abstract |
(57) [Summary] [Purpose] To provide injection-molded products with surface modification (improvement in lubricity, abrasion resistance, etc.) while maintaining the transparency and mechanical properties (bending, pulling, etc.) of polycarbonate. To do. [Structure] Having a constitutional unit composed of dihydric phenol and polysiloxane, the ratio of the constitutional unit composed of polysiloxane is A core layer having a concentration of polysiloxane constituent units of 50 Å or more in a surface layer having a depth of less than 50 Å from the surface of the molded product, which is an injection-molded product from 0.1 to 20% by weight of a polycarbonate-polysiloxane copolymer. Copolymer injection molded article having a concentration of at least twice the concentration of the polysiloxane constitutional unit in |