Polyphthalamide (PPA) is a material that can bridge the gap between technical and high-performance thermoplastics. It has a higher continuous service temperature, lower moisture absorption, and higher abrasion resistance compared to PA6 and PA66. Despite these favourable properties, no technical fibre application is known. The main reason for this is the spinning behaviour required for melt spinning. In comparison to polymers that are spun, PPA exhibits a higher viscosity, poorer viscoelastic behaviour, and a decomposition temperature that is close to its melting point. In this study, the compounding of PPA with PA6/PA66 enables the creation of a single-phase blend of PA/PPA with a reduced melting temperature, customised flow behaviour, and adapted mechanical properties. The impact of aliphatic blend partners on thermal and thermomechanical material behaviour is analysed, a spinning-optimised blend is produced, and the development of a technical multifilament is presented.