Patent ID: 8617702

Claim:
A thermally insulated structural member for a door or window, comprising: a frame comprising a metal; and an insulation bar at least partially enclosed by the frame; wherein the insulation bar comprises a thermoplastic composition comprising about 55 to about 95 weight percent of a compatibilized polyamide-poly(arylene ether) composition, and about 5 to about 45 weight percent of hollow glass beads, wherein the hollow glass beads have a volume-average diameter of about 20 to about 60 micrometers, a true density of about 0.3 to about 0.5 grams per milliliter, and an isostatic crush strength of about 30 to about 60 megapascals; wherein the thermoplastic composition comprises less than 5 weight percent of fibrous reinforcement; wherein the thermoplastic composition has a density of about 0.8 to about 1 gram per milliliter; and wherein the thermoplastic composition excludes foaming agents and their residue.