POLYCARBONATE-POLYSILOXANE COPOLYMERS, METHOD OF MAKING, AND ARTICLES FORMED THEREFROM

摘要

A polycarbonate copolymer comprising 90 to 100 mol% of units derived from a cyclohexylidene bisphenol of the formula (I), wherein R^a' and R^b' are each independently C_1-12 alkyl, T is a C_5-16 cycloalkylene, a C_5-16 cylcloalkylidene, a C_1-5 alkylene, a C_1-5 alkyiidene, a C_6-13 arylene, a C_7-I2arylalkylene, C_7-12 arylalkylidene, a C_7-12 alkylarylene, or a C_7-I2 arylenealkyl, and r and s are each independently 1 to 4; 2 to 35 wt% of units derived from a polysiloxane diol of the formulas (II and III), or a combination thereof, wherein Ar is a substituted or unsubstituted C6.36 arylene group, each R is the same or different C_1-13 monovalent organic group, each R⁶ is the same or different divalent C₁-C₃₀ organic group, and E is an integer from 2 to 100; and 0 to 10 mol% of units derived from a dihydroxy aromatic compound of formula (IV), wherein R^a and R^b are each independently halogen, p and q are each independently integers of 0 to 4, and the dihydroxy aromatic compound of formula (3) is not the same as the cyclohexylidene bisphenol or the polysiloxane diols.