Product Features
l Variable tint UV cured coating applied via spin coating.
l Darkens upon exposure to UV light present in outdoors sunlight (process starts within a few seconds; completely converts to its deepest shade in 20 to 30 s) and reverts to a transparent state when returning indoors (transitions to fully transparent in around 2 min). The transparent to dark (and vice versa) can be repeated without deterioration in effectiveness.
l Available colors include: gray (8210), brown (8220), purple (8230), blue (8230), pink (8240), green (8250)...etc.
Product Specifications
Product Number: |
8200 |
Appearance: |
Translucent liquid with a yellow tinge |
Resin Type: |
Modified acrylate |
Solid Content (ASTM D5403): |
≥98% |
Specific Gravity: |
1.05 ± 0.02 |
Viscosity (25 °C, Brookfield LVT #4): |
200 ~ 400 cps |
Photocurable Energy (365 nm): |
200 ~ 600 mJ/cm2 |
Refractive Index (before / after cure): |
1.50 / 1.51 |
Light Transmittance (after darkening): |
<25% |
Volume Shrinkage: |
<3.5% |
Boiling 5% NaCl Solution Resistance: |
<15 min |
120 °C, 2 hr Oven Test: |
Pass |
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Applications |
Substrates |
UV cured variable tint coatings for optical lenses for photochromatic glasses. |
- CR-39 resin lenses (RI: 1.502)
- PC lenses (RI: 1.590)
- Other high RI resin lenses (RI: 1.56, 1.60, 1.64, 1.71)
|
Recommended Application Parameters
Product hue can be changed with a variety of dyes.
UV irradiation is to be applied during the spin coating procedure. Make sure in advance the UV lamp illumination values meet the conditions.
Product Package: 20 kg (in plastic drum)
Notes:
Must be stored in a cool (15 ~ 30 °C), well ventilated place, avoid direct exposure to light.
Effective for a period of 9 months after the date of manufacture.