VERFAHREN ZUR HERSTELLUNG VON DI-UND POLYAMINEN DER DIPHENYLMETHANREIHE

VERFAHREN ZUR HERSTELLUNG VON DI-UND POLYAMINEN DER DIPHENYLMETHANREIHE

Preparation of di- and polyamine of diphenylmethane group (I) comprises reacting aniline and formaldehyde in the presence of hydrochloric acid (less than 0.001 wt.%) (containing bivalent and/or higher valency metal ions). An independent claim is also included for the preparation of di- and polyisocy...

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Bibliographische Detailangaben
Hauptverfasser: WERSHOFEN, STEFAN, MUELLER, HEINZ-HERBERT, GRABOWSKI, STEFAN
Format: Patent
Sprache:ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:Preparation of di- and polyamine of diphenylmethane group (I) comprises reacting aniline and formaldehyde in the presence of hydrochloric acid (less than 0.001 wt.%) (containing bivalent and/or higher valency metal ions). An independent claim is also included for the preparation of di- and polyisocyanate of diphenylmethane group comprising preparing (I) and reacting (I) with phosgene.