Extrusion-Grade PC Copolymers for Wall & Ceiling Panels in Passenger Trains, Subways, Trams

Newly developed extrusion-grade PC copolymers with high flame resistance and low smoke toxicity will be commercially launched by SABIC in late 2022 or early 2023. Elcress FST2734E and its biobased version LNP Elcrin FST2734EB are said to be well-suited for wall and ceiling panels in passenger trains, subways and trams. Both comply with the European railway standard for fire safety, EN 45545 R1-HL2, and meet key rail OEM requirements including,  high modulus for durability, molded-in custom color for paint elimination and branding, UV resistance to help minimize yellowing, and chemical resistance to facilitate cleaning removal without causing environmental stress cracking.

As thermoplastics, these PC copolymers are said to offer distinct advantages over stamped metals and thermosets, such as expanded design freedom, system cost reduction, up to 20% less weight for easier maintenance, and the potential for easier recyclability. Elcrin FST2734EB copolymer is formulated with approximately 55% renewable feedstock from waste materials such as crude tall oil. An Intergovernmental Panel on Climate Change (IPCC) CO₂ equivalent analysis showed this product reduced carbon emissions by approximately 28% vs. fossil-based counterparts.

Said SABIC’s technology director, specialties, Luc Govaerts, “In developing these new grades, we worked closely with customers to understand their needs and preferences, including requests for biobased, drop-in alternatives that strengthen environmental protection. These specialty copolymers represent a new generation of materials for panels and open up new possibilities for the industry.”