Patent ID: 8410240

Claim:
Polycarbonate comprising repeat units represented by Formula 1, Formula 2 and Formula 3, respectively: wherein: R 1 and R 2 are the same or different and are each independently substituted or unsubstituted C1 to C6 alkyl, substituted or unsubstituted C3 to C6 cycloalkyl, substituted or unsubstituted C6 to C12 aryl or halogen, and a and b are the same or different and are each independently an integer from 0 to 4; wherein: R 1 and R 2 are the same or different and are each independently substituted or unsubstituted C1 to C6 alkyl, substituted or unsubstituted C3 to C6 cycloalkyl, substituted or unsubstituted C6 to C12 aryl or halogen, and a and b are the same or different and are each independently an integer from 0 to 4; and wherein: Q is substituted or unsubstituted C5 to C10 cycloalkyl, and a and b are the same or different and are each independently an integer from 0 to 4.