Process for producing diaryl carbonates

Details Process for producing diaryl carbonates Process for producing diaryl carbonates

1997-05-09

1999-01-05

Killos, Paul J.

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

Organic compounds

Carbonate esters

C07C 6800

Patent

active

058565540

ABSTRACT:
The present invention relates to a process for producing diaryl carbonates by the reaction of an aromatic hydroxy compound (e.g. phenol) with carbon monoxide and oxygen in the presence of a catalyst, a co-catalyst, a quaternary salt and a base, which is characterised in that the reaction is conducted in a melt comprising the diaryl carbonate and the hydroxy compound on which the carbonate is based, and further diaryl carbonate is optionally added to this reaction mixture before work-up.

REFERENCES:
patent: 5239106 (1993-08-01), Schafer
patent: 5625091 (1997-04-01), Buysch

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