Covestro Makrolon® 2805 RE CQ PC Resin
Plastic Granules
Makrolon 2805 RE CQ Polycarbonate Granules
Makrolon® 2805 RE CQ is Covestro’s sustainable, medium-viscosity polycarbonate resin featuring CQ renewable attributed content via ISCC PLUS mass balance. Available in transparent, translucent, or opaque colors, it combines eco-credentials with high performance for injection-molded industrial parts.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt Volume-Flow Rate: 9.0 cm³/10 min (ISO 1133; 300 °C/1.2 kg)
- Melt Mass-Flow Rate: 10 g/10 min (ISO 1133; 300 °C/1.2 kg)
- Molding Shrinkage (Parallel): 0.65 % (ISO 294-4; 60x60x2 mm³/500 bar)
- Molding Shrinkage (Normal): 0.7 % (ISO 294-4; 60x60x2 mm³/500 bar)
Mechanical Properties (23 °C/50 % r. h.)
- Tensile Modulus: 2400 MPa (ISO 527-1,-2; 1 mm/min)
- Yield Stress: 66 MPa (ISO 527-1,-2; 50 mm/min)
- Yield Strain: 6.2 % (ISO 527-1,-2; 50 mm/min)
- Nominal Strain at Break: > 50 % (ISO 527-1,-2; 50 mm/min)
- Flexural Modulus: 2400 MPa (ISO 178; 2 mm/min)
- Flexural Strength: 97 MPa (ISO 178; 2 mm/min)
- Charpy Notched Impact Strength (23 °C): 75 kJ/m² (ISO 21305/ISO 179/1eA; 3 mm)
- Izod Notched Impact Strength (23 °C): 70 kJ/m² (ISO 21305/ISO 180/A; 3 mm)
- Puncture Impact Energy (23 °C): 60 J (ISO 6603-2)
Thermal Properties
- Glass Transition Temperature: 145 °C (ISO 11357-1,-2; 10 °C/min)
- Temperature of Deflection Under Load (1.80 MPa): 125 °C (ISO 75-1,-2)
- Vicat Softening Temperature: 144 °C (ISO 306; 50 N, 50 °C/h)
- Coefficient of Linear Thermal Expansion (Parallel): 0.65 x 10⁻⁴/K (ISO 11359-1,-2; 23 to 55 °C)
Electrical Properties (23 °C/50 % r. h.)
- Relative Permittivity (100 Hz): 3.1 (IEC 60250)
- Dissipation Factor (100 Hz): 5 x 10⁻⁴ (IEC 60250)
- Volume Resistivity: 1E14 Ohm·m (IEC 62631-3-1)
- Surface Resistivity: 1E16 Ohm (IEC 62631-3-2)
- Electrical Strength: 34 kV/mm (IEC 60243-1; 1 mm)
Other Properties (23 °C)
- Density: 1200 kg/m³ (ISO 1183-1)
- Water Absorption (Saturation): 0.30 % (ISO 62; Water at 23 °C)
- Luminous Transmittance (Clear, 2 mm): 89 % (ISO 13468-2)
Processing and Drying Conditions
- Injection Molding Melt Temperature: 280–320 °C (ISO 294)
- Mold Temperature: 80–120 °C (ISO 294)
- Drying Temperature: 120 °C
- Drying Time: 2–3 hours
- Moisture Content Max: ≤ 0.02 %
Features & Benefits
Sustainable Without Compromise
It uses bio-circular raw materials (ISCC PLUS-certified), reducing carbon footprint while maintaining premium polycarbonate properties—ideal for eco-driven industries.
Tough & Reliable Performance
Exceptional impact strength (75 kJ/m² notched Charpy at 23°C) and thermal resistance (HDT 125°C @1.8 MPa) prevent cracks in demanding applications like automotive or enclosures.
Easy Processing, Lower Waste
Optimized flow (MVR 9.0 cm³/10 min) and easy-release properties enable smooth molding at 280–320°C, cutting production downtime and scrap rates.
Use & Applications
- Transparent Technical Parts: Machine guards, display covers, LED housings.
- Electrical Components: Connectors, switches (UL 125°C rating & CTI 250).
- Eco-Consumer Goods: Sustainable electronics, automotive trim, reusable packaging.
- Industrial Prototyping: High-clarity, impact-resistant functional prototypes.
