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US 3,941,873 AGranted
Process for the preparation of carbonyl diisocyanate
AssigneeBayer Aktiengesellschaft
InventorHermann Hagemann
Life of this patent
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Abstract
This invention relates to a process for the preparation of carbonyl diisocyanate, CO(NCO).sub.2, which comprises reacting trichloroisocyanuric acid and/or an alkali metal salt of dichloroisocyanuric acid with phosgene at temperatures of from about 150.degree. to about 200.degree.C.
Claims4
A process for the preparation of carbonyl diisocyanate comprising reacting trichloroisocyanuric acid and/or an alkali metal salt of dichloroisocyanuric acid with phosgene at a temperature of from about 150.degree.C to about 200.degree.C.
Dependencies are inferred from the claim text.