Corrosion resistant silver and copper surfaces
AssigneeMinnesota Mining and Manufacturing Company
InventorDavid S. Kinosky
Life of this patent
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Abstract
Techniques are described for rendering silver and copper surfaces of various articles resistant to corrosion. The surfaces are contacted with compounds selected from the group consisting of 2-mercaptobenzoxazole and 1-phenyl-1H-tetrazole-5-thiol. Abrasion-resistant coatings are preferably applied to the silver and copper surfaces. The corrosion inhibiting compound may be included in the abrasion-resistant coating.
Claims6
An article comprising a plastic film having a layer of silver supported thereon, wherein said silver layer has been contacted with a compound selected from the group consisting of 2-mercaptobenzoxazole and 1-phenyl-1H-tetrazole-5-thiol;
- wherein said compound is present on said silver layer in an amount of at least about 0.001 gram per square meter;
- and further comprising a film-forming coating on said silver layer.
An article having a metallic surface layer selected from the group consisting of silver and copper, said surface bearing a corrosion inhibiting layer comprising a compound selected from the group consisting of 2-mercaptobenzoxazole and 1-phenyl-1H-tetrazole-5-thiol;
- and further comprising a film-forming hardenable resin layer over said corrosion inhibiting layer.
An article having a metallic surface comprising silver or copper, wherein said surface has been contacted with a compound consisting essentially of 2-mercaptobenzoxazole;
- wherein said compound is present on said surface in an amount of at least about 0.001 gram per square meter;
- and further comprising a film-forming hardenable resin layer over said surface.
Dependencies are inferred from the claim text.