| 摘要 |
The present invention relates to: a copolymer comprising repeating units (I) and (II) in its molecule, wherein the content of the repeating units (I) and (II) are 5 to 90 mol% and 95 to 10 mol%, respectively, and a 0.5 g/dl methylene chloride solution of the copolymer having a reduced viscosity (·sp/c) at 20°C of 0.3 to 2.0 dl/g; an optically anisotropic article comprising one type or two or more types of the copolymer, or a mixture that includes one type or two or more types of the copolymer, and an additional polymer; and an oriented polymer film obtained by stretching the film-like optically anisotropic article. |
