EpiSpire® EP-340

EpiSpire®EP -340 is a high temperature resistant, high performance, amorphous sulfone polymer. This resin represents a technological breakthrough that sets a new benchmark for the thermal properties of amorphous thermoplastics available to design engineers today. EpiSpire EP -340 resin has a glass transition temperature of 265 ℃(509 ° F) and a thermal deformation temperature of 255 ℃(491 ° F). The glass transition temperature is at the highest level of fully thermoplastic transparent resin on the market today. In addition to excellent thermal properties, the resin also shows other typical properties and advantages of aromatic sulfone polymers, including high strength, high stiffness, dielectric properties over a wide temperature range, hydrolysis resistance in hot water and steam environments, excellent acid resistance, alkali resistance, and inherent flame retardancy. In addition, the resin also shows a high degree of dimensional control during processing and excellent dimensional stability during the life of the component.


EP -340 resin is very suitable for manufacturing by injection molding, extrusion molding and other thermoplastic manufacturing technologies. With its unique combination of excellent high temperature resistance and other engineering properties, EP- 340 resin has become a good metal substitute material and thermosetting resin substitute material in various engineering applications.


In the natural state, EpiSpire®EP -340 resin is transparent amber. The resin is used in the form of natural color particles and powder for mixing or solution processing.

• natural color: EP-340 NT

• powder: EP-340P