Transparent Polycarbonate Polyester Composition and Process

A composition comprising a uniform blend of:

• a) a resin blend of a polycarbonate resin and a cycloaliphatic polyester resin, said cycloaliphatic polyester resin comprising the reaction product of an aliphatic C2-C12 diol or chemical equivalent and a C6-C12 aliphatic diacid or chemical equivalent, said cycloaliphatic polyester resin containing at least about 80% by weight of a cycloaliphatic dicarboxylic acid, or chemical equivalent, and/or of a cycloaliphatic diol or chemical equivalent;
• and
• b) an impact modifying amorphous resin having a refractive index from about 1.51 to about 1.58;
• wherein the miscible blend comprises the polycarbonate and the cycloaliphatic polyester resin in amounts such that the index of refraction of the blend matches the index of refraction of said impact modifier to produce a transparent or translucent composition.