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What is Zirconium Oxide High Refractive Index Coatings?Features, types, and applications are introduced.

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Representative of high refractive index fillers are titanium oxide and zirconium oxide. In addition to its high refractive index, zirconium oxide has a high transparency and many industrially superior features such as toughness and heat resistance, and is therefore commonly used as a coating agent for optical applications.
The features, types, and applications of high refractive index coatings using zirconium oxide are introduced here.

What is Zirconium Oxide High Refractive Index Coatings?

Zirconium oxide is also known as zirconia, and is also called imitation diamond because of its transparency and refractive index close to diamond in the jewelry industry.
It is industrially known as a ceramic with excellent toughness, heat resistance, and chemical resistance. Zirconium oxide is also one of the high refractive index materials. Although it does not extend to the refractive index of titanium oxide, it is often used in thin film coatings where transparency is required because of its higher transparency compared to titanium oxide.
TOKUSHIKI has developed a high refractive index coating agent using this zirconium oxide. In addition to the regular type with excellent high refractive index, UV cut type which cuts the wavelength in the UV region is available. It has high concentration but low viscosity, so it is excellent in workability.
Further, depending on the type of filler such as resin or metal oxide to be added, it can be customized, for example, by increasing the hardness in addition to the properties of the UV cut described above.

Application and lineup of Zirconium Oxide High Refractive Index Coatings

Applicaton: Optical material coating agent
Lineup:
Product name Filler type Resin refractive index Features
AUP-4000 Atomization ZrO2 1.62 Normal type
AUP-4001 Atomization ZrO2 1.64 Normal type
AUP-4012 Metal oxide filler mixture 1.64 UV Cut Type (Emphasis on Transmittance)
AUP-4013 Metal oxide filler mixture 1.64 UV cut type (emphasis on UV cut rate)

Zirconium Oxide High Refractive Index Coatings(normal)
High Refractive Index Coating Agent (UV Cut Type)


Zirconium Oxide High Refractive Index Coatings(under development)




Summary

  • TOKUSHIKI has developed a high refractive index coating agent using zirconium oxide. In addition to our regular type with excellent high refractive index and transparency, we offer UV-cut types that cut wavelengths in the UV region.
  • The high refractive index coatings of zirconium oxide of TOKUSHIKI is highly concentrated but low-viscosity, so it is excellent in workability.
  • High refractive index coatings using zirconium oxide of TOKUSHIKI can impart various properties depending on the type of filler such as resin and metal oxide to be added.

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