Patent ID: 8470934

Claim:
A polycarbonate compositions comprising: A) from 10 to 90 parts by weight, based on the sum of the parts by weight of the components A and B, of a polycarbonate comprising one or more monomer units of formulae (1a), (1b), and (1c), wherein R1 is, independently of one another, C 1 -C 4 -alkyl, n is 0, 1, 2, or 3 for formulae (1a) and (1b) and 3, 4, 5, or 6 for formula (1c), and R2 is, independently of one another, H, or linear or branched C 1 -C 10 alkyl, B) from 90 to 10 parts by weight, based on the sum of the parts by weight of the components A and B, of a polycarbonate comprising one or more monomer units derived from compounds of formula (4): wherein R3 is H, or linear or branched C 1 -C 10 alkyl, and R4 is linear or branched C 1 -C 10 alkyl.