A polycarbonate having excellent color and stability and a production process therefor.
In the production of a polycarbonate by melt polycondensing a dihydroxy compound and a carbonic acid diester in the presence of an ester exchange catalyst, the each content of an aldehyde group in the dihydroxy compound and the carbonic acid diester is reduced to 3×10
−6
equivalent/mol or less.
一种具有优异色泽和稳定性的聚
碳酸酯及其生产工艺。
在酯交换催化剂存在下,通过熔融缩聚二羟基化合物和
碳酸二酯生产聚
碳酸酯时,二羟基化合物和
碳酸二酯中醛基的各含量降低到 3×10
-6
当量/摩尔或更少。