| 摘要 |
<p>Ethylene polymers are provided which are excellent both in processability in molding, e.g., uniformity of stretching, drawdown resistance, swell, and extrudability, and in mechanical properties, e.g., rigidity, impact resistance, and ESCR. In particular, an ethylene polymer is provided which is extremely superior to those of the prior art in the balance between rigidity and ESCR. Specifically, ethylene homopolymers and copolymers of ethylene and a-olefin having 3 to 20 carbon atoms, characterized by satisfying the following requirements (a) to (d): the melt index (HLMI) determined at 190°C under a load of 21.6 kg is 0.1 to 1000g/10min, the density (d) is 0.935 to 0.985g/cm3, the HLMI and the d value satisfy the relationship (i): (i) the ESCR and the flexural modulus (M) satisfy the relationship (ii): (ii)</p> |
