Process for the preparation of isocyanates in the gas phase

Details Process for the preparation of isocyanates in the gas phase Process for the preparation of isocyanates in the gas phase

2007-12-11

2009-11-10

Witherspoon, Sikari A (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Isocyanate esters

C560S352000

Reexamination Certificate

active

07615662

ABSTRACT:
Isocyanates are produced by reaction of primary amines with phosgene in the gas phase. In this process, the reaction is terminated by guiding the reaction mixture from the reaction chamber through a cooling stretch into which liquids are injected. Direct cooling takes place in the cooling stretch in one stage in two or more cooling zones connected in series.

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