Sorona® EP thermoplastic polymer

A Poly Trimethylene Terephthalate With a Smaller Carbon Footprint

Sorona® EP contains 20% to 37% renewable material from non-food biomass, and has performance similar to conventional PBT plastics.

Sorona® EP Comparative Properties Chart

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DuPont Sorona® EP poly trimethylene terephthalate, a thermoplastic polymer, delivers molding characteristics comparable to high-performance PBT (polybutylene terephthalate), including good strength and stiffness.

In addition, Sorona® EP delivers good dimensional stability and finishing qualities, making it an excellent choice for uses from automotive parts to furniture and mobile phone housings, and both industrial and consumer products.

Reducing Fossil Fuel Use, Not Performance

DuPont is committed to reducing dependence on fossil fuels. Containing 20% to 37% renewable material from non-food biomass, Sorona® EP is a breakthrough in biopolymer performance, because it allows renewable materials to be used more widely.

How Sorona® EP is Made

Sorona® EP thermoplastic polymer grades are made with a key intermediate called Susterra renewably sourced propanediol made from corn sugar, using proprietary fermentation and chemical processes. Sorona® EP starts out with the same polymer chemistry as the Sorona® used for fibers. Using custom formulation technology and additional enhancements results in high-performance resins suitable for engineering applications.




  • Automotive Sustainable Fibers

    The automotive industry has an increasing need for high-performance, environmentally sustainable fibers. The Toyota SAI® meets the increasing demands for a sustainable luxury automobile by using DuPont™ Sorona® renewably sourced polymer for the ceiling surface skin, sun visor and pillar garnish.