US compounder of engineering resins Polymer Resources has debuted its new unfilled, impact-modified polybutylene terephthalate (PBT) resin. The injection-molding-grade TP-FR-IM3 resin is intended for such electrical applications as outdoor, intermittent-outdoor, and indoor components like enclosures and housings.  The company says it offers high levels of weatherability, chemical and impact resistance, and flame retardance, earning all-color… Read more…