Sabic LEXAN™ PC Resin OQ2720
Plastic Granules
SABIC Lexan OQ2720 UV-stabilized
LEXAN™ OQ2720 resin is a 7.5 MFR polycarbonate. UV stabilized. Produced in dedicated equipment with stringent production control conditions. For ophthalmic or safety lens market. Available in transparent and translucent colors.
Typical property data
Physical Properties
- Specific Gravity: 1.2 (ASTM D792)
- Mold Shrinkage (flow, 3.2 mm): 0.5 – 0.7% (SABIC method)
- Melt Flow Rate (300°C/1.2 kgf): 7.5 g/10 min (ASTM D1238)
Mechanical Properties
- Tensile Stress, yield (Type I, 50 mm/min): 62 MPa (ASTM D638)
- Tensile Stress, break (Type I, 50 mm/min): 68 MPa (ASTM D638)
- Tensile Strain, break (Type I, 50 mm/min): 135% (ASTM D638)
- Flexural Stress, yield (1.3 mm/min, 50 mm span): 96 MPa (ASTM D790)
- Flexural Modulus (1.3 mm/min, 50 mm span): 2340 MPa (ASTM D790)
Impact Properties
- Izod Impact, notched (23°C): 907 J/m (ASTM D256)
- Tensile Impact Strength (Type S): 640 kJ/m² (ASTM D1822)
- Instrumented Dart Impact Energy @ peak (23°C): 65 J (ASTM D3763)
Thermal Properties
- HDT (1.82 MPa, 6.4 mm, unannealed): 132°C (ASTM D648)
Optical Properties
- Light Transmission (2.54 mm): 89% (ASTM D1003)
- Haze (2.54 mm): 0.6% (ASTM D1003)
- Refractive Index: 1.586 (ASTM D542)
- Yellowness Index: 0 (ASTM D1925)
Injection Molding
- Drying Temperature: 120°C
- Drying Time: 3 – 4 hours
- Drying Time (Cumulative): 48 hours
- Maximum Moisture Content: 0.02%
- Melt Temperature: 310 – 330°C
- Nozzle Temperature: 305 – 325°C
- Zone Temperatures:
- Front (Zone 3): 310 – 330°C
- Middle (Zone 2): 300 – 320°C
- Rear (Zone 1): 290 – 310°C
- Mold Temperature: 80 – 115°C
- Back Pressure: 0.3 – 0.7 MPa
- Screw Speed: 40 – 70 rpm
- Shot to Cylinder Size: 40 – 60%
- Vent Depth: 0.025 – 0.076 mm
Features & Benefits
Superior Optical Clarity & Consistency
It delivers high light transmission (89%) with minimal haze, ensuring excellent visual performance for lenses and protective eyewear.
Exceptional Impact Resistance for Safety
Outstanding toughness reduces breakage risk, enhancing product durability in safety-critical applications like industrial lenses.
Enhanced UV Stability & Weatherability
UV-stabilized formulation maintains clarity and prevents yellowing over time, extending product lifespan in both indoor and outdoor use.
