| 摘要 |
PROBLEM TO BE SOLVED: To provide a propylene-ethylene random copolymer with reduced flexibility, transparency and low molecular weight contents. SOLUTION: This propylene-ethylene random copolymer has an ethylene content higher than 5 mol% and not higher than 20 mol%, a heat quantity (ΔH) of fusion of 10-50 J/g and a weight average molecular weight (Mw) of the boiling heptane soluble part of >=200,000. |
