Process for the removal of isocyanic acid from a mixture of isocyanic acid and ammonia
AssigneeChemie Linz Gesellschaft m.b.H.
InventorsMartin Mullner, Gerhard Stern, Erich Schulz
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Abstract
Process for the removal of isocyanic acid from a gaseous mixture of isocyanic acid and ammonia by introducing a tertiary amine or ether at 250.degree. to 600.degree. C. The gaseous reaction mixture is passed into an inert diluent and cooled, to condense an adduct of isocyanic acid and tertiary amine or ether, and the ammonia being removed as a gas.
Claims9
A process for the removal of isocyanic acid from a gaseous mixture of isocyanic acid and ammonia comprising introducing a tertiary amine or an ether into a gaseous mixture of isocyanic acid and ammonia at a temperature of 250.degree. to 600 .degree. C. and introducing the resulting gaseous reaction mixture into a diluent which is inert under the reaction conditions, and cooling the reaction mixture whereby an adduct of isocyanic acid and tertiary amine or ether condenses.
Dependencies are inferred from the claim text.