Covestro Makrolon® 2856 PC Resin
Plastic Granules
Makrolon 2856 PC particles Food contact grades
Makrolon 2856 is a medium-viscosity, food-contact-compliant polycarbonate resin ideal for injection molding. With an MVR of 9.0 cm³/10 min (300°C/1.2 kg), it ensures easy processing and release. Available in transparent, translucent, and opaque colors, this versatile material combines durability, clarity, and safety for demanding industrial applications.
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 (60x60x2 mm³/500 bar): 0.7 % (ISO 294-4)
- Molding shrinkage, normal (60x60x2 mm³/500 bar): 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/based on ISO 179/1eA)
- Charpy notched impact strength (-30 °C/3 mm): 16 kJ/m² (ISO 21305/based on ISO 179/1eA)
Thermal Properties
- Glass transition temperature (10 °C/min): 145 °C (ISO 11357-1,-2)
- Temperature of deflection 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 (0.75 mm): UL 94 V-2 (UL 94)
- Oxygen index: 28 % (ISO 4589-2)
Electrical Properties (23 °C/50 % r. h.)
- Relative permittivity (100 Hz): 3.1 (IEC 60250)
- Relative permittivity (1 MHz): 3.0 (IEC 60250)
- Electrical strength (1 mm): 34 kV/mm (IEC 60243-1)
Other Properties (23 °C)
- Water absorption (saturation value): 0.30 % (ISO 62)
- Water absorption (equilibrium value, 23 °C/50 % r. h.): 0.12 % (ISO 62)
- Density: 1200 kg/m³ (ISO 1183-1)
- Refractive index: 1.586 (ISO 489)
- Luminous transmittance (clear, 2 mm): 89 % (ISO 13468-2)
Processing and Drying Conditions
- Melt temperature: 280–320 °C
- Standard melt temperature: 300 °C
- Mold temperature: 70–110 °C
- Dry air drying temperature: 120 °C
- Dry air drying time: 4 h
- Moisture content (max): ≤ 0.02 %
Features & Benefits
Food-Safe & Compliant
Makrolon 2856 meets stringent food-contact standards, ensuring safety for packaging, utensils, and appliances. It eliminates contamination risks while maintaining product integrity.
High Impact Resistance
With Charpy notched impact strength of 75 kJ/m² (23°C), this Makrolon 2856 polycarbonate withstands drops and impacts. Ideal for durable consumer goods, reducing breakage and replacement costs.
Easy Processing & Stability
The medium viscosity ensures smooth flow during injection molding, enabling complex designs. Low shrinkage (0.6–0.8%) minimizes warping for precise, repeatable production.
Use & Applications
- Food Packaging: Containers, lids, and storage boxes (FDA-compliant).
- Kitchenware: Blender jars, coffee machine parts, and utensils.
- Consumer Appliances: Transparent housing for mixers, juicers, and electric kettles.
- Industrial Components: Electrical enclosures, connectors, and safety visors.
- Durable Goods: Toys, reusable bottles, and point-of-sale displays.
