High glass transition temperature copolycarbonates, methods of manufacture, and uses thereof

A copolycarbonate is disclosed, comprising units of the formula (1) wherein 70 to 99.5 mole percent of the total number of R groups are derived from a dihydroxy compound of formula (2) wherein R and R are each independently a halogen or a C1-6 alkyl group, R is a methyl or a phenyl group, and c is independently 0 to 4; and 0.5 to 30 mole percent of the total number of R groups are derived from a dihydroxy compound of formula (3) HO-R -OH (3), wherein at least 60% of the R groups are aromatic, and the dihydroxy compound of formula (3) is not the same as the dihydroxy compound of formula (2), and wherein the copolycarbonate has a glass transition temperature of 250 DEG C or higher.