Process for the removal of isocyanic acid from a mixture of isoc

Details Process for the removal of isocyanic acid from a mixture of isoc Process for the removal of isocyanic acid from a mixture of isoc

1990-07-12

1992-01-07

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423237, 423238, 423365, C01C 300, C01C 314, C01B 2112

Patent

active

050789805

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.

REFERENCES:
patent: 1887608 (1932-11-01), Wettstein
patent: 3752880 (1973-08-01), Stamm et al.
patent: 4398036 (1983-08-01), McCoy et al.
Chemical Abstracts, vol. 82, 173135u, p. 129 (1975).
Chemical Abstracts, vol. 81, 172444m, p. 178 (1974).
Beilsteins Handbuch der Organischen Chemie, 4th Edition, vol. 3, p. 33.
Beilsteins Handbuch der Organischen Chemie, 4th Edition, vol. 4, p. 101.

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