A novel copolycarbonate is provided, which comprises recurring units respectively of the formulae: ##STR1## in a molar ratio of units (A) to units (B) of from 9:1 to 1:9. The copolycarbonate has a number average molecular weight of from 300 to 50,000. The copolycarbonate is useful as a reactive polymer for producing final polymers such as a polyurethane and a thermoplastic elastomer. The copolycarbonate as well as various final polymers produced therefrom have excellent resistance to hydrolysis, light, chlorine, oxidative degradation, heat, etc. The polyurethane and the thermoplastic elastomer containing units of the novel copolycarbonate as soft segments exhibit remarkably improved flexibility and elastic recovery as compared to those of the conventional polymers.
提供了一种新型共聚
碳酸酯,其中包括分别具有以下式子的重复单元:##STR1## 在(A)单元和(B)单元的摩尔比为9:1到1:9。该共聚
碳酸酯的数均分子量为300到50,000。该共聚
碳酸酯可用作反应性聚合物,用于生产最终聚合物,例如聚
氨酯和热塑性弹性体。从该共聚
碳酸酯制备的各种最终聚合物以及该共聚
碳酸酯本身具有优异的抗
水解、光、
氯、氧化降解、热等性能。含有新型共聚
碳酸酯单元作为软段的聚
氨酯和热塑性弹性体相比传统聚合物具有明显改善的柔韧性和弹性恢复性。