Process for producing diaryl carbonate

Details Process for producing diaryl carbonate Process for producing diaryl carbonate

1997-09-24

1998-11-10

Ambrose, Michael G.

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

Organic compounds

Carbonate esters

558271, 558272, 558273, C07C 6800

Patent

active

058346155

ABSTRACT:
A high purity diaryl carbonate is produced with a high efficiency by reacting carbon monoxide with an alkyl nitrite and/or an alkyl alcohol; reacting the resultant dialkyl oxalate with a hydroxyaryl compound, for example, phenol; decarbonylating the resultant diaryl oxalate to produce a diaryl carbonate and carbon monoxide; and collecting the diaryl carbonate from the decarbonylation reaction product mixture, the carbon monoxide produced in the decabonylation step being optionally reused for the production of the dialkyl oxalate.

REFERENCES:
patent: 4012406 (1977-03-01), Buysch et al.
patent: 4544507 (1985-10-01), Foley
patent: 4874888 (1989-10-01), Shiomi et al.
patent: 5210268 (1993-05-01), Fukuoka et al.
patent: 5648510 (1997-07-01), Harada et al.

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