Water and / or organic solvent dispersion containing linked group of crystalline inorganic oxide microparticles, method for producing the same, and coating liquid for optical substrate containing linked group of crystalline inorganic oxide microparticles

摘要

To provide a coating excellent in mechanical strength (scratch resistance, abrasion resistance), appearance compatibility (cloudiness, interference fringe), adhesiveness, weather resistance, light resistance, crack resistance and optical properties (high refractive index) Disclosed is a dispersion of inorganic oxide fine particles useful for producing a coating solution for an optical base material suitable for forming a film (hard film such as hard coat layer film and primer layer film).[MEANS FOR SOLVING PROBLEMS] (1) At least one metal element M selected from the group consisting of titanium, zirconium, niobium, cerium and zinc²(2) at least one metallic element M which covers the fine particle (1) and is selected from the group consisting of zirconium, aluminum and antimony,¹(3) a composite oxide comprising a composite oxide which is the same component as the coating material and which is adjacent to the coating material and is coated with the coating material (2) A dispersion liquid of water and / or an organic solvent containing a group of linked type crystalline inorganic oxide microparticles constituted of a binding substance which binds to water and / or organic solvent.