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Ultrason® product range

Properties of Ultrason®

Processing Ultrason®

Ultrason® case studies

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Characteristic properties of Ultrason® (PSU, PESU, PPSU)



BASF’s Ultrason® grades are amorphous thermoplastics derived from polysulfone (PSU), polyethersulfone (PESU) and polyphenylsulfone (PPSU) and offer very high resistance to heat. Their wide spectrum of properties allows them to be molded into high-quality engineering parts and highly stressed mass-produced articles.


The extraordinary property profile of Ultrason®:

high stiffness

high mechanical strength

low dependence of the properties on
the temperature

very high long-term service temperature

good electrical insulating capacity

favorable dielectric properties

very favorable behavior in case of
exposure to fire

excellent hydrolysis resistance

good dimensional stability



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