Applications

Momentive SilFORT™ AS4700-SP1 Hardcoat

  • Item No: SilFORT™ AS4700-SP1 with SHP470-FT2050 Primer
  • Manufacturer: Momentive
  • Color:
    • Primer Coat: Amber
    • Hardcoat: Pale Orange
  • Cure Type: Thermal curing
  • Package Size:
    • SilFORT AS4700-SP1 Hardcoat: 25 kg
    • SilFORT SHP470-FT2050 Primer Coat: 25 kg, 180 kg
  • Shelf Life:
    • Primer Coat: 48 months (stored below 43°C)
    • Hardcoat: 10 months (stored below 10°C)

SilFORT™ AS4700-SP1 Hardcoat with SHP470-FT2050 Primer Coat is a high-performance, thermally cured 2-layer coating system designed to protect clear, tinted, and black plastic substrates from chemicals, abrasion, and weathering. It offers exceptional resistance against UV-induced discoloration, yellowing, hazing, and scratching.

This advanced coating system allows for both flow and spray coating applications, providing greater design flexibility for complex polycarbonate parts used in automotive and industrial applications. It is optimized for ADAS (Advanced Driver Assistance Systems) sensor covers, forward headlight lenses, and automotive glazing parts, ensuring a high transmission rate for optical, LiDAR, and radar signals.


Key Features & Benefits

✅ Exceptional Weatherability – Long-term UV resistance, minimizing yellowing and hazing.
✅ High Scratch & Abrasion Resistance – Protects against wear and mechanical damage.
✅ Excellent Chemical Resistance – Shields surfaces from solvents, fuels, and industrial chemicals.
✅ High Gloss, Easy-to-Clean Surface – Enhances visual clarity and surface protection.
✅ Improved Design Flexibility – Suitable for spray and flow coating applications.
✅ High Optical Transmission – Maintains ADAS signal clarity (LiDAR, Radar, Optical).

Property SilFORT SHP470-FT2050 Primer Coat SilFORT AS4700-SP1 Hardcoat
Physical Form Liquid Liquid
Color Amber Pale Orange
Solids Content (% by weight) ~9% ~22.5%
Density (@ 25°C, g/cm³) ~0.95 ~0.94
Kinematic Viscosity (@ 25°C, cSt) ~85 ~5
Acetic Acid Content (%) N/A 4.5 – 6.5
Electrical Resistance (kOhm) ~40 0
Shelf Life 48 months (below 43°C) 10 months (below 10°C)
Application Methods Spray, Flow, Dip Spray, Flow, Dip
Recommended Coating Thickness (µm) 1.2 – 4 µm 4 – 8 µm (max. 12 µm)
Reducing Solvents 1-Methoxy-2-Propanol, Diacetone Alcohol, 2-Butanone, 4-Methyl-2-Pentanone 1-Butanol, 2-Propanol, 1-Methoxy-2-Propanol, Acetic Acid

Potential Applications

📌 Automotive Exterior Polycarbonate Parts – Sunroofs, windows, trim pieces.
📌 ADAS Sensor Covers – Ensures high optical and LiDAR transmission.
📌 Forward Headlight Lenses – Enhanced UV resistance and clarity.
📌 High-Performance Polycarbonate Films & Sheets – Provides abrasion and weather protection.


Processing & Storage Guidelines

✅ Application Environment: Must be applied in a cleanroom environment (ISO 14644-1 Class 6 or better).
✅ Storage Conditions:

  • Primer Coat: Store below 43°C (Shelf life: 48 months).
  • Hardcoat: Store below 10°C (Shelf life: 10 months).
    ✅ Usage Timeline:
  • Once ambient temperature is reached, use within 1 week.
  • Re-refrigerate if not used within 24 hours.
    ✅ Coating Precautions: The hardcoat and its solvents are not miscible with the primer, so they must be applied separately.
    ✅ Surface Temperature: Before applying, ensure the part surface temperature is below 35°C.

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