| 摘要 |
PURPOSE:To provide an optical polycarbonate resin which has a markedly improved durability in an environment of high temperature and humidity, an excellent transparency, a well-maintained tint and a good melt stability. CONSTITUTION:The title composition comprises 100 pts.wt. bis(hydroxyaryl) alkane polycarbonate resin with a viscosity-average molecular weight of 12,000-18,000, 0.0005-1 pt.wt. phosphite ester compound, and 0.0005-1 pt.wt compound containing an epoxy group. |
