Fluorene-based acrylate
High refractive index, High heat resistance, Low birefringence
The acrylate of fluorene, for its three-dimentional structure of bulky cardo,
promises the properties that you have not seen in conventional acrylate.
promises the properties that you have not seen in conventional acrylate.
Feature
High refractive index
High heat resistance
Low shrinkage by curing
Application
Physical property data
| Acrylate monomer | Mixture | |||||
|---|---|---|---|---|---|---|
| Product name |
OGSOL EA-0200 |
OGSOL EA-0250P (the 50% PGMEA dilution OGSOL EA-0200) |
OGSOL EA-0300 |
OGSOL GA-5060P |
OGSOL EA-F5710 |
|
| Feature | High refractive index High heat resistance |
High refractive index High heat resistance |
High flexibility High heat resistance |
High refractive index High hardness |
High refractive index Solvent-free |
|
| The number of functional groups | Bifunctional acrylate | Bifunctional acrylate | Bifunctional acrylate | Bifunctional epoxy acrylate | Formulation (EA-0200／m-phenoxybenzyl acrylate) |
|
| Before Curing |
Refractive index (589nm:D line, 25℃) |
1.616 | 1.504 | 1.555 | 1.620 | 1.601 |
| Solvent presence | 5% toluene | 50% PGMEA | Solventless | 40% PGMEA | Solventless | |
| Viscosity (25℃) [mPa・s] |
>100,000 | <50 | 6,000-8,000 | 500-2,500 | 8,000-10,000 | |
| After Curing |
Refractive index (589nm:D line, 25℃) |
1.626 | 1.626 | 1.576 | 1.650 | 1.623 |
| Tg（DSC）[℃] | 211 | 211 | 17 | 228 | 127 | |
| Volume shrinkage[%] | 0.5 | 0.5 | 0.7 | No data | 6.3 | |
| Water absorption[%] | 0.08 | 0.08 | 2.6 | No data | 0.06 | |
Total light transmittance
High transmittance in the visible light range makes the light sorce be effective.
Thermal stability evaluation
| Product name | 5% weight reduction temperature[℃] |
|---|---|
| EA-0200 | 416 |
| EA-0300 | 382 |
| GA-5060P | 386 |
| Bis-A diacrylate | 375 |
Test conditon: TG-DTA(Measurement of weight reduction with heat)
Photopolymerization intiator: 3phr Irgacure 184
Integrated UV light intensity: 500mJ/cm2
Thickness: 2mm
Low shrinkage by curing
An improved example of cure shrinkage by blending a multifunctional acylate
Fluorene aclyate has a feature such as low cure shrinkage by UV curing because of bulky 3D-sturucture.
∗ Values above are for references only, not guaranteed for the products.
