Method for manufacturing soil-resistant glass and soil-resistant glass
AssigneeAsaka Riken Co., Ltd.
InventorsYoshihiro Morito, Katsuyuki Sasazaki, Katsuyuki Nakano, Etsuo Nomura
Life of this patent
Estimating the term…
Abstract
A method for manufacturing soil-resistant glass the surface of which is covered with a coating film having a high hardness, and the soil-resistant glass are provided. A coating film comprising titania or/and titania-silica is formed by coating a glass surface with a photocatalyst solution comprising the titania or/and the titania-silica each having a photocatalytic function and heating the applied photocatalyst solution at a temperature higher than at least 100° C. The heating temperature may be a temperature higher than 100° C. and 300° C. or lower. The time of heating at the above-mentioned temperature may be at least 2 minutes or longer.
Claims6
A method for manufacturing soil-resistant glass a surface of which is covered with a coating film comprising titania-silica having a photocatalytic function,
- the method comprising coating a glass surface with a photocatalyst solution comprising the titania-silica without using an undercoat or mixing another solution, and heating to dry the glass surface coated with the photocatalyst solution to form the coating film, wherein
- the photocatalyst solution comprising the titania-silica is a sol of titania-silica in which titania and silica have been bonded via a peroxy bond, produced by further adding hydrogen peroxide to peroxidize amorphous titania to which tetraethyl orthosilicate has been added, and
- the coating film is formed with a heating temperature from 110° C. to 160° C., and the formed coating film has a film hardness of 6H or higher as measured according to the Pencil method.
Dependencies are inferred from the claim text.