Preparation of aliphatic isocyanates

C - Chemistry – Metallurgy – 07 – C

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260/456.5

C07C 119/042 (1980.01)

Patent

CA 1159844

O,Z, 0050/034,734 Abstract of the Disclosure: Organic isocyanates are prepared by thermal decomposition of N,N'-disubstituted allophanic acid esters in an organic carbonate at from 150 to 400°C. The isocyanates obtainable by this process are valuable starting materials for the preparation of crop protection agents, pesticides, dyes, synthetic resins, plastics, textile waterproofing agents, detergents, bleaching agents and adhesives.

387503

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