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Technical Data Sheet
Eastman Tritan™ Copolyester EX401

  • Baby bottles/sippy cups
  • Childcare items
  • Infant/toddler
  • Small appliances non-food contact
Key Attributes
  • Chemical resistance
  • Clarity
  • Global food contact regulatory clearances
  • Heat resistance
  • Hydrolytic stability
  • Impact resistance
  • Processing ease
  • Sterilization capable via steaming or boiling water

Product Description

Tritan EX401, specifically developed for the Infant Care market, is an amorphous copolyester with excellent appearance and clarity. Tritan EX401 contains a mold release derived from vegetable based sources. Its most outstanding features are clarity, excellent toughness, hydrolytic stability, and heat and chemical resistance. Tritan EX401 meets infant care sterilization requirements via boiling water or microwave steam sterilization. This new-generation copolyester can also be molded into various applications without incorporating high levels of residual stress. Combined with Tritan's outstanding chemical resistance and hydrolytic stability, these features give molded products enhanced durability in the dishwasher environment, which can expose products to high heat, humidity, and aggressive cleaning agents.

Tritan EX401 can be converted into parts using injection molding, injection stretch blow molding (ISBM), and extrusion blow molding techniques.

Tritan EX401 may be used in repeated use food contact articles under United States Food and Drug Administration (FDA) regulations. Contact Eastman representative for details on global food contact regulatory clearances.

Tritan EX401 is included in Eastman Chemical Company’s Customer Notification Procedure which details our policy for customer notification when significant changes are made in Tritan EX401 sold into the infant care market. This procedure provides the infant care industry an added layer of confidence in the consistent quality and performance of Tritan.

Typical Properties

PropertyaTest MethodbTypical Value, Unitsc
General Properties
Specific GravityD 7921.17
Injection Mold ShrinkageD 9550.005-0.007 mm/mm (0.005-0.007 in./in.)
ISBM Blow Mold ShrinkageeEMN0.012-0.016 mm/mm
ISBM Bottle Properties
Fill Volume Shrinkage - Boiling, 1 hrdEMN<1 %
Fill Volume Shrinkage - Boiling, 2 hrdEMN<1.5 %
Fill Volume Shrinkage - DishwasherdEMN<1 %
Microwave Steam Sterilization (Total Energy=Wattage*Minutes)dEMNUp to 11,200 W-min
Microwave Boiling, Oven PowerdEMNUp to 2200 W
Thermal Shock, Water Immersion, 98 C to 35 CdEMNNo effect
Mechanical Properties (ISO Method)
Tensile Strength @ YieldISO 52745 MPa
Tensile Strength @ BreakISO 52749 MPa
Elongation @ YieldISO 5277 %
Elongation @ BreakISO 527130 %
Tensile ModulusISO 5271624 MPa
Flexural ModulusISO 1781531 MPa
Izod Impact Strength, Notched 
     @ 23°CISO 18066 kJ/m2
     @ -40°CISO 18014 kJ/m2
Mechanical Properties
Tensile Stress @ YieldD 63844 MPa (6400 psi)
Tensile Stress @ BreakD 63853 MPa (7700 psi)
Elongation @ YieldD 6387 %
Elongation @ BreakD 638140 %
Tensile ModulusD 6381585 MPa (2.28 x 105 psi)
Flexural ModulusD 7901585 MPa (2.28 x 105 psi)
Flexural Yield StrengthD 79066 MPa (9600 psi)
Rockwell Hardness, R ScaleD 785115
Izod Impact Strength, Notched 
     @ 23°C (73°F)D 256650 J/m (12.2 ft·lbf/in.)
     @ -40°C (-40°F)D 256126 J/m (2.4 ft·lbf/in.)
Impact Strength, Unnotched 
     @ 23°C (73°F)D 4812NB
     @ -40°C (-40°F)D 4812NB
Impact Resistance (Puncture), Energy @ Max. Load 
     @ 23°C (73°F)D 376359 J (43 ft·lbf)
     @ -40°C (-40°F)D 376363 J (46 ft·lbf)
Optical Properties
Total TransmittanceD 100392 %
HazeD 1003<1 %
Properties After Boiling
     After 8 hr boilingEMN<1 %
Izod Impact Strength, Notched, 23 C 
     After 8 hr boilingEMN650 J/m
     After re-equilibration 643 J/m
Tensile Stress @ Yield 
     After 8 hr boilingEMN44 MPa
     After re-equilibration 45 MPa
Elongation @ Yield 
     After 8 hr boilingEMN7 %
     After re-equilibration 6.5 %
Thermal Properties
Deflection Temperature 
     @ 0.455 MPa (66 psi)D 648109 °C (228 °F)
     @ 1.82 MPa (264 psi)D 64892 °C (198 °F)
Typical Drying Conditions
Drying Temperature 88 °C (190 °F)
Drying Time 4-6 hrs
Dewpoint < -35 °C (< -30 °F)
Typical Processing Conditions - Extrusion Blow Molding (EBM)
Processing Melt Temperature 240-250 °C (465-480 °F)
Mold Temperature 25-45 °C (80-110 °F)
Typical Processing Conditions - Injection Molding
Processing Melt Temperature 260-282 °C (500-540 °F)
Mold Temperature 38-66 °C (100-150 °F)
Typical Processing Conditions - Injection Stretch Blow Molding (ISBM)
Processing Melt Temperature 270-285 °C (520-545 °F)
Injection Mold Temperature 60-70 °C (140-160 °F)
Preform Temperature at Blow 185-195 °C (365-385 °F)
Primary Blow Pressure 0.03-0.08 MPa (4-12 psi)
Secondary Blow Pressure 0.2-0.3 MPa (25-40 psi)
Blow Mold Temperature 80-90 °C (175-195 °F)
Residual Stress Under Polarized Light, Fringe CountEMN<= 3

aUnless noted otherwise, all tests are run at 23°C (73°F) and 50% relative humidity.
bUnless noted otherwise, the test method is ASTM.
cUnits are in SI or US customary units.
dProperties are typical of bottles made with proper processing to minimize residual stress.
eApplies to the stretch blow molded portion only (not the injection molded preform).

Technical Disclaimer
Eastman makes no representation and disclaims any warranty that the material in any particular shipment will conform exactly to the values given.  Values as well as the performance of the final molded article may be affected by various factors such as the part design, mold design or tooling,  drying, processing conditions as well as coloring or pigmentation of the product. No warranty of merchantability or fitness for use is made, and nothing herein waives any of the Seller''s conditions of sale. You must make your own determination of the suitability of this product in your specific application due to the many factors (e.g. design, processing and conditions of use) that affect the performance of the final molded article.  Suitability of use should be evaluated with appropriate testing and analysis. The processing melt temperature and mold temperature refer to the actual resin melt temperature and actual mold surface temperature respectively. Consider overall resin residence time, part shot size utilization and part geometry to set appropriate processing melt temperature and mold temperature in order to minimize IV loss and maximize molded part performance.

Properties reported here are based on limited testing. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.

9/12/2019 11:52:30 AM