Separating monomers from a residue containing diisocyanate in an apparatus, in which the residue forms a highly viscose liquid and/or non-embrittling solid during the entire retention time in the apparatus, and is forcibly discharged

摘要

Separating monomers from a residue containing diisocyanate in at least an apparatus, in which the residue forms a highly viscose liquid and/or non-embrittling solid during the entire retention time in the apparatus at 210-330[deg]C and less than 300 hPa, and is forcibly discharged from the apparatus.