| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a bischloroformate compound, improving productivity, a polycarbonate oligomer having a small number of monomers, and a solution containing the bischloroformate compound. <P>SOLUTION: The bischloroformate is represented by formula 1: ClCO-(-O-Ar-O-CO-)<SB>n</SB>-Cl and has an average number of monomers (n) of ≤1.99. The bischloroformate is produced by mixing a bivalent phenolic compound represented by formula 2: HO-Ar-OH, a phosgene compound and an aliphatic tertiary amine using a hydrophobic organic solvent. In formulas 1 and 2, Ar is bivalent aromatic group. <P>COPYRIGHT: (C)2011,JPO&INPIT |
