METHOD FOR PRODUCING AROMATIC POLYCARBONATE USING HIGH-PURITY DIARYL CARBONATE

摘要

<P>PROBLEM TO BE SOLVED: To provide a high-purity and polymerization-inhibitor free diaryl carbonate of extremely high polymerization reactivity suitable as a raw material for producing an aromatic polycarbonate by a melt transesterification method and reducing the amount of polymerization catalyst to be added, and a method for producing the same. Ž<P>SOLUTION: There are provided: 1. a diaryl carbonate with the content of aromatic monohydroxy compounds reduced to 100 ppm or lower by distillation; and 2. a method for producing a diaryl carbonate characterized by reducing the content of aromatic monohydroxy compounds in a purified diaryl carbonate to 100 ppm or lower upon obtaining the purified diaryl carbonate from the bottom of a distillation column by distilling a crude diaryl carbonate comprising aromatic monohydroxy compounds. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž