A copolycarbonate having improved flowability and processes for its preparation is disclosed. The molecular structure of the copolycarbonate includes at least one unit derived from at least one dihydroxy compound selected from the group consisting of compounds of formula (1)
in which
R
1
and R
2
each independently of the other represents hydrogen or linear or branched C
1
-C
10
-alkyl, and X represents O or S. preparation of polycarbonates.
本发明揭示了一种具有改善流动性的共聚
碳酸酯及其制备方法。该共聚
碳酸酯的分子结构包括至少一个单元,该单元源自于选择自式(1)化合物的至少一种二羟基化合物,其中R1和R2分别独立地表示氢或线性或支链的C1-C10烷基,X表示O或S。制备聚
碳酸酯。