| abstract |
PROBLEM TO BE SOLVED: To find an inhibitor for quenching catalytically active impurities in polycarbonate, which is not corrosive and has low volatility, and its use in a process for producing polycarbonate. In a melt transesterification process for the preparation of polycarbonate, including a medium viscosity reactor and a high viscosity reactor, the improvement includes adding at least one crosslinked ester of an organic sulfur-containing acid to the process between the reactors. , Melt transesterification. [Selection figure] None |