Product Data Sheet

Drystar 0827 Copolyester

Application/Uses
  • Injection molding
Product Description

Eastman is pleased to announce the launch of DRYSTAR* copolyesters. This new product-line is designed to meet the needs of converters seeking value-added solutions to their drying requirements of copolyesters. Eastman’s copolyesters are highly valued for their excellent balance of properties such as superior aesthetics, impact strength, and chemical resistance. These properties can be optimally realized when the resins are properly dehydrated in accordance to recommended drying conditions and equipment.

Recognizing this value, Eastman conceived DRYSTAR copolyesters to allow converters with limited access to desiccant dryers to achieve these optimizations. In addition, some converters with desiccant dryers may still find DRYSTAR copolyesters value-adding to attain production flexibility and cost saving by removing the drying process prior to injection molding, profile extruding, or extrusion blow molding copolyesters. The initial launch comprises of the commercialization of four grades of DRYSTAR copolyesters and Eastman has on-going program to extend this strategic product-line in the future.

*DRYSTAR is only available in the Asia Pacific Region.


Typical Properties (Preliminary)
 
 
 
Specific Gravity     D 792  1.27 
Mold Shrinkage     D 955  0.002-0.005 mm/mm
 
Tensile Stress @ Yield     D 638  50 MPa (7200 psi)
Tensile Stress @ Break     D 638  25 MPa (3600 psi)
Elongation @ Yield     D 638  4%
Elongation @ Break     D 638  36%
Flexural Modulus     D 790  2200 MPa (3.2 )
Flexural Strength     D 790  73 MPa (10500 psi)
Rockwell Hardness, R Scale     D 785  104 
Izod Impact Strength, Notched 
  @ 23°C (73°F)
D 256  85 J/m (1.5 ft·lbf/in.)
  @ -40°C (-40°F)
D 256  39 J/m (0.7 ft·lbf/in.)
Impact Strength, Unnotched 
  @ 23°C (73°F)
D 4812  NB 
  @ -40°C (-40°F)
D 4812  NB 
Impact Resistance (Puncture), Energy @ Max. Load 
  @ 23°C (73°F)
D 3763  31 J (23 ft·lbf)
  @ -40°C (-40°F)
D 3763  47 J (35 ft·lbf)
 
Deflection Temperature 
  @ 0.455 MPa (66 psi)
D 648  65°C (149°F)
  @ 1.82 MPa (264 psi)
D 648  60°C (140°F)
 
Haze     D 1003  0.4%
Total Transmittance     D 1003  90%
 
Drying Temperature  d     70°C (160°F)
Drying Time  d     6 hrs
Processing Melt Temperature       249-271°C (480-520°F)
Mold Temperature       16-38°C (60-100°F)
Comments
Properties reported here are based on limited testing. Eastman makes no representation that the material in any particular shipment will conform to the values given.

07-Sep-2006 10:36:48 AM