About Opti-tec 4200 Optically Clear Polyurethane Encapsulant & Potting Compound
Opti-tec™ 4200 is a clear, water-white polyurethane resin designed for the encapsulation of electronics, LEDs, electrical products and other items where high transparency and aesthetics are important. Opti-tec 4200 optically clear potting compound has excellent non-yellowing colour stability, due to the incorporation of both UV resistant base materials and the addition of UV stabilisers and antioxidants.
Opti-tec 4200 is used for a range of applications from high value LED panels to decorative giftware (e.g. flower impregnation). It is also an excellent resin for the doming of badges, labels and decals.
Opti-tec 4200 is available in a translucent milky-white version (Opti-tec 4220).
Applications
- Protection of LEDs – LED bars, LED arrays, luminaires
- LED potting or LED encapsulation
- Electronics potting
- Dome coating of labels and badges
- High quality, clear casting
Specifications
| Typical properties | Mixed | Resin | Hardener |
|---|---|---|---|
| Colour | Clear | Clear | Clear |
| Specific gravity (g/ml) | 1.11 | 1.06 | 1.16 |
| Viscosity mPa.s @ 25°C | 600 | 600 | 600 |
| Mix ratio by weight | 0.92:1 | ||
| Mix ratio by volume | 1:1 | ||
| Curing* | |||
| Pot life | 10 minutes | ||
| Gel time | 20 minutes | ||
| Tack free cure | 40 minutes | ||
| Minimum cure schedule | 36 hours @ 20-25°C 4 hours @ 40°C 2 hours @ 60°C |
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| * typical values – will vary according to mass, film thickness and application. Higher cure temperatures will result in greater cure shrinkage and exotherm. | |||
| Cured properties | |||
| Shore hardness | A75 | ||
| Operating temperature (application & geometry dependent) | -55 to +120°C | ||
| Thermal conductivity | < 0.21 W/mK | ||
| Tensile strength | ~ 15 mPa | ||
| Elongation at break | 100% | ||
| Coefficient of linear expansion | 100-150 pp/m°C | ||
| Volume resistivity | < 1.3 x 1012 ohm.cm | ||
| Surface resistivity | < 1.4 x 1012 ohm | ||
| Dielectric strength | 20 kV/mm | ||
| Water absorption | 1.17% (30 days @ 25°C) | ||
| Refractive index | 1.47-1.48 | ||
| Opti-tec 4200 is RoHS compliant and contains 0% REACH SVHC | |||
| Safety Data Sheets |
|---|
| For the latest SDS for this product, please e-mail [email protected] |
As of 24 August 2023, adequate training is required before industrial or professional use of this product.
All Downloads
| Filename | Size | Download |
| OPT 4200 Product Data Sheet | 0.16MB |  |
Ordering Information
Packaging
Opti-tec 4200 is available in convenient side-by-side double syringe cartridges, twinpack sachets and bulk packaging.
Click here for twinpack mixing instructions.
| Part number | Description |
|---|---|
| OPT4200-50G | Clear Polyurethane Encapsulant – 50 gram double syringe cartridge |
| IDM805001 | Syringe Gun – for 50g cartridges |
| OPT4200-200G | Clear Polyurethane Encapsulant – 200 gram double syringe cartridge |
| OPT4200-250G | Clear Polyurethane Encapsulant – 250 gram twinpack sachet |
| OPT4200-1KG | Clear Polyurethane Encapsulant – 1 kilogram kit |
For best results, store away from strong oxidising agents, strong acids and strong bases. Store in a cool, well-ventilated area. Keep container tightly closed and keep in original packaging.
Let’s start by talking about your application
 01865 842842 |
 [email protected] |
