Process for the continuous production of aryl carbonates

Details Process for the continuous production of aryl carbonates Process for the continuous production of aryl carbonates

1994-01-18

1995-10-31

Hollrah, Glennon H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbonate esters

558271, 558270, C07C 6996

Patent

active

054631025

ABSTRACT:
Organic carbonates containing at least one aromatic ester group can be obtained in a continuous manner from carbonates containing at least one aliphatic ester group and a phenolic compound in the presence of a transesterification catalyst known per se by carrying out the reaction in at least two stirred containers connected one behind the other in such a way that, in each case, the phenolic compound is metered in liquid form into the first stirred container and the carbonate containing at least one aliphatic ester group is metered in liquid form into one or more of the stirred containers. The carbonate containing at least one aromatic ester group is removed in liquid form from the last stirred container. Volatile reaction products, for example alcohol which has been cleaved out or a dialkyl carbonate are removed in gaseous form from one or more stirred containers.

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Perry's Chemical Engineer's Hanbook, Sixth Edition, McGraw-Hill 1984, pp. 4-24-4-28.

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