| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optically isotropic acrylic resin film which is excellent in transparency, heat resistance, toughness and optical isotropy and exhibits durability to environmental changes such as high temperature and high humidity. <P>SOLUTION: The optically isotropic acrylic resin film contains a thermoplastic copolymer (i) containing a lactone ring-containing monomer unit and has (a) ≥120°C glass transition temperature, (b) ≥10% tensile elongation at break and (c) ≤10 nm absolute value of in-plane retardation (Re) and ≤10 nm absolute value of thickness retardation (Rth). <P>COPYRIGHT: (C)2009,JPO&INPIT |
