Patent ID: 8981017
Filing Date: 2015-03-17
Classification: C08G

Abstract:
1. A polycarbonate-polyorganosiloxane copolymer comprising: (a) a polycarbonate block composed of a structural unit represented by formula (I); (b) a polyorganosiloxane block composed of a structural unit represented by formula (II), an average number of repeating of the structural units represented by formula (II) being 70 to 1000, a content of the polyorganosiloxane block in the polycarbonate-polyorganosiloxane copolymer being 1 to 30% by mass; and (c) a phenol residue comprising an allyl group, a content of the phenol residue in the polycarbonate-polyorganosiloxane copolymer being 400 ppm by mass or less, wherein: a viscosity-average molecular weight of the polycarbonate-polyorganosiloxane copolymer is 13000 to 26000: wherein R