PROCESS FOR EVAPORATING SOLUTIONS WHICH CONTAIN PHOSGENE

Solutions of phosgene, an organic solvent and nitrogen or oxygen compounds which have a higher boiling point than the solvent are evaporated in a vacuum which is produced by a liquid ring pump operated on a phosgene-containing solvent as working fluid, the used working fluid being subsequently retur...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: JOHANNES WERNEBURG, KARL-FRIEDRICH ZENNER, HELMUT KLAPPERT, WALTER LEVIN, WILHELM HAGEN, PETER FISCHER
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Solutions of phosgene, an organic solvent and nitrogen or oxygen compounds which have a higher boiling point than the solvent are evaporated in a vacuum which is produced by a liquid ring pump operated on a phosgene-containing solvent as working fluid, the used working fluid being subsequently returned to the process.