Covestro Apec® 1745 PC Resin
Plastic Granules
Apec 1745 Thermoplastic Resin Heat Resistant UV-stabilized
Covestro Apec 1745 by Covestro is a high-heat copolycarbonate resin engineered for demanding medical applications. With superb steam sterilization resistance (up to 143°C), USP Class VI compliance, ISO 10993-1 biocompatibility, and easy-release molding, it ensures safety and reliability for critical healthcare components.
Typical property data
Rheological Properties
- Melt Volume-Flow Rate (MVR): 17 cm³/10 min (330 °C/2.16 kg, ISO 1133)
- Melt Mass-Flow Rate (MFR): 17 g/10 min (330 °C/2.16 kg, ISO 1133)
- Molding Shrinkage (Parallel and Normal): 0.85% (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: 70 MPa (50 mm/min, ISO 527-1, -2)
- Yield Strain: 6.8% (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)
- Ball Indentation Hardness: 120 N/mm² (ISO 2039-1)
Thermal Properties
- Temperature of Deflection Under Load (1.80 MPa): 148 °C (ISO 75-1, -2)
- Temperature of Deflection Under Load (0.45 MPa): 161 °C (ISO 75-1, -2)
- Vicat Softening Temperature: 170 °C (50 N; 120 °C/h, ISO 306)
- Coefficient of Linear Thermal Expansion (Parallel and Normal): 0.65 × 10⁻⁴/K (23 to 55 °C, ISO 11359-1, -2)
- Burning Behavior: UL 94 HB (1.5 mm, UL 94)
- Glow Wire Test (GWFI): 850 °C (2.0 mm, IEC 60695-2-12)
Electrical Properties (23 °C/50% r.h.)
- Relative Permittivity:
- 100 Hz: 3 (IEC 60250)
- 1 MHz: 2.9 (IEC 60250)
- Dissipation Factor:
- 100 Hz: 10 × 10⁻⁴ (IEC 60250)
- 1 MHz: 80 × 10⁻⁴ (IEC 60250)
- Volume Resistivity: 1 × 10¹⁵ Ohm·m (IEC 62631-3-1)
- Surface Resistivity: 1 × 10¹⁶ Ohm (IEC 62631-3-2)
- Electrical Strength: 35 kV/mm (1 mm, IEC 60243-1)
- Comparative Tracking Index (CTI):
- Solution A: 250 (IEC 60112)
- Solution B: 125 (IEC 60112)
Other Properties (23 °C)
- Water Absorption (Saturation Value): 0.3% (Water at 23 °C, ISO 62)
- Water Absorption (Equilibrium Value): 0.12% (23 °C; 50% r.h., ISO 62)
- Density: 1170 kg/m³ (ISO 1183-1)
Material-Specific Properties
- Refractive Index: 1.578 (Procedure A, ISO 489)
- Luminous Transmittance: 88% (1 mm, ISO 13468-2)
Features & Benefits
Sterilize Without Compromise
Apec® 1745 withstands superheated steam sterilization up to 143°C, meeting USP Class VI and ISO 10993-1 standards. Ideal for reusable surgical tools, it eliminates degradation risks during repeated sterilization cycles.
Heat Resistance Where It Counts
Boasting a Vicat softening point of 170°C, this resin retains structural integrity in high-heat environments (e.g., autoclaves). Perfect for medical vessels and respiratory valves exposed to thermal stress.
Easy Molding, Lower Defects
With 17 cm³/10 min MVR flow and easy-release properties, Apec® 1745 minimizes mold sticking and warpage. Reduces scrap rates for complex parts like syringe tops and thin-wall packaging.
Use & Applications
- Injection molding
- Films for medical packaging
- Contact lens holders
- Medical vessels
- Safety valve for respiration aids
- Syringe tops