Patent ID: 6657039
Filing Date: 2003-12-02
Classification: B01J,C08G

Abstract:
Polymerization equipment for preparing highly polymerized aromatic polycarbonate by polycondensation of prepolymers that are produced by melt transesterification of carbonate ester and diol compounds, said polymerization equipment comprising:a) a horizontal tubular reactor comprising: i) a cylindrical housing; ii) a shaft rotatably installed inside said cylindrical housing; iii) a plurality of rotating disks installed vertically and affixed to said shaft; iv) a plurality of compartments divided by said rotating disks; v) a plurality of inert gas injection pipes for injecting preheated inert gas into each compartment; vi) a plurality of vents installed on top of said housing for discharging by-products and inert gas; vii) a prepolymer feeding inlet installed on one side of said housing for injecting prepolymer into the housing; viii) an outlet installed on the other side of said housing for discharging polymer product; and ix) heating means located on the outer circumference part of said housing for heating the housing; and b) an inert gas preheater installed in connection with said a) v) inert gas injection pipes.