| 摘要 |
The present invention addresses the problem of providing a styrene-based optical resin composition, a molded product, and a light guide plate that have excellent colorless transparency and long-term thermal stability, and that exhibit little change in hue and transmittance. The present invention provides a styrene-based optical resin composition that comprises (a) a styrene-based resin having a weight-average molecular weight of 150,000-700,000, (b) 6-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propoxy]-2,4,8,10- tetra-tert-butyldibenzo[d,f][1,3,2]dioxaphosphepin, and (c) a phosphorus-based antioxidant, and/or (d) a hindered phenolic antioxidant, and is characterized in that 100 mass% of the styrene-based resin composition includes 0.02-0.40 mass% of (b), 0.02-0.50 mass% of (c), and 0.02-0.50 mass% of (d). |
