Process for the preparation of dialkyl carbonates

Details Process for the preparation of dialkyl carbonates Process for the preparation of dialkyl carbonates

1992-02-12

1993-06-08

Prescott, Arthur C.

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

Organic compounds

Carbonate esters

568867, C07C 6800, C07C 6806, C07C 6996, C07C 2909

Patent

active

052181359

ABSTRACT:
A process for the preparation of dialkyl carbonates is described in which an alkylene carbonate is first formed from alkylene oxides and CO.sub.2 and this alkylene carbonate is then transesterified with alkanols. Both reaction steps are carried out in the presence of a bifunctional catalyst of the formula

REFERENCES:
patent: 3535341 (1970-10-01), Emmons et al.
patent: 3535342 (1970-10-01), Emmons
patent: 3896090 (1975-07-01), Maximovich
patent: 4181676 (1980-01-01), Buysch et al.
patent: 4434105 (1984-02-01), Buysch et al.

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