Novel branched polycarbonates having (1) intrinsic viscosity [η], (2) branching parameter G and (3) degree of branching λ in certain ranges are disclosed. Further, novel branched polycarbonates having (4) taking-off parameter A in addition to the above (1) to (3) is in a certain range are, also disclosed.
Such novel branched polycarbonates are effective as raw materials for various moldings, particularly blow moldings such as large-sized blow moldings.
本发明公开了具有(1)固有粘度[η]、(2)支化参数 G 和(3)支化度 λ 在一定范围内的新型支化聚
碳酸酯。此外,还公开了除上述(1)至(3)之外,(4)起飞参数 A 在一定范围内的新型支化聚
碳酸酯。
此类新型支化聚
碳酸酯可有效用作各种模塑的原材料,尤其是吹塑模塑,如大型吹塑模塑。