Covestro Makrolon® 2456 RE CQ PC Resin
Makrolon 2456 RE CQ PC Resin Bio-circular Grade
Makrolon 2456 RE CQ is a low-viscosity polycarbonate resin offering easy mold release and versatile coloring (transparent/translucent/opaque). With an MVR of 19 cm³/10 min (300°C/1.2 kg), it ensures smooth processing and is food-contact-compliant. The CQ renewable attribution via ISCC PLUS mass balance supports sustainability goals without sacrificing performance.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt volume-flow rate (MVR): 19 cm³/10 min (300 °C/1.2 kg; ISO 1133)
- Melt mass-flow rate (MFR): 20 g/10 min (300 °C/1.2 kg; ISO 1133)
- Molding shrinkage, parallel: 0.65% (60x60x2 mm³, 500 bar; ISO 294-4)
- Molding shrinkage, normal: 0.70% (60x60x2 mm³, 500 bar; ISO 294-4)
Mechanical Properties (23 °C/50 % r. h.)
- Tensile modulus: 2400 MPa (1 mm/min; ISO 527-1, -2)
- Yield stress: 65 MPa (50 mm/min; ISO 527-1, -2)
- Yield strain: 6.2% (50 mm/min; ISO 527-1, -2)
- Nominal strain at break: > 50% (50 mm/min; ISO 527-1, -2)
- Flexural modulus: 2350 MPa (2 mm/min; ISO 178)
- Flexural strength: 97 MPa (2 mm/min; ISO 178)
- Charpy notched impact strength (23 °C, 3 mm): 65 kJ/m² (ISO 21305 based on ISO 179/1eA)
- Charpy notched impact strength (-30 °C, 3 mm): 14 kJ/m² (ISO 21305 based on ISO 179/1eA)
Thermal Properties
- Glass transition temperature: 146 °C (10 °C/min; ISO 11357-1, -2)
- Temperature of deflection under load (1.80 MPa): 125 °C (ISO 75-1, -2)
- Temperature of deflection under load (0.45 MPa): 138 °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)
Electrical Properties (23 °C/50 % r. h.)
- Relative permittivity (100 Hz): 3.1 (IEC 60250)
- Relative permittivity (1 MHz): 3.0 (IEC 60250)
- Dissipation factor (1 MHz): 90 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 (1 mm; IEC 60243-1)
Other Properties (23 °C)
- Water absorption (saturation value): 0.30% (Water at 23 °C; ISO 62)
- Water absorption (equilibrium value): 0.12% (23 °C; 50 % r. h.; ISO 62)
- Density: 1200 kg/m³ (ISO 1183-1)
Processing and Drying Conditions
- Melt temperature range: 280 – 320 °C
- Mold temperature range: 80 – 120 °C
- Drying temperature: 120 °C
- Drying time: 2–3 hours
- Maximum moisture content: ≤ 0.02%
Features & Benefits
Enhanced Sustainability & Compliance
Partially bio-circular and ISCC PLUS-certified, Makrolon® 2456 RE CQ reduces carbon footprint while meeting strict food-contact regulations—ideal for eco-conscious packaging and consumer goods.
Superior Processability
Low viscosity (19 cm³/10 min MVR) enables faster cycle times and easy filling of complex molds. Pre-dried pellets (120°C/2–3 hrs) minimize defects like bubbles or streaks in high-volume injection molding.
Robust Durability
With high impact strength (65 kJ/m² Charpy notched at 23°C) and thermal resilience (HDT 125°C at 1.8 MPa), it withstands drops, heat, and stress in demanding applications like kitchenware or tool housings.
Use & Applications
- Food Packaging: Containers, lids, and utensils.
- Consumer Goods: Transparent kitchenware, appliance housings.
- Industrial Parts: Food-processing equipment components.