| 摘要 |
<p> The purpose of the present invention is to provide a surface protective film in which, when affixed to various adherends that are flat or have concavities and convexities, self-releasing from an adherend is prevented and acceleration of adhesion in the adhesive layer can be prevented. The surface protective film of the present invention comprises a layered body having a substrate layer and at least one adhesive layer composed of a resin composition characterized in containing 2 to 50 parts by weight of a 4-methyl-1-pentene・α-olefin copolymer (A) that satisfies the conditions (a), (b), (c), and (d) below, and 50 to 98 parts by weight of a thermoplastic resin (B). The copolymer (A) satisfies the conditions of (a) comprising 65 to 90 mol% of a constituent element (i) derived from 4-methyl-1-pentene, and 35 to 10 mol% of a constituent element (ii) derived fromα-olefin; (b) having an intrinsic viscosity [η] in the range of 0.1 to 5.0 dL/g as measured at 135°C in decalin; (c) having a molecular weight distribution (Mw/Mn) in the range of 1.0 3.5; and (d) having a density in the range of 870 to 830 kg/m3.</p> |
