The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 1982
Filed:
May. 27, 1980
Frank K Chi, Midland, MI (US);
Dow Corning Corporation, Midland, MI (US);
Abstract
Non-ferrous metal substrates such as aluminum are coated with a composition consisting essentially of a dispersion of colloidal titania particles in a water/polar organic solvent medium of a partial condensate formed by hydrolyzing a silane such as methyltrimethoxysilane in the presence of the colloidal titania particles and in the presence of a sufficient amount of an acid such as acetic acid to provide a pH in the range of from 2 to 6. Optionally, the composition can contain up to 20 weight percent of colloidal silica and/or up to 5 weight percent of other types of monoorganosilsesquioxanes based upon the total weight of solids in the composition. The coated substrates are heated until the coating cures, preferably at 50.degree. C. to 150.degree. C., to form a transparent coating which renders the substrate more resistant to corrosion induced by acids or salts such as road salt or ocean spray.