Covestro Makrolon® AG2677 PC Resin
Plastic Granules
Makrolon AG2677 Polycarbonate Granules 20% glass fiber reinforced
Covestro Makrolon® AG2677 is a UV-stabilized, medium-viscosity polycarbonate resin engineered for automotive glazing. With an MVR of 12 cm³/10 min (300°C/1.2 kg), it offers easy mold release and exceptional clarity—exclusively in transparent colors. Ideal for high-performance optical applications demanding durability and aesthetics.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt volume-flow rate (300 °C/1.2 kg): 12 cm³/10 min (ISO 1133)
- Melt mass-flow rate (300 °C/1.2 kg): 13 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)
- Molding shrinkage (general range): 0.6–0.8% (ISO 2577)
Mechanical Properties (23 °C / 50% r.h.)
- Tensile modulus (1 mm/min): 2400 MPa (ISO 527-1, -2)
- Yield stress (50 mm/min): 67 MPa (ISO 527-1, -2)
- Yield strain (50 mm/min): 6.1% (ISO 527-1, -2)
- Nominal strain at break (50 mm/min): >50% (ISO 527-1, -2)
- Stress at break (50 mm/min): 70 MPa (ISO 527-1, -2)
- Tensile creep modulus (1000 h): 1900 MPa (ISO 899-1)
- Flexural modulus (2 mm/min): 2400 MPa (ISO 178)
- Flexural strength (2 mm/min): 98 MPa (ISO 178)
- Charpy notched impact strength (23 °C, 3 mm): 70 kJ/m² (ISO 21305/ISO 179/1eA)
- Charpy notched impact strength (-30 °C, 3 mm): 14 kJ/m² (ISO 21305/ISO 179/1eA)
- Puncture impact properties (23 °C): 5400 N (ISO 6603-2)
Thermal Properties
- Glass transition temperature: 144 °C (ISO 11357-1, -2)
- Temperature of deflection under load (1.80 MPa): 124 °C (ISO 75-1, -2)
- Temperature of deflection under load (0.45 MPa): 136 °C (ISO 75-1, -2)
- Vicat softening temperature (50 N, 50 °C/h): 143 °C (ISO 306)
- Burning behavior (UL 94, 0.75 mm): V-2
- Coefficient of linear thermal expansion (23–55 °C): 0.65 x 10⁻⁴/K (ISO 11359-1, -2)
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): 0.0090 (IEC 60250)
- Electrical strength (1 mm): 34 kV/mm (IEC 60243-1)
Other Properties (23 °C)
- Density: 1200 kg/m³ (ISO 1183-1)
- Water absorption (saturation value at 23 °C): 0.30% (ISO 62)
- Water absorption (equilibrium at 23 °C / 50% r.h.): 0.12% (ISO 62)
Processing and Drying Conditions
- Melt temperature (recommended): 280–320 °C (Standard: 300 °C)
- Mold temperature: 80–120 °C
- Dry air drying temperature: 120 °C
- Dry air drying time: 2–3 hours
- Moisture content (max.): ≤0.02%
Features & Benefits
Optical Clarity & UV Resistance
It delivers 88–89% luminous transmittance (3 mm thickness) and low haze (<0.8%), ensuring crystal-clear visibility while resisting yellowing in outdoor automotive use.
Impact Resilience for Safety
It boasts 70 kJ/m² notched impact strength (23°C), enabling lightweight yet shatter-resistant glazing that meets stringent automotive safety standards.
Thermal Stability Under Load
With a heat deflection temperature of 124°C (1.8 MPa), it maintains structural integrity in high-heat environments like sunroofs or lighting housings.
Use & Applications
- Automotive Glazing: Sunroofs, side windows, and panoramic roofs (replacing glass for 50% weight savings).
- Roof Modules: Integrated solar/lighting panels requiring UV stability and optical clarity.
- Injection-Molded Components: Complex parts like headlamp lenses or sensor housings needing precision molding.