Patent ID: 7323536

Claim:
A reaction product obtained by melt blending a combination comprising: a polymer comprising aromatic ester units of formula wherein T is a divalent aromatic radical and D 1 is a divalent aromatic radical, and carbonate units of formula wherein at least 60% of the total number of D 2 groups are divalent aromatic radicals and the balance thereof are divalent aliphatic, alicyclic, or aromatic radicals; and a transesterification catalyst, wherein the reaction product has a haze of less than 5.0% measured at a thickness of 3.2 mm according to ASTM D1003-00; and wherein the polymer is selected such that, in the absence of the transesterification catalyst, the similarly melt blended combination has a haze of greater than 5.0% measured at a thickness of 3.2 mm according to ASTM D1003-00.