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Technical Data Sheet
Eastman Tritan™ Copolyester EX501


Applications
  • Baby bottles/sippy cups
  • Childcare items
  • Infant/toddler
Key Attributes
  • Dishwasher durability: Chemical resistance; Heat resistance; Hydrolytic stability
  • Drop impact resistance
  • Glass-like clarity
  • Global food contact regulatory clearances
  • Low taste and odor retention
  • Stain resistance
  • Sterilization capable via microwave steaming and boiling water immersion

Product Description

Tritan EX501 is an amorphous copolyester specifically developed for the Infant Care market. Its most outstanding features are consistent glass-like clarity even after multiple dishwasher cycles. Additionally, Tritan EX501 exhibits low taste and odor retention versus cPP, excellent drop impact resistance, and dishwasher durability. Tritan EX501 contains a mold release derived from vegetable based sources. Tritan EX501 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 EX501 can be converted into parts using injection molding, injection stretch blow molding (ISBM), and extrusion blow molding techniques.

Tritan EX501 copolyester may be used in repeated-use food contact articles under United States Food and Drug Administration (FDA) regulations. Contact an Eastman representative for details on global food contact regulatory clearances.

Eastman Tritan™ EX501 copolyester is included in Eastman Chemical Company’s Customer Notification Procedure which details our policy for customer notification when significant changes are made in Tritan EX501 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 7921.18
Mold ShrinkageD 9550.005-0.007 mm/mm
ISBM Bottle Properties
Fill Volume Shrinkage - Boiling, 1 hrdEMN1.9 %
Fill Volume Shrinkage - Boiling, 2 hrdEMN2.3 %
Fill Volume Shrinkage - Dishwasher (50 cycles, 75°C, Residential)dEMN0 %
Microwave Steam Sterilization (Total Energy=Wattage*Minutes)dEMNNo bubbling
Microwave Boiling (Oven Power 100%)dEMNNo bubbling
Drop Impact after 20 cycles Regular Steam SterilizationeEMNNo crazes/no impact failures
Mechanical Properties (ISO Method)
Tensile Strength @ YieldISO 52744 MPa
Tensile Strength @ BreakISO 52755 MPa
Elongation @ YieldISO 5276 %
Elongation @ BreakISO 527151 %
Tensile ModulusISO 5271538 MPa
Izod Impact Strength, Notched 
     @ 23°CISO 180114 kJ/m2
     @ -40°CISO 18014 kJ/m2
Mechanical Properties
Tensile Stress @ YieldD 63845 MPa
Tensile Stress @ BreakD 63856 MPa
Elongation @ YieldD 6386 %
Elongation @ BreakD 638176 %
Tensile ModulusD 6381516 MPa
Flexural Yield StrengthD 79072 MPa
Rockwell Hardness, R ScaleD 785109
Izod Impact Strength, Notched 
     @ 23°C (73°F)D 2561024 J/m
     @ -40°C (-40°F)D 256136 J/m
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 376357 J
     @ -40°C (-40°F)D 376366 J
Optical Properties
Total TransmittanceD 100391 %
HazeD 1003<1 %
Haze after re-equilibration (8-hr boiling) 6 %
Thermal Properties
Deflection Temperature 
     @ 0.455 MPa (66 psi)D 648101 °C
     @ 1.82 MPa (264 psi)D 64888 °C
Typical Drying Conditions
Drying Temperature 88 °C (190 °F)
Drying Time 4-6 hrs
Dewpoint < -35 °C (< -30 °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 Count <= 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.
dApplies to the stretch blow molded portion only (not the injection molded preform). Properties are typical of bottles made with proper processing to minimize residual stress.
eBottle filled with cold water, two drops of milk added to steamer water, steam sterilized 20 cycles, then drop tested.



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.


Comments
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 11:52:54 AM