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AssigneesNational Institute of Advanced Industrial Science and Technology, Idemitsu Kosan Co., Ltd.
InventorsMasaya Okamoto, Jun-ichi Sugiyama, Mitsuru Ueda
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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.
A process for producing a carbonic ester, the process comprising
A process for producing a carbonic ester, the process comprising reacting an aromatic monohydroxy compound or an aliphatic monohydroxy compound with carbon monoxide and oxygen at a temperature of from 30 to 180° C. in the presence of (a) a palladium compound, (b) a compound having redox catalytic activity, (c) at least one onium salt selected from an onium bromide, an onium chloride, and combinations thereof, and (d) zeolite having a particle diameter of at most 300 μm.
Dependencies are inferred from the claim text.