Patent ID: 8669315

Claim:
A polycarbonate, comprising: repeating carbonate units derived from one or more phenolic monomer, wherein each of the one or more phenolic monomers does not exhibit a half maximal inhibitory concentration (IC 50 ) less than 0.00025M for alpha or beta in vitro estradiol receptors, and wherein when the polycarbonate is subjected to conditions effective to provide one or more hydrolysis product, each of the one or more hydrolysis products does not exhibit a half maximal inhibitory concentration (IC 50 ) less than 0.00025M for alpha or beta in vitro estradiol receptors; and wherein the polycarbonate further comprises: a) a molecular weight in the range of from 3,000 to 80,000 Daltons; b) a phenolic end group content less than 20 meq/kg; c) a total chloride content less than 20 ppm; d) a transition metal content less than 20 ppm; and e) a residual phenolic monomer content less than 100 ppm.