Patent ID: 8178208

Claim:
An article having a metallized surface formed by vacuum metallization comprising an extruded composition consisting of, based on the total weight of the extruded composition, (a) from 44 to 80 weight percent of a thermoplastic poly(butylene terephthalate) having a weight average molecular weight of 10,000 to 200,000 Daltons; (b) from 20 to 50 weight percent of a thermoplastic poly(ethylene terephthalate) having an intrinsic viscosity of 0.5 to 0.8 deciliters per gram, measured in a 60:40 by weight phenol/1,1,2,2-tetrachloroethane mixture at 23° C., using a relative viscometer operating with a closed loop system, which measures the solvent and sample viscosity simultaneously; (c) from 5 to less than 20 weight percent of a talc filler having an average largest dimension of less than 0.9 micrometers, a median particles size of less than 0.9 micrometers, or both; (d) from 0.1 to 0.5 weight percent of a mold release agent; (e) optionally, a polyester selected from the group consisting of polyethylene naphthalate, polybutylene naphthalate, polytrimethylene terephthalate, poly(1,4-cyclohexylenedimethylene 1,4-cyclohexanedicarboxylate), poly(1,4-cyclohexylenedimethylene terephthalate), poly(cyclohexylenedimethylene-co-ethylene terephthalate), and combinations thereof; (f) optionally, a polycarbonate and/or an aromatic copolyester carbonate; (g) optionally, an inorganic phosphorous compound selected from the group consisting of phosphoric acid, phosphorous acid, and metal salts of phosphoric acid and phosphorous acid; and (h) optionally, at least one additive selected from the group consisting of antioxidants, flame retardant, heat stabilizers, light stabilizers, antistatic agents and colorants; wherein the metallized surface of the article, retains 90% or more of its gloss after heat aging at 160° C. for 1 hour, measured at 20 degrees using a trigloss meter.