
A process for decolorizing an organic carbonate comprising contacting a discolored organic carbonate with hydrogen peroxide under reaction conditions sufficient to reduce the color of the organic carbonate.
A method of preparing a decolorized organic carbonate composition comprising (a) synthesizing a crude organic carbonate, (b) subjecting the crude organic carbonate to a decolorizing step by contacting the crude organic carbonate with hydrogen peroxide under reaction conditions sufficient to reduce color in the organic carbonate, and (c) optionally, either before or after the decolorizing step, subjecting the organic carbonate to additional purification or separation.
Dependencies are inferred from the claim text.