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Technical Data Sheet
Eastar™ Copolyester BR403

Applications

Oral hygiene

Product Description

Eastar™ BR403 copolyester is a water-clear polymer that is great for toothbrush applications. It will not crystallize and thus offers wider processing latitude than conventional crystallizable polyesters while still providing an excellent combination of clarity, toughness, and melt strength.

This product has been GREENGUARD INDOOR AIR QUALITY CERTIFIED
The GREENGUARD INDOOR AIR QUALITY CERTIFIED Mark is a registered certification mark used under license through the GREENGUARD Environmental Institute (GEI). GEI is an industry-independent, non-profit organization that oversees the GREENGUARD Certification Program. The GREENGUARD Certification Program is an industry independent, third-party testing program for low-emitting products and materials for indoor environments. For more information about GEI and to obtain printable certificates for Eastman™ Copolyesters, visit www.greenguard.org. Choose Eastman Chemical Company under the Manufacturer category and click search to display a list of our products.

Typical Properties

Property^a	Test Method^b	Typical Value, Units^c
Mechanical Properties
Flexural Modulus	D 790	2060 MPa (3.0 x 10⁵ psi)
Rockwell Hardness, R Scale	D 785	108
Izod Impact Strength, Notched
@ 23°C (73°F)	D 256	105 J/m (1.85 ft·lbf/in.)
@ -40°C (-40°F)	D 256	40 J/m (0.79 ft·lbf/in.)
Optical Properties (ASTM Method)
Bio-based Content		0 %
Optical Properties
Haze	D 1003	0.2 %
Total Transmittance	D 1003	90 %
Thermal Properties
Crystallization half time		2500 min.
Typical Processing Conditions
Drying Temperature		70 °C (160 °F)
Drying Time		6 hrs
Processing Melt Temperature		249-271 °C (480-520 °F)
Mold Temperature		16-38 °C (60-100 °F)

^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.

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.{TAB}

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.

6/6/2019 12:17:19 PM