SABIC Launches ULTEM SU3102P Oligomer for Aerospace Composites

SABIC Introduces ULTEM SU3102P Reactive Oligomer for Aerospace Composites

Saudi Basic Industries Corporation (SABIC) has officially launched the ULTEM™ SU3102P reactive oligomer, a new polyetherimide (PEI) toughening agent engineered specifically for thermoset composites in the aerospace sector. According to a company press release, the material is designed to optimize the manufacturing of both primary and secondary Commercial-Aircraft structures by providing higher loading capacities and enhanced processing efficiency.

The aerospace industry is currently managing a significant increase in global passenger and cargo air traffic. This operational surge places pressure on aircraft Manufacturers to scale capacity and throughput while strictly adhering to safety, cost, and Sustainability mandates. To achieve these targets, the sector relies heavily on advanced composite materials for “lightweighting”, reducing the overall weight of an aircraft to lower fuel consumption and minimize carbon emissions.

However, engineering materials that are simultaneously lighter, thinner, and sufficiently durable to withstand extreme flight conditions remains a persistent challenge. SABIC states that its new oligomer addresses this industry gap by improving the durability and manufacturability of aerospace composites. The innovation recently earned a Gold award in the Materials Science category at the 2026 Edison Awards.

Technical Specifications and Manufacturing Integration

Based on the manufacturer’s specifications, the ULTEM SU3102P is a low molecular weight reactive oligomer based on PEI functionalized with amine groups. It is targeted for use in critical aerospace structures, including wings, fuselage frames, spoilers, and interior cabin components. Like other materials in the ULTEM portfolio, the company notes that the SU3102P oligomer features inherent flame retardance, high strength, high heat and chemical resistance, and a low coefficient of thermal expansion (CTE).

A key operational advantage highlighted in the press release is the material’s compatibility with existing production lines. SABIC describes the oligomer as a “drop-in” solution, meaning aerospace manufacturers can integrate it without requiring costly equipment upgrades. It is reportedly compatible with a broad spectrum of thermoset resin systems, including epoxy, cyanate ester, benzoxazine, bismaleimide, phenolic, phenoxy, and urethane. The material is currently available globally for both sampling and commercial-scale orders.

Performance Metrics vs. Industry Standards

SABIC claims that the ULTEM SU3102P oligomer significantly outperforms reactive polyethersulfone (rPES), which is currently considered the industry standard. According to the company’s published data, the new thermoplastic solution is capable of achieving unprecedented loadings of up to 50% by weight. In contrast, traditional rPES typically permits loadings of only 7% to 12%.

Furthermore, the manufacturer reports that the new oligomer improves the toughness-stiffness balance of composite materials by up to 140% compared to rPES. This enhancement is intended to help composites better resist fracture and impact damage, potentially reducing aircraft maintenance downtime and improving overall safety. Despite the high loading capabilities, SABIC states that the oligomer maintains a low formulation viscosity, which can boost the productivity and energy efficiency of thermoset composite prepregs by up to 30%.

Industry Impact and Corporate Recognition

The launch of this material aligns with broader industry efforts to streamline supply chains and reduce the environmental footprint of aerospace manufacturing.

“As global air traffic increases significantly with more passengers and cargo, the industry faces pressure to build capacity and throughput within its existing footprint, while still meeting cost, safety and sustainability goals. Our new ULTEM oligomer can help designers create lighter, thinner and tougher composite structures, increase manufacturing efficiency and cut emissions. This addition to our ULTEM portfolio builds on a long history of success in aerospace applications and demonstrates our strong commitment to materials innovation.”
— Sergi Monros, Vice President of SABIC Polymers, Specialties Business Unit

The product’s development was recognized at the 2026 Edison Awards, where the ULTEM SU3102P reactive oligomer was named a Gold winner in the Materials Science category. According to the company, the 2026 ceremony marked the sixth consecutive year SABIC has been honored at the Edison Awards. In 2026 alone, the corporation secured five awards across multiple categories, including Material Science, Energy & Climate Resiliency, and Clean Water, Food & Agriculture.

AirPro News analysis

At AirPro News, we note that the introduction of a “drop-in” toughening agent with a 50% loading capacity represents a notable shift in composite material science. For aerospace original equipment OEMs and tier-one suppliers, the ability to improve material toughness by a claimed 140% without overhauling existing thermoset resin equipment is a critical capital expenditure saver. Furthermore, the reported 30% boost in energy efficiency during the prepreg manufacturing process directly supports the aviation sector’s aggressive net-zero carbon targets for 2050. If the commercial application of ULTEM SU3102P matches SABIC’s laboratory metrics, it could accelerate the adoption of thinner, lighter composite structures in next-generation aircraft designs.

Frequently Asked Questions (FAQ)

What is the ULTEM SU3102P reactive oligomer?
It is a new polyetherimide (PEI) toughening agent developed by SABIC, designed to make thermoset composites used in aerospace manufacturing lighter, stronger, and more durable.

How does it compare to existing materials?
According to SABIC, it outperforms the industry standard (rPES) by allowing up to 50% by weight (compared to 7-12%) and improving the toughness-stiffness balance by up to 140%.

Do manufacturers need new equipment to use it?
No. The company states it is a “drop-in” solution compatible with existing manufacturing processes and a wide range of thermoset resin systems.

Sources

• SABIC Official Press Release