PEI Oligomers

Description

ULTEM™ SU3102P reactive oligomer is a novel toughening agent for thermoset composites used in primary and secondary aerospace structures such as wings, fuselage frames, spoilers and interior components. This new polyetherimide (PEI) oligomer delivers unmatched thermoset formulation freedom without impacting processability. ULTEM SU3102P oligomer, a Gold winner of the 2026 Edison Awards, supports development of advanced aerospace structures with superior performance compared to incumbent materials.

Typical Applications

Well suited for use as a toughening agent in thermoset composites used in primary and secondary aerospace structures such as wings, fuselage frames, spoilers and interior components.

Benefits

Able to achieve loadings of up to 50 percent by weight. In contrast, reactive polyethersulfone (rPES) typically permits loadings of only 7 to 12 percent.

Improves toughness-stiffness balance by up to 140 percent vs. rPES, which helps composite materials resist fracture and other damage from impact. Enhanced part durability can reduce maintenance time and costs and increase air safety.

Despite its high loadings, the ULTEM oligomer maintains low formulation viscosity,