AMORPHOUS THERMOPLASTIC RESIN AND EXTRUDED FILM OR SHEET

摘要

Disclosed is an amorphous thermoplastic resin exhibiting high transparency and high heat resistance while having ultraviolet absorbing ability. This amorphous thermoplastic resin can be used for various optical materials which are required to have a good balance among mechanical strength, moldability, surface hardness and the like, while having excellent optical characteristics. Also disclosed is a film or a sheet. Specifically disclosed is an amorphous thermoplastic resin containing an ultraviolet absorptive monomer unit and having a glass transition temperature of not less than 120°C. This amorphous thermoplastic resin has a light transmittance at 500 nm of not less than 80% and a light transmittance at 380 nm of less than 30%.