Surface-treated spherical strontium titanate particulate powder, dispersion and resin composition

Abstract

The spherical strontium titanate fine particle powder having an average primary particle size of 50 nm or less and having been surface-treated with a surface treatment agent in an amount of 5 to 30% by weight, is fine and spherical, so that a transparent composite film can be obtained. In addition, the surface treatment improves the solvent affinity of the surface of the fine particles, so that a powder, dispersion, and resin composition with high dispersion stability can be prepared, thus, a composite thin film without white turbidity can be provided.

Dependencies are inferred from the claim text.