| abstract |
(57) [Summary] [Object] The present invention relates to a biaxially stretched film, and more specifically, a polystyrene resin having a syndiotactic structure, which is excellent in optical isotropy and is excellent in transparency, heat resistance and moisture resistance. And a biaxially stretched film comprising a polymer exhibiting positive birefringence with orientation and a polarizing plate using the same. [Structure] A biaxially stretched film, wherein the retardation of the film is 100 nm or less. |