Method for producing isocyanates

Details Method for producing isocyanates Method for producing isocyanates

2006-06-20

2006-06-20

Zucker, Paul A. (Department: 1621)

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

Organic compounds

Isocyanate esters

Reexamination Certificate

active

07064233

ABSTRACT:
In a process for preparing isocyanates by reacting the corresponding primary amines with phosgene in an inert solvent, use is made of from 0.01 to 50 mol % of a sulfoxide, a sulfone or a mixture thereof, based on the total amount of primary amine and isocyanate formed in the reaction solution.

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H. Ulrich, Chemistry & Technology of Isocyanates, Wiley & Sons, 1996, pp. 328-330.
Abstract 262 295.
Derwent Abst. 2001-357028/38.

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