Covestro Makrolon® Rx1805 RE PC Resin
Makrolon Rx1805 RE PC Resin
Covestro PC Makrolon Rx1805 RE is a medical-grade, transparent polycarbonate resin with high viscosity (6.0 cm³/10 min MVR) and lipid resistance. It’s biocompatible, withstands radiation sterilization, and offers renewable ISCC PLUS mass balance attribution—ideal for demanding medical and chemical-resistant applications.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt Volume-Flow Rate (MVR): 6.0 cm³/10 min (300 °C/1.2 kg) (ISO 1133)
- Melt Mass-Flow Rate (MFR): 6.5 g/10 min (300 °C/1.2 kg) (ISO 1133)
- Molding Shrinkage (Parallel/Normal): 0.6–0.8% (60x60x2 mm³/500 bar) (ISO 294-4, ISO 2577)
Mechanical Properties (23 °C/50 % r. h.)
- Tensile Modulus: 2400 MPa (1 mm/min) (ISO 527-1,-2)
- Yield Stress: 67 MPa (50 mm/min) (ISO 527-1,-2)
- Yield Strain: 6.3% (50 mm/min) (ISO 527-1,-2)
- Nominal Strain at Break: >50% (50 mm/min) (ISO 527-1,-2)
- Flexural Modulus: 2400 MPa (2 mm/min) (ISO 178)
- Flexural Strength: 98 MPa (2 mm/min) (ISO 178)
- Charpy Notched Impact Strength:
- 23 °C (3 mm): 80 kJ/m² (ISO 21305/ISO 179/1eA)
- -30 °C (3 mm): 16 kJ/m² (ISO 21305/ISO 179/1eA)
- Izod Notched Impact Strength:
- 23 °C (3 mm): 70 kJ/m² (ISO 21305/ISO 180/A)
- -30 °C (3 mm): 15 kJ/m² (ISO 21305/ISO 180/A)
Thermal Properties
- Glass Transition Temperature: 145 °C (10 °C/min) (ISO 11357-1,-2)
- Temperature of Deflection Under Load:
- 1.80 MPa: 126 °C (ISO 75-1,-2)
- 0.45 MPa: 138 °C (ISO 75-1,-2)
- Vicat Softening Temperature:
- 50 N; 50 °C/h: 144 °C (ISO 306)
- 50 N; 120 °C/h: 145 °C (ISO 306)
- Coefficient of Linear Thermal Expansion: 0.65 × 10⁻⁴/K (23–55 °C, Parallel/Normal) (ISO 11359-1,-2)
- Oxygen Index: 27% (ISO 4589-2)
Electrical Properties (23 °C/50 % r. h.)
Thermal Conductivity (Through-Plane): 0.20 W/(m·K) (ISO 8302)
Other Properties (23 °C)
- Water Absorption (Saturation Value): 0.30% (ISO 62)
- Water Absorption (Equilibrium Value): 0.12% (23 °C, 50 % r. h.) (ISO 62)
- Density: 1200 kg/m³ (ISO 1183-1)
- Bulk Density (Pellets): 660 kg/m³ (ISO 60)
Processing and Drying Conditions
- Injection Molding – Melt Temperature: 290–330 °C (ISO 294)
- Standard Melt Temperature: 310 °C
- Mold Temperature: 80–120 °C (ISO 294)
- Dry Air Drying Temperature: 120 °C
- Dry Air Drying Time: 2–3 hours
- Moisture Content (Max.): ≤0.02%
Features & Benefits
Sustainable Medical Compliance
This ISCC PLUS-certified resin uses bio-circular raw materials via mass balance, reducing carbon footprint while meeting strict medical safety standards (ISO 10993-1). Buyers gain eco-compliance without sacrificing performance.
Unmatched Sterilization Durability
It withstands high-energy radiation, steam (121°C), and ETO sterilization without degradation. Ensures longevity for reusable medical devices, cutting replacement costs.
High Chemical & Impact Resistance
Exceptional lipid/oil resistance (puncture energy: 70J at -30°C) and transparency. Ideal for surgical tools, lab equipment, and transparent housings exposed to harsh fluids.
Use & Applications
- Medical Devices: Surgical instruments, IV connectors, dialysis housings.
- Sterilization-Ready Components: Autoclavable trays, ETO-compatible seals.
- Industrial Molding: Chemical-resistant labware, transparent covers for diagnostics.