"processo para a preparação contínua de isocianatos"

The present invention relates to a process for the production of isocyanates, preferably diisocyanates and polyisocyanates of the diphenylmethane series (MDI), by reacting an amine with phosgene in the liquid phase or in the gas phase to form the corresponding isocyanates, subsequent removal of the...

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Bibliographic Details
Main Authors ECKHARD STROEFER, ULRICH PENZEL, MATTHIAS EIERMANN, MICHAEL BOCK, HEINER SCHELLING, JON S. SPEIER, KAI THIELE
Format Patent
LanguagePortuguese
Published 19.04.2016
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The present invention relates to a process for the production of isocyanates, preferably diisocyanates and polyisocyanates of the diphenylmethane series (MDI), by reacting an amine with phosgene in the liquid phase or in the gas phase to form the corresponding isocyanates, subsequent removal of the solvent in at least two steps to obtain at least two solvent streams, individual treatment of the at least two solvent streams, and recirculation of at least a portion of the solvent streams.
Bibliography:Application Number: BR2010PI15061