Polycarbonate resin composition

A polycarbonate resin composition, comprising:

• 100 mass parts of a polycarbonate resin comprising a polycarbonate resin (A1) having a structural unit of formula (1) and a polycarbonate resin (A2) having a structural unit of formula (2) in a mass ratio (A1)/(A2) of (less than 10)/(more than 90) to 0/100;
• 13 to 40 mass parts of a phosphorus flame retardant (B);
• 2 to 40 mass parts of a silicone flame retardant (C), which is a polyorganosiloxane-containing graft copolymer;
• and
• 30 to 100 mass parts of talc (D),
• wherein the phosphorus flame retardant (B) is a condensed phosphate ester compound of formula (3)
• where:
• R1, R2, R3, and R4 each represent an alkyl group having 1 to 6 carbons or an aryl group having 6 to 20 carbons which are optionally substituted by an alkyl group;
• p, q, r, and s are each 0 or 1;
• k is an integer from 1 to 5;
• and X1 represents an arylene group,
• the phosphorus flame retardant (B) does not contain a phosphazene compound or contains a phosphazene compound in a content of less than 3 mass parts,
• a total content of the phosphorus flame retardant (B) and the silicone flame retardant (C) is 24 to 40 mass parts per 100 mass parts of a total of the polycarbonate resins (A1) and (A2), and
• a ratio [(B)+(C)]/(D) between the total content of the phosphorus flame retardant (B) and the silicone flame retardant (C) and the content of the talc (D) is not more than 1.04,
• wherein in formula (1), R1 represents a methyl group;
• R2 represents a hydrogen atom or a methyl group;
• X represents
• wherein, R3 and R4 represent a hydrogen atom or a methyl group;
• and Z represents a group that binds to the carbon atom C to form an optionally substituted alicyclic hydrocarbon having 6 to 12 carbons,
• wherein in formula (2), X is as defined for formula (1).