Process for trimerizing isocyanic acid to make cyanuric acid
AssigneeAmerican Cyanamid Company
InventorsRonald A. Sills, Daniel S. Katz, Balwant Singh
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Abstract
Isocyanic acid is trimerized to cyanuric acid by contacting the isocyanic acid with liquid organic solvent, preferably polar solvent having high dielectric constant. The product is recovered as precipitate of good purity. Conversion and yield are high.
Claims15
A process of making cyanuric acid which comprises adding isocyanic acid to a liquid organic solvent for isocyanic acid in which solvent said isocyanic acid when absorbed will undergo trimerization reaction to produce cyanuric acid which will precipitate from said solvent, said liquid organic solvent being a polar solvent having dielectric constant greater than 5.
Dependencies are inferred from the claim text.