| 摘要 |
The present invention relates to a manufacturing method of polycarbonate, a polycarbonate polymer solution, and an apparatus for manufacturing polycarbonate. The manufacturing method of polycarbonate, according to an embodiment of the present invention, is allowed to provide a polycarbonate polymer solution having little tetrachloromethane and chloroethane or no tetrachloromethane and chloroethane by purifying and using re-used dichloromethane solvent as a distillation column. In the present invention therefore, re-using solvent of the manufacture method of the polycarbonate is allowed to minimize process cost and environment pollution and manufacture polycarbonate polymer solution having little tetrachloromethane and chloroethane or no tetrachloromethane and chloroethane, leading to the reduction of energy consumption in a drying process of polymer solution and increasing the productivity of polycarbonate over the same energy consumption. |
