Polycarbonate-based resin, production method therefor, and polycarbonate-based resin composition

A method of producing a polycarbonate-based resin, comprising:

• a step (1) of causing a dihydric phenol and phosgene to react with each other in an organic solvent to produce a polycarbonate oligomer;
• and
• a step (2) of causing the polycarbonate oligomer, the dihydric phenol, and a terminal stopper to react with each other to produce the polycarbonate-based resin,
• the step (2) comprising using an amine-based catalyst as a polymerization catalyst at a molar ratio of 0.015 or more and 0.030 or less with respect to a chloroformate group of the polycarbonate oligomer obtained in the step (1),
• wherein the polycarbonate-based resin has a ratio of an amine terminal to all terminal groups of 3.7 mol % or more and 10.0 mol % or less,
• wherein the method further comprises adding a branching agent in the step (1) and/or the step (2);
• wherein the amine terminal has a structure represented by the following formula (ii),
• wherein, R11 and R12 each independently represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 8 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, and wherein the polycarbonate-based resin does not include a repeating unit of represented by the following general formula (II′):
• wherein R1 and R2 each independently represent a halogen atom, X is an isopropylidene group and “a” and “b” are 2.