Verfahren zur kontinuierlichen Herstellung von Polycarbonaten nach dem Schmelzumesterungsverfahren

摘要

Preparation of polycarbonates from oligocarbonates in the melt, by ester exchange of diaryl carbonates with diphenols in the presence of a catalyst. The polycondensation is conducted at high specific surface and a permanent free film formation rate under gravity, using a reactor provided with a rotating circular perforated disk.