Evonik (Essen / Germany; www.evonik.com) is now producing polyphthalamide (PPA) “Vestamid” HTplus in powder with a mean particle size of 50 µm, resins and film for use in the production of composite parts. The PA10T-based copolyamide has been developed as a matrix for composites and has very low viscosity, increasing fibre impregnation. The material offers lower water absorption than PA6T, resulting in dimensional and hydrolytic stability, Evonik claims. With a glass transition temperature of 125 °C and a processing window around 300 °C, the new "Vestamid" HTplus is suitable for the production of composite parts with carbon, glass or aramid fibres. Components made in the material are claimed to be more easily bonded by thermowelding, and have high impact resistance. They are particularly suitable for medium- and large-scale production, Evonik says.