Manufacturing method of solid-phase polymerization for polycarbonate prepolymer and polycarbonate

摘要

A solid-phase polymerization of polycarbonate prepolymer aromatic dihydroxy compound and was prepared monohydric phenol 330 ℃ below, by oxidative carbonylation reaction with carbon monoxide and oxygen boiling point, in (a) of end groups in 8 to 8: 2 ratio of hydroxyl groups and aryl carbonate groups occupied by 2, (b) a molecular weight distribution (Mw / Mn) and phase polymerization polycarbonate prepolymer is a solid 1.1 to 2.1, the prepolymer I to provide a process for the production of polycarbonate to high molecular weight by solid-phase polymerization. In accordance with the present invention, it is possible to provide a prepolymer which is suitable for solid state polymerization of controlled molecular weight distribution is produced with good efficiency while environmentally friendly high-quality polycarbonate.