| abstract |
PROBLEM TO BE SOLVED: To provide a hard coat film having excellent adhesion, scratch resistance, solvent resistance and weather resistance when applied to a synthetic resin lens surface, and having no minute holes or dents on the surface, particularly a hard coating film having a high refractive index. A method for producing a coating composition that provides a coating film is provided. (A) Metal oxide sol containing an amine compound such as diisopropylamine, (B) a polycondensable silicon compound having an epoxy group such as γ-glycidoxypropyltrimethoxysilane, and (C) A method for producing a composition comprising a curing catalyst such as tris (2,4-pentanedionato) aluminum (III), wherein the component (A) and the component (B) are preferably After mixing for 6 hours or more at a temperature of 10 ° C. or more and less than 40 ° C., the obtained mixture and the component (C) are mixed. [Selection figure] None |