Technical datasheet

TAFMER™ DF840

Supplied byMitsui Chemicals- Last Updated on Aug 6, 2025

TAFMER™ DF840 by Mitsui Chemicals is a specialty, ethylene-based alpha-olefin elastomer (TPO) grade. It is insoluble in water and possesses low melting point, softness, elasticity and transparency.
  • Exhibits surface gloss, low specific gravity and good impact resistance at low temperatures.
  • Provides good filler containability, foamability, paintability and crosslinkability.
  • Shows PE miscibility and PP compatibility.
  • TAFMER™ DF840 is suitable for processing by injection molding.
  • Used in automotive bumpers and instrumental panels.
  • Meets FDA title 21, parts 170 to 189, FCN (food contact notification) and EU Directive 2002/72/EC.
ColorClear
AppearancePellets

Benefits

US FDA|

Transparency, High|

Gloss, High|

Crosslinkable|

Specialty Grade|

Paintable|

Food contact approved|

Soft|

Elasticity, High|

Impact Resistance, Low Temp.|

Foamable

Compliance

Food Contact Approval
Yes
Certifications & Compliance
EU Directive 2002/72/EC, FDA

Availability

Product Status:COMMERCIAL

TAFMER™ DF840 properties

Flammability properties

PropertiesValue & unitTest conditionTest method
Flash Point> 200 °C

Mechanical properties

PropertiesValue & unitTest conditionTest method
Clash-Berg Modulus9 MPaASTM D1043
Elongation at Break> 1000 %ASTM D638
Hardness, Shore A86 ASTM D2240
Tensile Strength at Break> 27 MPaASTM D638

Physical properties

PropertiesValue & unitTest conditionTest method
Density885 kg/m3ASTM D1505
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)3.6 g/10 minAt 190°C, 2.16 kgASTM D1238
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)6.7 g/10 minAt 230°C, 2.16 kgASTM D1238

Thermal properties

PropertiesValue & unitTest conditionTest method
Brittleness Temperature< -70 °CASTM D746
Melting Point66 °CMCI Method
Vicat Softening Temperature55 °C

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