Process for the isolation and removal of unwanted water from a c

Details Process for the isolation and removal of unwanted water from a c Process for the isolation and removal of unwanted water from a c

1998-09-25

1999-06-29

Ambrose, Michael G.

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

Organic compounds

Carbonate esters

558271, C07C 6800

Patent

active

059170786

ABSTRACT:
An improved continuous process for removal of water from a process for producing organic carbonates, particularly diphenyl carbonate, by treating the water containing products of the reaction with a condensable stripping agent in a gaseous state and recycling a major portion of the water poor reaction products back to the reaction for producing the organic carbonate. The stripping agent, preferably n-pentane, is condensed upon removal from the water stripping step and recycled back to the water stripping step.

REFERENCES:
patent: 5399734 (1995-03-01), King, Jr. et al.
patent: 5498742 (1996-03-01), Buysch et al.
patent: 5625091 (1997-04-01), Buysch et al.

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