Polycarbonate compositions having improved thermal dimensional stability and high refractive index

摘要

Disclosed herein are methods and compositions of polycarbonate compositions having, among other characteristics, improved thermal dimensional stability, hydrolytic stability and high refractive index. The resulting polycarbonate copolymer composition, comprising a polycarbonate and a polysulfone, can be used in the manufacture of articles for optical applications. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

主权项

1. A polycarbonate copolymer composition comprising:
(a) monomeric units comprising a carbonate unit derived from a first aromatic dihydroxy compound, wherein the carbonate unit comprises the formula: wherein Ra and Rb each represent a halogen atom or a monovalent hydrocarbon group and can be the same or different; p and q are each independently integers of 0 to 4, R3 is each independently a C1-6 alkyl group, j is 0 to 4, and R4 is a C1-6 alkyl, phenyl, or phenyl substituted with up to five C1-6 alkyl groups; and (b) monomeric sulfone units comprising the formula wherein m is from 4-7.