Patent ID: 8569406

Claim:
A branched polycarbonate resin, which has: a ratio of the melt viscosity η 10 measured at 300° C. at a shear rate of 10 sec −1 to the melt viscosity η 1000 measured at 300° C. at a shear rate of 1,000 sec −1 (η 10 /η 1000 ) of at least 3 and at most 8; a branch parameter G=[η]/[η] lin of at least 0.80 and at most 0.94; and a pencil hardness of at least HB, wherein: [η] represents the intrinsic viscosity (dl/g) of the branched polycarbonate resin in a methylene chloride solvent at 20° C.; and [η] lin represents the intrinsic viscosity in a methylene chloride solvent at 20° C. of a linear polycarbonate having the same weight average molecular weight as the branched polycarbonate resin as measured by a GPC method with a general purpose calibration curve.