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US 5,360,601 AGranted
Process for the preparation of isocyanic acid by the decomposition of N,N-disubstituted ureas
AssigneeChemie Linz Gesellschaft m.b.H.
InventorsKurt A. Hackl, Martin Mullner, Erich Schulz, Gerhard Stern, Heinz Falk
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Abstract
A process for the preparation of isocyanic acid, characterized in that N,N-disubstituted ureas are decomposed at elevated temperature to a secondary amine of lower volatility and to isocyanic acid, which is drawn off at the top.
Claims6
A process for the preparation of isocyanic acid, which comprises decomposing an N,N-disubstituted urea in a reaction vessel at elevated temperature to a secondary amine of lower volatility and to isocyanic acid, which is drawn off at the top of said vessel.
Dependencies are inferred from the claim text.