Patent ID: 8168726

Claim:
A method of making a thermoplastic composition comprising melt blending a first polysiloxane/polyimide block copolymer having a first siloxane content, based on the total weight of the first block copolymer, and comprising a polysiloxane block and a non-siloxane polyimide block wherein the polysiloxane block comprises repeating units of Formula (I) a second polysiloxane/polyimide block copolymer having a second siloxane content, based on the total weight of the second block copolymer, and comprising a polysiloxane block and a non-siloxane polyimide block wherein the polysiloxane block comprises repeating units of Formula (I) wherein R 1-6 are independently at each occurrence selected from the group consisting of substituted or unsubstituted, saturated, unsaturated or aromatic monocyclic and polycyclic groups having 5 to 30 carbon atoms, substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms and substituted or unsubstituted alkenyl groups having 2 to 30 carbon atoms, V is a tetravalent linker selected from the group consisting of substituted or unsubstituted, saturated, unsaturated or aromatic monocyclic and polycyclic groups having 5 to 50 carbon atoms, substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms, substituted or unsubstituted alkenyl groups having 2 to 30 carbon atoms and combinations comprising at least one of the foregoing linkers, g equals 1 to 30, and d is greater than or equal to 1 and the first siloxane content equals the second siloxane content and the value of d for the first polysiloxane/polyimide block copolymer does not equal the value of d for the second polysiloxane/polyimide block copolymer.