| 摘要 |
<p>A propylene/ethylene random copolymer characterized by: having an ethylene content (EW) of 0.1 to 10 wt.%; satisfying the following relationship between the isolated ethylene content (E1) and the ethylene content (EW): E1 > 0.85 - 0.01EW; having a content of 2,1- and 1,3-propylene units present in the polymer chain of 0 to 1 mol %; having a weight-average molecular weight (MW) of 40,000 to 1,000,000; and having a ratio (MW/Mn) of the weight -average molecular weight (MW) to the number-average molecular weight (Mn) of 1.5 to 3.8. This copolymer is highly random and is suitable for use as a base resin for a molding material giving various moldings excellent in rigidity, heat resistance, transparency etc.</p> |
