| 摘要 |
Provided are: a thermoplastic polymer composition which has good moldability, flexibility, rubber elasticity, scratch resistance, abrasion resistance, transparency when formed into a sheet or a film, ease of coating and mechanical properties; a sheet or a film which is produced using the thermoplastic polymer composition; and a multi-layered film. The thermoplastic polymer composition comprises (I) a block copolymer which has a polymer block (A) mainly composed of an α-methylstyrene unit and a polymer block (B) mainly composed of a conjugated diene compound unit or an isobutylene unit and has a number average molecular weight of 30,000 to 200,000, or a hydrogenated product of the block copolymer, (II) an acrylic polymer and (III) a softening agent at a ratio that satisfies formulae (1) and (2) as mentioned in claim 1. The thermoplastic polymer composition has such an islands-in-sea structure that the component (II) is dispersed in the form of particles in a continuous phase composed of the component (I), wherein dispersed particles composed of the component (II) have an average dispersed particle diameter of 200 nm or less, and dispersed particles each having a dispersed particle diameter of less than 60 nm make up 35 mass% or more of the dispersed particles. |
