METHOD FOR PREPARING POLYCONDENSATION RESIN

摘要

PURPOSE: A polycondensation resin manufacturing method is provided to efficiently prepare a high quality polycondensation resin that is not damaged by fusions between lower order condenstates themselves or scaling in a pipe of the lower order condensates. CONSTITUTION: A polycondensation resin manufacturing method including a process of solid polymerizing a crystalline pulverulent body of a lower order condensate, wherein the method comprises the following steps of: preparing the crystalline pulverulent body of a lower order condensate; mixing the obtained crystalline pulverulent body of a lower order condensate and a granular molding body of a thermoplastic resin; and solid-polymerizing 'the pulverulent body of a lower order condensate and the granular molding body of the thermoplastic resin'. A mixed amount of the granular molding body of the thermoplastic resin is 0.1 to 10wt% based on the crystalline pulverulent body of a lower order condensate.