PROCESS FOR THE SIMULTANEOUS PRODUCTION OF DIFFERENT MIXTURES OF DIISOCYANATE ISOMERS OF THE DIPHENYLMETHANE SERIES

PROCESS FOR THE SIMULTANEOUS PRODUCTION OF DIFFERENT MIXTURES OF DIISOCYANATE ISOMERS OF THE DIPHENYLMETHANE SERIES

Process for the simultaneous and continuous production of two different mixtures of predominantly 4,4'-MDI and 2,4'-MDI in a single-step suspension melt crystallisation process whereby a mixed diisocyanate feed stream [MIx] is used to produce simultaneously two mixed diisocyanate streams [...

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Bibliographische Detailangaben
Hauptverfasser: KOOLE, JOHANNES LODEWIJK, ZIJL, ADOLF DAAN, CARR, ROBERT HENRY
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:Process for the simultaneous and continuous production of two different mixtures of predominantly 4,4'-MDI and 2,4'-MDI in a single-step suspension melt crystallisation process whereby a mixed diisocyanate feed stream [MIx] is used to produce simultaneously two mixed diisocyanate streams [MIy and MIz] wherein x is 8 to 20, y is 1 to 3 and z is 20 to 40 where x, y and z are percentages by weight of the 4,4'-diphenylmethane diisocyanate isomer contained in the diphenylmethane diisocyanate isomer mixture.