Process for the reduction of chlorine content of organic isocyanates

A process for the purification of organic isocyanates or isocyanate mixtures in which the amount of chlorine compound(s) present is reduced by mixing the isocyanate(s) or isocyanate mixtures with a gel-type or macroporous, anion-exchanging organic material having tertiary and/or quaternary amino gro...

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Bibliographic Details
Main Authors MAGER, DIETER, LEPS, HARALD, KLIPPER, REINHOLD DR, BRAHM, MARTIN DR, HAUNER,ANDREAS DR, HALPAAP, REINHARD, DANIELMEIER, KARSTEN
Format Patent
LanguageEnglish
French
German
Published 02.01.2004
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:A process for the purification of organic isocyanates or isocyanate mixtures in which the amount of chlorine compound(s) present is reduced by mixing the isocyanate(s) or isocyanate mixtures with a gel-type or macroporous, anion-exchanging organic material having tertiary and/or quaternary amino groups. The process renders possible a purification of the isocyanates from chlorine-containing compounds which is milder than in conventional processes and is therefore particularly suitable for temperature-sensitive isocyanates.
Bibliography:Application Number: EP20000105351