Processes for producing carbonic ester and producing...

Details Processes for producing carbonic ester and producing... Processes for producing carbonic ester and producing...

2003-03-27

2009-10-06

Wilson, James O (Department: 1624)

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

Organic compounds

Carbonate esters

C558S277000

Reexamination Certificate

active

07598411

ABSTRACT:
A process for producing a carbonic ester, characterized in that an aromatic monohydroxy compound or an aliphatic monohydroxy compound is subjected to oxidative carbonylation with carbon monoxide and oxygen in the presence of a palladium catalyst using a compound having a carbonate bond as a reaction solvent. A process for producing a polycarbonate, characterized in that an aromatic dihydroxy compound or an aliphatic dihydroxy compound is subjected to oxidative carbonylation with carbon monoxide and oxygen in the presence of a palladium catalyst using a compound having a carbonate bond as a reaction solvent is also described. The carbonic ester can be produced with a higher yield and at a higher reaction rate and, also, a polycarbonate having a higher molecular weight as compared with the conventional method can be produced with a higher yield and at a higher reaction rate.

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