Apparatus for manufacturing polycarbonate

Abstract

To provide a manufacturing apparatus with which it is possible to manufacture a polycarbonate that has superior residence stability such as its coloring stability and thermal stability during melt molding, and that has a low content of foreign matter. An apparatus for manufacturing a polycarbonate by the melt polycondensation of a bisphenol and a carbonic diester, wherein said apparatus for manufacturing a polycarbonate is characterized in that: (1) the equipment surfaces that come into contact with the molten raw materials and the reaction product thereof at 250° C. or lower are made of nickel; and (2) the equipment surfaces that come into contact with the molten raw materials and the reaction product thereof above 250° C. are made of stainless steel with a nickel content of 5 to 15% and a chromium content of 10 to 20%.

Dependencies are inferred from the claim text.