Polyetherimide (PEI) is an amorphous thermoplastic with high temperature resistance, impact strength, creep resistance, and rigidity. The high-temperature resistance of PEI competes with polyketones, polysulfones, and polyphenylene sulfides. The polymer is resistant to alcohols, acids, and hydrocarbon solvents but will dissolve in partially halogenated solvents. Both glass and carbon fiber-reinforced grades are available. Polyetherimide finds use in electrical, automotive industry, transparent food service and medical applications.