Glass coating composition and method of application

摘要

A coating composition of an alkyl alkoxy silane reacted with the surface of a glass substrate is disclosed. The coating provides water repellency, durability and ease of cleaning to a glass or other siliceous surface. The coating is formed by applying an excess of an alkoxy solution containing sulfide acid to a glass surface. After a continuous film of the alkoxy solution has reacted with the glass substrate to cover completely a surface of the substrate, the excess solution is removed. Failure to remove the excess solution immediately upon the formation of the reacted film results in the formation of a greasy, deleterious film which is difficult to remove. Proper removal of the excess coating solution provides a transparent reacted film which protects the substrate. A method for determining the appropriate end point for removing excess solution is disclosed.