| 摘要 |
PROBLEM TO BE SOLVED: To provide a styrene-based resin composition excellent in colorless transparency, which prevents a whitening phenomenon by environmental changes and is particularly suitable for an optical use such as a light guide plate.SOLUTION: The styrene-based resin composition comprises a styrene-based resin having a weight average molecular weight of 150000 to 700000 and a polyoxyethylene type nonionic surfactant, in which the content of the polyoxyethylene type nonionic surfactant is 0.4 to 2.0 mass% in 100 mass% of the styrene-based resin composition. |
