| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a surface protective film having heat resistance, transparency and excellent releasability and to provide a modifier.SOLUTION: There is provided a film comprising a 4-methyl-1-pentene copolymer (A) and a thermoplastic resin (B). The content of the 4-methyl-1-pentene copolymer (A) is 1 mass% or more and less than 70 mass% based on the total mass, the content of the thermoplastic resin (B) is 30 mass% or more and less than 99 mass% based on the total mass and the 4-methyl-1-pentene copolymer (A) satisfies the following [1]. [1] A copolymer containing 97 mol% to 80 mol% of a constitutional unit derived from 4-methyl-1-pentene and 3 mol% to 20 mol% of a constitutional unit derived from a 2-20Cα-olefin (the total of the constitutional unit derived from 4-methyl-1-pentene and the constitutional unit derived from a 2-20Cα-olefin is 100 mol%).</p> |
