Polycarbonate composition from branched chain dihydric phenol

摘要

Aromatic polycarbonates derived from (i) a carbonate precursor, and (ii) at least one dihydric phenol represented by the general formula <IMAGE> wherein: R and R' are independently selected from halogen radicals and monovalent hydrocarbon radicals; R1 is selected from hydrogen and alkyl radicals; R3 is selected from hydrogen and alkyl radicals; R2 is selected from alkyl radicals, with the proviso that when both R1 and R3 are hydrogen then R2 is selected from branched alkyl radicals containing at least three carbon atoms; and n and n' are independently selected from whole numbers having a value of from 0 to 4 inclusive. These polycarbonates are useful in the production of molded articles, films, and sheets.