Polycarbonate resin composition for the production of a substrate for an optical information medium

A polycarbonate resin composition for the production of a substrate for an optical information medium, comprising:

• 100 parts by weight of a polycarbonate resin (A) comprising a plurality of aromatic polycarbonate main chains, and
• 0.0005 to 1.0 part by weight of a mold release agent (B),
• wherein said polycarbonate resin composition exhibits a relative viscosity (ηr) within the range of from 1.17 to 1.19, said relative viscosity (ηr) being defined as the ratio (η/ηo) of viscosity value (η) of a methylene chloride solution of said polycarbonate resin composition to viscosity value (ηo) of methylene chloride, wherein the concentration of the polycarbonate resin composition in said methylene chloride solution is 0.005 g/cm3 and each of said viscosity values (η) and (ηo) is measured at 25° C., and
• wherein said relative viscosity (ηr) of the polycarbonate resin composition and a melt index (MI) of the polycarbonate resin composition as measured at 280° C. under a load of 2.16 kg in accordance with JIS K 7210 satisfy the following formulae (I) and (II):
• ηr≧−0.0723 log MI+1.316 (I) and
• ηr≦−0.0723 log MI+1.324 (II).