| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface protective film that appropriately protects a surface of a prism sheet (particularly a prism surface) without decreasing efficiency in a work for sticking the surface protective film to the prism sheet surface.SOLUTION: The surface protective film comprises: [1] as the main component of an adhesive, (a) a copolymer (I) that is a hydrogenated copolymer having a structure expressed by formula:[A-B]and (b) a copolymer (II) that is a hydrogenated copolymer having a polymer block (A) described below in at least two terminals and at least one polymer block (B) described below in a middle portion of the copolymer; and [2] as a tackifier, a phenolic resin having a phenol content of 5 to 45% (in terms of a molar ratio). The polymer block (A) is a polymer block including aromatic alkenyl compound units by 80 mass% or more; and the polymer block (B) is a polymer block including conjugate diene compound units by 50 mass% or more. |
