COLORED MASTER PELLET FOR OPTICAL MOLDINGS AND COLORED OPTICAL DISK SUBSTRATE

摘要

A blend of colored master pellets for an optical moldings formed from a colored composition comprising a transparent thermoplastic resin (A component) containing a colorant (B component), wherein, when a concentration of the colorant in each pellet is represented by the absorbance of the pellet and the average value of the absorbances of the pellets is represented by X, the number of the pellets having a concentration of the colorant in the range of 0.5X to 1.5X accounts for at least 90 % of the total number of the pellets. The blend of colored master pellets shows a markedly small variation in the concentrations of a colorant in individual pellets, and thus can be suitably used for producing optical moldings such as an optical disk which are remarkably reduced in the occurrence of color shading or color lines.