Polycarbonate resin composition

A polycarbonate resin composition comprising:

• a first copolycarbonate comprising a repeating unit represented by Chemical Formula 1 below, a repeating unit represented by Chemical Formula 2 below, and a repeating unit represented by Chemical Formula 3 below;
• and
• a second copolycarbonate comprising a repeating unit represented by Chemical Formula 1 below and a repeating unit represented by Chemical Formula 4 below:
• wherein, in Chemical Formula 1,
• R1 to R4 are each independently hydrogen, a C1-10 alkyl, a C1-10 alkoxy, or a halogen, and
• Z1 is a C1-10 alkylene unsubstituted or substituted with a phenyl, a C3-15 cycloalkylene unsubstituted or substituted with a C1-10 alkyl, O, S, SO, SO2, or CO,
• wherein, in Chemical Formula 2,
• each X1 is independently a C1-10 alkylene,
• each R5 is independently hydrogen;
• a C1-15 alkyl unsubstituted or substituted with an oxiranyl, an oxiranyl-substituted C1-10 alkoxy, or a C6-20 aryl;
• a halogen;
• a C1-10 alkoxy;
• an allyl;
• a C1-10 haloalkyl;
• or a C6-20 aryl, and
• n is an integer of 10 to 200,
• wherein, in Chemical Formula 3,
• each X2 is independently a C1-10 alkylene,
• each Y1 is independently hydrogen, a C1-6 alkyl, a halogen, a hydroxy, a C1-6 alkoxy, or a C6-20 aryl,
• each R6 is independently hydrogen;
• a C1-15 alkyl unsubstituted or substituted with an oxiranyl, an oxiranyl-substituted C1-10 alkoxy, or a C6-20 aryl;
• a halogen;
• a C1-10 alkoxy;
• an allyl;
• a C1-10 haloalkyl;
• or a C6-20 aryl, and
• m is an integer of 10 to 200,
• wherein, in Chemical Formula 4,
• Z2 is a C1-10 alkylene unsubstituted or substituted with a phenyl, a C3-15 cycloalkylene unsubstituted or substituted with a C1-10 alkyl, O, S, SO, SO2, or CO, and
• l is an integer of 1 to 10,
• wherein the second copolycarbonate has a weight average molecular weight of 50,000 to 100,000 g/mol,
• wherein in the first copolycarbonate, a weight ratio of the repeating unit represented by Chemical Formula 1 to total weight of the repeating unit represented by Chemical Formula 2 and the repeating unit represented by Chemical Formula 3 is 1:0.001 to 1:0.2, and
• wherein the first copolycarbonate and the second polycarbonate are contained in a weight ratio 1:1 to 1:2.