Patent ID: 7531615

Claim:
A polycarbonate comprising repeating structural carbonate units of the formula (H-1): in which R h is a radical having the formula (H-2): wherein each of R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 , R 22 , R 23 , R 24 , R 25 , R 26 , R 27 , and R 28 is independently a hydrogen, a C 1 -C 6 alkyl group, or a halogen substituted C 1 -C 6 alkyl group; and further comprising repeating structural carbonate units of the formula (A-4): wherein the polycarbonate has a weight average molecular weight (Mw) of from about 15,000 to about 100,000.