What is the key advantage of SABIC’s new ULTEM SU3102P reactive oligomer over traditional reactive polyethersulfone (rPES) in thermoset composites?

The key advantage is that ULTEM SU3102P enables a significantly higher loading level—up to 50% by weight—compared to rPES, which typically allows only 7–12% loading; additionally, it improves the toughness–stiffness balance by up to 140% relative to rPES, enhancing resistance to impact-induced fracture and damage in composite parts.

How does ULTEM SU3102P support manufacturing efficiency and compatibility in existing thermoset composite production?

Despite its high 50% loading capacity, ULTEM SU3102P maintains low formulation viscosity, enabling consistent and efficient processing and helping shorten production cycles; it also boosts prepeg production efficiency and energy efficiency by up to 30%, and is fully compatible with existing manufacturing processes and multiple thermoset resin systems.

SABIC Launches ULTEM Reactive Oligomer

May 13, 2026

SABIC has launched ULTEM SU3102P, a reactive oligomer designed as a toughening agent for thermoset composites. The product allows up to 50% loading, improves toughness-stiffness balance by 140%, and boosts manufacturing efficiency by 30%.

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