THERMOPLASTIC POLYMER COMPOSITIONS AND SHEET-SHAPED MOLDINGS MADE THEREFROM

摘要

Provided are sheet-shaped moldings with excellent surface smoothness, moldability and flexibility and with high short wavelength light transmittance, and thermoplastic polymer compositions that provide the same. The thermoplastic polymer compositions comprise an acrylic block copolymer (A) of a specific weight average molecular weight range and an acrylic resin (B) configured mainly of methacrylate ester units at a mass ratio [(A)/(B)] of 97/3-10/90. The block copolymer (A) comprises a block copolymer (A1) and a block copolymer (A2) that have at least one structure in the molecule wherein polymer blocks (a2) of mainly methacrylate ester units are bound to both ends of a polymer block (a1) of mainly acrylate ester units, the content of the polymer block (a2) is 40-80 mass% of the block copolymer (A1) and the content of the polymer block (a2) is 10-40 mass% of the block copolymer (A2).