Patent ID: 7417161
Filing Date: 2008-08-26
Classification: C07C

Abstract:
1. A continuous method for the preparation of an aromatic carbonate compound, of or comprising the steps of: providing a heterogeneous catalyst on a carrier in a loop-type reaction apparatus; injecting a dialkyl carbonate or alkyl aryl carbonate compound of and an aromatic hydroxyl compound of formula ArOH, wherein R is alkyl group, and each Ar is an aromatic group having 5 to 30 carbon atoms, into the loop-type reaction apparatus to provide a mixed reaction solution; filtering the mixed reaction solution to provide a filtered solution which is free of the heterogeneous catalyst; heating the filtered solution to a desired reaction temperature; separating high boiling point components and low boiling point components; outputting the low boiling point components in a gaseous form; directing the high boiling point components back to the loop-type reaction apparatus; and outputting the high boiling point components comprising the aromatic carbonate compound.