Covestro Makrolon® 2856 RE CQ PC Resin
Plastic Granules
Makrolon 2856 RE CQ PC Resin Partially Bio-circular Grade
Makrolon® 2856 RE CQ is a medium-viscosity, food-contact-compliant polycarbonate resin with renewable content (CQ attribution). Featuring easy release and an MVR of 9.0 cm³/10 min (300°C/1.2 kg), it’s optimized for injection molding (280–320°C melt temp) and available in transparent/opaque colors.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt Volume-Flow Rate (300 °C/1.2 kg): 9.0 cm³/10 min (ISO 1133)
- Melt Mass-Flow Rate (300 °C/1.2 kg): 10 g/10 min (ISO 1133)
- Molding Shrinkage (Parallel): 0.7 % (ISO 294-4)
- Molding Shrinkage (Normal): 0.75 % (ISO 294-4)
Mechanical Properties (23 °C/50 % r.h.)
- Tensile Modulus (1 mm/min): 2400 MPa (ISO 527-1, -2)
- Yield Stress (50 mm/min): 65 MPa (ISO 527-1, -2)
- Yield Strain (50 mm/min): 6.2 % (ISO 527-1, -2)
- Nominal Strain at Break (50 mm/min): > 50 % (ISO 527-1, -2)
- Flexural Modulus (2 mm/min): 2400 MPa (ISO 178)
- Flexural Strength (2 mm/min): 97 MPa (ISO 178)
- Charpy Notched Impact Strength (23 °C, 3 mm): 75 kJ/m² (ISO 21305/ISO 179/1eA)
- Charpy Notched Impact Strength (-30 °C, 3 mm): 16 kJ/m² (ISO 21305/ISO 179/1eA)
- Puncture Energy (23 °C): 60 J (ISO 6603-2)
- Puncture Energy (-30 °C): 65 J (ISO 6603-2)
Thermal Properties
- Glass Transition Temperature: 145 °C (ISO 11357-1, -2)
- Deflection Temperature Under Load (1.80 MPa): 125 °C (ISO 75-1, -2)
- Vicat Softening Temperature (50 N; 50 °C/h): 145 °C (ISO 306)
- Burning Behavior (UL 94, 0.75 mm): V-2 (UL 94)
- Coefficient of Linear Thermal Expansion (Parallel, 23–55 °C): 0.65 × 10⁻⁴/K (ISO 11359-1, -2)
Electrical Properties (23 °C/50 % r.h.)
- Relative Permittivity (100 Hz): 3.1 (IEC 60250)
- Dissipation Factor (100 Hz): 5 × 10⁻⁴ (IEC 60250)
- Volume Resistivity: 1 × 10¹⁴ Ohm·m (IEC 62631-3-1)
- Surface Resistivity: 1 × 10¹⁶ Ohm (IEC 62631-3-2)
- Electrical Strength (1 mm): 34 kV/mm (IEC 60243-1)
Other Properties (23 °C)
- Density: 1200 kg/m³ (ISO 1183-1)
- Water Absorption (Saturation Value, 23 °C): 0.30 % (ISO 62)
- Water Absorption (Equilibrium Value, 23 °C; 50 % r.h.): 0.12 % (ISO 62)
Processing and Drying Conditions
- Melt Temperature (Injection Molding): 280–320 °C (ISO 294)
- Mold Temperature (Injection Molding): 70–110 °C (ISO 294)
- Drying Temperature (Dry Air): 120 °C
- Drying Time (Dry Air): 4 hours
- Moisture Content (Max): ≤ 0.02 %
Features & Benefits
Renewable & Sustainable Sourcing
Partially bio-circular via ISCC PLUS mass balance, reducing carbon footprint while maintaining performance. Ideal for brands targeting eco-friendly manufacturing without compromising quality.
Superior Impact & Heat Resistance
It withstands 75 kJ/m² notched impact (23°C) and 125°C heat deflection (1.8 MPa). Perfect for durable products like power tool housings or automotive parts exposed to stress.
Food-Safe & Versatile Processing
Food-contact compliant and easy to mold (low shrinkage: 0.6–0.8%). Simplifies production of kitchenware, packaging, and medical components needing clarity and safety.
Use & Applications
- Food Packaging: Containers, lids, and beverage tumblers
- Consumer Goods: Power tool housings, appliance components
- Electrical: Connectors, switches
- Automotive: Interior trim, light covers
- Medical: Non-implant device housings