Właściwości PPSU is an amorphous material, with improved impact and hydrolysis resistance compared to PSU. The usual operating temperature is approx. +170 °C. The extremely high notched impact strength remains also after a heat aging.
Properties: high strength and rigidity, very high impact strength (also at low temperatures), very good dimensional stability, very high chemical resistance, high resistance to all kinds of radiation, repeated sterilisation, lower chemical resistance than comparable semicrystalline materials

Applications: As PSU but with higher chemical resistance.