Covestro Makrolon® DQ5922 FR

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Makrolon PC Polycarbonate

Makrolon DQ5922 FR Polycarbonate Granules Flame Retardant Grade

Makrolon® DQ5942 FR is a flame-retardant, UV-stabilized polycarbonate resin with medium light diffusion and optical clarity. Ideal for safety-critical applications, it combines transparency (79% transmittance at 1mm) with a balanced MVR of 5.0 cm³/10 min (300°C/1.2 kg).

  • Character: flame retardant; MVR (300 °C/1.2 kg) 5.0 cm³/10 min; low diffusion; UV stabilized. Transparent, Optical quality.
  • Application: Extrusion; Injection molding; Light diffusion
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Key technical data (ISO)

  • Mechanical Properties
  • Tensile Modulus: 2,300 MPa
  • Yield Stress: 66 MPa
  • Izod Notched Impact (23°C): 7 kJ/m²
  • Ball Indentation Hardness: >120 N/mm²
  • HDT (1.8 MPa): 120°C | HDT (0.45 MPa): 135°C
  • Vicat Softening: 141°C
  • UL 94 Rating: V-0 (0.8mm) | 5VA (3.0mm)
  • Glow Wire Ignition (GWFT): 960°C
  • Transmittance (1mm/3mm/4mm): 79%/53%/46%
  • Half Power Angle (1mm/4mm): 25°/53°
  • Melt Temp: 280–320°C | Mold Temp: 80–120°C
  • Drying: 120°C for 2–3 hours | Max Moisture: ≤0.02%

Download

Makrolon DQ5922 FR ISO Data SheetDownload

Application

  • LED Lighting: Diffusers and covers (even light spread, UL 94 compliance).
  • Electrical Enclosures: Flame-retardant housings for switches/connectors.
  • Transparent Shields: Safety visors or machine guards (impact-resistant, V-0 rated).
  • Consumer Electronics: Light-guided panels for displays (precision diffusion).
  • Extruded Profiles: UV-stabilized architectural glazing.

Features & Benefits

Superior Flame Retardancy

It meets UL 94 V-0 (0.8mm) and 5VA (3.0mm) standards, ensuring safety in electrical/electronics and public spaces without compromising transparency.

Optimized Light Diffusion

Medium diffusion (e.g., 53% transmittance at 3mm) and controlled half-power angles (25°–53°) enable uniform lighting for LEDs and displays, reducing hotspots.

Thermal & Processing Stability

It withstands 120°C–141°C heat (Vicat/HDT) and flows smoothly at 280°C–320°C, ensuring easy injection molding or extrusion for complex parts.

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