| 摘要 |
<p>An ethylene/aromatic vinyl copolymer characterized by satisfying the following: (1) It has an aromatic vinyl content of 0.5 to 10 mol%; (2) It gives a 0.2 mm-thick molding which has a haze of 14% or lower or a total light transmittance of 90 % or higher; (3) It satisfies the following relationship (1) between the aromatic vinyl content and the glass transition point (Tg) which is determined by the inflection point method and is observed with a differential scanning calorimeter (DSC) at temperatures not lower than -50 °C: -20 + 1.00St > Tg > -30 + 1.05St relationship (1) wherein St represents the aromatic vinyl content of the copolymer (mol%); (4) It has a weight-average molecular weight of 140,000 to 500,000 when the aromatic vinyl content is 5 to 10 mol%, and of 60,000 to 500,000 when the aromatic vinyl content is 0.5 to 5 mol%, excluding 5 mol%.</p> |
