Enamelled wires solderable at 350°C with temperature index 155

By incorporating esterimide groupings in a reaction component of polyurethane wire, we have succeeded in producing a wire with temperature index ISS, which is produced at the same speeds as conventional PUR wires but exhibits a higher thermoplasticity limit and overload capability while retaining the same soldering properties. Thus it is possible to use the wire for traditional applications for PUR wires, but with high loadings, as well as for windings exposed to more severe mechanical stressing, such as contactor coils and rotors.