Transparent High Refractive Index Sols

Transparent high refractive index materials are of interest as a coating additive for reducing reflection loss in a number of technologically important applications such as coatings for TFT/LCD displays and LED lighting. NYACOL® offers five material types which are relatively high in refractive index and the particle size is small enough that the dispersion is optically transparent.

We developed an arbitrary method for estimating the refractive index and density of the solid phase of our sols. This data is presented below. In formulating the high RI coating, the user will need these parameters to determine the amount of our sol to use to meet a given RI target. The choice of oxide will depend on the chemistry of the coating and the coupling agent options available.

Product NameOxideSol Wt.%Solid Phase RISolid Phase DensityCarrier
NYACOL® SN15SNO2151.84.25Water
NYACOL® JL627SSb2O5281.703.09Water
NYACOL® Zr10/15ZrO2151.864.01Water
NYACOL® TiSol ATiO2202.073.22Water
NYACOL® Ceria acetateCeO2202.025.09Water
NYACOL® Zirconia acetateZrO2201.682.74Water
Looking for More Options?

In some cases our standard materials are not suitable for a customer’s particular application, or a different composition is required. In these cases, we will consider a custom development project with our customers. We generally proceed under a Non-Disclosure Agreement and we will do the project in such a way that the material can be readily scaled up.

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