High molecular weight aromatic polycarbonate resin manufacturing method

A process for producing a high molecular weight aromatic polycarbonate resin which comprises:

• mixing a dialcohol compound represented by formula (1) and a catalyst to obtain a catalyst composition, wherein the dialcohol compound contains an aromatic ring,
• transferring the obtained catalyst composition to a prepolymer mixing tank through a transfer pipe, wherein the transfer pipe has a double tube structure including an inner tube and an outer tube, the catalyst composition flows in the inner tube and a heating medium flows in the outer tube,
• mixing the transferred catalyst composition and an aromatic polycarbonate prepolymer in the prepolymer mixing tank under a pressure of not lower than a vapor pressure of the dialcohol compound at a temperature of the prepolymer mixing tank and not higher than 5 MPa, to obtain a prepolymer mixture, and
• increasing a molecular weight of the prepolymer by subjecting the obtained prepolymer mixture to heat treatment under a reduced pressure to obtain a high molecular weight aromatic polycarbonate resin:
• wherein, in formula (1), R1 to R4 each independently represents a hydrogen atom, a halogen atom, or a linear or branched alkyl group having 1 to 5 carbon atoms;
• and Q represents a single bond or a substituted or unsubstituted divalent group comprising at least one member selected from the group consisting of an aliphatic group, an aromatic group, an oxygen atom, a sulfur atom, a sulfone group, a sulfoxide group, a carbonyl group, a dialkylsilyl group, and a diarylsilyl group.