METHOD FOR PRODUCING ISOCYANATES

Abstract: the invention relates to a method for producing isocyanates by reacting at least one amine or the salt thereof with a stoichiometric excess of phosgene in the condensed phase in the presence of a solvent, having the steps of: a) transitioning to a hot phosgenation process and b) expelling remaining phosgene and/or hydrogen chloride. the invention is characterized in that the reaction is carried out in batches in at least two reactors which are arranged parallel to one another and in that step a) and/or step b) is carried out asynchronously in at least two of the reactors arranged parallel to one another.

Inventor(s): Mark Jacob, Guido Grommes, Thomas Schmitz, Pascal Scherpian, Christian Jens, Michael Merkel, Stefanie Lang

CPC Classification: C07C263/10 (ACYCLIC OR CARBOCYCLIC COMPOUNDS)

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