Invention Grant
US09447235B2 Polycarbonate manufacturing method and polycarbonate 有权
聚碳酸酯制造方法和聚碳酸酯

Polycarbonate manufacturing method and polycarbonate
Abstract:
The present invention relates to a method of producing polycarbonate containing following step (a) and step (b), (a) a step of reacting a specific fluorine-containing carbonate (Compound (1), etc.) and an aromatic dihydroxy compound in the presence of a condensation catalyst, to obtain a prepolymer, and (b) a step of heating the prepolymer at a temperature which is lower than a melting temperature of the prepolymer and performing solid phase polymerization on the prepolymer while a fluorine-containing alcohol that is produced as a by-product is discharged out of a system, to obtain a polycarbonate.
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