ABSTRACT
This review is sequel of PEP Review 01-06. We present a review of technology
on conversion of ethylene carbonate to diphenyl carbonate via dimethyl carbonate
reported in patents assigned to Asahi Chemical. This review also presents
a technoeconomic evaluation of this technology, based on the available public
information.
Also presented is economic comparison between the present process and those
of two other DPC processes - DPC from phenol by direct phosgenation, and DPC
from DMC by carbonylation. We conclude that the present process requires relatively
lower capital investment than the latter two processes. However, high costs
of raw materials, cost of ethylene carbonate in particular, make DPC product
value of the present process less competitive against the other two processes.
