Process for forming a film with photocatalytic function

摘要

A photocatalytic film is formed by: a step for forming an uncured underlayer from an organic composition on the surface of a resinous base and polymerizing the organic composition to convert the uncured underlayer into an underlayer having a hardness higher than that of the resinous base; a step for forming an uncured intermediate layer from a polymerizable and curable silicone composition on the uncured underlayer or on the underlayer to yield an uncured intermediate layer, and polymerizing the polymerizable and curable silicone composition to convert the uncured intermediate layer to an intermediate layer, the polymerizable and curable silicone composition being prepared mainly from a hydrolyzable tetrafunctional silane derivative; and a step for forming a photocatalytic layer on the intermediate layer. This process can form an intermediate layer having a very high hardness without cracking and can easily yield a photocatalytic film having a satisfactory abrasion resistance.