| 摘要 |
<p>A laminated film comprising (A) a layer of a polymer of 4-methyl-1-pentene, (B) an interlayer of a mixture of (a) a polymer of 4-methyl-1-pentene and ,b) an alpha-olefin copolymer comprising 10 to 85 mole % of propylene units, 3 to 60 mole % of 1-butene units and 10 to 85 mole % of units of an alpha-olefin having at least 5 carbon atoms, the proportions being based on the total amount of the propylene units, the 1-butene units and the other alpha-olefin units, having a crystallinity, determined by X-ray diffractometry, of not mor than 20 %, and (C) a layer of a polyolefin derived from an alpha-olefin having 2 to 4 carbon atoms, as a main component, the layers (A), (B) and (C) being laminated in the order stated.</p> |
