Patent ID: 7718733

Claim:
A composition consisting essentially of an optically clear thermoplastic resin composition consisting essentially of: (a) at least one substituted or unsubstituted polycarbonate, (b) a polyorganosiloxane/polycarbonate block copolymer of the structure XVI: wherein R 17 , R 18 and R 20 are independently at any occurrence an aliphatic, aromatic or cycloaliphatic radical; E 1 is a member independently selected from the group consisting of hydrogen, lower alkyl, alkoxy, aryl, alkylaryl, halogen radicals and mixtures thereof; A 1 is a hydrocarbon radical; D 1 is a tetravalent hydrocarbon radical Y 1 is a member at each occurrence independently selected from the group consisting of fluorine, bromine, chlorine, iodine, nitro, alkenyl, allyl, alkyl, aryl, aralkyl, alkaryl, cycloalkyl, or OR 2 wherein R 2 is alkyl, aryl, aralkyl, alkaryl, or cycloalkyl; m is zero to the number of replaceable hydrogens on A 1 available for substitution; and q is an integer between 1 and 200, having polyorganosiloxane domains having an average domain size less than or equal to 45 nanometers; (c) at least greater than 30 weight percent of a (semi)aliphatic polyester selected from the group consisting of poly(cyclohexane dimethanol cyclohexane dicarboxylate), cyclohexanedimethanol-terephthalic acid-ethylene glycol copolymers and combinations thereof; (d) an impact modifier having a refractive index in the range between about 1.51 and about 1.56; and (e) an additive; wherein the composition has a Notched Izod Impact of at least 55 kJ per m 2 at 0° C. as measured using ISO 180/U method, a Puncture Impact of at least 100 J at −30° C. as measured using ISO 6603 Standard Method, a Melt Volume Rate of at least 11 cm 3 /10 min as measured using ISO Standard 133 Method, a yellowness index of less than about 6 measured in accordance with ASTM D-1003, and a haze value about less than 3 measured in accordance with ASIM D-1003.