Manufacture of isocyanates

Details Manufacture of isocyanates Manufacture of isocyanates

1982-03-05

1983-03-22

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11800

Patent

active

043775306

ABSTRACT:
A process for producing aromatic mono- and polyisocyanates by the addition reaction of isocyanic acid with vinyl aromatics is disclosed. The process is characterized by the slow addition of the olefin to a reaction mass of solvent and isocyanic acid to maintain the isocyanic acid in high excess to unreacted olefin.

REFERENCES:
patent: 3290350 (1966-12-01), Hoover

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