A refractive index of 1.86 and maintains high transparency without color even after the formation of the optical layer!
Zirconia nanoparticle dispersion (ZIRCOSTAR™)
ZIRCOSTAR is a dispersion of zirconia nanoparticles that stably disperses inorganic particles with a high refractive index. Since the particles themselves have a high refractive index of up to 1.86, adding them to a resin allows for efficient control of the refractive index of the dispersion and the optical layer that is ultimately formed.
After the formation of the optical layer, it maintains high transparency and is colorless, and the refractive index can be optimized based on the refractive indices of the particles and binder resin, as well as their mixing ratios.
By using high refractive index materials, the direction of light traveling within the layer can be controlled, which improves the efficiency of light extraction to the outside. As a result, light loss is minimized, and higher brightness is achieved.
The zirconia nanoparticles synthesized by Nippon Shokubai using a unique method have a nanoscale particle size and achieve a high refractive index. The particle surfaces are uniformly and highly coated to improve dispersion, and furthermore, UV polymerizable functional groups are introduced on each particle surface to effectively suppress aggregation during the light curing process.
You can choose from multiple lineups according to the refractive index, intended purpose, and application. There are solvent dispersion types and solvent-free monomer dispersion types available.
| ZP-153 | Type LP (development product) | |
|---|---|---|
| standard product | High refractive index products | |
| dispersing medium | Methyl ethyl ketone (MEK) | Propylene glycol monomethyl ether (PGM) |
| Particle content rate | 70 weight percent | 70 weight percent |
| Viscosity (20°C) | 10 mPa·s | 70 mPa·s |
| Refractive index of particles | 1.78 | 1.86 |
| Average particle size | 11 nm | 18 nm |
| Crystal system | Cubic crystal (main crystal system) | |
| HR-101 | HR-301 | HR-LP-1 | HR-LP-2 | |
|---|---|---|---|---|
| standard product | High refractive index products | developed product | developed product | |
| dispersing medium | Benzyl acrylate | High refractive index Acrylic monomer | Benzyl acrylate | High refractive index Acrylic monomer |
| Viscosity (20°C) | 3,000 mPa·s | 80,000 mPa·s | 500 mPa·s | 40,000 mPa·s |
| Refractive index of dispersion liquid | 1.66 | 1.69 | 1.70 | 1.75 |
| Average particle size | 11 nm | 11 nm | 18 nm | 18 nm |
| Crystal system | Cubic crystal (main crystal system) | |||
ZIRCOSTAR, a high refractive index transparent material with a high refractive index (~1.86) and colorless transparency, shows high dispersion stability as a dispersion liquid, and after being blended with resin and forming a cured film, it exhibits colorless and high transparency.
The technology for stabilizing the dispersion of nanoparticles by introducing UV polymerizable functional groups suppresses particle aggregation during the UV curing process and maintains high transparency even after UV curing.
It is well dispersed in various aromatic acrylates and multifunctional acrylates in all types.
In some overseas regions, including Japan, there is a registration for the chemical inventory or it is in a state that allows for export. For regions not listed, please contact us.
| Japan (Chemical Substances Control Law) | Taiwan (TCSI) | South Korea (KECL) | China (IECSC) | United States (TSCA) |
|---|---|---|---|---|
| Registered | Registered | Unregistered (exportable) *1 | Registered | Registered |
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