Sabic LEXAN™ PC Resin OQ4120R
Plastic Granules
SABIC Lexan OQ4120R Optical Grade
LEXAN™ OQ4120R resin is a 25 MFR polycarbonate, MVR of 21. UV stabilized. Mold release. Optical grade with UV cut-off up to 400 nm, greater optical purity than standard grades. Suitable for sunglass and sunvisor markets.
Associated Documents
TDS Europe
Typical property data
Physical Properties
- Mold Shrinkage on Tensile Bar, flow: 0.5 – 0.7% (SABIC method)
- Density: 1.2 g/cm³ (ISO 1183)
- Water Absorption (23°C, saturated): 0.35% (ISO 62-1)
- Moisture Absorption (23°C, 50% RH): 0.15% (ISO 62)
- Melt Volume Rate (MVR) at 300°C/1.2 kg: 21 cm³/10 min (ISO 1133)
Mechanical Properties
- Tensile Properties (ISO 527):
- Tensile Stress, yield (50 mm/min): 63 MPa
- Tensile Stress, break (50 mm/min): 70 MPa
- Tensile Strain, yield (50 mm/min): 6%
- Tensile Strain, break (50 mm/min): 100%
- Tensile Modulus (1 mm/min): 2350 MPa
- Flexural Properties (ISO 178):
- Flexural Stress, yield (2 mm/min): 90 MPa
- Flexural Modulus (2 mm/min): 2300 MPa
- Hardness:
- Ball Indentation Hardness: 95 MPa (ISO 2039-1)
- Abrasion Resistance:
- Taber Abrasion (CS-17, 1 kg): 10 mg/1000 cycles (SABIC method)
Impact Properties
- Izod Impact, Unnotched (ISO 180/1U):
- +23°C: NB (No Break)
- -30°C: NB (No Break)
- Izod Impact, Notched (ISO 180/1A):
- +23°C: 70 kJ/m²
- -30°C: 12 kJ/m²
- Charpy Impact, V-notch (ISO 179/1eA):
- +23°C: 73 kJ/m²
- -30°C: 14 kJ/m²
- Charpy Impact, Unnotched (ISO 179/1eU):
- +23°C: NB (No Break)
- -30°C: NB (No Break)
Thermal Properties
- Thermal Conductivity: 0.2 W/m-°C (ISO 8302)
- Coefficient of Thermal Expansion (CTE) (23°C to 80°C, flow): 7.E-05 1/°C (ISO 11359-2)
- Vicat Softening Temperature (ISO 306):
- Rate B/50: 140°C
- Rate B/120: 141°C
- Heat Deflection Temperature (HDT) (ISO 75):
- HDT/Be (0.45 MPa): 133°C
- HDT/Ae (1.8 MPa): 122°C
- Relative Temperature Index (UL 746B):
- Electrical: 130°C
- Mechanical (with impact): 125°C
- Mechanical (without impact): 125°C
- Ball Pressure Test (125°C ± 2°C): Passes (IEC 60695-10-2)
Optical Properties
- Light Transmission (2.54 mm): 88 – 90% (ASTM D1003)
- Haze (2.54 mm): <0.8% (ASTM D1003)
- Refractive Index: 1.586 (ISO 489)
Electrical Properties
- Volume Resistivity: >1.E+15 Ω·cm (IEC 60093)
- Surface Resistivity: >1.E+15 Ω (IEC 60093)
- Dielectric Strength (in oil, 3.2 mm): 17 kV/mm (IEC 60243-1)
- Relative Permittivity (50/60 Hz): 2.7 (IEC 60250)
- Dissipation Factor (50/60 Hz): 0.001 (IEC 60250)
- Dissipation Factor (1 MHz): 0.01 (IEC 60250)
Flame Characteristics
- UL Recognized, 94HB Flame Class Rating (UL 94):
- 0.75 mm
- 3 mm
- Glow Wire Flammability Index (850°C, passes at 1 mm): Passes (IEC 60695-2-12)
- Oxygen Index (LOI): 25% (ISO 4589)
Injection Molding
- Drying Temperature: 120°C
- Drying Time: 2 – 4 hours
- Maximum Moisture Content: 0.02%
- Melt Temperature: 280 – 300°C
- Nozzle Temperature: 270 – 290°C
- Front Zone (Zone 3) Temperature: 280 – 300°C
- Middle Zone (Zone 2) Temperature: 270 – 290°C
- Rear Zone (Zone 1) Temperature: 260 – 280°C
- Hopper Temperature: 60 – 80°C
- Mold Temperature: 80 – 100°C
Features & Benefits
Superior Clarity with UV Guard
This OQ4120R resin offers over 88% light transmission with minimal haze, and its integrated UV cut-off up to 400 nm protects products and users from sun damage, ideal for lenses and protective covers.
High Impact Resistance
With excellent notched impact strength, components made from this resin withstand drops, impacts, and stress, reducing breakage and replacement costs in eyewear and visors.
Easy Processing with Mold Release
The compound includes a mold release agent and has predictable shrinkage, allowing for faster cycle times, easier demolding, and higher production efficiency in injection molding.
