Covestro

Makrolon 2805 021644 Diffuser Grade

Makrolon 2805 021644 is a light-diffusion Polycarbonate (PC) grade (diffuser grade, colour/batch 021644), suited to LED lighting covers and luminaire optics.
Key properties: Density 1.200 g/cm³ | MVR 9.0 cm³/10min @ 300°C/1.2 kg | Tensile Strength 66 MPa | Flexural Modulus 2400 MPa.
GradeMakrolon 2805 021644 Diffuser Grade
MaterialPC
ColorDiffuser (021644)
MFI9.0 cm³/10min (MVR @ 300 °C/ 1.2 kg)
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Material Snapshot

Grade
Makrolon 2805 021644 Diffuser Grade
Material Type
PC
Manufacturer
Covestro
Brand
Makrolon
Color
Diffuser (021644)
Density
1.200 g/cm³
MFI
9.0 cm³/10min (MVR @ 300 °C/ 1.2 kg)
Supply Form
Granules

Applications

  • LED lighting diffusers and covers
  • Luminaire optics and light guides
  • Backlit signage and displays
  • Architectural lighting panels

Key Features

  • Light-diffusion polycarbonate grade
  • High light diffusion with good transmittance
  • UV stabilized
  • Injection moulding grade

Availability

Full technical specifications pending datasheet upload.

Mechanical Properties

Impact Strength
Charpy Notched: 75 kJ/m²
Izod Notched: 70 kJ/m²
Tensile Strength
66 MPa
Tensile Modulus
2400 MPa
Flexural Strength
97 MPa
Flexural Modulus
2400 MPa

Thermal & Processing

Heat Deflection Temperature
125°C at 1.8 MPa
Vicat Softening Temperature
144°C
Melt Temperature Range
Melt: 280 - 320°C / Mold: 80 - 120°C
Drying Conditions
120°C / 2-3hr
Processing Temp
Melt: 280 - 320°C / Mold: 80 - 120°C

Performance Properties

Electrical Properties
Dielectric Strength: 34 kV/mm
Volume Resistivity: 1E14 Ohm·m
Flammability Rating
V-2
Water Absorption
0.30%
Mold Shrinkage
0.6 - 0.8%

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