Patent ID: 8784963

Claim:
A branched polycarbonate having a branching derived from a polyfunctional compound having in the molecule at least 3 functional groups that are reactive with a carbonic acid diester, the branched polycarbonate having a repeating unit represented by general formula (1) on the main chain and branched chains and comprising a branched structure (a) derived from the polyfunctional compounds directly bonded to the main chain and branched chains and a branched structure (b) including at least one selected from the group consisting of branched structures represented by general formulas (2), (3) and (4), wherein: the total amount of substance with branched structure (a) and branched structure (b) with respect to the amount of substance of the repeating unit represented by general formula (1) is 0.2-1.0 mol %, the ratio of the amount of substance with branched structure (b) with respect to the total amount of substance with branched structure (a) and branched structure (b) is 0.1-0.6, and the ratio of the amount of substance with the branched structure represented by general formula (2) with respect to the amount of substance with branched structure (b) is 0.5 or greater, [In formulas (1), (2), (3) and (4), Ar represents a divalent aromatic residue and Ar′ represents a trivalent aromatic residue.]