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Westlake Plastics TPX® Polymethylpentene
Categories: Polymer; Thermoplastic; Polymethylpentene (PMP); Polymethylpentene, Molded

Material Notes: TPX™ Polymethylpentene (PMP) is a unique semi-crystalline thermoplastic known to have the lowest density of any commercial grade polymer available at 0.82 g/cc. Its typical color is a semi-opaque milky white, however in thinner gauges of sheet and film the material is transparent. TPX™ offers a unique combination of heat resistance and release characteristics. Because the surface tension of TPX™ is very low, the product displays excellent release and peeling characteristics. In addition, the extremely low density of TPX™ offers the potential for significant weight reduction of the final product. Applications include release films, lightweight structural parts, and hollow fibers. PMP is FDA compliant and used in many food and beverage applications.

Industry: Engineering; Semiconductor and ESD

Colors Available: Natural

Attributes: Chemical Resistance; Dielectric Properties; Transparent

Shapes: Extruded Slab; Compression Sheet; Extruded Rod; Extruded Film

Information provided by Westlake Plastics.

Available Properties
  • Water Absorption, ASTM D570
  • Tensile Strength at Break, ASTM D638
  • Tensile Strength, Yield, ASTM D882
  • Elongation at Break, ASTM D882
  • Tensile Modulus, ASTM D882
  • Flexural Strength, ASTM D790
  • Flexural Modulus, ASTM D790
  • Izod Impact, Notched, ASTM D638
  • Volume Resistivity, ASTM D257
  • Deflection Temperature at 0.46 MPa (66 psi), ASTM D648
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