Patent ID: 7321014

Claim:
A composition comprising: a first copolymer comprising aromatic ester units of formula (1) wherein T is a divalent aromatic radical and D 1 is a divalent organic radical, and carbonate units of formula (2) wherein at least 60% of the total number of D 2 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic, alicyclic, or aromatic radicals; a second copolymer comprising carbonate units of formula (2) and repeating siloxane units of formula (3) wherein each occurrence of R 3 is independently C 1 -C 12 hydrocarbyl, and the second copolymer has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters; and a transesterification catalyst, wherein a reaction product derived from the composition has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters.