Patent ID: 8399598

Claim:
A copolycarbonate comprising 50 to 99 mol % of a carbonate constituent unit (1) of the following formula and 50 to 1 mol % of a carbonate constituent unit (2) of the following formula having a boiling point of 180° C. or higher under reduced pressure of 4×10 −3 MPa wherein X is a group of the following formula (4) wherein *1 and *2 are parts where they form bonds to oxygen of unit (2) respectively, or a group represented by the following formula, —R 2 —O—Ar 2—Y—Ar 1—O—R 1— wherein Y is an alkanediyl group having 1 to 20 carbon atoms, a cyclohexylene group or a fluorenediyl group, Ar 1 and Ar 2 are a phenylene group respectively, and R 1 and R 2 are an ethylene group respectively.