FOERFARANDE FOER FRAMSTAELLNING AV IMINODIBENZYL

1. Process for the preparation of iminodibenzyl of the formula (I) see diagramm : EP0158115,P5,F2 by heating 2,2'-diaminodibenzyl of the formula (II) see diagramm : EP0158115,P5,F3 with phosphoric acids in the molten state, characterized in that reaction is carried out continuously in several s...

Full description

Saved in:
Bibliographic Details
Main Authors STERN, GERHARD, RAML, WALTER, SAISCHEK, GERALD
Format Patent
LanguageFinnish
Published 10.04.1985
Edition4
Subjects
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary:1. Process for the preparation of iminodibenzyl of the formula (I) see diagramm : EP0158115,P5,F2 by heating 2,2'-diaminodibenzyl of the formula (II) see diagramm : EP0158115,P5,F3 with phosphoric acids in the molten state, characterized in that reaction is carried out continuously in several stages, wherein a) molten 2,2'-diaminodibenzyl and a phosphoric acid, each of which has a temperature of between 160 and 200 degrees C, are fed separately in a molar ratio of diaminodibenzyl : P2 O5 of 1 : 1 to 1 : 2.5 into the first stage, the neutralization takes place there, with evolution of heat, and the condensation is carried out in the subsequent reaction stages at a temperature of 260 degrees C to 320 degrees C, after which b) the uncooled reaction mixture from the last stage is transferred continuously into a heated separator and is separated at 160 degrees C to 300 degrees C into a product stream containing the upper phase of molten iminodibenzyl and a discharge stream containing, as the lower phase, phosphoric acid and ammonium phosphates.
Bibliography:Application Number: FI19850001416