Polybutylene Terephthalate (PBT) is a semi-crystalline polyester produced by the reaction of terephthalic acid or dimethyl terephthalate with 1,4-butaindiol using special catalysts. Key properties of PBT include high strength and stiffness, dimensional stability, low water absorption, good chemical resistance, good oxidation (yellowing) resistance, and excellent electrical properties. PBT is processed by most standard processing techniques including injection molding, blow molding, and extrusion.
Typical applications for PBT include windshield wiper arms, door handles. connectors, electrical housings, automotive mirror housing supports, circuit breakers, electric switches, fibers, window profiles, toys and film.