Eastman Tritan™ copolyesters provide heat resistance, toughness, and durability.

Eastman Tritan™ EX401 and EX501 copolyesters are infant care-specific resin grades that offer greater differentiating advantages for this market compared with any other BPA-free polymer:

  • BPA free
  • Crystal clarity
  • Colorless
  • Tough
  • Dishwasher durability
  • Flexibility

Tritan EX401 and EX501 compared with other materials

Polyethersulfone (PES) resins

  • Tritan EX401 and EX501 copolyesters offer better clarity—and do not impart the dirty yellow color that is characteristic of bottles and other parts molded from PES resins.
  • Tritan EX401 and EX501 may be processed at lower melt temperatures (280°C vs. 360°C) and mold temperatures
    —10° to 82°C vs. 150°C—improving safety of manufacturing operations and reducing energy consumption.
  • Lower cooling requirements of Tritan EX401 and EX501 can potentially reduce cycle time by 10%15%.
  • PES resins are more expensive than Tritan EX401 and EX501.

Clarified polypropylene (cPP)

  • Tritan EX401 and EX501 provide exceptional clarity and gloss without flow lines, bubbles, or haze—resulting in a quality look that can’t be matched by any olefin technology.
  • Tritan EX401 and EX501 don’t require a clarifier additive.
  • Tritan EX401 and EX501 can be processed at faster cycle times, improving production efficiencies.
  • Tritan EX401 and EX501 may offer superior printability without the need for secondary operations such as flame or corona treatments.
  • By improving efficiencies and eliminating additives and processes, Tritan EX401 and EX501 provide the processor with several opportunities to reduce costs.


  • Tritan EX401 and EX501 copolyester are shatter resistant.
  • Tritan EX401 and EX501 are lighter, reducing shipping and handling costs.

Transparent polyamide (tPA)

  • Tritan EX401 and EX501 combine heat and chemical resistance with greater hydrolytic stability to achieve excellent dishwasher durability.
  • Products made from Tritan EX401 and EX501 have superior toughness and greater product durability than those made from transparent polyamide.


  • Tritan EX401 and EX501 copolyester are made without BPA.
  • Tritan EX401 and EX501 combine heat and chemical resistance with greater hydrolytic stability for superior dishwasher durability.
  • Tritan EX401 and EX501 have 2% lower density, yielding more product per unit of resin.
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