| 摘要 |
A method for producing a polycarbonate-polyorganosiloxane copolymer, which comprises a step (a) for producing a polycarbonate oligomer with use of an alkaline aqueous solution of a divalent phenol, phosgene and an organic solvent, and which comprises a step wherein the content of a polycarbonate-polyorganosiloxane copolymer contained in the organic solvent to be introduced into the step (a) is set to less than 850 ppm by mass. |
