Polycarbonate resin composition and molded article thereof

A polycarbonate-based resin composition, comprising:

• an aromatic polycarbonate-based resin (A-1) comprising a structural unit represented by the following formula (II);
• and
• an aromatic polycarbonate-based resin (A-2) comprising a repeating unit represented by the following formula (I),
• wherein a ratio of the structural unit represented by the formula (II) to a total of the structural unit represented by the formula (II) and a repeating unit represented by the formula (III) is 50 mass % or more:
• wherein in the formula (II),
• R11 and R12 each independently represent a halogen atom, or a group selected from the group consisting of:
• an alkyl group having 1 to 18 carbon atoms;
• an alkoxy group having 1 to 18 carbon atoms;
• a cycloalkyl group having 3 to 20 carbon atoms;
• a cycloalkoxy group having 3 to 20 carbon atoms;
• an alkenyl group having 2 to 10 carbon atoms;
• an aryl group having 6 to 14 carbon atoms;
• an aryloxy group having 6 to 14 carbon atoms;
• an aralkyl group having 7 to 20 carbon atoms;
• an aralkyloxy group having 7 to 20 carbon atoms;
• a nitro group;
• an aldehyde group;
• a cyano group;
• and a carboxyl group,
• R13 represents a hydrogen atom, or a group selected from the group consisting of:
• an alkyl group having 1 to 5 carbon atoms;
• a cycloalkyl group having 3 to 20 carbon atoms;
• a cycloalkoxy group having 3 to 20 carbon atoms;
• an alkenyl group having 2 to 10 carbon atoms;
• and an aryl group having 6 to 14 carbon atoms,
• R14 represents a group selected from the group consisting of:
• a saturated or unsaturated cyclic hydrocarbon group having 3 to 20 carbon atoms;
• a substituted or unsubstituted alkyl group;
• and a 3- to 20-membered saturated or unsaturated heterocyclic group,
• “c” and “d” each independently represent an integer of from 0 to 4, and
• “m” represents an integer of from 0 to 20;
• wherein in the formula (I),
• R1 and R2 each independently represent a halogen atom, or a group selected from the group consisting of:
• an alkyl group having 1 to 18 carbon atoms;
• an alkoxy group having 1 to 18 carbon atoms;
• a cycloalkyl group having 3 to 20 carbon atoms;
• a cycloalkoxy group having 3 to 20 carbon atoms;
• an alkenyl group having 2 to 10 carbon atoms;
• an aryl group having 6 to 14 carbon atoms;
• an aryloxy group having 6 to 14 carbon atoms;
• an aralkyl group having 7 to 20 carbon atoms;
• an aralkyloxy group having 7 to 20 carbon atoms;
• a nitro group;
• an aldehyde group;
• a cyano group;
• and a carboxyl group,
• X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, —S—, —SO—, —SO2—, —O—, or —CO—, and
• “a” and “b” each independently represent an integer of from 0 to 4;
• wherein in the formula (III), R3 and R4 each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms.