Covestro Makrolon® 1260 PC Resin
Makrolon® 1260 PC Resin injection molding Grade
Makrolon 1260 is an impact-modified, low-viscosity polycarbonate resin offering exceptional transparency, toughness, and heat resistance (deflection up to 135°C). Ideal for high-stress applications, it delivers dimensional stability, easy mold release, and electrical insulation—perfect for automotive, medical, and protective equipment.l components.
Typical property data
Physical Properties (Rheological)
- Melt volume-flow rate (MVR): 33 cm³/10 min (300 °C/1.2 kg, ISO 1133)
- Melt mass-flow rate (MFR): 36 g/10 min (300 °C/1.2 kg, ISO 1133)
- Molding shrinkage (parallel): 0.65% (ISO 294-4)
- Molding shrinkage (normal): 0.70% (ISO 294-4)
- Molding shrinkage (range): 0.5–0.7% (ISO 2577)
Mechanical Properties (23 °C/50 % r. h.)
- Tensile modulus: 2350 MPa (1 mm/min, ISO 527-1,-2)
- Yield stress: 63 MPa (50 mm/min, ISO 527-1,-2)
- Yield strain: 5.8% (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: 93 MPa (2 mm/min, ISO 178)
- Charpy notched impact strength (23 °C, 3 mm): 55 kJ/m² (ISO 21305/ISO 179/1eA)
- Izod notched impact strength (23 °C, 3 mm): 50 kJ/m² (ISO 21305/ISO 180/A)
- Puncture impact properties – max force (23 °C): 4800 N (ISO 6603-2)
Thermal Properties
- Glass transition temperature (Tg): 142 °C (10 °C/min, ISO 11357-1,-2)
- Temperature of deflection under load (1.80 MPa): 122 °C (ISO 75-1,-2)
- Vicat softening temperature: 142 °C (50 N, 50 °C/h, ISO 306)
- Coefficient of linear thermal expansion (parallel/normal): 0.7 × 10⁻⁴/K (23–55 °C, ISO 11359-1,-2)
- Burning behavior (UL 94): V-2 (0.75 mm)
Electrical Properties (23 °C/50 % r. h.)
- Relative permittivity (100 Hz): 3.1 (IEC 60250)
- Dissipation factor (100 Hz): 10 × 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: 34 kV/mm (1 mm, IEC 60243-1)
Other Properties (23 °C)
- Density: 1200 kg/m³ (ISO 1183-1)
- Water absorption (saturation): 0.30% (ISO 62)
Processing and Drying Conditions
- Injection molding melt temperature: 280–320 °C (ISO 294)
- Mold temperature: 80–120 °C (ISO 294)
- Drying temperature: 120 °C (dry air, 2–3 h)
- Moisture content (max): ≤0.02%
Features & Benefits
Extreme Impact Resistance
With 55 kJ/m² notched impact strength (23°C), it prevents cracking in safety gear and automotive parts, ensuring user protection and product longevity.
Reliable High-Temperature Performance
It deflects heat up to 135°C (0.45 MPa) and achieves V-2 flammability rating. Ideal for electronics, lighting, and appliances exposed to thermal stress.
Effortless Processing & Precision
Low viscosity enables faster molding cycles, while <0.7% shrinkage and easy mold release simplify production of large, complex parts like bottles and barriers.
Use & Applications
- Safety Equipment: Shatterproof goggles, riot shields.
- Automotive: Headlamp lenses, interior trim.
- Medical Devices: Surgical instrument housings, transparent trays.
- Consumer Goods: 5-gallon water bottles, appliance covers.
- Building & Construction: Skylights, secure display cases.
- Electrical: Junction boxes, insulating components.